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WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/.piopm Normal file
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{"type": "library", "name": "ESPAsyncWebServer", "version": "3.8.1", "spec": {"owner": "esp32async", "id": 18274, "name": "ESPAsyncWebServer", "requirements": null, "uri": null}}

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GNU LESSER GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
This version of the GNU Lesser General Public License incorporates
the terms and conditions of version 3 of the GNU General Public
License, supplemented by the additional permissions listed below.
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General Public License, and the "GNU GPL" refers to version 3 of the GNU
General Public License.
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![https://avatars.githubusercontent.com/u/195753706?s=96&v=4](https://avatars.githubusercontent.com/u/195753706?s=96&v=4)
# ESPAsyncWebServer
[![Latest Release](https://img.shields.io/github/release/ESP32Async/ESPAsyncWebServer.svg)](https://GitHub.com/ESP32Async/ESPAsyncWebServer/releases/)
[![PlatformIO Registry](https://badges.registry.platformio.org/packages/ESP32Async/library/ESPAsyncWebServer.svg)](https://registry.platformio.org/libraries/ESP32Async/ESPAsyncWebServer)
[![License: LGPL 3.0](https://img.shields.io/badge/License-LGPL%203.0-yellow.svg)](https://opensource.org/license/lgpl-3-0/)
[![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-2.1-4baaaa.svg)](code_of_conduct.md)
[![GitHub latest commit](https://badgen.net/github/last-commit/ESP32Async/ESPAsyncWebServer)](https://GitHub.com/ESP32Async/ESPAsyncWebServer/commit/)
[![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/ESP32Async/ESPAsyncWebServer)
[![ESP32Async Discord Server](https://img.shields.io/badge/Discord-ESP32Async-blue?logo=discord)](https://discord.gg/X7zpGdyUcY)
[![Documentation](https://img.shields.io/badge/Wiki-ESPAsyncWebServer-blue?logo=github)](https://github.com/ESP32Async/ESPAsyncWebServer/wiki)
## Asynchronous HTTP and WebSocket Server Library for ESP32, ESP8266, RP2040 and RP2350
Supports: WebSocket, SSE, Authentication, Arduino Json 7, File Upload, Static File serving, URL Rewrite, URL Redirect, etc.
- [Documentation](#documentation)
- [How to install](#how-to-install)
- [Dependencies](#dependencies)
- [ESP32 / pioarduino](#esp32--pioarduino)
- [ESP8266 / pioarduino](#esp8266--pioarduino)
- [Unofficial dependencies](#unofficial-dependencies)
## Documentation
The complete [project documentation](https://github.com/ESP32Async/ESPAsyncWebServer/wiki) is available in the Wiki section.
## How to install
The library can be downloaded from the releases page at [https://github.com/ESP32Async/ESPAsyncWebServer/releases](https://github.com/ESP32Async/ESPAsyncWebServer/releases).
It is also deployed in these registries:
- Arduino Library Registry: [https://github.com/arduino/library-registry](https://github.com/arduino/library-registry)
- ESP Component Registry [https://components.espressif.com/components/esp32async/espasyncwebserver](https://components.espressif.com/components/esp32async/espasyncwebserver)
- PlatformIO Registry: [https://registry.platformio.org/libraries/esp32async/ESPAsyncWebServer](https://registry.platformio.org/libraries/esp32async/ESPAsyncWebServer)
- Use: `lib_deps=ESP32Async/ESPAsyncWebServer` to point to latest version
- Use: `lib_deps=ESP32Async/ESPAsyncWebServer @ ^<x.y.z>` to point to latest version with the same major version
- Use: `lib_deps=ESP32Async/ESPAsyncWebServer @ <x.y.z>` to always point to the same version (reproductible build)
## Dependencies
### ESP32 / pioarduino
```ini
[env:stable]
platform = https://github.com/pioarduino/platform-espressif32/releases/download/stable/platform-espressif32.zip
lib_compat_mode = strict
lib_ldf_mode = chain
lib_deps =
ESP32Async/AsyncTCP
ESP32Async/ESPAsyncWebServer
```
### ESP8266 / pioarduino
```ini
[env:stable]
platform = espressif8266
lib_compat_mode = strict
lib_ldf_mode = chain
lib_deps =
ESP32Async/ESPAsyncTCP
ESP32Async/ESPAsyncWebServer
```
### LibreTiny (BK7231N/T, RTL8710B, etc.)
Version 1.9.1 or newer is required.
```ini
[env:stable]
platform = libretiny @ ^1.9.1
lib_ldf_mode = chain
lib_deps =
ESP32Async/AsyncTCP
ESP32Async/ESPAsyncWebServer
```
### Unofficial dependencies
**AsyncTCPSock**
AsyncTCPSock can be used instead of AsyncTCP by excluding AsyncTCP from the library dependencies and adding AsyncTCPSock instead:
```ini
lib_compat_mode = strict
lib_ldf_mode = chain
lib_deps =
https://github.com/ESP32Async/AsyncTCPSock/archive/refs/tags/v1.0.3-dev.zip
ESP32Async/ESPAsyncWebServer
lib_ignore =
AsyncTCP
ESP32Async/AsyncTCP
```
**RPAsyncTCP**
RPAsyncTCP replaces AsyncTCP to provide support for RP2040(+WiFi) and RP2350(+WiFi) boards. For example - Raspberry Pi Pico W and Raspberry Pi Pico 2W.
```ini
lib_compat_mode = strict
lib_ldf_mode = chain
platform = https://github.com/maxgerhardt/platform-raspberrypi.git
board = rpipicow
board_build.core = earlephilhower
lib_deps =
ayushsharma82/RPAsyncTCP@^1.3.2
ESP32Async/ESPAsyncWebServer
lib_ignore =
lwIP_ESPHost
build_flags = ${env.build_flags}
-Wno-missing-field-initializers
```
## Important recommendations for build options
Most of the crashes are caused by improper use or configuration of the AsyncTCP library used for the project.
Here are some recommendations to avoid them and build-time flags you can change.
`CONFIG_ASYNC_TCP_MAX_ACK_TIME` - defines a timeout for TCP connection to be considered alive when waiting for data.
In some bad network conditions you might consider increasing it.
`CONFIG_ASYNC_TCP_QUEUE_SIZE` - defines the length of the queue for events related to connections handling.
Both the server and AsyncTCP library were optimized to control the queue automatically. Do NOT try blindly increasing the queue size, it does not help you in a way you might think it is. If you receive debug messages about queue throttling, try to optimize your server callbacks code to execute as fast as possible.
Read #165 thread, it might give you some hints.
`CONFIG_ASYNC_TCP_RUNNING_CORE` - CPU core thread affinity that runs the queue events handling and executes server callbacks. Default is ANY core, so it means that for dualcore SoCs both cores could handle server activities. If your server's code is too heavy and unoptimized or you see that sometimes
server might affect other network activities, you might consider to bind it to the same core that runs Arduino code (1) to minimize affect on radio part. Otherwise you can leave the default to let RTOS decide where to run the thread based on priority
`CONFIG_ASYNC_TCP_STACK_SIZE` - stack size for the thread that runs sever events and callbacks. Default is 16k that is a way too much waste for well-defined short async code or simple static file handling. You might want to cosider reducing it to 4-8k to same RAM usage. If you do not know what this is or not sure about your callback code demands - leave it as default, should be enough even for very hungry callbacks in most cases.
> [!NOTE]
> This relates to ESP32 only, ESP8266 uses different ESPAsyncTCP lib that does not has this build options
I personally use the following configuration in my projects:
```c++
-D CONFIG_ASYNC_TCP_MAX_ACK_TIME=5000 // (keep default)
-D CONFIG_ASYNC_TCP_PRIORITY=10 // (keep default)
-D CONFIG_ASYNC_TCP_QUEUE_SIZE=64 // (keep default)
-D CONFIG_ASYNC_TCP_RUNNING_CORE=1 // force async_tcp task to be on same core as Arduino app (default is any core)
-D CONFIG_ASYNC_TCP_STACK_SIZE=4096 // reduce the stack size (default is 16K)
```
If you need to serve chunk requests with a really low buffer (which should be avoided), you can set `-D ASYNCWEBSERVER_USE_CHUNK_INFLIGHT=0` to disable the in-flight control.

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#include <DNSServer.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// Shows how to use AsyncResponseStream.
// The internal buffer will be allocated and data appended to it,
// until the response is sent, then this buffer is read and committed on the network.
//
// curl -v http://192.168.4.1/
//
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
AsyncResponseStream *response = request->beginResponseStream("plain/text", 40 * 1024);
for (int i = 0; i < 32 * 1024; i++) {
response->write('a');
}
request->send(response);
});
server.begin();
}
void loop() {
delay(100);
}

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Shows how to trigger an async client request from a browser request and send the client response back to the browser through websocket
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
#define WIFI_SSID "IoT"
#define WIFI_PASSWORD ""
static AsyncWebServer server(80);
static AsyncWebSocketMessageHandler wsHandler;
static AsyncWebSocket ws("/ws", wsHandler.eventHandler());
static const char *htmlContent PROGMEM = R"(
<!DOCTYPE html>
<html>
<head>
<title>WebSocket Tunnel Example</title>
</head>
<body>
<h1>WebSocket Tunnel Example</h1>
<div><input type="text" id="url" value="http://www.google.com" /></div>
<div><button onclick='fetch()'>Fetch</button></div>
<div><pre id="response"></pre></div>
<script>
var ws = new WebSocket('/ws');
ws.binaryType = "arraybuffer";
ws.onopen = function() {
console.log("WebSocket connected");
};
ws.onmessage = function(event) {
let uint8array = new Uint8Array(event.data);
let string = new TextDecoder().decode(uint8array);
console.log("WebSocket message: " + string);
document.getElementById("response").innerText += string;
};
ws.onclose = function() {
console.log("WebSocket closed");
};
ws.onerror = function(error) {
console.log("WebSocket error: " + error);
};
function fetch() {
document.getElementById("response").innerText = "";
var url = document.getElementById("url").value;
ws.send(url);
console.log("WebSocket sent: " + url);
}
</script>
</body>
</html>
)";
static const size_t htmlContentLength = strlen_P(htmlContent);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
}
Serial.println("Connected to WiFi!");
Serial.println(WiFi.localIP());
#endif
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
request->send(200, "text/html", (const uint8_t *)htmlContent, htmlContentLength);
});
wsHandler.onMessage([](AsyncWebSocket *server, AsyncWebSocketClient *wsClient, const uint8_t *data, size_t len) {
String url;
String host;
String port;
String path;
url.concat((const char *)data, len);
if (!url.startsWith("http://")) {
return;
}
if (!url.endsWith("/")) {
url += "/";
}
// Parse the URL to extract the host and port
int start = url.indexOf("://") + 3;
int end = url.indexOf("/", start);
if (end == -1) {
end = url.length();
}
String hostPort = url.substring(start, end);
int colonIndex = hostPort.indexOf(":");
if (colonIndex != -1) {
host = hostPort.substring(0, colonIndex);
port = hostPort.substring(colonIndex + 1);
} else {
host = hostPort;
port = "80"; // Default HTTP port
}
path = url.substring(end);
Serial.printf("Host: %s\n", host.c_str());
Serial.printf("Port: %s\n", port.c_str());
Serial.printf("Path: %s\n", path.c_str());
// Ensure client does not get deleted while the websocket holds a reference to it
std::shared_ptr<AsyncClient> *safeAsyncClient = new std::shared_ptr<AsyncClient>(std::make_shared<AsyncClient>());
AsyncClient *asyncClient = safeAsyncClient->get();
asyncClient->onDisconnect([safeAsyncClient](void *arg, AsyncClient *client) {
Serial.printf("Tunnel disconnected!\n");
delete safeAsyncClient;
});
// register a callback when an error occurs
// note: onDisconnect also called on error
asyncClient->onError([](void *arg, AsyncClient *client, int8_t error) {
Serial.printf("Tunnel error: %s\n", client->errorToString(error));
});
// register a callback when data arrives, to accumulate it
asyncClient->onPacket(
[safeAsyncClient](void *arg, AsyncClient *, struct pbuf *pb) {
std::shared_ptr<AsyncClient> safeAsyncClientRef = *safeAsyncClient; // add a reference
AsyncWebSocketClient *wsClient = (AsyncWebSocketClient *)arg;
Serial.printf("Tunnel received %u bytes\n", pb->len);
AsyncWebSocketSharedBuffer wsBuffer =
AsyncWebSocketSharedBuffer(new std::vector<uint8_t>((uint8_t *)pb->payload, (uint8_t *)pb->payload + pb->len), [=](std::vector<uint8_t> *bufptr) {
delete bufptr;
Serial.printf("ACK %u bytes\n", pb->len);
safeAsyncClientRef->ackPacket(pb);
});
Serial.printf("Tunnel sending %u bytes\n", wsBuffer->size());
Serial.printf("%.*s\n", (int)wsBuffer->size(), wsBuffer->data());
wsClient->binary(std::move(wsBuffer));
},
wsClient
);
asyncClient->onConnect([=](void *arg, AsyncClient *client) {
Serial.printf("Tunnel connected!\n");
client->write("GET ");
client->write(path.c_str());
client->write(" HTTP/1.1\r\n");
client->write("Host: ");
client->write(host.c_str());
client->write(":");
client->write(port.c_str());
client->write("\r\n");
client->write("User-Agent: ESP32\r\n");
client->write("Accept: */*\r\n");
client->write("Connection: close\r\n");
client->write("\r\n");
});
Serial.printf("Fetching: http://%s:%s%s\n", host.c_str(), port.c_str(), path.c_str());
if (!asyncClient->connect(host.c_str(), port.toInt())) {
Serial.printf("Failed to open tunnel!\n");
delete safeAsyncClient;
}
});
wsHandler.onConnect([](AsyncWebSocket *server, AsyncWebSocketClient *client) {
Serial.printf("Client %" PRIu32 " connected\n", client->id());
client->binary("WebSocket connected!");
});
wsHandler.onDisconnect([](AsyncWebSocket *server, uint32_t clientId) {
Serial.printf("Client %" PRIu32 " disconnected\n", clientId);
});
server.addHandler(&ws);
server.begin();
Serial.println("Server started!");
}
static uint32_t lastHeap = 0;
void loop() {
ws.cleanupClients(2);
#ifdef ESP32
uint32_t now = millis();
if (now - lastHeap >= 2000) {
Serial.printf("Uptime: %3lu s, Free heap: %" PRIu32 "\n", millis() / 1000, ESP.getFreeHeap());
lastHeap = now;
}
#endif
delay(500);
}

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Authentication and authorization middlewares
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
// basicAuth
static AsyncAuthenticationMiddleware basicAuth;
static AsyncAuthenticationMiddleware basicAuthHash;
// simple digest authentication
static AsyncAuthenticationMiddleware digestAuth;
static AsyncAuthenticationMiddleware digestAuthHash;
// complex authentication which adds request attributes for the next middlewares and handler
static AsyncMiddlewareFunction complexAuth([](AsyncWebServerRequest *request, ArMiddlewareNext next) {
if (!request->authenticate("user", "password")) {
return request->requestAuthentication();
}
// add attributes to the request for the next middlewares and handler
request->setAttribute("user", "Mathieu");
request->setAttribute("role", "staff");
if (request->hasParam("token")) {
request->setAttribute("token", request->getParam("token")->value().c_str());
}
next();
});
static AsyncAuthorizationMiddleware authz([](AsyncWebServerRequest *request) {
return request->getAttribute("token") == "123";
});
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// basic authentication
basicAuth.setUsername("admin");
basicAuth.setPassword("admin");
basicAuth.setRealm("MyApp");
basicAuth.setAuthFailureMessage("Authentication failed");
basicAuth.setAuthType(AsyncAuthType::AUTH_BASIC);
basicAuth.generateHash(); // precompute hash (optional but recommended)
// basic authentication with hash
basicAuthHash.setUsername("admin");
basicAuthHash.setPasswordHash("YWRtaW46YWRtaW4="); // BASE64(admin:admin)
basicAuthHash.setRealm("MyApp");
basicAuthHash.setAuthFailureMessage("Authentication failed");
basicAuthHash.setAuthType(AsyncAuthType::AUTH_BASIC);
// digest authentication
digestAuth.setUsername("admin");
digestAuth.setPassword("admin");
digestAuth.setRealm("MyApp");
digestAuth.setAuthFailureMessage("Authentication failed");
digestAuth.setAuthType(AsyncAuthType::AUTH_DIGEST);
digestAuth.generateHash(); // precompute hash (optional but recommended)
// digest authentication with hash
digestAuthHash.setUsername("admin");
digestAuthHash.setPasswordHash("f499b71f9a36d838b79268e145e132f7"); // MD5(user:realm:pass)
digestAuthHash.setRealm("MyApp");
digestAuthHash.setAuthFailureMessage("Authentication failed");
digestAuthHash.setAuthType(AsyncAuthType::AUTH_DIGEST);
// basic authentication method
// curl -v -u admin:admin http://192.168.4.1/auth-basic
server
.on(
"/auth-basic", HTTP_GET,
[](AsyncWebServerRequest *request) {
request->send(200, "text/plain", "Hello, world!");
}
)
.addMiddleware(&basicAuth);
// basic authentication method with hash
// curl -v -u admin:admin http://192.168.4.1/auth-basic-hash
server
.on(
"/auth-basic-hash", HTTP_GET,
[](AsyncWebServerRequest *request) {
request->send(200, "text/plain", "Hello, world!");
}
)
.addMiddleware(&basicAuthHash);
// digest authentication
// curl -v -u admin:admin --digest http://192.168.4.1/auth-digest
server
.on(
"/auth-digest", HTTP_GET,
[](AsyncWebServerRequest *request) {
request->send(200, "text/plain", "Hello, world!");
}
)
.addMiddleware(&digestAuth);
// digest authentication with hash
// curl -v -u admin:admin --digest http://192.168.4.1/auth-digest-hash
server
.on(
"/auth-digest-hash", HTTP_GET,
[](AsyncWebServerRequest *request) {
request->send(200, "text/plain", "Hello, world!");
}
)
.addMiddleware(&digestAuthHash);
// test digest auth custom authorization middleware
// curl -v --digest -u user:password http://192.168.4.1/auth-custom?token=123 => OK
// curl -v --digest -u user:password http://192.168.4.1/auth-custom?token=456 => 403
// curl -v --digest -u user:FAILED http://192.168.4.1/auth-custom?token=456 => 401
server
.on(
"/auth-custom", HTTP_GET,
[](AsyncWebServerRequest *request) {
String buffer = "Hello ";
buffer.concat(request->getAttribute("user"));
buffer.concat(" with role: ");
buffer.concat(request->getAttribute("role"));
request->send(200, "text/plain", buffer);
}
)
.addMiddlewares({&complexAuth, &authz});
server.begin();
}
// not needed
void loop() {
delay(100);
}

60
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/CORS/CORS.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// How to use CORS middleware
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
static AsyncCorsMiddleware cors;
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
cors.setOrigin("http://192.168.4.1");
cors.setMethods("POST, GET, OPTIONS, DELETE");
cors.setHeaders("X-Custom-Header");
cors.setAllowCredentials(false);
cors.setMaxAge(600);
server.addMiddleware(&cors);
// Test CORS preflight request
// curl -v -X OPTIONS -H "origin: http://192.168.4.1" http://192.168.4.1/cors
//
// Test CORS request
// curl -v -H "origin: http://192.168.4.1" http://192.168.4.1/cors
//
// Test non-CORS request
// curl -v http://192.168.4.1/cors
//
server.on("/cors", HTTP_GET, [](AsyncWebServerRequest *request) {
request->send(200, "text/plain", "Hello, world!");
});
server.begin();
}
// not needed
void loop() {
delay(100);
}

60
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/CaptivePortal/CaptivePortal.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#include <DNSServer.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include "ESPAsyncWebServer.h"
static DNSServer dnsServer;
static AsyncWebServer server(80);
class CaptiveRequestHandler : public AsyncWebHandler {
public:
bool canHandle(__unused AsyncWebServerRequest *request) const override {
return true;
}
void handleRequest(AsyncWebServerRequest *request) {
AsyncResponseStream *response = request->beginResponseStream("text/html");
response->print("<!DOCTYPE html><html><head><title>Captive Portal</title></head><body>");
response->print("<p>This is our captive portal front page.</p>");
response->printf("<p>You were trying to reach: http://%s%s</p>", request->host().c_str(), request->url().c_str());
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
response->printf("<p>Try opening <a href='http://%s'>this link</a> instead</p>", WiFi.softAPIP().toString().c_str());
#endif
response->print("</body></html>");
request->send(response);
}
};
void setup() {
Serial.begin(115200);
Serial.println();
Serial.println("Configuring access point...");
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
if (!WiFi.softAP("esp-captive")) {
Serial.println("Soft AP creation failed.");
while (1);
}
dnsServer.start(53, "*", WiFi.softAPIP());
#endif
server.addHandler(new CaptiveRequestHandler()).setFilter(ON_AP_FILTER); // only when requested from AP
// more handlers...
server.begin();
}
void loop() {
dnsServer.processNextRequest();
}

133
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/CatchAllHandler/CatchAllHandler.ino Normal file
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@@ -0,0 +1,133 @@
// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Shows how to catch all requests and send a 404 Not Found response
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
static const char *htmlContent PROGMEM = R"(
<!DOCTYPE html>
<html>
<head>
<title>Sample HTML</title>
</head>
<body>
<h1>Hello, World!</h1>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
</body>
</html>
)";
static const size_t htmlContentLength = strlen_P(htmlContent);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// curl -v http://192.168.4.1/
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
// need to cast to uint8_t*
// if you do not, the const char* will be copied in a temporary String buffer
request->send(200, "text/html", (uint8_t *)htmlContent, htmlContentLength);
});
// catch any request, and send a 404 Not Found response
// except for /game_log which is handled by onRequestBody
//
// curl -v http://192.168.4.1/foo
//
server.onNotFound([](AsyncWebServerRequest *request) {
if (request->url() == "/game_log") {
return; // response object already created by onRequestBody
}
request->send(404, "text/plain", "Not found");
});
// See: https://github.com/ESP32Async/ESPAsyncWebServer/issues/6
// catch any POST request and send a 200 OK response
//
// curl -v -X POST http://192.168.4.1/game_log -H "Content-Type: application/json" -d '{"game": "test"}'
//
server.onRequestBody([](AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total) {
if (request->url() == "/game_log") {
request->send(200, "application/json", "{\"status\":\"OK\"}");
}
// note that there is no else here: the goal is only to prepare a response based on some body content
// onNotFound will always be called after this, and will not override the response object if `/game_log` is requested
});
server.begin();
}
// not needed
void loop() {
delay(100);
}

140
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/ChunkResponse/ChunkResponse.ino Normal file
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@@ -0,0 +1,140 @@
// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Chunk response with caching example
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
static const char *htmlContent PROGMEM = R"(
<!DOCTYPE html>
<html>
<head>
<title>Sample HTML</title>
</head>
<body>
<h1>Hello, World!</h1>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
</body>
</html>
)";
static const size_t htmlContentLength = strlen_P(htmlContent);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// first time: serves the file and cache headers
// curl -N -v http://192.168.4.1/ --output -
//
// secodn time: serves 304
// curl -N -v -H "if-none-match: 4272" http://192.168.4.1/ --output -
//
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
String etag = String(htmlContentLength);
if (request->header(asyncsrv::T_INM) == etag) {
request->send(304);
return;
}
AsyncWebServerResponse *response = request->beginChunkedResponse("text/html", [](uint8_t *buffer, size_t maxLen, size_t index) -> size_t {
Serial.printf("%u / %u\n", index, htmlContentLength);
// finished ?
if (htmlContentLength <= index) {
Serial.println("finished");
return 0;
}
// serve a maximum of 256 or maxLen bytes of the remaining content
// this small number is specifically chosen to demonstrate the chunking
// DO NOT USE SUCH SMALL NUMBER IN PRODUCTION
// Reducing the chunk size will increase the response time, thus reducing the server's capacity in processing concurrent requests
const int chunkSize = min((size_t)256, min(maxLen, htmlContentLength - index));
Serial.printf("sending: %u\n", chunkSize);
memcpy(buffer, htmlContent + index, chunkSize);
return chunkSize;
});
response->addHeader(asyncsrv::T_Cache_Control, "public,max-age=60");
response->addHeader(asyncsrv::T_ETag, etag);
request->send(response);
});
server.begin();
}
void loop() {
delay(100);
}

229
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/ChunkRetryResponse/ChunkRetryResponse.ino Normal file
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@@ -0,0 +1,229 @@
// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Shows how to wait in a chunk response for incoming data
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
#if __has_include("ArduinoJson.h")
#include <ArduinoJson.h>
#include <AsyncJson.h>
#include <AsyncMessagePack.h>
#endif
static const char *htmlContent PROGMEM = R"(
<!DOCTYPE html>
<html>
<head>
<title>Sample HTML</title>
</head>
<body>
<h1>Hello, World!</h1>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
</body>
</html>
)";
static const size_t htmlContentLength = strlen_P(htmlContent);
static AsyncWebServer server(80);
static AsyncLoggingMiddleware requestLogger;
static String triggerUART;
static int key = -1;
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// adds some internal request logging for debugging
requestLogger.setEnabled(true);
requestLogger.setOutput(Serial);
server.addMiddleware(&requestLogger);
#if __has_include("ArduinoJson.h")
//
// HOW TO RUN THIS EXAMPLE:
//
// 1. Trigger a request that will be blocked for a long time:
// > time curl -v -X POST http://192.168.4.1/api -H "Content-Type: application/json" -d '{"input": "Please type a key to continue in Serial console..."}' --output -
//
// 2. While waiting, in another terminal, run some concurrent requests:
// > time curl -v http://192.168.4.1/
//
// 3. Type a key in the Serial console to continue the processing within 30 seconds.
// This should unblock the first request.
//
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
// need to cast to uint8_t*
// if you do not, the const char* will be copied in a temporary String buffer
request->send(200, "text/html", (uint8_t *)htmlContent, htmlContentLength);
});
server.on(
"/api", HTTP_POST,
[](AsyncWebServerRequest *request) {
// request parsing has finished
String *data = (String *)request->_tempObject;
if (!data) {
request->send(400);
return;
}
// no data ?
if (!data->length()) {
delete data;
request->_tempObject = nullptr;
request->send(400);
return;
}
JsonDocument doc;
// deserialize and check for errors
if (deserializeJson(doc, *data)) {
delete data;
request->_tempObject = nullptr;
request->send(400);
return;
}
delete data;
request->_tempObject = nullptr;
// start UART com: UART will send the data to the Serial console and wait for the key press
triggerUART = doc["input"].as<const char *>();
key = -1;
AsyncWebServerResponse *response = request->beginChunkedResponse("text/plain", [](uint8_t *buffer, size_t maxLen, size_t index) -> size_t {
// still waiting for UARY ?
if (triggerUART.length() && key == -1) {
return RESPONSE_TRY_AGAIN;
}
// finished ?
if (!triggerUART.length() && key == -1) {
return 0; // 0 means we are done
}
// async_ws_log_d("UART answered!");
String answer = "You typed: ";
answer.concat((char)key);
// note: I did not check for maxLen, but you should (see ChunkResponse.ino)
memcpy(buffer, answer.c_str(), answer.length());
// finish!
triggerUART = emptyString;
key = -1;
return answer.length();
});
request->send(response);
},
NULL, // upload handler is not used so it should be NULL
[](AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total) {
// async_ws_log_d("Body: index: %u, len: %u, total: %u", index, len, total);
if (!index) {
// async_ws_log_d("Start body parsing");
request->_tempObject = new String();
// cast request->_tempObject pointer to String and reserve total size
((String *)request->_tempObject)->reserve(total);
// set timeout 30s
request->client()->setRxTimeout(30);
}
// async_ws_log_d("Append body data");
((String *)request->_tempObject)->concat((const char *)data, len);
}
);
#endif
server.begin();
}
void loop() {
if (triggerUART.length() && key == -1) {
Serial.println(triggerUART);
// async_ws_log_d("Waiting for UART input...");
while (!Serial.available()) {
delay(100);
}
key = Serial.read();
Serial.flush();
// async_ws_log_d("UART input: %c", key);
triggerUART = emptyString;
}
}

49
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/EndBegin/EndBegin.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// https://github.com/ESP32Async/ESPAsyncWebServer/discussions/23
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
request->send(200, "text/plain", "Hello, world");
});
server.begin();
Serial.println("begin() - run: curl -v http://192.168.4.1/ => should succeed");
delay(10000);
Serial.println("end()");
server.end();
server.begin();
Serial.println("begin() - run: curl -v http://192.168.4.1/ => should succeed");
}
// not needed
void loop() {
delay(100);
}

136
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/Filters/Filters.ino Normal file
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@@ -0,0 +1,136 @@
// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Shows how to use setFilter to route requests to different handlers based on WiFi mode
//
#include <DNSServer.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include "ESPAsyncWebServer.h"
static DNSServer dnsServer;
static AsyncWebServer server(80);
class CaptiveRequestHandler : public AsyncWebHandler {
public:
bool canHandle(__unused AsyncWebServerRequest *request) const override {
return true;
}
void handleRequest(AsyncWebServerRequest *request) override {
AsyncResponseStream *response = request->beginResponseStream("text/html");
response->print("<!DOCTYPE html><html><head><title>Captive Portal</title></head><body>");
response->print("<p>This is out captive portal front page.</p>");
response->printf("<p>You were trying to reach: http://%s%s</p>", request->host().c_str(), request->url().c_str());
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
response->printf("<p>Try opening <a href='http://%s'>this link</a> instead</p>", WiFi.softAPIP().toString().c_str());
#endif
response->print("</body></html>");
request->send(response);
}
};
bool hit1 = false;
bool hit2 = false;
void setup() {
Serial.begin(115200);
server
.on(
"/", HTTP_GET,
[](AsyncWebServerRequest *request) {
Serial.println("Captive portal request...");
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
Serial.println("WiFi.localIP(): " + WiFi.localIP().toString());
#endif
Serial.println("request->client()->localIP(): " + request->client()->localIP().toString());
#if ESP_IDF_VERSION_MAJOR >= 5
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
Serial.println("WiFi.type(): " + String((int)WiFi.localIP().type()));
#endif
Serial.println("request->client()->type(): " + String((int)request->client()->localIP().type()));
#endif
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
Serial.println(WiFi.localIP() == request->client()->localIP() ? "should be: ON_STA_FILTER" : "should be: ON_AP_FILTER");
Serial.println(WiFi.localIP() == request->client()->localIP());
Serial.println(WiFi.localIP().toString() == request->client()->localIP().toString());
#endif
request->send(200, "text/plain", "This is the captive portal");
hit1 = true;
}
)
.setFilter(ON_AP_FILTER);
server
.on(
"/", HTTP_GET,
[](AsyncWebServerRequest *request) {
Serial.println("Website request...");
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
Serial.println("WiFi.localIP(): " + WiFi.localIP().toString());
#endif
Serial.println("request->client()->localIP(): " + request->client()->localIP().toString());
#if ESP_IDF_VERSION_MAJOR >= 5
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
Serial.println("WiFi.type(): " + String((int)WiFi.localIP().type()));
#endif
Serial.println("request->client()->type(): " + String((int)request->client()->localIP().type()));
#endif
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
Serial.println(WiFi.localIP() == request->client()->localIP() ? "should be: ON_STA_FILTER" : "should be: ON_AP_FILTER");
Serial.println(WiFi.localIP() == request->client()->localIP());
Serial.println(WiFi.localIP().toString() == request->client()->localIP().toString());
#endif
request->send(200, "text/plain", "This is the website");
hit2 = true;
}
)
.setFilter(ON_STA_FILTER);
// assert(WiFi.softAP("esp-captive-portal"));
// dnsServer.start(53, "*", WiFi.softAPIP());
// server.begin();
// Serial.println("Captive portal started!");
// while (!hit1) {
// dnsServer.processNextRequest();
// yield();
// }
// delay(1000); // Wait for the client to process the response
// Serial.println("Captive portal opened, stopping it and connecting to WiFi...");
// dnsServer.stop();
// WiFi.softAPdisconnect();
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.persistent(false);
WiFi.begin("IoT");
while (WiFi.status() != WL_CONNECTED) {
delay(500);
}
Serial.println("Connected to WiFi with IP address: " + WiFi.localIP().toString());
#endif
server.begin();
// while (!hit2) {
// delay(10);
// }
// delay(1000); // Wait for the client to process the response
// ESP.restart();
}
void loop() {
delay(100);
}

107
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/FlashResponse/FlashResponse.ino Normal file
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@@ -0,0 +1,107 @@
// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Shows how to serve a large HTML page from flash memory without copying it to heap in a temporary buffer
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
static const char *htmlContent PROGMEM = R"(
<!DOCTYPE html>
<html>
<head>
<title>Sample HTML</title>
</head>
<body>
<h1>Hello, World!</h1>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
</body>
</html>
)";
static const size_t htmlContentLength = strlen_P(htmlContent);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// curl -v http://192.168.4.1/
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
// need to cast to uint8_t*
// if you do not, the const char* will be copied in a temporary String buffer
request->send(200, "text/html", (uint8_t *)htmlContent, htmlContentLength);
});
server.begin();
}
// not needed
void loop() {
delay(100);
}

111
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/HeaderManipulation/HeaderManipulation.ino Normal file
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@@ -0,0 +1,111 @@
// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Show how to manipulate headers in the request / response
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
// request logger
static AsyncLoggingMiddleware requestLogger;
// filter out specific headers from the incoming request
static AsyncHeaderFilterMiddleware headerFilter;
// remove all headers from the incoming request except the ones provided in the constructor
AsyncHeaderFreeMiddleware headerFree;
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
requestLogger.setEnabled(true);
requestLogger.setOutput(Serial);
headerFilter.filter("X-Remove-Me");
headerFree.keep("X-Keep-Me");
headerFree.keep("host");
server.addMiddlewares({&requestLogger, &headerFilter});
// x-remove-me header will be removed
//
// curl -v -H "X-Header: Foo" -H "x-remove-me: value" http://192.168.4.1/remove
//
server.on("/remove", HTTP_GET, [](AsyncWebServerRequest *request) {
// print all headers
for (size_t i = 0; i < request->headers(); i++) {
const AsyncWebHeader *h = request->getHeader(i);
Serial.printf("Header[%s]: %s\n", h->name().c_str(), h->value().c_str());
}
request->send(200, "text/plain", "Hello, world!");
});
// Only headers x-keep-me and host will be kept
//
// curl -v -H "x-keep-me: value" -H "x-remove-me: value" http://192.168.4.1/keep
//
server
.on(
"/keep", HTTP_GET,
[](AsyncWebServerRequest *request) {
// print all headers
for (size_t i = 0; i < request->headers(); i++) {
const AsyncWebHeader *h = request->getHeader(i);
Serial.printf("Header[%s]: %s\n", h->name().c_str(), h->value().c_str());
}
request->send(200, "text/plain", "Hello, world!");
}
)
.addMiddleware(&headerFree);
// curl -v http://192.168.4.1/
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
AsyncWebServerResponse *response = request->beginResponse(200, "text/plain", "Hello, world!");
response->addHeader(AsyncWebHeader::parse("X-Test-1: value1"));
response->addHeader(AsyncWebHeader::parse("X-Test-2:value2"));
response->addHeader(AsyncWebHeader::parse("X-Test-3:"));
response->addHeader(AsyncWebHeader::parse("X-Test-4: "));
response->addHeader(AsyncWebHeader::parse(""));
response->addHeader(AsyncWebHeader::parse(":"));
request->send(response);
/**
< HTTP/1.1 200 OK
< connection: close
< X-Test-1: value1
< X-Test-2: value2
< X-Test-3:
< X-Test-4:
< accept-ranges: none
< content-length: 13
< content-type: text/plain
*/
});
server.begin();
}
// not needed
void loop() {
delay(100);
}

69
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/Headers/Headers.ino Normal file
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@@ -0,0 +1,69 @@
// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Query and send headers
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
//
// curl -v http://192.168.4.1
//
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
//List all collected headers
int headers = request->headers();
int i;
for (i = 0; i < headers; i++) {
const AsyncWebHeader *h = request->getHeader(i);
Serial.printf("HEADER[%s]: %s\n", h->name().c_str(), h->value().c_str());
}
AsyncWebServerResponse *response = request->beginResponse(200, "text/plain", "Hello World!");
//Add header to the response
response->addHeader("Server", "ESP Async Web Server");
//Add multiple headers with the same name
response->addHeader("Set-Cookie", "sessionId=38afes7a8", false);
response->addHeader("Set-Cookie", "id=a3fWa; Max-Age=2592000", false);
response->addHeader("Set-Cookie", "qwerty=219ffwef9w0f; Domain=example.com", false);
//Remove specific header
response->removeHeader("Set-Cookie", "sessionId=38afes7a8");
//Remove all headers with the same name
response->removeHeader("Set-Cookie");
request->send(response);
});
server.begin();
}
void loop() {
//Sleep in the loop task to not keep the CPU busy
delay(1000);
}

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Shows how to send and receive Json data
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
#if __has_include("ArduinoJson.h")
#include <ArduinoJson.h>
#include <AsyncJson.h>
#include <AsyncMessagePack.h>
#endif
static AsyncWebServer server(80);
#if __has_include("ArduinoJson.h")
static AsyncCallbackJsonWebHandler *handler = new AsyncCallbackJsonWebHandler("/json2");
#endif
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
#if __has_include("ArduinoJson.h")
//
// sends JSON using AsyncJsonResponse
//
// curl -v http://192.168.4.1/json1
//
server.on("/json1", HTTP_GET, [](AsyncWebServerRequest *request) {
AsyncJsonResponse *response = new AsyncJsonResponse();
JsonObject root = response->getRoot().to<JsonObject>();
root["hello"] = "world";
response->setLength();
request->send(response);
});
// Send JSON using AsyncResponseStream
//
// curl -v http://192.168.4.1/json2
//
server.on("/json2", HTTP_GET, [](AsyncWebServerRequest *request) {
AsyncResponseStream *response = request->beginResponseStream("application/json");
JsonDocument doc;
JsonObject root = doc.to<JsonObject>();
root["foo"] = "bar";
serializeJson(root, *response);
Serial.println();
request->send(response);
});
// curl -v -X POST -H 'Content-Type: application/json' -d '{"name":"You"}' http://192.168.4.1/json2
// curl -v -X PUT -H 'Content-Type: application/json' -d '{"name":"You"}' http://192.168.4.1/json2
//
// edge cases:
//
// curl -v -X POST -H "Content-Type: application/json" -d "1234" -H "Content-Length: 5" http://192.168.4.1/json2 => rx timeout
// curl -v -X POST -H "Content-Type: application/json" -d "1234" -H "Content-Length: 2" http://192.168.4.1/json2 => 12
// curl -v -X POST -H "Content-Type: application/json" -d "1234" -H "Content-Length: 4" http://192.168.4.1/json2 => 1234
// curl -v -X POST -H "Content-Type: application/json" -d "1234" -H "Content-Length: 10" http://192.168.4.1/json2 => rx timeout
// curl -v -X POST -H "Content-Type: application/json" -d "12345678" -H "Content-Length: 8" http://192.168.4.1/json2 => 12345678
// curl -v -X POST -H "Content-Type: application/json" -d "123456789" -H "Content-Length: 8" http://192.168.4.1/json2 => 12345678
// curl -v -X POST -H "Content-Type: application/json" -d "123456789" -H "Content-Length: 9" http://192.168.4.1/json2 => 413: Content length exceeds maximum allowed
handler->setMaxContentLength(8);
handler->setMethod(HTTP_POST | HTTP_PUT);
handler->onRequest([](AsyncWebServerRequest *request, JsonVariant &json) {
serializeJson(json, Serial);
Serial.println();
AsyncJsonResponse *response = new AsyncJsonResponse();
JsonObject root = response->getRoot().to<JsonObject>();
root["hello"] = json.as<JsonObject>()["name"];
response->setLength();
request->send(response);
});
server.addHandler(handler);
#endif
server.begin();
}
// not needed
void loop() {
delay(100);
}

49
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Show how to log the incoming request and response as a curl-like syntax
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
static AsyncLoggingMiddleware requestLogger;
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
requestLogger.setEnabled(true);
requestLogger.setOutput(Serial);
server.addMiddleware(&requestLogger);
// curl -v -H "X-Header:Foo" http://192.168.4.1/
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
request->send(200, "text/plain", "Hello, world!");
});
server.begin();
}
// not needed
void loop() {
delay(100);
}

88
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Shows how to send and receive Message Pack data
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
#if __has_include("ArduinoJson.h")
#include <ArduinoJson.h>
#include <AsyncJson.h>
#include <AsyncMessagePack.h>
#endif
static AsyncWebServer server(80);
#if __has_include("ArduinoJson.h")
static AsyncCallbackMessagePackWebHandler *handler = new AsyncCallbackMessagePackWebHandler("/msgpack2");
#endif
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
#if __has_include("ArduinoJson.h")
//
// sends MessagePack using AsyncMessagePackResponse
//
// curl -v http://192.168.4.1/msgpack1
//
server.on("/msgpack1", HTTP_GET, [](AsyncWebServerRequest *request) {
AsyncMessagePackResponse *response = new AsyncMessagePackResponse();
JsonObject root = response->getRoot().to<JsonObject>();
root["hello"] = "world";
response->setLength();
request->send(response);
});
// Send MessagePack using AsyncResponseStream
//
// curl -v http://192.168.4.1/msgpack2
//
server.on("/msgpack2", HTTP_GET, [](AsyncWebServerRequest *request) {
AsyncResponseStream *response = request->beginResponseStream("application/msgpack");
JsonDocument doc;
JsonObject root = doc.to<JsonObject>();
root["foo"] = "bar";
serializeMsgPack(root, *response);
request->send(response);
});
handler->setMethod(HTTP_POST | HTTP_PUT);
handler->onRequest([](AsyncWebServerRequest *request, JsonVariant &json) {
serializeJson(json, Serial);
AsyncMessagePackResponse *response = new AsyncMessagePackResponse();
JsonObject root = response->getRoot().to<JsonObject>();
root["hello"] = json.as<JsonObject>()["name"];
response->setLength();
request->send(response);
});
server.addHandler(handler);
#endif
server.begin();
}
// not needed
void loop() {
delay(100);
}

82
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/Middleware/Middleware.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Show how to sue Middleware
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
// New middleware classes can be created!
class MyMiddleware : public AsyncMiddleware {
public:
void run(AsyncWebServerRequest *request, ArMiddlewareNext next) override {
Serial.printf("Before handler: %s %s\n", request->methodToString(), request->url().c_str());
next(); // continue middleware chain
Serial.printf("After handler: response code=%d\n", request->getResponse()->code());
}
};
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// add a global middleware to the server
server.addMiddleware(new MyMiddleware());
// Test with:
//
// - curl -v http://192.168.4.1/ => 200 OK
// - curl -v http://192.168.4.1/?user=anon => 403 Forbidden
// - curl -v http://192.168.4.1/?user=foo => 200 OK
// - curl -v http://192.168.4.1/?user=error => 400 ERROR
//
AsyncCallbackWebHandler &handler = server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
Serial.printf("In Handler: %s %s\n", request->methodToString(), request->url().c_str());
request->send(200, "text/plain", "Hello, world!");
});
// add a middleware to this handler only to send 403 if the user is anon
handler.addMiddleware([](AsyncWebServerRequest *request, ArMiddlewareNext next) {
Serial.println("Checking user=anon");
if (request->hasParam("user") && request->getParam("user")->value() == "anon") {
request->send(403, "text/plain", "Forbidden");
} else {
next();
}
});
// add a middleware to this handler that will replace the previously created response by another one
handler.addMiddleware([](AsyncWebServerRequest *request, ArMiddlewareNext next) {
next();
Serial.println("Checking user=error");
if (request->hasParam("user") && request->getParam("user")->value() == "error") {
request->send(400, "text/plain", "ERROR");
}
});
server.begin();
}
// not needed
void loop() {
delay(100);
}

122
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Query parameters and body parameters
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
static const char *htmlContent PROGMEM = R"(
<!DOCTYPE html>
<html>
<head>
<title>POST Request with Multiple Parameters</title>
</head>
<body>
<form action="http://192.168.4.1" method="POST">
<label for="who">Who?</label>
<input type="text" id="who" name="who" value="Carl"><br>
<label for="g0">g0:</label>
<input type="text" id="g0" name="g0" value="1"><br>
<label for="a0">a0:</label>
<input type="text" id="a0" name="a0" value="2"><br>
<label for="n0">n0:</label>
<input type="text" id="n0" name="n0" value="3"><br>
<label for="t10">t10:</label>
<input type="text" id="t10" name="t10" value="3"><br>
<label for="t20">t20:</label>
<input type="text" id="t20" name="t20" value="4"><br>
<label for="t30">t30:</label>
<input type="text" id="t30" name="t30" value="5"><br>
<label for="t40">t40:</label>
<input type="text" id="t40" name="t40" value="6"><br>
<label for="t50">t50:</label>
<input type="text" id="t50" name="t50" value="7"><br>
<label for="g1">g1:</label>
<input type="text" id="g1" name="g1" value="2"><br>
<label for="a1">a1:</label>
<input type="text" id="a1" name="a1" value="2"><br>
<label for="n1">n1:</label>
<input type="text" id="n1" name="n1" value="3"><br>
<label for="t11">t11:</label>
<input type="text" id="t11" name="t11" value="13"><br>
<label for="t21">t21:</label>
<input type="text" id="t21" name="t21" value="14"><br>
<label for="t31">t31:</label>
<input type="text" id="t31" name="t31" value="15"><br>
<label for="t41">t41:</label>
<input type="text" id="t41" name="t41" value="16"><br>
<label for="t51">t51:</label>
<input type="text" id="t51" name="t51" value="17"><br>
<input type="submit" value="Submit">
</form>
</body>
</html>
)";
static const size_t htmlContentLength = strlen_P(htmlContent);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// Get query parameters
//
// curl -v http://192.168.4.1/?who=Bob
//
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
if (request->hasParam("who")) {
Serial.printf("Who? %s\n", request->getParam("who")->value().c_str());
}
request->send(200, "text/html", (uint8_t *)htmlContent, htmlContentLength);
});
// Get form body parameters
//
// curl -v -H "Content-Type: application/x-www-form-urlencoded" -d "who=Carl" -d "param=value" http://192.168.4.1/
//
server.on("/", HTTP_POST, [](AsyncWebServerRequest *request) {
// display params
size_t count = request->params();
for (size_t i = 0; i < count; i++) {
const AsyncWebParameter *p = request->getParam(i);
Serial.printf("PARAM[%u]: %s = %s\n", i, p->name().c_str(), p->value().c_str());
}
// get who param
String who;
if (request->hasParam("who", true)) {
who = request->getParam("who", true)->value();
} else {
who = "No message sent";
}
request->send(200, "text/plain", "Hello " + who + "!");
});
server.begin();
}
// not needed
void loop() {
delay(100);
}

130
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/PartitionDownloader/PartitionDownloader.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// - Download ESP32 partition by name and/or type and/or subtype
// - Support encrypted and non-encrypted partitions
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
#include <LittleFS.h>
#ifndef ESP32
// this example is only for the ESP32
void setup() {}
void loop() {}
#else
#include <esp_partition.h>
static AsyncWebServer server(80);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
LittleFS.begin(true);
// To upload the FS partition, run:
// > pio run -e arduino-3 -t buildfs
// > pio run -e arduino-3 -t uploadfs
//
// Examples:
//
// - Download the partition named "spiffs": http://192.168.4.1/partition?label=spiffs
// - Download the partition named "spiffs" with type "data": http://192.168.4.1/partition?label=spiffs&type=1
// - Download the partition named "spiffs" with type "data" and subtype "spiffs": http://192.168.4.1/partition?label=spiffs&type=1&subtype=130
// - Download the partition with subtype "nvs": http://192.168.4.1/partition?type=1&subtype=2
//
// "type" and "subtype" IDs can be found in esp_partition.h header file.
//
// Add "&raw=false" parameter to download the partition unencrypted (for encrypted partitions).
// By default, the raw partition is downloaded, so if a partition is encrypted, the encrypted data will be downloaded.
//
// To browse a downloaded LittleFS partition, you can use https://tniessen.github.io/littlefs-disk-img-viewer/ (block size is 4096)
//
server.on("/partition", HTTP_GET, [](AsyncWebServerRequest *request) {
const AsyncWebParameter *pLabel = request->getParam("label");
const AsyncWebParameter *pType = request->getParam("type");
const AsyncWebParameter *pSubtype = request->getParam("subtype");
const AsyncWebParameter *pRaw = request->getParam("raw");
if (!pLabel && !pType && !pSubtype) {
request->send(400, "text/plain", "Bad request: missing parameter");
return;
}
esp_partition_type_t type = ESP_PARTITION_TYPE_ANY;
esp_partition_subtype_t subtype = ESP_PARTITION_SUBTYPE_ANY;
const char *label = nullptr;
bool raw = true;
if (pLabel) {
label = pLabel->value().c_str();
}
if (pType) {
type = (esp_partition_type_t)pType->value().toInt();
}
if (pSubtype) {
subtype = (esp_partition_subtype_t)pSubtype->value().toInt();
}
if (pRaw && pRaw->value() == "false") {
raw = false;
}
const esp_partition_t *partition = esp_partition_find_first(type, subtype, label);
if (!partition) {
request->send(404, "text/plain", "Partition not found");
return;
}
AsyncWebServerResponse *response =
request->beginChunkedResponse("application/octet-stream", [partition, raw](uint8_t *buffer, size_t maxLen, size_t index) -> size_t {
const size_t remaining = partition->size - index;
if (!remaining) {
return 0;
}
const size_t len = std::min(maxLen, remaining);
if (raw && esp_partition_read_raw(partition, index, buffer, len) == ESP_OK) {
return len;
}
if (!raw && esp_partition_read(partition, index, buffer, len) == ESP_OK) {
return len;
}
return 0;
});
response->addHeader("Content-Disposition", "attachment; filename=" + String(partition->label) + ".bin");
response->setContentLength(partition->size);
request->send(response);
});
server.begin();
}
void loop() {
delay(100);
}
#endif

243
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/PerfTests/PerfTests.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Perf tests
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static const char *htmlContent PROGMEM = R"(
<!DOCTYPE html>
<html>
<head>
<title>Sample HTML</title>
</head>
<body>
<h1>Hello, World!</h1>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
</body>
</html>
)";
static const size_t htmlContentLength = strlen_P(htmlContent);
static constexpr char characters[] = "0123456789ABCDEF";
static size_t charactersIndex = 0;
static AsyncWebServer server(80);
static AsyncEventSource events("/events");
static volatile size_t requests = 0;
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// Pauses in the request parsing phase
//
// autocannon -c 32 -w 32 -a 96 -t 30 --renderStatusCodes -m POST -H "Content-Type: application/json" -b '{"foo": "bar"}' http://192.168.4.1/delay
//
// curl -v -X POST -H "Content-Type: application/json" -d '{"game": "test"}' http://192.168.4.1/delay
//
server.onNotFound([](AsyncWebServerRequest *request) {
requests = requests + 1;
if (request->url() == "/delay") {
request->send(200, "application/json", "{\"status\":\"OK\"}");
} else {
request->send(404, "text/plain", "Not found");
}
});
server.onRequestBody([](AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total) {
if (request->url() == "/delay") {
delay(3000);
}
});
// HTTP endpoint
//
// > brew install autocannon
// > autocannon -c 10 -w 10 -d 20 http://192.168.4.1
// > autocannon -c 16 -w 16 -d 20 http://192.168.4.1
//
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
// need to cast to uint8_t*
// if you do not, the const char* will be copied in a temporary String buffer
requests = requests + 1;
request->send(200, "text/html", (uint8_t *)htmlContent, htmlContentLength);
});
// IMPORTANT - DO NOT WRITE SUCH CODE IN PRODUCTON !
//
// This example simulates the slowdown that can happen when:
// - downloading a huge file from sdcard
// - doing some file listing on SDCard because it is horribly slow to get a file listing with file stats on SDCard.
// So in both cases, ESP would deadlock or TWDT would trigger.
//
// This example simulats that by slowing down the chunk callback:
// - d=2000 is the delay in ms in the callback
// - l=10000 is the length of the response
//
// time curl -N -v -G -d 'd=2000' -d 'l=10000' http://192.168.4.1/slow.html --output -
//
server.on("/slow.html", HTTP_GET, [](AsyncWebServerRequest *request) {
requests = requests + 1;
uint32_t d = request->getParam("d")->value().toInt();
uint32_t l = request->getParam("l")->value().toInt();
Serial.printf("d = %" PRIu32 ", l = %" PRIu32 "\n", d, l);
AsyncWebServerResponse *response = request->beginChunkedResponse("text/html", [d, l](uint8_t *buffer, size_t maxLen, size_t index) -> size_t {
Serial.printf("%u\n", index);
// finished ?
if (index >= l) {
return 0;
}
// slow down the task to simulate some heavy processing, like SD card reading
delay(d);
memset(buffer, characters[charactersIndex], 256);
charactersIndex = (charactersIndex + 1) % sizeof(characters);
return 256;
});
request->send(response);
});
// SSS endpoint
//
// launch 16 concurrent workers for 30 seconds
// > for i in {1..10}; do ( count=$(gtimeout 30 curl -s -N -H "Accept: text/event-stream" http://192.168.4.1/events 2>&1 | grep -c "^data:"); echo "Total: $count events, $(echo "$count / 4" | bc -l) events / second" ) & done;
// > for i in {1..16}; do ( count=$(gtimeout 30 curl -s -N -H "Accept: text/event-stream" http://192.168.4.1/events 2>&1 | grep -c "^data:"); echo "Total: $count events, $(echo "$count / 4" | bc -l) events / second" ) & done;
//
// With AsyncTCP, with 16 workers: a lot of "Event message queue overflow: discard message", no crash
//
// Total: 1711 events, 427.75 events / second
// Total: 1711 events, 427.75 events / second
// Total: 1626 events, 406.50 events / second
// Total: 1562 events, 390.50 events / second
// Total: 1706 events, 426.50 events / second
// Total: 1659 events, 414.75 events / second
// Total: 1624 events, 406.00 events / second
// Total: 1706 events, 426.50 events / second
// Total: 1487 events, 371.75 events / second
// Total: 1573 events, 393.25 events / second
// Total: 1569 events, 392.25 events / second
// Total: 1559 events, 389.75 events / second
// Total: 1560 events, 390.00 events / second
// Total: 1562 events, 390.50 events / second
// Total: 1626 events, 406.50 events / second
//
// With AsyncTCP, with 10 workers:
//
// Total: 2038 events, 509.50 events / second
// Total: 2120 events, 530.00 events / second
// Total: 2119 events, 529.75 events / second
// Total: 2038 events, 509.50 events / second
// Total: 2037 events, 509.25 events / second
// Total: 2119 events, 529.75 events / second
// Total: 2119 events, 529.75 events / second
// Total: 2120 events, 530.00 events / second
// Total: 2038 events, 509.50 events / second
// Total: 2038 events, 509.50 events / second
//
// With AsyncTCPSock, with 16 workers: ESP32 CRASH !!!
//
// With AsyncTCPSock, with 10 workers:
//
// Total: 1242 events, 310.50 events / second
// Total: 1242 events, 310.50 events / second
// Total: 1242 events, 310.50 events / second
// Total: 1242 events, 310.50 events / second
// Total: 1181 events, 295.25 events / second
// Total: 1182 events, 295.50 events / second
// Total: 1240 events, 310.00 events / second
// Total: 1181 events, 295.25 events / second
// Total: 1181 events, 295.25 events / second
// Total: 1183 events, 295.75 events / second
//
server.addHandler(&events);
server.begin();
}
static uint32_t lastSSE = 0;
static uint32_t deltaSSE = 10;
static uint32_t lastHeap = 0;
void loop() {
uint32_t now = millis();
if (now - lastSSE >= deltaSSE) {
events.send(String("ping-") + now, "heartbeat", now);
lastSSE = millis();
}
#ifdef ESP32
if (now - lastHeap >= 2000) {
Serial.printf("Uptime: %3lu s, requests: %3u, Free heap: %" PRIu32 "\n", millis() / 1000, requests, ESP.getFreeHeap());
lastHeap = now;
}
#endif
}

64
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Show how to rate limit the server or some endpoints
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
static AsyncRateLimitMiddleware rateLimit;
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// maximum 5 requests per 10 seconds
rateLimit.setMaxRequests(5);
rateLimit.setWindowSize(10);
// run quickly several times:
//
// curl -v http://192.168.4.1/
//
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
request->send(200, "text/plain", "Hello, world!");
});
// run quickly several times:
//
// curl -v http://192.168.4.1/rate-limited
//
server
.on(
"/rate-limited", HTTP_GET,
[](AsyncWebServerRequest *request) {
request->send(200, "text/plain", "Hello, world!");
}
)
.addMiddleware(&rateLimit); // only rate limit this endpoint, but could be applied globally to the server
server.begin();
}
// not needed
void loop() {
delay(100);
}

48
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/Redirect/Redirect.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Shows how to redirect
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// curl -v http://192.168.4.1/
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
request->redirect("/index.txt");
});
// curl -v http://192.168.4.1/index.txt
server.on("/index.txt", HTTP_GET, [](AsyncWebServerRequest *request) {
request->send(200, "text/plain", "Hello, world!");
});
server.begin();
}
// not needed
void loop() {
delay(100);
}

91
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/RequestContinuation/RequestContinuation.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Shows how to use request continuation to pause a request for a long processing task, and be able to resume it later.
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
#include <list>
#include <mutex>
static AsyncWebServer server(80);
// request handler that is saved from the paused request to communicate with Serial
static String message;
static AsyncWebServerRequestPtr serialRequest;
// request handler that is saved from the paused request to communicate with GPIO
static uint8_t pin = 35;
static AsyncWebServerRequestPtr gpioRequest;
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// Post a message that will be sent to the Serial console, and pause the request until the user types a key
//
// curl -v -X POST -H "Content-Type: application/x-www-form-urlencoded" -d "question=Name%3F%20" http://192.168.4.1/serial
//
// curl output should show "Answer: [y/n]" as the response
server.on("/serial", HTTP_POST, [](AsyncWebServerRequest *request) {
message = request->getParam("question", true)->value();
serialRequest = request->pause();
});
// Wait for a GPIO to be high
//
// curl -v http://192.168.4.1/gpio
//
// curl output should show "GPIO is high!" as the response
server.on("/gpio", HTTP_GET, [](AsyncWebServerRequest *request) {
gpioRequest = request->pause();
});
pinMode(pin, INPUT);
server.begin();
}
void loop() {
delay(500);
// Check for a high voltage on the RX1 pin
if (digitalRead(pin) == HIGH) {
if (auto request = gpioRequest.lock()) {
request->send(200, "text/plain", "GPIO is high!");
}
}
// check for an incoming message from the Serial console
if (message.length()) {
Serial.printf("%s", message.c_str());
// drops buffer
while (Serial.available()) {
Serial.read();
}
Serial.setTimeout(10000);
String response = Serial.readStringUntil('\n'); // waits for a key to be pressed
Serial.println();
message = emptyString;
if (auto request = serialRequest.lock()) {
request->send(200, "text/plain", "Answer: " + response);
}
}
}

165
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/RequestContinuationComplete/RequestContinuationComplete.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Shows how to use request continuation to pause a request for a long processing task, and be able to resume it later.
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
#include <list>
#include <memory>
#include <mutex>
static AsyncWebServer server(80);
// ===============================================================
// The code below is used to simulate some long running operations
// ===============================================================
typedef struct {
size_t id;
AsyncWebServerRequestPtr requestPtr;
uint8_t data;
} LongRunningOperation;
static std::list<std::unique_ptr<LongRunningOperation>> longRunningOperations;
static size_t longRunningOperationsCount = 0;
#ifdef ESP32
static std::mutex longRunningOperationsMutex;
#endif
static void startLongRunningOperation(AsyncWebServerRequestPtr &&requestPtr) {
#ifdef ESP32
std::lock_guard<std::mutex> lock(longRunningOperationsMutex);
#endif
// LongRunningOperation *op = new LongRunningOperation();
std::unique_ptr<LongRunningOperation> op(new LongRunningOperation());
op->id = ++longRunningOperationsCount;
op->data = 10;
// you need to hold the AsyncWebServerRequestPtr returned by pause();
// This object is authorized to leave the scope of the request handler.
op->requestPtr = std::move(requestPtr);
Serial.printf("[%u] Start long running operation for %" PRIu8 " seconds...\n", op->id, op->data);
longRunningOperations.push_back(std::move(op));
}
static bool processLongRunningOperation(LongRunningOperation *op) {
// request was deleted ?
if (op->requestPtr.expired()) {
Serial.printf("[%u] Request was deleted - stopping long running operation\n", op->id);
return true; // operation finished
}
// processing the operation
Serial.printf("[%u] Long running operation processing... %" PRIu8 " seconds left\n", op->id, op->data);
// check if we have finished ?
op->data--;
if (op->data) {
// not finished yet
return false;
}
// Try to get access to the request pointer if it is still exist.
// If there has been a disconnection during that time, the pointer won't be valid anymore
if (auto request = op->requestPtr.lock()) {
Serial.printf("[%u] Long running operation finished! Sending back response...\n", op->id);
request->send(200, "text/plain", String(op->id) + " ");
} else {
Serial.printf("[%u] Long running operation finished, but request was deleted!\n", op->id);
}
return true; // operation finished
}
/// ==========================================================
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// Add a middleware to see how pausing a request affects the middleware chain
server.addMiddleware([](AsyncWebServerRequest *request, ArMiddlewareNext next) {
Serial.printf("Middleware chain start\n");
// continue to the next middleware, and at the end the request handler
next();
// we can check the request pause state after the handler was executed
if (request->isPaused()) {
Serial.printf("Request was paused!\n");
}
Serial.printf("Middleware chain ends\n");
});
// HOW TO RUN THIS EXAMPLE:
//
// 1. Open several terminals to trigger some requests concurrently that will be paused with:
// > time curl -v http://192.168.4.1/
//
// 2. Look at the output of the Serial console to see how the middleware chain is executed
// and to see the long running operations being processed and resume the requests.
//
// 3. You can try close your curl command to cancel the request and check that the request is deleted.
// Note: in case the network is disconnected, the request will be deleted.
//
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
// Print a message in case the request is disconnected (network disconnection, client close, etc.)
request->onDisconnect([]() {
Serial.printf("Request was disconnected!\n");
});
// Instruct ESPAsyncWebServer to pause the request and get a AsyncWebServerRequestPtr to be able to access the request later.
// The AsyncWebServerRequestPtr is the ONLY object authorized to leave the scope of the request handler.
// The Middleware chain will continue to run until the end after this handler exit, but the request will be paused and will not
// be sent to the client until send() is called later.
Serial.printf("Pausing request...\n");
AsyncWebServerRequestPtr requestPtr = request->pause();
// start our long operation...
startLongRunningOperation(std::move(requestPtr));
});
server.begin();
}
static uint32_t lastTime = 0;
void loop() {
if (millis() - lastTime >= 1000) {
#ifdef ESP32
Serial.printf("Free heap: %" PRIu32 "\n", ESP.getFreeHeap());
std::lock_guard<std::mutex> lock(longRunningOperationsMutex);
#endif
// process all long running operations
longRunningOperations.remove_if([](const std::unique_ptr<LongRunningOperation> &op) {
return processLongRunningOperation(op.get());
});
lastTime = millis();
}
}

61
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/ResumableDownload/ResumableDownload.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Make sure resumable downloads can be implemented (HEAD request / response and Range header)
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
/*
❯ curl -I -X HEAD http://192.168.4.1/download
HTTP/1.1 200 OK
Content-Length: 1024
Content-Type: application/octet-stream
Connection: close
Accept-Ranges: bytes
*/
// Ref: https://github.com/mathieucarbou/ESPAsyncWebServer/pull/80
server.on("/download", HTTP_HEAD | HTTP_GET, [](AsyncWebServerRequest *request) {
if (request->method() == HTTP_HEAD) {
AsyncWebServerResponse *response = request->beginResponse(200, "application/octet-stream");
response->addHeader(asyncsrv::T_Accept_Ranges, "bytes");
response->addHeader(asyncsrv::T_Content_Length, 10);
response->setContentLength(1024); // make sure we can overrides previously set content length
response->addHeader(asyncsrv::T_Content_Type, "foo");
response->setContentType("application/octet-stream"); // make sure we can overrides previously set content type
// ...
request->send(response);
} else {
// ...
}
});
server.begin();
}
void loop() {
delay(100);
}

52
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/Rewrite/Rewrite.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Shows how to rewrite URLs
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// curl -v http://192.168.4.1/index.txt
server.on("/index.txt", HTTP_GET, [](AsyncWebServerRequest *request) {
request->send(200, "text/plain", "Hello, world!");
});
// curl -v http://192.168.4.1/index.txt
server.on("/index.html", HTTP_GET, [](AsyncWebServerRequest *request) {
request->send(200, "text/html", "<h1>Hello, world!</h1>");
});
// curl -v http://192.168.4.1/
server.rewrite("/", "/index.html");
server.rewrite("/index.txt", "/index.html"); // will hide the .txt file
server.begin();
}
// not needed
void loop() {
delay(100);
}

105
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/ServerSentEvents/ServerSentEvents.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// SSE example
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static const char *htmlContent PROGMEM = R"(
<!DOCTYPE html>
<html>
<head>
<title>Server-Sent Events</title>
<script>
if (!!window.EventSource) {
var source = new EventSource('/events');
source.addEventListener('open', function(e) {
console.log("Events Connected");
}, false);
source.addEventListener('error', function(e) {
if (e.target.readyState != EventSource.OPEN) {
console.log("Events Disconnected");
}
}, false);
source.addEventListener('message', function(e) {
console.log("message", e.data);
}, false);
source.addEventListener('heartbeat', function(e) {
console.log("heartbeat", e.data);
}, false);
}
</script>
</head>
<body>
<h1>Open your browser console!</h1>
</body>
</html>
)";
static const size_t htmlContentLength = strlen_P(htmlContent);
static AsyncWebServer server(80);
static AsyncEventSource events("/events");
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// curl -v http://192.168.4.1/
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
// need to cast to uint8_t*
// if you do not, the const char* will be copied in a temporary String buffer
request->send(200, "text/html", (uint8_t *)htmlContent, htmlContentLength);
});
events.onConnect([](AsyncEventSourceClient *client) {
Serial.printf("SSE Client connected! ID: %" PRIu32 "\n", client->lastId());
client->send("hello!", NULL, millis(), 1000);
});
events.onDisconnect([](AsyncEventSourceClient *client) {
Serial.printf("SSE Client disconnected! ID: %" PRIu32 "\n", client->lastId());
});
server.addHandler(&events);
server.begin();
}
static uint32_t lastSSE = 0;
static uint32_t deltaSSE = 3000;
static uint32_t lastHeap = 0;
void loop() {
uint32_t now = millis();
if (now - lastSSE >= deltaSSE) {
events.send(String("ping-") + now, "heartbeat", now);
lastSSE = millis();
}
#ifdef ESP32
if (now - lastHeap >= 2000) {
Serial.printf("Free heap: %" PRIu32 "\n", ESP.getFreeHeap());
lastHeap = now;
}
#endif
}

141
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/ServerSentEvents_PR156/ServerSentEvents_PR156.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// SSE example
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static const char *htmlContent PROGMEM = R"(
<!DOCTYPE html>
<html>
<head>
<title>Server-Sent Events</title>
<script>
if (!!window.EventSource) {
var source = new EventSource('/events');
source.onopen = function(e) {
console.log("Events Connected");
};
source.onerror = function(e) {
if (e.target.readyState != EventSource.OPEN) {
console.log("Events Disconnected");
}
// Uncomment below to prevent the client from proactively establishing a new connection.
// source.close();
};
source.onmessage = function(e) {
console.log("Message: " + e.data);
};
source.addEventListener('heartbeat', function(e) {
console.log("Heartbeat", e.data);
}, false);
}
</script>
</head>
<body>
<h1>Open your browser console!</h1>
</body>
</html>
)";
static const size_t htmlContentLength = strlen_P(htmlContent);
static AsyncWebServer server(80);
static AsyncEventSource events("/events");
static volatile size_t connectionCount = 0;
static volatile uint32_t timestampConnected = 0;
static constexpr uint32_t timeoutClose = 15000;
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// curl -v http://192.168.4.1/
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
// need to cast to uint8_t*
// if you do not, the const char* will be copied in a temporary String buffer
request->send(200, "text/html", (uint8_t *)htmlContent, htmlContentLength);
});
events.onConnect([](AsyncEventSourceClient *client) {
/**
* @brief: Purpose for a test case: count() function
* Task watchdog shall be triggered due to a self-deadlock by mutex handling of the AsyncEventSource.
*
* E (61642) task_wdt: Task watchdog got triggered. The following tasks did not reset the watchdog in time:
* E (61642) task_wdt: - async_tcp (CPU 0/1)
*
* Resolve: using recursive_mutex insteads of mutex.
*/
connectionCount = events.count();
timestampConnected = millis();
Serial.printf("SSE Client connected! ID: %" PRIu32 "\n", client->lastId());
client->send("hello!", NULL, millis(), 1000);
Serial.printf("Number of connected clients: %u\n", connectionCount);
});
events.onDisconnect([](AsyncEventSourceClient *client) {
connectionCount = events.count();
Serial.printf("SSE Client disconnected! ID: %" PRIu32 "\n", client->lastId());
Serial.printf("Number of connected clients: %u\n", connectionCount);
});
server.addHandler(&events);
server.begin();
}
static constexpr uint32_t deltaSSE = 3000;
static uint32_t lastSSE = 0;
static uint32_t lastHeap = 0;
void loop() {
uint32_t now = millis();
if (connectionCount > 0) {
if (now - lastSSE >= deltaSSE) {
events.send(String("ping-") + now, "heartbeat", now);
lastSSE = millis();
}
/**
* @brief: Purpose for a test case: close() function
* Task watchdog shall be triggered due to a self-deadlock by mutex handling of the AsyncEventSource.
*
* E (61642) task_wdt: Task watchdog got triggered. The following tasks did not reset the watchdog in time:
* E (61642) task_wdt: - async_tcp (CPU 0/1)
*
* Resolve: using recursive_mutex insteads of mutex.
*/
if (now - timestampConnected >= timeoutClose) {
Serial.printf("SSE Clients close\n");
events.close();
}
}
#ifdef ESP32
if (now - lastHeap >= 2000) {
Serial.printf("Free heap: %" PRIu32 "\n", ESP.getFreeHeap());
lastHeap = now;
}
#endif
}

66
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/ServerState/ServerState.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Server state example
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server1(80);
static AsyncWebServer server2(80);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// server state returns one of the tcp_state enum values:
// enum tcp_state {
// CLOSED = 0,
// LISTEN = 1,
// SYN_SENT = 2,
// SYN_RCVD = 3,
// ESTABLISHED = 4,
// FIN_WAIT_1 = 5,
// FIN_WAIT_2 = 6,
// CLOSE_WAIT = 7,
// CLOSING = 8,
// LAST_ACK = 9,
// TIME_WAIT = 10
// };
assert(server1.state() == tcp_state::CLOSED);
assert(server2.state() == tcp_state::CLOSED);
server1.begin();
assert(server1.state() == tcp_state::LISTEN);
assert(server2.state() == tcp_state::CLOSED);
server2.begin();
assert(server1.state() == tcp_state::LISTEN);
assert(server2.state() == tcp_state::CLOSED);
Serial.println("Done!");
}
void loop() {
delay(100);
}

73
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/SkipServerMiddleware/SkipServerMiddleware.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Authentication and authorization middlewares
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
static AsyncAuthenticationMiddleware basicAuth;
static AsyncLoggingMiddleware logging;
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// basic authentication
basicAuth.setUsername("admin");
basicAuth.setPassword("admin");
basicAuth.setRealm("MyApp");
basicAuth.setAuthFailureMessage("Authentication failed");
basicAuth.setAuthType(AsyncAuthType::AUTH_BASIC);
basicAuth.generateHash(); // precompute hash (optional but recommended)
// logging middleware
logging.setEnabled(true);
logging.setOutput(Serial);
// we apply auth middleware to the server globally
server.addMiddleware(&basicAuth);
// protected endpoint: requires basic authentication
// curl -v -u admin:admin http://192.168.4.1/
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
request->send(200, "text/plain", "Hello, world!");
});
// we skip all global middleware from the catchall handler
server.catchAllHandler().skipServerMiddlewares();
// we apply a specific middleware to the catchall handler only to log requests without a handler defined
server.catchAllHandler().addMiddleware(&logging);
// standard 404 handler: will display the request in the console i na curl-like style
// curl -v -H "Foo: Bar" http://192.168.4.1/foo
server.onNotFound([](AsyncWebServerRequest *request) {
request->send(404, "text/plain", "Not found");
});
server.begin();
}
// not needed
void loop() {
delay(100);
}

152
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/SlowChunkResponse/SlowChunkResponse.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Simulate a slow response in a chunk response (like file download from SD Card)
// poll events will be throttled.
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
static const char *htmlContent PROGMEM = R"(
<!DOCTYPE html>
<html>
<head>
<title>Sample HTML</title>
</head>
<body>
<h1>Hello, World!</h1>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
</body>
</html>
)";
static const size_t htmlContentLength = strlen_P(htmlContent);
static constexpr char characters[] = "0123456789ABCDEF";
static size_t charactersIndex = 0;
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// curl -v http://192.168.4.1/
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
// need to cast to uint8_t*
// if you do not, the const char* will be copied in a temporary String buffer
request->send(200, "text/html", (uint8_t *)htmlContent, htmlContentLength);
});
// IMPORTANT - DO NOT WRITE SUCH CODE IN PRODUCTON !
//
// This example simulates the slowdown that can happen when:
// - downloading a huge file from sdcard
// - doing some file listing on SDCard because it is horribly slow to get a file listing with file stats on SDCard.
// So in both cases, ESP would deadlock or TWDT would trigger.
//
// This example simulats that by slowing down the chunk callback:
// - d=2000 is the delay in ms in the callback
// - l=10000 is the length of the response
//
// time curl -N -v -G -d 'd=2000' -d 'l=10000' http://192.168.4.1/slow.html --output -
//
server.on("/slow.html", HTTP_GET, [](AsyncWebServerRequest *request) {
uint32_t d = request->getParam("d")->value().toInt();
uint32_t l = request->getParam("l")->value().toInt();
Serial.printf("d = %" PRIu32 ", l = %" PRIu32 "\n", d, l);
AsyncWebServerResponse *response = request->beginChunkedResponse("text/html", [d, l](uint8_t *buffer, size_t maxLen, size_t index) -> size_t {
Serial.printf("%u\n", index);
// finished ?
if (index >= l) {
return 0;
}
// slow down the task to simulate some heavy processing, like SD card reading
delay(d);
memset(buffer, characters[charactersIndex], 256);
charactersIndex = (charactersIndex + 1) % sizeof(characters);
return 256;
});
request->send(response);
});
server.begin();
}
static uint32_t lastHeap = 0;
void loop() {
#ifdef ESP32
uint32_t now = millis();
if (now - lastHeap >= 2000) {
Serial.printf("Free heap: %" PRIu32 "\n", ESP.getFreeHeap());
lastHeap = now;
}
#endif
}

178
WiFiX-Enhanced/.pio/libdeps/esp32_main/ESPAsyncWebServer/examples/StaticFile/StaticFile.ino Normal file
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Shows how to serve a static file
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
#include <LittleFS.h>
static AsyncWebServer server(80);
static const char *htmlContent PROGMEM = R"(
<!DOCTYPE html>
<html>
<head>
<title>Sample HTML</title>
</head>
<body>
<h1>Hello, World!</h1>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin euismod, purus a euismod
rhoncus, urna ipsum cursus massa, eu dictum tellus justo ac justo. Quisque ullamcorper
arcu nec tortor ullamcorper, vel fermentum justo fermentum. Vivamus sed velit ut elit
accumsan congue ut ut enim. Ut eu justo eu lacus varius gravida ut a tellus. Nulla facilisi.
Integer auctor consectetur ultricies. Fusce feugiat, mi sit amet bibendum viverra, orci leo
dapibus elit, id varius sem dui id lacus.</p>
</body>
</html>
)";
static const size_t htmlContentLength = strlen_P(htmlContent);
// sample_html_gz.h
static const uint8_t index2_html_gz[] = {
0x1f, 0x8b, 0x08, 0x08, 0x13, 0x45, 0x92, 0x68, 0x00, 0x03, 0x69, 0x6e, 0x64, 0x65, 0x78, 0x32, 0x2e, 0x68, 0x74, 0x6d, 0x6c, 0x00, 0xed, 0x98, 0xcb,
0x6e, 0xdc, 0x30, 0x0c, 0x45, 0xf7, 0xf3, 0x15, 0xcc, 0xde, 0xb0, 0x91, 0xbd, 0xe1, 0x4d, 0x1f, 0x48, 0x81, 0xbc, 0x8a, 0x26, 0x2d, 0xba, 0xe4, 0x48,
0x8c, 0x87, 0x81, 0x1e, 0x0e, 0x25, 0x19, 0xc8, 0xdf, 0x97, 0xb2, 0x67, 0x82, 0x6c, 0xfa, 0x07, 0x32, 0x0c, 0x58, 0xa6, 0xa8, 0xcb, 0x4b, 0xe9, 0xac,
0x34, 0x5e, 0x7d, 0x7d, 0xf8, 0xf2, 0xf4, 0xf7, 0xf1, 0x1b, 0x9c, 0xb2, 0x77, 0xd3, 0x61, 0xbc, 0x7c, 0x08, 0xed, 0x74, 0x00, 0x7d, 0xc6, 0xcc, 0xd9,
0xd1, 0xf4, 0x0b, 0xfd, 0xe2, 0x08, 0x6e, 0x9e, 0xee, 0x6e, 0xc7, 0x61, 0x0f, 0x1d, 0xc6, 0x61, 0x4f, 0x1b, 0x8f, 0xd1, 0xbe, 0x9f, 0xb3, 0x4f, 0xd7,
0xd3, 0x0d, 0x39, 0x17, 0x3b, 0xf8, 0x13, 0xc5, 0xd9, 0x2b, 0xcd, 0xb9, 0x3e, 0x4f, 0x2d, 0xd3, 0x6d, 0x14, 0xf2, 0xc0, 0x4b, 0x2a, 0x1e, 0x6c, 0x74,
0x51, 0x20, 0x71, 0x06, 0xf4, 0x94, 0x3b, 0x30, 0x31, 0x24, 0x32, 0x99, 0x72, 0x11, 0x40, 0xcb, 0x0b, 0x27, 0xc3, 0x61, 0x06, 0x72, 0x9c, 0x7b, 0x78,
0x94, 0xc8, 0x01, 0xa8, 0x70, 0xf2, 0xd1, 0x76, 0xb0, 0x14, 0x29, 0x09, 0xf0, 0x12, 0xd8, 0xe4, 0xe5, 0x14, 0x83, 0x29, 0xa9, 0x83, 0x22, 0x01, 0xcf,
0x35, 0x4c, 0x91, 0xa4, 0x89, 0x1e, 0x53, 0xc2, 0x4e, 0xb3, 0xc1, 0xb2, 0xc9, 0x1a, 0xcf, 0xea, 0x50, 0xe3, 0xaf, 0x25, 0xe5, 0x08, 0x68, 0xf6, 0x41,
0x0f, 0x3f, 0x55, 0xee, 0xad, 0x10, 0x14, 0xe7, 0xd0, 0x9b, 0x28, 0x0b, 0xc9, 0x26, 0x8d, 0x62, 0x0a, 0x04, 0x32, 0x90, 0xa3, 0xe8, 0xfb, 0x79, 0xbe,
0x83, 0x95, 0x1c, 0xbc, 0x90, 0x78, 0x0a, 0x55, 0x79, 0x97, 0xfc, 0xf8, 0xef, 0xe1, 0x37, 0xaf, 0xe8, 0xb5, 0x56, 0x22, 0x5b, 0x53, 0xb5, 0xdd, 0x92,
0xb7, 0xa6, 0x76, 0x65, 0x63, 0x8a, 0x4f, 0x18, 0x6a, 0xf7, 0x73, 0xad, 0xbc, 0x4f, 0x07, 0xd6, 0x95, 0xcf, 0xb9, 0x3a, 0xde, 0x05, 0x75, 0xe0, 0x50,
0xbb, 0x83, 0x15, 0x85, 0xf5, 0x33, 0x0b, 0xae, 0x6c, 0xb1, 0x26, 0xe3, 0xb9, 0x9b, 0x1e, 0xee, 0xab, 0x2f, 0x78, 0x41, 0xc3, 0x8e, 0x13, 0xf7, 0x5b,
0x81, 0x1f, 0x21, 0xd3, 0x4c, 0xba, 0xa3, 0xc5, 0x54, 0xe7, 0x9f, 0x37, 0xb9, 0xb8, 0x2c, 0x6c, 0x98, 0x74, 0xe5, 0xf7, 0x92, 0x0c, 0xa9, 0xeb, 0x32,
0x33, 0xea, 0x51, 0x78, 0xfe, 0x38, 0x17, 0x38, 0xf2, 0x91, 0x82, 0xd5, 0xce, 0x56, 0x5e, 0x49, 0x44, 0xb7, 0x31, 0x8a, 0x61, 0x70, 0x14, 0x37, 0x7d,
0x8b, 0x0b, 0x1f, 0xd5, 0x50, 0xed, 0xa8, 0x03, 0xb6, 0x17, 0x83, 0x49, 0xcf, 0xd9, 0x16, 0xae, 0x91, 0xcd, 0x78, 0x3f, 0x0e, 0x4b, 0xc3, 0xa0, 0x61,
0xd0, 0x30, 0x68, 0x18, 0x34, 0x0c, 0x1a, 0x06, 0x0d, 0x83, 0x86, 0x41, 0xc3, 0xa0, 0x61, 0xd0, 0x30, 0x68, 0x18, 0x34, 0x0c, 0x1a, 0x06, 0xff, 0xc1,
0x60, 0x1c, 0xf6, 0xab, 0x85, 0x71, 0xd8, 0xee, 0x25, 0xfe, 0x01, 0xa0, 0xec, 0x78, 0xfe, 0xae, 0x10, 0x00, 0x00
};
static const size_t index2_html_gz_len = sizeof(index2_html_gz);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
#ifdef ESP32
LittleFS.begin(true);
#else
LittleFS.begin();
#endif
{
File f = LittleFS.open("/index.html", "w");
assert(f);
f.print(htmlContent);
f.close();
}
{
File f = LittleFS.open("/index2.html.gz", "w");
assert(f);
f.write(index2_html_gz, index2_html_gz_len);
f.close();
}
LittleFS.mkdir("/files");
{
File f = LittleFS.open("/files/a.txt", "w");
assert(f);
f.print("Hello from a.txt");
f.close();
}
{
File f = LittleFS.open("/files/b.txt", "w");
assert(f);
f.print("Hello from b.txt");
f.close();
}
// curl -v http://192.168.4.1/
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
request->redirect("/index.html");
});
// curl -v http://192.168.4.1/index.html
server.serveStatic("/index.html", LittleFS, "/index.html");
// curl -v http://192.168.4.1/index2.html | gunzip -c
server.serveStatic("/index2.html", LittleFS, "/index2.html");
// Example to serve a directory content
// curl -v http://192.168.4.1/base/ => serves a.txt
// curl -v http://192.168.4.1/base/a.txt => serves a.txt
// curl -v http://192.168.4.1/base/b.txt => serves b.txt
server.serveStatic("/base", LittleFS, "/files").setDefaultFile("a.txt");
server.begin();
}
// not needed
void loop() {
delay(100);
}

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Shows how to serve a static and dynamic template
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
#include <LittleFS.h>
static AsyncWebServer server(80);
static const char *htmlContent PROGMEM = R"(
<!DOCTYPE html>
<html>
<body>
<h1>Hello, %USER%</h1>
</body>
</html>
)";
static const size_t htmlContentLength = strlen_P(htmlContent);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
#ifdef ESP32
LittleFS.begin(true);
#else
LittleFS.begin();
#endif
{
File f = LittleFS.open("/template.html", "w");
assert(f);
f.print(htmlContent);
f.close();
}
// Serve the static template file
//
// curl -v http://192.168.4.1/template.html
server.serveStatic("/template.html", LittleFS, "/template.html");
// Serve the static template with a template processor
//
// ServeStatic static is used to serve static output which never changes over time.
// This special endpoints automatically adds caching headers.
// If a template processor is used, it must ensure that the outputted content will always be the same over time and never changes.
// Otherwise, do not use serveStatic.
// Example below: IP never changes.
//
// curl -v http://192.168.4.1/index.html
server.serveStatic("/index.html", LittleFS, "/template.html").setTemplateProcessor([](const String &var) -> String {
if (var == "USER") {
return "Bob";
}
return emptyString;
});
// Serve a template with dynamic content
//
// to serve a template with dynamic content (output changes over time), use normal
// Example below: content changes over tinme do not use serveStatic.
//
// curl -v http://192.168.4.1/dynamic.html
server.on("/dynamic.html", HTTP_GET, [](AsyncWebServerRequest *request) {
request->send(LittleFS, "/template.html", "text/html", false, [](const String &var) -> String {
if (var == "USER") {
return String("Bob ") + millis();
}
return emptyString;
});
});
server.begin();
}
// not needed
void loop() {
delay(100);
}

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// Demo text, binary and file upload
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
#include <StreamString.h>
#include <LittleFS.h>
static AsyncWebServer server(80);
void setup() {
Serial.begin(115200);
if (!LittleFS.begin()) {
LittleFS.format();
LittleFS.begin();
}
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// 1. Generate a Lorem_ipsum.txt file of about 20KB of text
//
// 3. Run: curl -v -F "data=@Lorem_ipsum.txt" http://192.168.4.1/upload/text
//
server.on(
"/upload/text", HTTP_POST,
[](AsyncWebServerRequest *request) {
if (!request->_tempObject) {
return request->send(400, "text/plain", "Nothing uploaded");
}
StreamString *buffer = reinterpret_cast<StreamString *>(request->_tempObject);
Serial.printf("Text uploaded:\n%s\n", buffer->c_str());
delete buffer;
request->_tempObject = nullptr;
request->send(200, "text/plain", "OK");
},
[](AsyncWebServerRequest *request, String filename, size_t index, uint8_t *data, size_t len, bool final) {
Serial.printf("Upload[%s]: start=%u, len=%u, final=%d\n", filename.c_str(), index, len, final);
if (!index) {
// first pass
StreamString *buffer = new StreamString();
size_t size = std::max(4094l, request->header("Content-Length").toInt());
Serial.printf("Allocating string buffer of %u bytes\n", size);
if (!buffer->reserve(size)) {
delete buffer;
request->abort();
}
request->_tempObject = buffer;
}
if (len) {
reinterpret_cast<StreamString *>(request->_tempObject)->write(data, len);
}
}
);
// 1. Generate a Lorem_ipsum.txt file of about 20KB of text
//
// 3. Run: curl -v -F "data=@Lorem_ipsum.txt" http://192.168.4.1/upload/file
//
server.on(
"/upload/file", HTTP_POST,
[](AsyncWebServerRequest *request) {
if (request->getResponse()) {
// 400 File not available for writing
return;
}
if (!LittleFS.exists("/my_file.txt")) {
return request->send(400, "text/plain", "Nothing uploaded");
}
// sends back the uploaded file
request->send(LittleFS, "/my_file.txt", "text/plain");
},
[](AsyncWebServerRequest *request, String filename, size_t index, uint8_t *data, size_t len, bool final) {
Serial.printf("Upload[%s]: start=%u, len=%u, final=%d\n", filename.c_str(), index, len, final);
if (!index) {
request->_tempFile = LittleFS.open("/my_file.txt", "w");
if (!request->_tempFile) {
request->send(400, "text/plain", "File not available for writing");
}
}
if (len) {
request->_tempFile.write(data, len);
}
if (final) {
request->_tempFile.close();
}
}
);
//
// Upload a binary file: curl -v -F "data=@file.mp3" http://192.168.4.1/upload/binary
//
server.on(
"/upload/binary", HTTP_POST,
[](AsyncWebServerRequest *request) {
// response already set ?
if (request->getResponse()) {
// 400 No Content-Length
return;
}
// nothing uploaded ?
if (!request->_tempObject) {
return request->send(400, "text/plain", "Nothing uploaded");
}
uint8_t *buffer = reinterpret_cast<uint8_t *>(request->_tempObject);
// process the buffer
delete buffer;
request->_tempObject = nullptr;
request->send(200, "text/plain", "OK");
},
[](AsyncWebServerRequest *request, String filename, size_t index, uint8_t *data, size_t len, bool final) {
Serial.printf("Upload[%s]: start=%u, len=%u, final=%d\n", filename.c_str(), index, len, final);
// first pass ?
if (!index) {
size_t size = request->header("Content-Length").toInt();
if (!size) {
request->send(400, "text/plain", "No Content-Length");
} else {
Serial.printf("Allocating buffer of %u bytes\n", size);
uint8_t *buffer = new (std::nothrow) uint8_t[size];
if (!buffer) {
// not enough memory
request->abort();
} else {
request->_tempObject = buffer;
}
}
}
if (len) {
memcpy(reinterpret_cast<uint8_t *>(request->_tempObject) + index, data, len);
}
}
);
server.begin();
}
// not needed
void loop() {
delay(100);
}

115
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// WebSocket example
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
static AsyncWebSocket ws("/ws");
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
//
// Run in terminal 1: websocat ws://192.168.4.1/ws => should stream data
// Run in terminal 2: websocat ws://192.168.4.1/ws => should stream data
// Run in terminal 3: websocat ws://192.168.4.1/ws => should fail:
//
// To send a message to the WebSocket server:
//
// echo "Hello!" | websocat ws://192.168.4.1/ws
//
ws.onEvent([](AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventType type, void *arg, uint8_t *data, size_t len) {
(void)len;
if (type == WS_EVT_CONNECT) {
ws.textAll("new client connected");
Serial.println("ws connect");
client->setCloseClientOnQueueFull(false);
client->ping();
} else if (type == WS_EVT_DISCONNECT) {
ws.textAll("client disconnected");
Serial.println("ws disconnect");
} else if (type == WS_EVT_ERROR) {
Serial.println("ws error");
} else if (type == WS_EVT_PONG) {
Serial.println("ws pong");
} else if (type == WS_EVT_DATA) {
AwsFrameInfo *info = (AwsFrameInfo *)arg;
Serial.printf("index: %" PRIu64 ", len: %" PRIu64 ", final: %" PRIu8 ", opcode: %" PRIu8 "\n", info->index, info->len, info->final, info->opcode);
String msg = "";
if (info->final && info->index == 0 && info->len == len) {
if (info->opcode == WS_TEXT) {
data[len] = 0;
Serial.printf("ws text: %s\n", (char *)data);
}
}
}
});
// shows how to prevent a third WS client to connect
server.addHandler(&ws).addMiddleware([](AsyncWebServerRequest *request, ArMiddlewareNext next) {
// ws.count() is the current count of WS clients: this one is trying to upgrade its HTTP connection
if (ws.count() > 1) {
// if we have 2 clients or more, prevent the next one to connect
request->send(503, "text/plain", "Server is busy");
} else {
// process next middleware and at the end the handler
next();
}
});
server.addHandler(&ws);
server.begin();
}
static uint32_t lastWS = 0;
static uint32_t deltaWS = 100;
static uint32_t lastHeap = 0;
void loop() {
uint32_t now = millis();
if (now - lastWS >= deltaWS) {
ws.printfAll("kp%.4f", (10.0 / 3.0));
lastWS = millis();
}
if (now - lastHeap >= 2000) {
Serial.printf("Connected clients: %u / %u total\n", ws.count(), ws.getClients().size());
// this can be called to also set a soft limit on the number of connected clients
ws.cleanupClients(2); // no more than 2 clients
#ifdef ESP32
Serial.printf("Free heap: %" PRIu32 "\n", ESP.getFreeHeap());
#endif
lastHeap = now;
}
}

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
//
// WebSocket example using the easy to use AsyncWebSocketMessageHandler handler that only supports unfragmented messages
//
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#include <WiFi.h>
#endif
#include <ESPAsyncWebServer.h>
static AsyncWebServer server(80);
// create an easy-to-use handler
static AsyncWebSocketMessageHandler wsHandler;
// add it to the websocket server
static AsyncWebSocket ws("/ws", wsHandler.eventHandler());
// alternatively you can do as usual:
//
// static AsyncWebSocket ws("/ws");
// ws.onEvent(wsHandler.eventHandler());
static const char *htmlContent PROGMEM = R"(
<!DOCTYPE html>
<html>
<head>
<title>WebSocket</title>
</head>
<body>
<h1>WebSocket Example</h1>
<>Open your browser console!</p>
<input type="text" id="message" placeholder="Type a message">
<button onclick='sendMessage()'>Send</button>
<script>
var ws = new WebSocket('ws://192.168.4.1/ws');
ws.onopen = function() {
console.log("WebSocket connected");
};
ws.onmessage = function(event) {
console.log("WebSocket message: " + event.data);
};
ws.onclose = function() {
console.log("WebSocket closed");
};
ws.onerror = function(error) {
console.log("WebSocket error: " + error);
};
function sendMessage() {
var message = document.getElementById("message").value;
ws.send(message);
console.log("WebSocket sent: " + message);
}
</script>
</body>
</html>
)";
static const size_t htmlContentLength = strlen_P(htmlContent);
void setup() {
Serial.begin(115200);
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
WiFi.mode(WIFI_AP);
WiFi.softAP("esp-captive");
#endif
// serves root html page
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
request->send(200, "text/html", (const uint8_t *)htmlContent, htmlContentLength);
});
wsHandler.onConnect([](AsyncWebSocket *server, AsyncWebSocketClient *client) {
Serial.printf("Client %" PRIu32 " connected\n", client->id());
server->textAll("New client: " + String(client->id()));
});
wsHandler.onDisconnect([](AsyncWebSocket *server, uint32_t clientId) {
Serial.printf("Client %" PRIu32 " disconnected\n", clientId);
server->textAll("Client " + String(clientId) + " disconnected");
});
wsHandler.onError([](AsyncWebSocket *server, AsyncWebSocketClient *client, uint16_t errorCode, const char *reason, size_t len) {
Serial.printf("Client %" PRIu32 " error: %" PRIu16 ": %s\n", client->id(), errorCode, reason);
});
wsHandler.onMessage([](AsyncWebSocket *server, AsyncWebSocketClient *client, const uint8_t *data, size_t len) {
Serial.printf("Client %" PRIu32 " data: %s\n", client->id(), (const char *)data);
});
wsHandler.onFragment([](AsyncWebSocket *server, AsyncWebSocketClient *client, const AwsFrameInfo *frameInfo, const uint8_t *data, size_t len) {
Serial.printf("Client %" PRIu32 " fragment %" PRIu32 ": %s\n", client->id(), frameInfo->num, (const char *)data);
});
server.addHandler(&ws);
server.begin();
}
static uint32_t lastWS = 0;
static uint32_t deltaWS = 2000;
void loop() {
uint32_t now = millis();
if (now - lastWS >= deltaWS) {
ws.cleanupClients();
ws.printfAll("now: %" PRIu32 "\n", now);
lastWS = millis();
#ifdef ESP32
Serial.printf("Free heap: %" PRIu32 "\n", ESP.getFreeHeap());
#endif
}
}

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{
"name": "ESPAsyncWebServer",
"version": "3.8.1",
"description": "Asynchronous HTTP and WebSocket Server Library for ESP32, ESP8266 and RP2040. Supports: WebSocket, SSE, Authentication, Arduino Json 7, File Upload, Static File serving, URL Rewrite, URL Redirect, etc.",
"keywords": "http,async,websocket,webserver",
"homepage": "https://github.com/ESP32Async/ESPAsyncWebServer",
"repository": {
"type": "git",
"url": "https://github.com/ESP32Async/ESPAsyncWebServer.git"
},
"authors":
{
"name": "ESP32Async",
"maintainer": true
},
"license": "LGPL-3.0",
"frameworks": "arduino",
"platforms": [
"espressif32",
"espressif8266",
"raspberrypi",
"libretiny"
],
"dependencies": [
{
"owner": "ESP32Async",
"name": "AsyncTCP",
"version": "^3.4.8",
"platforms": [
"espressif32",
"libretiny"
]
},
{
"owner": "ESP32Async",
"name": "ESPAsyncTCP",
"version": "^2.0.0",
"platforms": "espressif8266"
},
{
"name": "Hash",
"platforms": "espressif8266"
},
{
"owner": "ayushsharma82",
"name": "RPAsyncTCP",
"version": "^1.3.2",
"platforms": "raspberrypi"
}
],
"export": {
"include": [
"examples",
"src",
"library.json",
"library.properties",
"LICENSE",
"README.md"
]
}
}

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name=ESP Async WebServer
includes=ESPAsyncWebServer.h
version=3.8.1
author=ESP32Async
maintainer=ESP32Async
sentence=Asynchronous HTTP and WebSocket Server Library for ESP32, ESP8266 and RP2040
paragraph=Supports: WebSocket, SSE, Authentication, Arduino Json 7, File Upload, Static File serving, URL Rewrite, URL Redirect, etc
category=Other
url=https://github.com/ESP32Async/ESPAsyncWebServer
architectures=*
license=LGPL-3.0

494
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#include "AsyncEventSource.h"
#include "AsyncWebServerLogging.h"
#define ASYNC_SSE_NEW_LINE_CHAR (char)0xa
using namespace asyncsrv;
static String generateEventMessage(const char *message, const char *event, uint32_t id, uint32_t reconnect) {
String str;
size_t len{0};
if (message) {
len += strlen(message);
}
if (event) {
len += strlen(event);
}
len += 42; // give it some overhead
if (!str.reserve(len)) {
async_ws_log_e("Failed to allocate");
return emptyString;
}
if (reconnect) {
str += T_retry_;
str += reconnect;
str += ASYNC_SSE_NEW_LINE_CHAR; // '\n'
}
if (id) {
str += T_id__;
str += id;
str += ASYNC_SSE_NEW_LINE_CHAR; // '\n'
}
if (event != NULL) {
str += T_event_;
str += event;
str += ASYNC_SSE_NEW_LINE_CHAR; // '\n'
}
if (!message) {
return str;
}
size_t messageLen = strlen(message);
char *lineStart = (char *)message;
char *lineEnd;
do {
char *nextN = strchr(lineStart, '\n');
char *nextR = strchr(lineStart, '\r');
if (nextN == NULL && nextR == NULL) {
// a message is a single-line string
str += T_data_;
str += message;
str += T_nn;
return str;
}
// a message is a multi-line string
char *nextLine = NULL;
if (nextN != NULL && nextR != NULL) { // windows line-ending \r\n
if (nextR + 1 == nextN) {
// normal \r\n sequence
lineEnd = nextR;
nextLine = nextN + 1;
} else {
// some abnormal \n \r mixed sequence
lineEnd = std::min(nextR, nextN);
nextLine = lineEnd + 1;
}
} else if (nextN != NULL) { // Unix/Mac OS X LF
lineEnd = nextN;
nextLine = nextN + 1;
} else { // some ancient garbage
lineEnd = nextR;
nextLine = nextR + 1;
}
str += T_data_;
str.concat(lineStart, lineEnd - lineStart);
str += ASYNC_SSE_NEW_LINE_CHAR; // \n
lineStart = nextLine;
} while (lineStart < ((char *)message + messageLen));
// append another \n to terminate message
str += ASYNC_SSE_NEW_LINE_CHAR; // '\n'
return str;
}
// Message
size_t AsyncEventSourceMessage::ack(size_t len, __attribute__((unused)) uint32_t time) {
// If the whole message is now acked...
if (_acked + len > _data->length()) {
// Return the number of extra bytes acked (they will be carried on to the next message)
const size_t extra = _acked + len - _data->length();
_acked = _data->length();
return extra;
}
// Return that no extra bytes left.
_acked += len;
return 0;
}
size_t AsyncEventSourceMessage::write(AsyncClient *client) {
if (!client) {
return 0;
}
if (_sent >= _data->length() || !client->canSend()) {
return 0;
}
size_t len = std::min(_data->length() - _sent, client->space());
/*
add() would call lwip's tcp_write() under the AsyncTCP hood with apiflags argument.
By default apiflags=ASYNC_WRITE_FLAG_COPY
we could have used apiflags with this flag unset to pass data by reference and avoid copy to socket buffer,
but looks like it does not work for Arduino's lwip in ESP32/IDF
it is enforced in https://github.com/espressif/esp-lwip/blob/0606eed9d8b98a797514fdf6eabb4daf1c8c8cd9/src/core/tcp_out.c#L422C5-L422C30
if LWIP_NETIF_TX_SINGLE_PBUF is set, and it is set indeed in IDF
https://github.com/espressif/esp-idf/blob/a0f798cfc4bbd624aab52b2c194d219e242d80c1/components/lwip/port/include/lwipopts.h#L744
So let's just keep it enforced ASYNC_WRITE_FLAG_COPY and keep in mind that there is no zero-copy
*/
size_t written = client->add(_data->c_str() + _sent, len, ASYNC_WRITE_FLAG_COPY); // ASYNC_WRITE_FLAG_MORE
_sent += written;
return written;
}
size_t AsyncEventSourceMessage::send(AsyncClient *client) {
size_t sent = write(client);
return sent && client->send() ? sent : 0;
}
// Client
AsyncEventSourceClient::AsyncEventSourceClient(AsyncWebServerRequest *request, AsyncEventSource *server) : _client(request->client()), _server(server) {
if (request->hasHeader(T_Last_Event_ID)) {
_lastId = atoi(request->getHeader(T_Last_Event_ID)->value().c_str());
}
_client->setRxTimeout(0);
_client->onError(NULL, NULL);
_client->onAck(
[](void *r, AsyncClient *c, size_t len, uint32_t time) {
(void)c;
static_cast<AsyncEventSourceClient *>(r)->_onAck(len, time);
},
this
);
_client->onPoll(
[](void *r, AsyncClient *c) {
(void)c;
static_cast<AsyncEventSourceClient *>(r)->_onPoll();
},
this
);
_client->onData(NULL, NULL);
_client->onTimeout(
[this](void *r, AsyncClient *c __attribute__((unused)), uint32_t time) {
static_cast<AsyncEventSourceClient *>(r)->_onTimeout(time);
},
this
);
_client->onDisconnect(
[this](void *r, AsyncClient *c) {
static_cast<AsyncEventSourceClient *>(r)->_onDisconnect();
delete c;
},
this
);
_server->_addClient(this);
delete request;
_client->setNoDelay(true);
}
AsyncEventSourceClient::~AsyncEventSourceClient() {
#ifdef ESP32
std::lock_guard<std::recursive_mutex> lock(_lockmq);
#endif
_messageQueue.clear();
close();
}
bool AsyncEventSourceClient::_queueMessage(const char *message, size_t len) {
if (_messageQueue.size() >= SSE_MAX_QUEUED_MESSAGES) {
async_ws_log_e("Event message queue overflow: discard message");
return false;
}
#ifdef ESP32
// length() is not thread-safe, thus acquiring the lock before this call..
std::lock_guard<std::recursive_mutex> lock(_lockmq);
#endif
_messageQueue.emplace_back(message, len);
/*
throttle queue run
if Q is filled for >25% then network/CPU is congested, since there is no zero-copy mode for socket buff
forcing Q run will only eat more heap ram and blow the buffer, let's just keep data in our own queue
the queue will be processed at least on each onAck()/onPoll() call from AsyncTCP
*/
if (_messageQueue.size() < SSE_MAX_QUEUED_MESSAGES >> 2 && _client->canSend()) {
_runQueue();
}
return true;
}
bool AsyncEventSourceClient::_queueMessage(AsyncEvent_SharedData_t &&msg) {
if (_messageQueue.size() >= SSE_MAX_QUEUED_MESSAGES) {
async_ws_log_e("Event message queue overflow: discard message");
return false;
}
#ifdef ESP32
// length() is not thread-safe, thus acquiring the lock before this call..
std::lock_guard<std::recursive_mutex> lock(_lockmq);
#endif
_messageQueue.emplace_back(std::move(msg));
/*
throttle queue run
if Q is filled for >25% then network/CPU is congested, since there is no zero-copy mode for socket buff
forcing Q run will only eat more heap ram and blow the buffer, let's just keep data in our own queue
the queue will be processed at least on each onAck()/onPoll() call from AsyncTCP
*/
if (_messageQueue.size() < SSE_MAX_QUEUED_MESSAGES >> 2 && _client->canSend()) {
_runQueue();
}
return true;
}
void AsyncEventSourceClient::_onAck(size_t len __attribute__((unused)), uint32_t time __attribute__((unused))) {
#ifdef ESP32
// Same here, acquiring the lock early
std::lock_guard<std::recursive_mutex> lock(_lockmq);
#endif
// adjust in-flight len
if (len < _inflight) {
_inflight -= len;
} else {
_inflight = 0;
}
// acknowledge as much messages's data as we got confirmed len from a AsyncTCP
while (len && _messageQueue.size()) {
len = _messageQueue.front().ack(len);
if (_messageQueue.front().finished()) {
// now we could release full ack'ed messages, we were keeping it unless send confirmed from AsyncTCP
_messageQueue.pop_front();
}
}
// try to send another batch of data
if (_messageQueue.size()) {
_runQueue();
}
}
void AsyncEventSourceClient::_onPoll() {
if (_messageQueue.size()) {
#ifdef ESP32
// Same here, acquiring the lock early
std::lock_guard<std::recursive_mutex> lock(_lockmq);
#endif
_runQueue();
}
}
void AsyncEventSourceClient::_onTimeout(uint32_t time __attribute__((unused))) {
if (_client) {
_client->close(true);
}
}
void AsyncEventSourceClient::_onDisconnect() {
if (!_client) {
return;
}
_client = nullptr;
_server->_handleDisconnect(this);
}
void AsyncEventSourceClient::close() {
if (_client) {
_client->close();
}
}
bool AsyncEventSourceClient::send(const char *message, const char *event, uint32_t id, uint32_t reconnect) {
if (!connected()) {
return false;
}
return _queueMessage(std::make_shared<String>(generateEventMessage(message, event, id, reconnect)));
}
void AsyncEventSourceClient::_runQueue() {
if (!_client) {
return;
}
// there is no need to lock the mutex here, 'cause all the calls to this method must be already lock'ed
size_t total_bytes_written = 0;
for (auto i = _messageQueue.begin(); i != _messageQueue.end(); ++i) {
if (!i->sent()) {
const size_t bytes_written = i->write(_client);
total_bytes_written += bytes_written;
_inflight += bytes_written;
if (bytes_written == 0 || _inflight > _max_inflight) {
// Serial.print("_");
break;
}
}
}
// flush socket
if (total_bytes_written) {
_client->send();
}
}
void AsyncEventSourceClient::set_max_inflight_bytes(size_t value) {
if (value >= SSE_MIN_INFLIGH && value <= SSE_MAX_INFLIGH) {
_max_inflight = value;
}
}
/* AsyncEventSource */
void AsyncEventSource::authorizeConnect(ArAuthorizeConnectHandler cb) {
AsyncAuthorizationMiddleware *m = new AsyncAuthorizationMiddleware(401, cb);
m->_freeOnRemoval = true;
addMiddleware(m);
}
void AsyncEventSource::_addClient(AsyncEventSourceClient *client) {
if (!client) {
return;
}
#ifdef ESP32
std::lock_guard<std::recursive_mutex> lock(_client_queue_lock);
#endif
_clients.emplace_back(client);
if (_connectcb) {
_connectcb(client);
}
_adjust_inflight_window();
}
void AsyncEventSource::_handleDisconnect(AsyncEventSourceClient *client) {
if (_disconnectcb) {
_disconnectcb(client);
}
#ifdef ESP32
std::lock_guard<std::recursive_mutex> lock(_client_queue_lock);
#endif
for (auto i = _clients.begin(); i != _clients.end(); ++i) {
if (i->get() == client) {
_clients.erase(i);
break;
}
}
_adjust_inflight_window();
}
void AsyncEventSource::close() {
// While the whole loop is not done, the linked list is locked and so the
// iterator should remain valid even when AsyncEventSource::_handleDisconnect()
// is called very early
#ifdef ESP32
std::lock_guard<std::recursive_mutex> lock(_client_queue_lock);
#endif
for (const auto &c : _clients) {
if (c->connected()) {
/**
* @brief: Fix self-deadlock by using recursive_mutex instead.
* Due to c->close() shall call the callback function _onDisconnect()
* The calling flow _onDisconnect() --> _handleDisconnect() --> deadlock
*/
c->close();
}
}
}
// pmb fix
size_t AsyncEventSource::avgPacketsWaiting() const {
size_t aql = 0;
uint32_t nConnectedClients = 0;
#ifdef ESP32
std::lock_guard<std::recursive_mutex> lock(_client_queue_lock);
#endif
if (!_clients.size()) {
return 0;
}
for (const auto &c : _clients) {
if (c->connected()) {
aql += c->packetsWaiting();
++nConnectedClients;
}
}
return ((aql) + (nConnectedClients / 2)) / (nConnectedClients); // round up
}
AsyncEventSource::SendStatus AsyncEventSource::send(const char *message, const char *event, uint32_t id, uint32_t reconnect) {
AsyncEvent_SharedData_t shared_msg = std::make_shared<String>(generateEventMessage(message, event, id, reconnect));
#ifdef ESP32
std::lock_guard<std::recursive_mutex> lock(_client_queue_lock);
#endif
size_t hits = 0;
size_t miss = 0;
for (const auto &c : _clients) {
if (c->write(shared_msg)) {
++hits;
} else {
++miss;
}
}
return hits == 0 ? DISCARDED : (miss == 0 ? ENQUEUED : PARTIALLY_ENQUEUED);
}
size_t AsyncEventSource::count() const {
#ifdef ESP32
std::lock_guard<std::recursive_mutex> lock(_client_queue_lock);
#endif
size_t n_clients{0};
for (const auto &i : _clients) {
if (i->connected()) {
++n_clients;
}
}
return n_clients;
}
bool AsyncEventSource::canHandle(AsyncWebServerRequest *request) const {
return request->isSSE() && request->url().equals(_url);
}
void AsyncEventSource::handleRequest(AsyncWebServerRequest *request) {
request->send(new AsyncEventSourceResponse(this));
}
void AsyncEventSource::_adjust_inflight_window() {
if (_clients.size()) {
size_t inflight = SSE_MAX_INFLIGH / _clients.size();
for (const auto &c : _clients) {
c->set_max_inflight_bytes(inflight);
}
// Serial.printf("adjusted inflight to: %u\n", inflight);
}
}
/* Response */
AsyncEventSourceResponse::AsyncEventSourceResponse(AsyncEventSource *server) {
_server = server;
_code = 200;
_contentType = T_text_event_stream;
_sendContentLength = false;
addHeader(T_Cache_Control, T_no_cache);
addHeader(T_Connection, T_keep_alive);
}
void AsyncEventSourceResponse::_respond(AsyncWebServerRequest *request) {
String out;
_assembleHead(out, request->version());
request->client()->write(out.c_str(), _headLength);
_state = RESPONSE_WAIT_ACK;
}
size_t AsyncEventSourceResponse::_ack(AsyncWebServerRequest *request, size_t len, uint32_t time __attribute__((unused))) {
if (len) {
new AsyncEventSourceClient(request, _server);
}
return 0;
}

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#ifndef ASYNCEVENTSOURCE_H_
#define ASYNCEVENTSOURCE_H_
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#ifdef LIBRETINY
#ifdef round
#undef round
#endif
#endif
#include <mutex>
#ifndef SSE_MAX_QUEUED_MESSAGES
#define SSE_MAX_QUEUED_MESSAGES 32
#endif
#define SSE_MIN_INFLIGH 2 * 1460 // allow 2 MSS packets
#define SSE_MAX_INFLIGH 16 * 1024 // but no more than 16k, no need to blow it, since same data is kept in local Q
#elif defined(ESP8266)
#include <ESPAsyncTCP.h>
#ifndef SSE_MAX_QUEUED_MESSAGES
#define SSE_MAX_QUEUED_MESSAGES 8
#endif
#define SSE_MIN_INFLIGH 2 * 1460 // allow 2 MSS packets
#define SSE_MAX_INFLIGH 8 * 1024 // but no more than 8k, no need to blow it, since same data is kept in local Q
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#ifndef SSE_MAX_QUEUED_MESSAGES
#define SSE_MAX_QUEUED_MESSAGES 32
#endif
#define SSE_MIN_INFLIGH 2 * 1460 // allow 2 MSS packets
#define SSE_MAX_INFLIGH 16 * 1024 // but no more than 16k, no need to blow it, since same data is kept in local Q
#endif
#include <ESPAsyncWebServer.h>
#ifdef ESP8266
#include <Hash.h>
#ifdef CRYPTO_HASH_h // include Hash.h from espressif framework if the first include was from the crypto library
#include <../src/Hash.h>
#endif
#endif
class AsyncEventSource;
class AsyncEventSourceResponse;
class AsyncEventSourceClient;
using ArEventHandlerFunction = std::function<void(AsyncEventSourceClient *client)>;
using ArAuthorizeConnectHandler = ArAuthorizeFunction;
// shared message object container
using AsyncEvent_SharedData_t = std::shared_ptr<String>;
/**
* @brief Async Event Message container with shared message content data
*
*/
class AsyncEventSourceMessage {
private:
const AsyncEvent_SharedData_t _data;
size_t _sent{0}; // num of bytes already sent
size_t _acked{0}; // num of bytes acked
public:
AsyncEventSourceMessage(AsyncEvent_SharedData_t data) : _data(data){};
#if defined(ESP32)
AsyncEventSourceMessage(const char *data, size_t len) : _data(std::make_shared<String>(data, len)){};
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
AsyncEventSourceMessage(const char *data, size_t len) : _data(std::make_shared<String>()) {
if (data && len > 0) {
_data->concat(data, len);
}
};
#else
// esp8266's String does not have constructor with data/length arguments. Use a concat method here
AsyncEventSourceMessage(const char *data, size_t len) {
_data->concat(data, len);
};
#endif
/**
* @brief acknowledge sending len bytes of data
* @note if num of bytes to ack is larger then the unacknowledged message length the number of carried over bytes are returned
*
* @param len bytes to acknowledge
* @param time
* @return size_t number of extra bytes carried over
*/
size_t ack(size_t len, uint32_t time = 0);
/**
* @brief write message data to client's buffer
* @note this method does NOT call client's send
*
* @param client
* @return size_t number of bytes written
*/
size_t write(AsyncClient *client);
/**
* @brief writes message data to client's buffer and calls client's send method
*
* @param client
* @return size_t returns num of bytes the clien was able to send()
*/
size_t send(AsyncClient *client);
// returns true if full message's length were acked
bool finished() {
return _acked == _data->length();
}
/**
* @brief returns true if all data has been sent already
*
*/
bool sent() {
return _sent == _data->length();
}
};
/**
* @brief class holds a sse messages queue for a particular client's connection
*
*/
class AsyncEventSourceClient {
private:
AsyncClient *_client;
AsyncEventSource *_server;
uint32_t _lastId{0};
size_t _inflight{0}; // num of unacknowledged bytes that has been written to socket buffer
size_t _max_inflight{SSE_MAX_INFLIGH}; // max num of unacknowledged bytes that could be written to socket buffer
std::list<AsyncEventSourceMessage> _messageQueue;
#ifdef ESP32
mutable std::recursive_mutex _lockmq;
#endif
bool _queueMessage(const char *message, size_t len);
bool _queueMessage(AsyncEvent_SharedData_t &&msg);
void _runQueue();
public:
AsyncEventSourceClient(AsyncWebServerRequest *request, AsyncEventSource *server);
~AsyncEventSourceClient();
/**
* @brief Send an SSE message to client
* it will craft an SSE message and place it to client's message queue
*
* @param message body string, could be single or multi-line string sepprated by \n, \r, \r\n
* @param event body string, a sinle line string
* @param id sequence id
* @param reconnect client's reconnect timeout
* @return true if message was placed in a queue
* @return false if queue is full
*/
bool send(const char *message, const char *event = NULL, uint32_t id = 0, uint32_t reconnect = 0);
bool send(const String &message, const String &event, uint32_t id = 0, uint32_t reconnect = 0) {
return send(message.c_str(), event.c_str(), id, reconnect);
}
bool send(const String &message, const char *event, uint32_t id = 0, uint32_t reconnect = 0) {
return send(message.c_str(), event, id, reconnect);
}
/**
* @brief place supplied preformatted SSE message to the message queue
* @note message must a properly formatted SSE string according to https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events
*
* @param message data
* @return true on success
* @return false on queue overflow or no client connected
*/
bool write(AsyncEvent_SharedData_t message) {
return connected() && _queueMessage(std::move(message));
};
[[deprecated("Use _write(AsyncEvent_SharedData_t message) instead to share same data with multiple SSE clients")]]
bool write(const char *message, size_t len) {
return connected() && _queueMessage(message, len);
};
// close client's connection
void close();
// getters
AsyncClient *client() {
return _client;
}
bool connected() const {
return _client && _client->connected();
}
uint32_t lastId() const {
return _lastId;
}
size_t packetsWaiting() const {
return _messageQueue.size();
};
/**
* @brief Sets max amount of bytes that could be written to client's socket while awaiting delivery acknowledge
* used to throttle message delivery length to tradeoff memory consumption
* @note actual amount of data written could possible be a bit larger but no more than available socket buff space
*
* @param value
*/
void set_max_inflight_bytes(size_t value);
/**
* @brief Get current max inflight bytes value
*
* @return size_t
*/
size_t get_max_inflight_bytes() const {
return _max_inflight;
}
// system callbacks (do not call if from user code!)
void _onAck(size_t len, uint32_t time);
void _onPoll();
void _onTimeout(uint32_t time);
void _onDisconnect();
};
/**
* @brief a class that maintains all connected HTTP clients subscribed to SSE delivery
* dispatches supplied messages to the client's queues
*
*/
class AsyncEventSource : public AsyncWebHandler {
private:
String _url;
std::list<std::unique_ptr<AsyncEventSourceClient>> _clients;
#ifdef ESP32
// Same as for individual messages, protect mutations of _clients list
// since simultaneous access from different tasks is possible
mutable std::recursive_mutex _client_queue_lock;
#endif
ArEventHandlerFunction _connectcb = nullptr;
ArEventHandlerFunction _disconnectcb = nullptr;
// this method manipulates in-fligh data size for connected client depending on number of active connections
void _adjust_inflight_window();
public:
typedef enum {
DISCARDED = 0,
ENQUEUED = 1,
PARTIALLY_ENQUEUED = 2,
} SendStatus;
AsyncEventSource(const char *url) : _url(url){};
AsyncEventSource(const String &url) : _url(url){};
~AsyncEventSource() {
close();
};
const char *url() const {
return _url.c_str();
}
// close all connected clients
void close();
/**
* @brief set on-connect callback for the client
* used to deliver messages to client on first connect
*
* @param cb
*/
void onConnect(ArEventHandlerFunction cb) {
_connectcb = cb;
}
/**
* @brief Send an SSE message to client
* it will craft an SSE message and place it to all connected client's message queues
*
* @param message body string, could be single or multi-line string sepprated by \n, \r, \r\n
* @param event body string, a sinle line string
* @param id sequence id
* @param reconnect client's reconnect timeout
* @return SendStatus if message was placed in any/all/part of the client's queues
*/
SendStatus send(const char *message, const char *event = NULL, uint32_t id = 0, uint32_t reconnect = 0);
SendStatus send(const String &message, const String &event, uint32_t id = 0, uint32_t reconnect = 0) {
return send(message.c_str(), event.c_str(), id, reconnect);
}
SendStatus send(const String &message, const char *event, uint32_t id = 0, uint32_t reconnect = 0) {
return send(message.c_str(), event, id, reconnect);
}
// The client pointer sent to the callback is only for reference purposes. DO NOT CALL ANY METHOD ON IT !
void onDisconnect(ArEventHandlerFunction cb) {
_disconnectcb = cb;
}
void authorizeConnect(ArAuthorizeConnectHandler cb);
// returns number of connected clients
size_t count() const;
// returns average number of messages pending in all client's queues
size_t avgPacketsWaiting() const;
// system callbacks (do not call from user code!)
void _addClient(AsyncEventSourceClient *client);
void _handleDisconnect(AsyncEventSourceClient *client);
bool canHandle(AsyncWebServerRequest *request) const override final;
void handleRequest(AsyncWebServerRequest *request) override final;
};
class AsyncEventSourceResponse : public AsyncWebServerResponse {
private:
AsyncEventSource *_server;
public:
AsyncEventSourceResponse(AsyncEventSource *server);
void _respond(AsyncWebServerRequest *request);
size_t _ack(AsyncWebServerRequest *request, size_t len, uint32_t time);
bool _sourceValid() const {
return true;
}
};
#endif /* ASYNCEVENTSOURCE_H_ */

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#include "AsyncJson.h"
#include "AsyncWebServerLogging.h"
#if ASYNC_JSON_SUPPORT == 1
#if ARDUINOJSON_VERSION_MAJOR == 5
AsyncJsonResponse::AsyncJsonResponse(bool isArray) : _isValid{false} {
_code = 200;
_contentType = asyncsrv::T_application_json;
if (isArray) {
_root = _jsonBuffer.createArray();
} else {
_root = _jsonBuffer.createObject();
}
}
#elif ARDUINOJSON_VERSION_MAJOR == 6
AsyncJsonResponse::AsyncJsonResponse(bool isArray, size_t maxJsonBufferSize) : _jsonBuffer(maxJsonBufferSize), _isValid{false} {
_code = 200;
_contentType = asyncsrv::T_application_json;
if (isArray) {
_root = _jsonBuffer.createNestedArray();
} else {
_root = _jsonBuffer.createNestedObject();
}
}
#else
AsyncJsonResponse::AsyncJsonResponse(bool isArray) : _isValid{false} {
_code = 200;
_contentType = asyncsrv::T_application_json;
if (isArray) {
_root = _jsonBuffer.add<JsonArray>();
} else {
_root = _jsonBuffer.add<JsonObject>();
}
}
#endif
size_t AsyncJsonResponse::setLength() {
#if ARDUINOJSON_VERSION_MAJOR == 5
_contentLength = _root.measureLength();
#else
_contentLength = measureJson(_root);
#endif
if (_contentLength) {
_isValid = true;
}
return _contentLength;
}
size_t AsyncJsonResponse::_fillBuffer(uint8_t *data, size_t len) {
ChunkPrint dest(data, _sentLength, len);
#if ARDUINOJSON_VERSION_MAJOR == 5
_root.printTo(dest);
#else
serializeJson(_root, dest);
#endif
return len;
}
#if ARDUINOJSON_VERSION_MAJOR == 6
PrettyAsyncJsonResponse::PrettyAsyncJsonResponse(bool isArray, size_t maxJsonBufferSize) : AsyncJsonResponse{isArray, maxJsonBufferSize} {}
#else
PrettyAsyncJsonResponse::PrettyAsyncJsonResponse(bool isArray) : AsyncJsonResponse{isArray} {}
#endif
size_t PrettyAsyncJsonResponse::setLength() {
#if ARDUINOJSON_VERSION_MAJOR == 5
_contentLength = _root.measurePrettyLength();
#else
_contentLength = measureJsonPretty(_root);
#endif
if (_contentLength) {
_isValid = true;
}
return _contentLength;
}
size_t PrettyAsyncJsonResponse::_fillBuffer(uint8_t *data, size_t len) {
ChunkPrint dest(data, _sentLength, len);
#if ARDUINOJSON_VERSION_MAJOR == 5
_root.prettyPrintTo(dest);
#else
serializeJsonPretty(_root, dest);
#endif
return len;
}
#if ARDUINOJSON_VERSION_MAJOR == 6
AsyncCallbackJsonWebHandler::AsyncCallbackJsonWebHandler(const String &uri, ArJsonRequestHandlerFunction onRequest, size_t maxJsonBufferSize)
: _uri(uri), _method(HTTP_GET | HTTP_POST | HTTP_PUT | HTTP_PATCH), _onRequest(onRequest), maxJsonBufferSize(maxJsonBufferSize), _maxContentLength(16384) {}
#else
AsyncCallbackJsonWebHandler::AsyncCallbackJsonWebHandler(const String &uri, ArJsonRequestHandlerFunction onRequest)
: _uri(uri), _method(HTTP_GET | HTTP_POST | HTTP_PUT | HTTP_PATCH), _onRequest(onRequest), _maxContentLength(16384) {}
#endif
bool AsyncCallbackJsonWebHandler::canHandle(AsyncWebServerRequest *request) const {
if (!_onRequest || !request->isHTTP() || !(_method & request->method())) {
return false;
}
if (_uri.length() && (_uri != request->url() && !request->url().startsWith(_uri + "/"))) {
return false;
}
if (request->method() != HTTP_GET && !request->contentType().equalsIgnoreCase(asyncsrv::T_application_json)) {
return false;
}
return true;
}
void AsyncCallbackJsonWebHandler::handleRequest(AsyncWebServerRequest *request) {
if (_onRequest) {
// GET request:
if (request->method() == HTTP_GET) {
JsonVariant json;
_onRequest(request, json);
return;
}
// POST / PUT / ... requests:
// check if JSON body is too large, if it is, don't deserialize
if (request->contentLength() > _maxContentLength) {
async_ws_log_e("Content length exceeds maximum allowed");
request->send(413);
return;
}
if (request->_tempObject == NULL) {
// there is no body
request->send(400);
return;
}
#if ARDUINOJSON_VERSION_MAJOR == 5
DynamicJsonBuffer jsonBuffer;
JsonVariant json = jsonBuffer.parse((const char *)request->_tempObject);
if (json.success()) {
#elif ARDUINOJSON_VERSION_MAJOR == 6
DynamicJsonDocument jsonBuffer(this->maxJsonBufferSize);
DeserializationError error = deserializeJson(jsonBuffer, (const char *)request->_tempObject);
if (!error) {
JsonVariant json = jsonBuffer.as<JsonVariant>();
#else
JsonDocument jsonBuffer;
DeserializationError error = deserializeJson(jsonBuffer, (const char *)request->_tempObject);
if (!error) {
JsonVariant json = jsonBuffer.as<JsonVariant>();
#endif
_onRequest(request, json);
} else {
// error parsing the body
request->send(400);
}
}
}
void AsyncCallbackJsonWebHandler::handleBody(AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total) {
if (_onRequest) {
// ignore callback if size is larger than maxContentLength
if (total > _maxContentLength) {
return;
}
if (index == 0) {
// this check allows request->_tempObject to be initialized from a middleware
if (request->_tempObject == NULL) {
request->_tempObject = calloc(total + 1, sizeof(uint8_t)); // null-terminated string
if (request->_tempObject == NULL) {
async_ws_log_e("Failed to allocate");
request->abort();
return;
}
}
}
if (request->_tempObject != NULL) {
uint8_t *buffer = (uint8_t *)request->_tempObject;
memcpy(buffer + index, data, len);
}
}
}
#endif // ASYNC_JSON_SUPPORT

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#ifndef ASYNC_JSON_H_
#define ASYNC_JSON_H_
#if __has_include("ArduinoJson.h")
#include <ArduinoJson.h>
#if ARDUINOJSON_VERSION_MAJOR >= 5
#define ASYNC_JSON_SUPPORT 1
#else
#define ASYNC_JSON_SUPPORT 0
#endif // ARDUINOJSON_VERSION_MAJOR >= 5
#endif // __has_include("ArduinoJson.h")
#if ASYNC_JSON_SUPPORT == 1
#include <ESPAsyncWebServer.h>
#include "ChunkPrint.h"
#if ARDUINOJSON_VERSION_MAJOR == 6
#ifndef DYNAMIC_JSON_DOCUMENT_SIZE
#define DYNAMIC_JSON_DOCUMENT_SIZE 1024
#endif
#endif
class AsyncJsonResponse : public AsyncAbstractResponse {
protected:
#if ARDUINOJSON_VERSION_MAJOR == 5
DynamicJsonBuffer _jsonBuffer;
#elif ARDUINOJSON_VERSION_MAJOR == 6
DynamicJsonDocument _jsonBuffer;
#else
JsonDocument _jsonBuffer;
#endif
JsonVariant _root;
bool _isValid;
public:
#if ARDUINOJSON_VERSION_MAJOR == 6
AsyncJsonResponse(bool isArray = false, size_t maxJsonBufferSize = DYNAMIC_JSON_DOCUMENT_SIZE);
#else
AsyncJsonResponse(bool isArray = false);
#endif
JsonVariant &getRoot() {
return _root;
}
bool _sourceValid() const {
return _isValid;
}
size_t setLength();
size_t getSize() const {
return _jsonBuffer.size();
}
size_t _fillBuffer(uint8_t *data, size_t len);
#if ARDUINOJSON_VERSION_MAJOR >= 6
bool overflowed() const {
return _jsonBuffer.overflowed();
}
#endif
};
class PrettyAsyncJsonResponse : public AsyncJsonResponse {
public:
#if ARDUINOJSON_VERSION_MAJOR == 6
PrettyAsyncJsonResponse(bool isArray = false, size_t maxJsonBufferSize = DYNAMIC_JSON_DOCUMENT_SIZE);
#else
PrettyAsyncJsonResponse(bool isArray = false);
#endif
size_t setLength();
size_t _fillBuffer(uint8_t *data, size_t len);
};
typedef std::function<void(AsyncWebServerRequest *request, JsonVariant &json)> ArJsonRequestHandlerFunction;
class AsyncCallbackJsonWebHandler : public AsyncWebHandler {
protected:
String _uri;
WebRequestMethodComposite _method;
ArJsonRequestHandlerFunction _onRequest;
#if ARDUINOJSON_VERSION_MAJOR == 6
size_t maxJsonBufferSize;
#endif
size_t _maxContentLength;
public:
#if ARDUINOJSON_VERSION_MAJOR == 6
AsyncCallbackJsonWebHandler(const String &uri, ArJsonRequestHandlerFunction onRequest = nullptr, size_t maxJsonBufferSize = DYNAMIC_JSON_DOCUMENT_SIZE);
#else
AsyncCallbackJsonWebHandler(const String &uri, ArJsonRequestHandlerFunction onRequest = nullptr);
#endif
void setMethod(WebRequestMethodComposite method) {
_method = method;
}
void setMaxContentLength(int maxContentLength) {
_maxContentLength = maxContentLength;
}
void onRequest(ArJsonRequestHandlerFunction fn) {
_onRequest = fn;
}
bool canHandle(AsyncWebServerRequest *request) const override final;
void handleRequest(AsyncWebServerRequest *request) override final;
void handleUpload(
__unused AsyncWebServerRequest *request, __unused const String &filename, __unused size_t index, __unused uint8_t *data, __unused size_t len,
__unused bool final
) override final {}
void handleBody(AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total) override final;
bool isRequestHandlerTrivial() const override final {
return !_onRequest;
}
};
#endif // ASYNC_JSON_SUPPORT == 1
#endif // ASYNC_JSON_H_

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#include "AsyncMessagePack.h"
#include "AsyncWebServerLogging.h"
#if ASYNC_MSG_PACK_SUPPORT == 1
#if ARDUINOJSON_VERSION_MAJOR == 6
AsyncMessagePackResponse::AsyncMessagePackResponse(bool isArray, size_t maxJsonBufferSize) : _jsonBuffer(maxJsonBufferSize), _isValid{false} {
_code = 200;
_contentType = asyncsrv::T_application_msgpack;
if (isArray) {
_root = _jsonBuffer.createNestedArray();
} else {
_root = _jsonBuffer.createNestedObject();
}
}
#else
AsyncMessagePackResponse::AsyncMessagePackResponse(bool isArray) : _isValid{false} {
_code = 200;
_contentType = asyncsrv::T_application_msgpack;
if (isArray) {
_root = _jsonBuffer.add<JsonArray>();
} else {
_root = _jsonBuffer.add<JsonObject>();
}
}
#endif
size_t AsyncMessagePackResponse::setLength() {
_contentLength = measureMsgPack(_root);
if (_contentLength) {
_isValid = true;
}
return _contentLength;
}
size_t AsyncMessagePackResponse::_fillBuffer(uint8_t *data, size_t len) {
ChunkPrint dest(data, _sentLength, len);
serializeMsgPack(_root, dest);
return len;
}
#if ARDUINOJSON_VERSION_MAJOR == 6
AsyncCallbackMessagePackWebHandler::AsyncCallbackMessagePackWebHandler(
const String &uri, ArMessagePackRequestHandlerFunction onRequest, size_t maxJsonBufferSize
)
: _uri(uri), _method(HTTP_GET | HTTP_POST | HTTP_PUT | HTTP_PATCH), _onRequest(onRequest), maxJsonBufferSize(maxJsonBufferSize), _maxContentLength(16384) {}
#else
AsyncCallbackMessagePackWebHandler::AsyncCallbackMessagePackWebHandler(const String &uri, ArMessagePackRequestHandlerFunction onRequest)
: _uri(uri), _method(HTTP_GET | HTTP_POST | HTTP_PUT | HTTP_PATCH), _onRequest(onRequest), _maxContentLength(16384) {}
#endif
bool AsyncCallbackMessagePackWebHandler::canHandle(AsyncWebServerRequest *request) const {
if (!_onRequest || !request->isHTTP() || !(_method & request->method())) {
return false;
}
if (_uri.length() && (_uri != request->url() && !request->url().startsWith(_uri + "/"))) {
return false;
}
if (request->method() != HTTP_GET && !request->contentType().equalsIgnoreCase(asyncsrv::T_application_msgpack)) {
return false;
}
return true;
}
void AsyncCallbackMessagePackWebHandler::handleRequest(AsyncWebServerRequest *request) {
if (_onRequest) {
if (request->method() == HTTP_GET) {
JsonVariant json;
_onRequest(request, json);
return;
} else if (request->_tempObject != NULL) {
#if ARDUINOJSON_VERSION_MAJOR == 6
DynamicJsonDocument jsonBuffer(this->maxJsonBufferSize);
DeserializationError error = deserializeMsgPack(jsonBuffer, (uint8_t *)(request->_tempObject));
if (!error) {
JsonVariant json = jsonBuffer.as<JsonVariant>();
#else
JsonDocument jsonBuffer;
DeserializationError error = deserializeMsgPack(jsonBuffer, (uint8_t *)(request->_tempObject));
if (!error) {
JsonVariant json = jsonBuffer.as<JsonVariant>();
#endif
_onRequest(request, json);
return;
}
}
request->send(_contentLength > _maxContentLength ? 413 : 400);
} else {
request->send(500);
}
}
void AsyncCallbackMessagePackWebHandler::handleBody(AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total) {
if (_onRequest) {
_contentLength = total;
if (total > 0 && request->_tempObject == NULL && total < _maxContentLength) {
request->_tempObject = malloc(total);
if (request->_tempObject == NULL) {
async_ws_log_e("Failed to allocate");
request->abort();
return;
}
}
if (request->_tempObject != NULL) {
memcpy((uint8_t *)(request->_tempObject) + index, data, len);
}
}
}
#endif // ASYNC_MSG_PACK_SUPPORT

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#pragma once
/*
server.on("/msg_pack", HTTP_ANY, [](AsyncWebServerRequest * request) {
AsyncMessagePackResponse * response = new AsyncMessagePackResponse();
JsonObject& root = response->getRoot();
root["key1"] = "key number one";
JsonObject& nested = root.createNestedObject("nested");
nested["key1"] = "key number one";
response->setLength();
request->send(response);
});
--------------------
AsyncCallbackMessagePackWebHandler* handler = new AsyncCallbackMessagePackWebHandler("/msg_pack/endpoint");
handler->onRequest([](AsyncWebServerRequest *request, JsonVariant &json) {
JsonObject jsonObj = json.as<JsonObject>();
// ...
});
server.addHandler(handler);
*/
#if __has_include("ArduinoJson.h")
#include <ArduinoJson.h>
#if ARDUINOJSON_VERSION_MAJOR >= 6
#define ASYNC_MSG_PACK_SUPPORT 1
#else
#define ASYNC_MSG_PACK_SUPPORT 0
#endif // ARDUINOJSON_VERSION_MAJOR >= 6
#endif // __has_include("ArduinoJson.h")
#if ASYNC_MSG_PACK_SUPPORT == 1
#include <ESPAsyncWebServer.h>
#include "ChunkPrint.h"
#if ARDUINOJSON_VERSION_MAJOR == 6
#ifndef DYNAMIC_JSON_DOCUMENT_SIZE
#define DYNAMIC_JSON_DOCUMENT_SIZE 1024
#endif
#endif
class AsyncMessagePackResponse : public AsyncAbstractResponse {
protected:
#if ARDUINOJSON_VERSION_MAJOR == 6
DynamicJsonDocument _jsonBuffer;
#else
JsonDocument _jsonBuffer;
#endif
JsonVariant _root;
bool _isValid;
public:
#if ARDUINOJSON_VERSION_MAJOR == 6
AsyncMessagePackResponse(bool isArray = false, size_t maxJsonBufferSize = DYNAMIC_JSON_DOCUMENT_SIZE);
#else
AsyncMessagePackResponse(bool isArray = false);
#endif
JsonVariant &getRoot() {
return _root;
}
bool _sourceValid() const {
return _isValid;
}
size_t setLength();
size_t getSize() const {
return _jsonBuffer.size();
}
size_t _fillBuffer(uint8_t *data, size_t len);
#if ARDUINOJSON_VERSION_MAJOR >= 6
bool overflowed() const {
return _jsonBuffer.overflowed();
}
#endif
};
typedef std::function<void(AsyncWebServerRequest *request, JsonVariant &json)> ArMessagePackRequestHandlerFunction;
class AsyncCallbackMessagePackWebHandler : public AsyncWebHandler {
protected:
String _uri;
WebRequestMethodComposite _method;
ArMessagePackRequestHandlerFunction _onRequest;
size_t _contentLength;
#if ARDUINOJSON_VERSION_MAJOR == 6
size_t maxJsonBufferSize;
#endif
size_t _maxContentLength;
public:
#if ARDUINOJSON_VERSION_MAJOR == 6
AsyncCallbackMessagePackWebHandler(
const String &uri, ArMessagePackRequestHandlerFunction onRequest = nullptr, size_t maxJsonBufferSize = DYNAMIC_JSON_DOCUMENT_SIZE
);
#else
AsyncCallbackMessagePackWebHandler(const String &uri, ArMessagePackRequestHandlerFunction onRequest = nullptr);
#endif
void setMethod(WebRequestMethodComposite method) {
_method = method;
}
void setMaxContentLength(int maxContentLength) {
_maxContentLength = maxContentLength;
}
void onRequest(ArMessagePackRequestHandlerFunction fn) {
_onRequest = fn;
}
bool canHandle(AsyncWebServerRequest *request) const override final;
void handleRequest(AsyncWebServerRequest *request) override final;
void handleUpload(
__unused AsyncWebServerRequest *request, __unused const String &filename, __unused size_t index, __unused uint8_t *data, __unused size_t len,
__unused bool final
) override final {}
void handleBody(AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total) override final;
bool isRequestHandlerTrivial() const override final {
return !_onRequest;
}
};
#endif // ASYNC_MSG_PACK_SUPPORT == 1

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#include <ESPAsyncWebServer.h>
const AsyncWebHeader AsyncWebHeader::parse(const char *data) {
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers
// In HTTP/1.X, a header is a case-insensitive name followed by a colon, then optional whitespace which will be ignored, and finally by its value
if (!data) {
return AsyncWebHeader(); // nullptr
}
if (data[0] == '\0') {
return AsyncWebHeader(); // empty string
}
if (strchr(data, '\n') || strchr(data, '\r')) {
return AsyncWebHeader(); // Invalid header format
}
const char *colon = strchr(data, ':');
if (!colon) {
return AsyncWebHeader(); // separator not found
}
if (colon == data) {
return AsyncWebHeader(); // Header name cannot be empty
}
const char *startOfValue = colon + 1; // Skip the colon
// skip one optional whitespace after the colon
if (*startOfValue == ' ') {
startOfValue++;
}
String name;
name.reserve(colon - data);
name.concat(data, colon - data);
return AsyncWebHeader(name, String(startOfValue));
}

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#pragma once
#ifdef ASYNCWEBSERVER_LOG_CUSTOM
// The user must provide the following macros in AsyncWebServerLoggingCustom.h:
// async_ws_log_e, async_ws_log_w, async_ws_log_i, async_ws_log_d, async_ws_log_v
#include <AsyncWebServerLoggingCustom.h>
#elif defined(ASYNCWEBSERVER_LOG_DEBUG)
// Local Debug logging
#include <HardwareSerial.h>
#define async_ws_log_e(format, ...) Serial.printf("E async_ws %s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__);
#define async_ws_log_w(format, ...) Serial.printf("W async_ws %s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__);
#define async_ws_log_i(format, ...) Serial.printf("I async_ws %s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__);
#define async_ws_log_d(format, ...) Serial.printf("D async_ws %s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__);
#define async_ws_log_v(format, ...) Serial.printf("V async_ws %s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
// Framework-based logging
/**
* LibreTiny specific configurations
*/
#if defined(LIBRETINY)
#include <Arduino.h>
#define async_ws_log_e(format, ...) log_e(format, ##__VA_ARGS__)
#define async_ws_log_w(format, ...) log_w(format, ##__VA_ARGS__)
#define async_ws_log_i(format, ...) log_i(format, ##__VA_ARGS__)
#define async_ws_log_d(format, ...) log_d(format, ##__VA_ARGS__)
#define async_ws_log_v(format, ...) log_v(format, ##__VA_ARGS__)
/**
* Raspberry Pi Pico specific configurations
*/
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <HardwareSerial.h>
// define log levels
#define ASYNC_WS_LOG_NONE 0 /*!< No log output */
#define ASYNC_WS_LOG_ERROR 1 /*!< Critical errors, software module can not recover on its own */
#define ASYNC_WS_LOG_WARN 2 /*!< Error conditions from which recovery measures have been taken */
#define ASYNC_WS_LOG_INFO 3 /*!< Information messages which describe normal flow of events */
#define ASYNC_WS_LOG_DEBUG 4 /*!< Extra information which is not necessary for normal use (values, pointers, sizes, etc). */
#define ASYNC_WS_LOG_VERBOSE 5 /*!< Verbose information for debugging purposes */
#define ASYNC_WS_LOG_MAX 6 /*!< Number of levels supported */
// set default log level
#ifndef ASYNCWEBSERVER_LOG_LEVEL
#define ASYNCWEBSERVER_LOG_LEVEL ASYNC_WS_LOG_INFO
#endif
// error
#if ASYNCWEBSERVER_LOG_LEVEL >= ASYNC_WS_LOG_ERROR
#define async_ws_log_e(format, ...) Serial.printf("E async_ws %s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
#define async_ws_log_e(format, ...)
#endif
// warn
#if ASYNCWEBSERVER_LOG_LEVEL >= ASYNC_WS_LOG_WARN
#define async_ws_log_w(format, ...) Serial.printf("W async_ws %s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
#define async_ws_log_w(format, ...)
#endif
// info
#if ASYNCWEBSERVER_LOG_LEVEL >= ASYNC_WS_LOG_INFO
#define async_ws_log_i(format, ...) Serial.printf("I async_ws %s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
#define async_ws_log_i(format, ...)
#endif
// debug
#if ASYNCWEBSERVER_LOG_LEVEL >= ASYNC_WS_LOG_DEBUG
#define async_ws_log_d(format, ...) Serial.printf("D async_ws %s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
#define async_ws_log_d(format, ...)
#endif
// verbose
#if ASYNCWEBSERVER_LOG_LEVEL >= ASYNC_WS_LOG_VERBOSE
#define async_ws_log_v(format, ...) Serial.printf("V async_ws %s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
#define async_ws_log_v(format, ...)
#endif
/**
* ESP8266 specific configurations
*/
#elif defined(ESP8266)
#include <ets_sys.h>
// define log levels
#define ASYNC_WS_LOG_NONE 0 /*!< No log output */
#define ASYNC_WS_LOG_ERROR 1 /*!< Critical errors, software module can not recover on its own */
#define ASYNC_WS_LOG_WARN 2 /*!< Error conditions from which recovery measures have been taken */
#define ASYNC_WS_LOG_INFO 3 /*!< Information messages which describe normal flow of events */
#define ASYNC_WS_LOG_DEBUG 4 /*!< Extra information which is not necessary for normal use (values, pointers, sizes, etc). */
#define ASYNC_WS_LOG_VERBOSE 5 /*!< Verbose information for debugging purposes */
#define ASYNC_WS_LOG_MAX 6 /*!< Number of levels supported */
// set default log level
#ifndef ASYNCWEBSERVER_LOG_LEVEL
#define ASYNCWEBSERVER_LOG_LEVEL ASYNC_WS_LOG_INFO
#endif
// error
#if ASYNCWEBSERVER_LOG_LEVEL >= ASYNC_WS_LOG_ERROR
#define async_ws_log_e(format, ...) ets_printf(String(F("E async_ws %s() %d: " format)).c_str(), __FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
#define async_ws_log_e(format, ...)
#endif
// warn
#if ASYNCWEBSERVER_LOG_LEVEL >= ASYNC_WS_LOG_WARN
#define async_ws_log_w(format, ...) ets_printf(String(F("W async_ws %s() %d: " format)).c_str(), __FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
#define async_ws_log_w(format, ...)
#endif
// info
#if ASYNCWEBSERVER_LOG_LEVEL >= ASYNC_WS_LOG_INFO
#define async_ws_log_i(format, ...) ets_printf(String(F("I async_ws %s() %d: " format)).c_str(), __FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
#define async_ws_log_i(format, ...)
#endif
// debug
#if ASYNCWEBSERVER_LOG_LEVEL >= ASYNC_WS_LOG_DEBUG
#define async_ws_log_d(format, ...) ets_printf(String(F("D async_ws %s() %d: " format)).c_str(), __FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
#define async_ws_log_d(format, ...)
#endif
// verbose
#if ASYNCWEBSERVER_LOG_LEVEL >= ASYNC_WS_LOG_VERBOSE
#define async_ws_log_v(format, ...) ets_printf(String(F("V async_ws %s() %d: " format)).c_str(), __FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
#define async_ws_log_v(format, ...)
#endif
/**
* Arduino specific configurations
*/
#elif defined(ARDUINO)
#if defined(USE_ESP_IDF_LOG)
#include <esp_log.h>
#define async_ws_log_e(format, ...) ESP_LOGE("async_ws", "%s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#define async_ws_log_w(format, ...) ESP_LOGW("async_ws", "%s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#define async_ws_log_i(format, ...) ESP_LOGI("async_ws", "%s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#define async_ws_log_d(format, ...) ESP_LOGD("async_ws", "%s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#define async_ws_log_v(format, ...) ESP_LOGV("async_ws", "%s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#else
#include <esp32-hal-log.h>
#define async_ws_log_e(format, ...) log_e(format, ##__VA_ARGS__)
#define async_ws_log_w(format, ...) log_w(format, ##__VA_ARGS__)
#define async_ws_log_i(format, ...) log_i(format, ##__VA_ARGS__)
#define async_ws_log_d(format, ...) log_d(format, ##__VA_ARGS__)
#define async_ws_log_v(format, ...) log_v(format, ##__VA_ARGS__)
#endif // USE_ESP_IDF_LOG
/**
* ESP-IDF specific configurations
*/
#else
#include <esp_log.h>
#define async_ws_log_e(format, ...) ESP_LOGE("async_ws", "%s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#define async_ws_log_w(format, ...) ESP_LOGW("async_ws", "%s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#define async_ws_log_i(format, ...) ESP_LOGI("async_ws", "%s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#define async_ws_log_d(format, ...) ESP_LOGD("async_ws", "%s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#define async_ws_log_v(format, ...) ESP_LOGV("async_ws", "%s() %d: " format, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#endif // !LIBRETINY && !ARDUINO
#endif // ASYNCWEBSERVER_LOG_CUSTOM

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#include <ESPAsyncWebServer.h>
/**
* @brief Sends a file from the filesystem to the client, with optional gzip compression and ETag-based caching.
*
* This method serves files over HTTP from the provided filesystem. If a compressed version of the file
* (with a `.gz` extension) exists and uncompressed version does not exist, it serves the compressed file.
* It also handles ETag caching using the CRC32 value from the gzip trailer, responding with `304 Not Modified`
* if the client's `If-None-Match` header matches the generated ETag.
*
* @param fs Reference to the filesystem (SPIFFS, LittleFS, etc.).
* @param path Path to the file to be served.
* @param contentType Optional MIME type of the file to be sent.
* If contentType is "" it will be obtained from the file extension
* @param download If true, forces the file to be sent as a download.
* @param callback Optional template processor for dynamic content generation.
* Templates will not be processed in compressed files.
*
* @note If neither the file nor its compressed version exists, responds with `404 Not Found`.
*/
void AsyncWebServerRequest::send(FS &fs, const String &path, const char *contentType, bool download, AwsTemplateProcessor callback) {
// Check uncompressed file first
if (fs.exists(path)) {
send(beginResponse(fs, path, contentType, download, callback));
return;
}
// Handle compressed version
const String gzPath = path + asyncsrv::T__gz;
File gzFile = fs.open(gzPath, fs::FileOpenMode::read);
// ETag validation
if (this->hasHeader(asyncsrv::T_INM)) {
// Generate server ETag from CRC in gzip trailer
char serverETag[9];
if (!_getEtag(gzFile, serverETag)) {
// Compressed file not found or invalid
send(404);
gzFile.close();
return;
}
// Compare with client's ETag
const AsyncWebHeader *inmHeader = this->getHeader(asyncsrv::T_INM);
if (inmHeader && inmHeader->value() == serverETag) {
gzFile.close();
this->send(304); // Not Modified
return;
}
}
// Send compressed file response
gzFile.close();
send(beginResponse(fs, path, contentType, download, callback));
}
/**
* @brief Generates an ETag string from the CRC32 trailer of a GZIP file.
*
* This function reads the CRC32 checksum (4 bytes) located at the end of a GZIP-compressed file
* and converts it into an 8-character hexadecimal ETag string (null-terminated).
*
* @param gzFile Opened file handle pointing to the GZIP file.
* @param eTag Output buffer to store the generated ETag.
* Must be pre-allocated with at least 9 bytes (8 for hex digits + 1 for null terminator).
*
* @return true if the ETag was successfully generated, false otherwise (e.g., file too short or seek failed).
*/
bool AsyncWebServerRequest::_getEtag(File gzFile, char *etag) {
static constexpr char hexChars[] = "0123456789ABCDEF";
if (!gzFile.seek(gzFile.size() - 8)) {
return false;
}
uint32_t crc;
gzFile.read(reinterpret_cast<uint8_t *>(&crc), sizeof(crc));
etag[0] = hexChars[(crc >> 4) & 0x0F];
etag[1] = hexChars[crc & 0x0F];
etag[2] = hexChars[(crc >> 12) & 0x0F];
etag[3] = hexChars[(crc >> 8) & 0x0F];
etag[4] = hexChars[(crc >> 20) & 0x0F];
etag[5] = hexChars[(crc >> 16) & 0x0F];
etag[6] = hexChars[(crc >> 28)];
etag[7] = hexChars[(crc >> 24) & 0x0F];
etag[8] = '\0';
return true;
}

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
/** Major version number (X.x.x) */
#define ASYNCWEBSERVER_VERSION_MAJOR 3
/** Minor version number (x.X.x) */
#define ASYNCWEBSERVER_VERSION_MINOR 8
/** Patch version number (x.x.X) */
#define ASYNCWEBSERVER_VERSION_PATCH 1
/**
* Macro to convert version number into an integer
*
* To be used in comparisons, such as ASYNCWEBSERVER_VERSION >= ASYNCWEBSERVER_VERSION_VAL(2, 0, 0)
*/
#define ASYNCWEBSERVER_VERSION_VAL(major, minor, patch) ((major << 16) | (minor << 8) | (patch))
/**
* Current version, as an integer
*
* To be used in comparisons, such as ASYNCWEBSERVER_VERSION_NUM >= ASYNCWEBSERVER_VERSION_VAL(2, 0, 0)
*/
#define ASYNCWEBSERVER_VERSION_NUM ASYNCWEBSERVER_VERSION_VAL(ASYNCWEBSERVER_VERSION_MAJOR, ASYNCWEBSERVER_VERSION_MINOR, ASYNCWEBSERVER_VERSION_PATCH)
/**
* Current version, as string
*/
#define df2xstr(s) #s
#define df2str(s) df2xstr(s)
#define ASYNCWEBSERVER_VERSION df2str(ASYNCWEBSERVER_VERSION_MAJOR) "." df2str(ASYNCWEBSERVER_VERSION_MINOR) "." df2str(ASYNCWEBSERVER_VERSION_PATCH)
#ifdef __cplusplus
}
#endif

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#ifndef ASYNCWEBSOCKET_H_
#define ASYNCWEBSOCKET_H_
#include <Arduino.h>
#if defined(ESP32) || defined(LIBRETINY)
#include <AsyncTCP.h>
#ifdef LIBRETINY
#ifdef round
#undef round
#endif
#endif
#include <mutex>
#ifndef WS_MAX_QUEUED_MESSAGES
#define WS_MAX_QUEUED_MESSAGES 32
#endif
#elif defined(ESP8266)
#include <ESPAsyncTCP.h>
#ifndef WS_MAX_QUEUED_MESSAGES
#define WS_MAX_QUEUED_MESSAGES 8
#endif
#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <RPAsyncTCP.h>
#ifndef WS_MAX_QUEUED_MESSAGES
#define WS_MAX_QUEUED_MESSAGES 32
#endif
#endif
#include <ESPAsyncWebServer.h>
#include <AsyncWebServerLogging.h>
#include <memory>
#ifdef ESP8266
#include <Hash.h>
#ifdef CRYPTO_HASH_h // include Hash.h from espressif framework if the first include was from the crypto library
#include <../src/Hash.h>
#endif
#endif
#ifndef DEFAULT_MAX_WS_CLIENTS
#ifdef ESP32
#define DEFAULT_MAX_WS_CLIENTS 8
#else
#define DEFAULT_MAX_WS_CLIENTS 4
#endif
#endif
using AsyncWebSocketSharedBuffer = std::shared_ptr<std::vector<uint8_t>>;
class AsyncWebSocket;
class AsyncWebSocketResponse;
class AsyncWebSocketClient;
/*
* Control Frame
*/
class AsyncWebSocketControl {
private:
uint8_t _opcode;
uint8_t *_data;
size_t _len;
bool _mask;
bool _finished;
public:
AsyncWebSocketControl(uint8_t opcode, const uint8_t *data = NULL, size_t len = 0, bool mask = false)
: _opcode(opcode), _len(len), _mask(len && mask), _finished(false) {
if (data == NULL) {
_len = 0;
}
if (_len) {
if (_len > 125) {
_len = 125;
}
_data = (uint8_t *)malloc(_len);
if (_data == NULL) {
async_ws_log_e("Failed to allocate");
_len = 0;
} else {
memcpy(_data, data, len);
}
} else {
_data = NULL;
}
}
~AsyncWebSocketControl() {
if (_data != NULL) {
free(_data);
}
}
bool finished() const {
return _finished;
}
uint8_t opcode() {
return _opcode;
}
uint8_t len() {
return _len + 2;
}
size_t send(AsyncClient *client);
};
typedef struct {
/** Message type as defined by enum AwsFrameType.
* Note: Applications will only see WS_TEXT and WS_BINARY.
* All other types are handled by the library. */
uint8_t message_opcode;
/** Frame number of a fragmented message. */
uint32_t num;
/** Is this the last frame in a fragmented message ?*/
uint8_t final;
/** Is this frame masked? */
uint8_t masked;
/** Message type as defined by enum AwsFrameType.
* This value is the same as message_opcode for non-fragmented
* messages, but may also be WS_CONTINUATION in a fragmented message. */
uint8_t opcode;
/** Length of the current frame.
* This equals the total length of the message if num == 0 && final == true */
uint64_t len;
/** Mask key */
uint8_t mask[4];
/** Offset of the data inside the current frame. */
uint64_t index;
} AwsFrameInfo;
typedef enum {
WS_DISCONNECTED,
WS_CONNECTED,
WS_DISCONNECTING
} AwsClientStatus;
typedef enum {
WS_CONTINUATION,
WS_TEXT,
WS_BINARY,
WS_DISCONNECT = 0x08,
WS_PING,
WS_PONG
} AwsFrameType;
typedef enum {
WS_MSG_SENDING,
WS_MSG_SENT,
WS_MSG_ERROR
} AwsMessageStatus;
typedef enum {
WS_EVT_CONNECT,
WS_EVT_DISCONNECT,
WS_EVT_PING,
WS_EVT_PONG,
WS_EVT_ERROR,
WS_EVT_DATA
} AwsEventType;
class AsyncWebSocketMessageBuffer {
friend AsyncWebSocket;
friend AsyncWebSocketClient;
private:
AsyncWebSocketSharedBuffer _buffer;
public:
AsyncWebSocketMessageBuffer() {}
explicit AsyncWebSocketMessageBuffer(size_t size);
AsyncWebSocketMessageBuffer(const uint8_t *data, size_t size);
//~AsyncWebSocketMessageBuffer();
bool reserve(size_t size);
uint8_t *get() {
return _buffer->data();
}
size_t length() const {
return _buffer->size();
}
};
class AsyncWebSocketMessage {
private:
AsyncWebSocketSharedBuffer _WSbuffer;
uint8_t _opcode{WS_TEXT};
bool _mask{false};
AwsMessageStatus _status{WS_MSG_ERROR};
size_t _sent{};
size_t _ack{};
size_t _acked{};
public:
AsyncWebSocketMessage(AsyncWebSocketSharedBuffer buffer, uint8_t opcode = WS_TEXT, bool mask = false);
bool finished() const {
return _status != WS_MSG_SENDING;
}
bool betweenFrames() const {
return _acked == _ack;
}
void ack(size_t len, uint32_t time);
size_t send(AsyncClient *client);
};
class AsyncWebSocketClient {
private:
AsyncClient *_client;
AsyncWebSocket *_server;
uint32_t _clientId;
AwsClientStatus _status;
#ifdef ESP32
mutable std::recursive_mutex _lock;
#endif
std::deque<AsyncWebSocketControl> _controlQueue;
std::deque<AsyncWebSocketMessage> _messageQueue;
bool closeWhenFull = true;
uint8_t _pstate;
AwsFrameInfo _pinfo;
uint32_t _lastMessageTime;
uint32_t _keepAlivePeriod;
bool _queueControl(uint8_t opcode, const uint8_t *data = NULL, size_t len = 0, bool mask = false);
bool _queueMessage(AsyncWebSocketSharedBuffer buffer, uint8_t opcode = WS_TEXT, bool mask = false);
void _runQueue();
void _clearQueue();
public:
void *_tempObject;
AsyncWebSocketClient(AsyncWebServerRequest *request, AsyncWebSocket *server);
~AsyncWebSocketClient();
// client id increments for the given server
uint32_t id() const {
return _clientId;
}
AwsClientStatus status() const {
return _status;
}
AsyncClient *client() {
return _client;
}
const AsyncClient *client() const {
return _client;
}
AsyncWebSocket *server() {
return _server;
}
const AsyncWebSocket *server() const {
return _server;
}
AwsFrameInfo const &pinfo() const {
return _pinfo;
}
// - If "true" (default), the connection will be closed if the message queue is full.
// This is the default behavior in yubox-node-org, which is not silently discarding messages but instead closes the connection.
// The big issue with this behavior is that is can cause the UI to automatically re-create a new WS connection, which can be filled again,
// and so on, causing a resource exhaustion.
//
// - If "false", the incoming message will be discarded if the queue is full.
// This is the default behavior in the original ESPAsyncWebServer library from me-no-dev.
// This behavior allows the best performance at the expense of unreliable message delivery in case the queue is full (some messages may be lost).
//
// - In any case, when the queue is full, a message is logged.
// - IT is recommended to use the methods queueIsFull(), availableForWriteAll(), availableForWrite(clientId) to check if the queue is full before sending a message.
//
// Usage:
// - can be set in the onEvent listener when connecting (event type is: WS_EVT_CONNECT)
//
// Use cases:,
// - if using websocket to send logging messages, maybe some loss is acceptable.
// - But if using websocket to send UI update messages, maybe the connection should be closed and the UI redrawn.
void setCloseClientOnQueueFull(bool close) {
closeWhenFull = close;
}
bool willCloseClientOnQueueFull() const {
return closeWhenFull;
}
IPAddress remoteIP() const;
uint16_t remotePort() const;
bool shouldBeDeleted() const {
return !_client;
}
// control frames
void close(uint16_t code = 0, const char *message = NULL);
bool ping(const uint8_t *data = NULL, size_t len = 0);
// set auto-ping period in seconds. disabled if zero (default)
void keepAlivePeriod(uint16_t seconds) {
_keepAlivePeriod = seconds * 1000;
}
uint16_t keepAlivePeriod() {
return (uint16_t)(_keepAlivePeriod / 1000);
}
// data packets
void message(AsyncWebSocketSharedBuffer buffer, uint8_t opcode = WS_TEXT, bool mask = false) {
_queueMessage(buffer, opcode, mask);
}
bool queueIsFull() const;
size_t queueLen() const;
size_t printf(const char *format, ...) __attribute__((format(printf, 2, 3)));
bool text(AsyncWebSocketSharedBuffer buffer);
bool text(const uint8_t *message, size_t len);
bool text(const char *message, size_t len);
bool text(const char *message);
bool text(const String &message);
bool text(AsyncWebSocketMessageBuffer *buffer);
bool binary(AsyncWebSocketSharedBuffer buffer);
bool binary(const uint8_t *message, size_t len);
bool binary(const char *message, size_t len);
bool binary(const char *message);
bool binary(const String &message);
bool binary(AsyncWebSocketMessageBuffer *buffer);
bool canSend() const;
// system callbacks (do not call)
void _onAck(size_t len, uint32_t time);
void _onError(int8_t);
void _onPoll();
void _onTimeout(uint32_t time);
void _onDisconnect();
void _onData(void *pbuf, size_t plen);
#ifdef ESP8266
size_t printf_P(PGM_P formatP, ...) __attribute__((format(printf, 2, 3)));
bool text(const __FlashStringHelper *message);
bool binary(const __FlashStringHelper *message, size_t len);
#endif
};
using AwsHandshakeHandler = std::function<bool(AsyncWebServerRequest *request)>;
using AwsEventHandler = std::function<void(AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventType type, void *arg, uint8_t *data, size_t len)>;
// WebServer Handler implementation that plays the role of a socket server
class AsyncWebSocket : public AsyncWebHandler {
private:
String _url;
std::list<AsyncWebSocketClient> _clients;
uint32_t _cNextId;
AwsEventHandler _eventHandler;
AwsHandshakeHandler _handshakeHandler;
bool _enabled;
#ifdef ESP32
mutable std::mutex _lock;
#endif
public:
typedef enum {
DISCARDED = 0,
ENQUEUED = 1,
PARTIALLY_ENQUEUED = 2,
} SendStatus;
explicit AsyncWebSocket(const char *url, AwsEventHandler handler = nullptr) : _url(url), _cNextId(1), _eventHandler(handler), _enabled(true) {}
AsyncWebSocket(const String &url, AwsEventHandler handler = nullptr) : _url(url), _cNextId(1), _eventHandler(handler), _enabled(true) {}
~AsyncWebSocket(){};
const char *url() const {
return _url.c_str();
}
void enable(bool e) {
_enabled = e;
}
bool enabled() const {
return _enabled;
}
bool availableForWriteAll();
bool availableForWrite(uint32_t id);
size_t count() const;
AsyncWebSocketClient *client(uint32_t id);
bool hasClient(uint32_t id) {
return client(id) != nullptr;
}
void close(uint32_t id, uint16_t code = 0, const char *message = NULL);
void closeAll(uint16_t code = 0, const char *message = NULL);
void cleanupClients(uint16_t maxClients = DEFAULT_MAX_WS_CLIENTS);
bool ping(uint32_t id, const uint8_t *data = NULL, size_t len = 0);
SendStatus pingAll(const uint8_t *data = NULL, size_t len = 0); // done
bool text(uint32_t id, const uint8_t *message, size_t len);
bool text(uint32_t id, const char *message, size_t len);
bool text(uint32_t id, const char *message);
bool text(uint32_t id, const String &message);
bool text(uint32_t id, AsyncWebSocketMessageBuffer *buffer);
bool text(uint32_t id, AsyncWebSocketSharedBuffer buffer);
SendStatus textAll(const uint8_t *message, size_t len);
SendStatus textAll(const char *message, size_t len);
SendStatus textAll(const char *message);
SendStatus textAll(const String &message);
SendStatus textAll(AsyncWebSocketMessageBuffer *buffer);
SendStatus textAll(AsyncWebSocketSharedBuffer buffer);
bool binary(uint32_t id, const uint8_t *message, size_t len);
bool binary(uint32_t id, const char *message, size_t len);
bool binary(uint32_t id, const char *message);
bool binary(uint32_t id, const String &message);
bool binary(uint32_t id, AsyncWebSocketMessageBuffer *buffer);
bool binary(uint32_t id, AsyncWebSocketSharedBuffer buffer);
SendStatus binaryAll(const uint8_t *message, size_t len);
SendStatus binaryAll(const char *message, size_t len);
SendStatus binaryAll(const char *message);
SendStatus binaryAll(const String &message);
SendStatus binaryAll(AsyncWebSocketMessageBuffer *buffer);
SendStatus binaryAll(AsyncWebSocketSharedBuffer buffer);
size_t printf(uint32_t id, const char *format, ...) __attribute__((format(printf, 3, 4)));
size_t printfAll(const char *format, ...) __attribute__((format(printf, 2, 3)));
#ifdef ESP8266
bool text(uint32_t id, const __FlashStringHelper *message);
SendStatus textAll(const __FlashStringHelper *message);
bool binary(uint32_t id, const __FlashStringHelper *message, size_t len);
SendStatus binaryAll(const __FlashStringHelper *message, size_t len);
size_t printf_P(uint32_t id, PGM_P formatP, ...) __attribute__((format(printf, 3, 4)));
size_t printfAll_P(PGM_P formatP, ...) __attribute__((format(printf, 2, 3)));
#endif
void onEvent(AwsEventHandler handler) {
_eventHandler = handler;
}
void handleHandshake(AwsHandshakeHandler handler) {
_handshakeHandler = handler;
}
// system callbacks (do not call)
uint32_t _getNextId() {
return _cNextId++;
}
AsyncWebSocketClient *_newClient(AsyncWebServerRequest *request);
void _handleDisconnect(AsyncWebSocketClient *client);
void _handleEvent(AsyncWebSocketClient *client, AwsEventType type, void *arg, uint8_t *data, size_t len);
bool canHandle(AsyncWebServerRequest *request) const override final;
void handleRequest(AsyncWebServerRequest *request) override final;
// messagebuffer functions/objects.
AsyncWebSocketMessageBuffer *makeBuffer(size_t size = 0);
AsyncWebSocketMessageBuffer *makeBuffer(const uint8_t *data, size_t size);
std::list<AsyncWebSocketClient> &getClients() {
return _clients;
}
};
// WebServer response to authenticate the socket and detach the tcp client from the web server request
class AsyncWebSocketResponse : public AsyncWebServerResponse {
private:
String _content;
AsyncWebSocket *_server;
public:
AsyncWebSocketResponse(const String &key, AsyncWebSocket *server);
void _respond(AsyncWebServerRequest *request);
size_t _ack(AsyncWebServerRequest *request, size_t len, uint32_t time);
bool _sourceValid() const {
return true;
}
};
class AsyncWebSocketMessageHandler {
public:
AwsEventHandler eventHandler() const {
return _handler;
}
void onConnect(std::function<void(AsyncWebSocket *server, AsyncWebSocketClient *client)> onConnect) {
_onConnect = onConnect;
}
void onDisconnect(std::function<void(AsyncWebSocket *server, uint32_t clientId)> onDisconnect) {
_onDisconnect = onDisconnect;
}
/**
* Error callback
* @param reason null-terminated string
* @param len length of the string
*/
void onError(std::function<void(AsyncWebSocket *server, AsyncWebSocketClient *client, uint16_t errorCode, const char *reason, size_t len)> onError) {
_onError = onError;
}
/**
* Complete message callback
* @param data pointer to the data (binary or null-terminated string). This handler expects the user to know which data type he uses.
*/
void onMessage(std::function<void(AsyncWebSocket *server, AsyncWebSocketClient *client, const uint8_t *data, size_t len)> onMessage) {
_onMessage = onMessage;
}
/**
* Fragmented message callback
* @param data pointer to the data (binary or null-terminated string), will be null-terminated. This handler expects the user to know which data type he uses.
*/
// clang-format off
void onFragment(std::function<void(AsyncWebSocket *server, AsyncWebSocketClient *client, const AwsFrameInfo *frameInfo, const uint8_t *data, size_t len)> onFragment) {
_onFragment = onFragment;
}
// clang-format on
private:
// clang-format off
std::function<void(AsyncWebSocket *server, AsyncWebSocketClient *client)> _onConnect;
std::function<void(AsyncWebSocket *server, AsyncWebSocketClient *client, uint16_t errorCode, const char *reason, size_t len)> _onError;
std::function<void(AsyncWebSocket *server, AsyncWebSocketClient *client, const uint8_t *data, size_t len)> _onMessage;
std::function<void(AsyncWebSocket *server, AsyncWebSocketClient *client, const AwsFrameInfo *frameInfo, const uint8_t *data, size_t len)> _onFragment;
std::function<void(AsyncWebSocket *server, uint32_t clientId)> _onDisconnect;
// clang-format on
// this handler is meant to only support 1-frame messages (== unfragmented messages)
AwsEventHandler _handler = [this](AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventType type, void *arg, uint8_t *data, size_t len) {
if (type == WS_EVT_CONNECT) {
if (_onConnect) {
_onConnect(server, client);
}
} else if (type == WS_EVT_DISCONNECT) {
if (_onDisconnect) {
_onDisconnect(server, client->id());
}
} else if (type == WS_EVT_ERROR) {
if (_onError) {
_onError(server, client, *((uint16_t *)arg), (const char *)data, len);
}
} else if (type == WS_EVT_DATA) {
AwsFrameInfo *info = (AwsFrameInfo *)arg;
if (info->opcode == WS_TEXT) {
data[len] = 0;
}
if (info->final && info->index == 0 && info->len == len) {
if (_onMessage) {
_onMessage(server, client, data, len);
}
} else {
if (_onFragment) {
_onFragment(server, client, info, data, len);
}
}
}
};
};
#endif /* ASYNCWEBSOCKET_H_ */

284
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/*
* FIPS-180-1 compliant SHA-1 implementation
*
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file is part of mbed TLS (https://tls.mbed.org)
* Modified for esp32 by Lucas Saavedra Vaz on 11 Jan 2024
*/
#include <Arduino.h>
#if ESP_IDF_VERSION_MAJOR < 5
#include "BackPort_SHA1Builder.h"
// 32-bit integer manipulation macros (big endian)
#ifndef GET_UINT32_BE
#define GET_UINT32_BE(n, b, i) \
{ (n) = ((uint32_t)(b)[(i)] << 24) | ((uint32_t)(b)[(i) + 1] << 16) | ((uint32_t)(b)[(i) + 2] << 8) | ((uint32_t)(b)[(i) + 3]); }
#endif
#ifndef PUT_UINT32_BE
#define PUT_UINT32_BE(n, b, i) \
{ \
(b)[(i)] = (uint8_t)((n) >> 24); \
(b)[(i) + 1] = (uint8_t)((n) >> 16); \
(b)[(i) + 2] = (uint8_t)((n) >> 8); \
(b)[(i) + 3] = (uint8_t)((n)); \
}
#endif
// Constants
static const uint8_t sha1_padding[64] = {0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
// Private methods
void SHA1Builder::process(const uint8_t *data) {
uint32_t temp, W[16], A, B, C, D, E;
GET_UINT32_BE(W[0], data, 0);
GET_UINT32_BE(W[1], data, 4);
GET_UINT32_BE(W[2], data, 8);
GET_UINT32_BE(W[3], data, 12);
GET_UINT32_BE(W[4], data, 16);
GET_UINT32_BE(W[5], data, 20);
GET_UINT32_BE(W[6], data, 24);
GET_UINT32_BE(W[7], data, 28);
GET_UINT32_BE(W[8], data, 32);
GET_UINT32_BE(W[9], data, 36);
GET_UINT32_BE(W[10], data, 40);
GET_UINT32_BE(W[11], data, 44);
GET_UINT32_BE(W[12], data, 48);
GET_UINT32_BE(W[13], data, 52);
GET_UINT32_BE(W[14], data, 56);
GET_UINT32_BE(W[15], data, 60);
#define sha1_S(x, n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
#define sha1_R(t) (temp = W[(t - 3) & 0x0F] ^ W[(t - 8) & 0x0F] ^ W[(t - 14) & 0x0F] ^ W[t & 0x0F], (W[t & 0x0F] = sha1_S(temp, 1)))
#define sha1_P(a, b, c, d, e, x) \
{ \
e += sha1_S(a, 5) + sha1_F(b, c, d) + sha1_K + x; \
b = sha1_S(b, 30); \
}
A = state[0];
B = state[1];
C = state[2];
D = state[3];
E = state[4];
#define sha1_F(x, y, z) (z ^ (x & (y ^ z)))
#define sha1_K 0x5A827999
sha1_P(A, B, C, D, E, W[0]);
sha1_P(E, A, B, C, D, W[1]);
sha1_P(D, E, A, B, C, W[2]);
sha1_P(C, D, E, A, B, W[3]);
sha1_P(B, C, D, E, A, W[4]);
sha1_P(A, B, C, D, E, W[5]);
sha1_P(E, A, B, C, D, W[6]);
sha1_P(D, E, A, B, C, W[7]);
sha1_P(C, D, E, A, B, W[8]);
sha1_P(B, C, D, E, A, W[9]);
sha1_P(A, B, C, D, E, W[10]);
sha1_P(E, A, B, C, D, W[11]);
sha1_P(D, E, A, B, C, W[12]);
sha1_P(C, D, E, A, B, W[13]);
sha1_P(B, C, D, E, A, W[14]);
sha1_P(A, B, C, D, E, W[15]);
sha1_P(E, A, B, C, D, sha1_R(16));
sha1_P(D, E, A, B, C, sha1_R(17));
sha1_P(C, D, E, A, B, sha1_R(18));
sha1_P(B, C, D, E, A, sha1_R(19));
#undef sha1_K
#undef sha1_F
#define sha1_F(x, y, z) (x ^ y ^ z)
#define sha1_K 0x6ED9EBA1
sha1_P(A, B, C, D, E, sha1_R(20));
sha1_P(E, A, B, C, D, sha1_R(21));
sha1_P(D, E, A, B, C, sha1_R(22));
sha1_P(C, D, E, A, B, sha1_R(23));
sha1_P(B, C, D, E, A, sha1_R(24));
sha1_P(A, B, C, D, E, sha1_R(25));
sha1_P(E, A, B, C, D, sha1_R(26));
sha1_P(D, E, A, B, C, sha1_R(27));
sha1_P(C, D, E, A, B, sha1_R(28));
sha1_P(B, C, D, E, A, sha1_R(29));
sha1_P(A, B, C, D, E, sha1_R(30));
sha1_P(E, A, B, C, D, sha1_R(31));
sha1_P(D, E, A, B, C, sha1_R(32));
sha1_P(C, D, E, A, B, sha1_R(33));
sha1_P(B, C, D, E, A, sha1_R(34));
sha1_P(A, B, C, D, E, sha1_R(35));
sha1_P(E, A, B, C, D, sha1_R(36));
sha1_P(D, E, A, B, C, sha1_R(37));
sha1_P(C, D, E, A, B, sha1_R(38));
sha1_P(B, C, D, E, A, sha1_R(39));
#undef sha1_K
#undef sha1_F
#define sha1_F(x, y, z) ((x & y) | (z & (x | y)))
#define sha1_K 0x8F1BBCDC
sha1_P(A, B, C, D, E, sha1_R(40));
sha1_P(E, A, B, C, D, sha1_R(41));
sha1_P(D, E, A, B, C, sha1_R(42));
sha1_P(C, D, E, A, B, sha1_R(43));
sha1_P(B, C, D, E, A, sha1_R(44));
sha1_P(A, B, C, D, E, sha1_R(45));
sha1_P(E, A, B, C, D, sha1_R(46));
sha1_P(D, E, A, B, C, sha1_R(47));
sha1_P(C, D, E, A, B, sha1_R(48));
sha1_P(B, C, D, E, A, sha1_R(49));
sha1_P(A, B, C, D, E, sha1_R(50));
sha1_P(E, A, B, C, D, sha1_R(51));
sha1_P(D, E, A, B, C, sha1_R(52));
sha1_P(C, D, E, A, B, sha1_R(53));
sha1_P(B, C, D, E, A, sha1_R(54));
sha1_P(A, B, C, D, E, sha1_R(55));
sha1_P(E, A, B, C, D, sha1_R(56));
sha1_P(D, E, A, B, C, sha1_R(57));
sha1_P(C, D, E, A, B, sha1_R(58));
sha1_P(B, C, D, E, A, sha1_R(59));
#undef sha1_K
#undef sha1_F
#define sha1_F(x, y, z) (x ^ y ^ z)
#define sha1_K 0xCA62C1D6
sha1_P(A, B, C, D, E, sha1_R(60));
sha1_P(E, A, B, C, D, sha1_R(61));
sha1_P(D, E, A, B, C, sha1_R(62));
sha1_P(C, D, E, A, B, sha1_R(63));
sha1_P(B, C, D, E, A, sha1_R(64));
sha1_P(A, B, C, D, E, sha1_R(65));
sha1_P(E, A, B, C, D, sha1_R(66));
sha1_P(D, E, A, B, C, sha1_R(67));
sha1_P(C, D, E, A, B, sha1_R(68));
sha1_P(B, C, D, E, A, sha1_R(69));
sha1_P(A, B, C, D, E, sha1_R(70));
sha1_P(E, A, B, C, D, sha1_R(71));
sha1_P(D, E, A, B, C, sha1_R(72));
sha1_P(C, D, E, A, B, sha1_R(73));
sha1_P(B, C, D, E, A, sha1_R(74));
sha1_P(A, B, C, D, E, sha1_R(75));
sha1_P(E, A, B, C, D, sha1_R(76));
sha1_P(D, E, A, B, C, sha1_R(77));
sha1_P(C, D, E, A, B, sha1_R(78));
sha1_P(B, C, D, E, A, sha1_R(79));
#undef sha1_K
#undef sha1_F
state[0] += A;
state[1] += B;
state[2] += C;
state[3] += D;
state[4] += E;
}
// Public methods
void SHA1Builder::begin() {
total[0] = 0;
total[1] = 0;
state[0] = 0x67452301;
state[1] = 0xEFCDAB89;
state[2] = 0x98BADCFE;
state[3] = 0x10325476;
state[4] = 0xC3D2E1F0;
memset(buffer, 0x00, sizeof(buffer));
memset(hash, 0x00, sizeof(hash));
}
void SHA1Builder::add(const uint8_t *data, size_t len) {
size_t fill;
uint32_t left;
if (len == 0) {
return;
}
left = total[0] & 0x3F;
fill = 64 - left;
total[0] += (uint32_t)len;
total[0] &= 0xFFFFFFFF;
if (total[0] < (uint32_t)len) {
total[1]++;
}
if (left && len >= fill) {
memcpy((void *)(buffer + left), data, fill);
process(buffer);
data += fill;
len -= fill;
left = 0;
}
while (len >= 64) {
process(data);
data += 64;
len -= 64;
}
if (len > 0) {
memcpy((void *)(buffer + left), data, len);
}
}
void SHA1Builder::calculate(void) {
uint32_t last, padn;
uint32_t high, low;
uint8_t msglen[8];
high = (total[0] >> 29) | (total[1] << 3);
low = (total[0] << 3);
PUT_UINT32_BE(high, msglen, 0);
PUT_UINT32_BE(low, msglen, 4);
last = total[0] & 0x3F;
padn = (last < 56) ? (56 - last) : (120 - last);
add((uint8_t *)sha1_padding, padn);
add(msglen, 8);
PUT_UINT32_BE(state[0], hash, 0);
PUT_UINT32_BE(state[1], hash, 4);
PUT_UINT32_BE(state[2], hash, 8);
PUT_UINT32_BE(state[3], hash, 12);
PUT_UINT32_BE(state[4], hash, 16);
}
void SHA1Builder::getBytes(uint8_t *output) {
memcpy(output, hash, SHA1_HASH_SIZE);
}
#endif // ESP_IDF_VERSION_MAJOR < 5

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// Copyright 2024 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <Arduino.h>
#if ESP_IDF_VERSION_MAJOR < 5
#ifndef SHA1Builder_h
#define SHA1Builder_h
#include <Stream.h>
#include <WString.h>
#define SHA1_HASH_SIZE 20
class SHA1Builder {
private:
uint32_t total[2]; /* number of bytes processed */
uint32_t state[5]; /* intermediate digest state */
unsigned char buffer[64]; /* data block being processed */
uint8_t hash[SHA1_HASH_SIZE]; /* SHA-1 result */
void process(const uint8_t *data);
public:
void begin();
void add(const uint8_t *data, size_t len);
void calculate();
void getBytes(uint8_t *output);
};
#endif // SHA1Builder_h
#endif // ESP_IDF_VERSION_MAJOR < 5

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#include <ChunkPrint.h>
ChunkPrint::ChunkPrint(uint8_t *destination, size_t from, size_t len) : _destination(destination), _to_skip(from), _to_write(len), _pos{0} {}
size_t ChunkPrint::write(uint8_t c) {
if (_to_skip > 0) {
_to_skip--;
return 1;
} else if (_to_write > 0) {
_to_write--;
_destination[_pos++] = c;
return 1;
}
return 0;
}

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#ifndef CHUNKPRINT_H
#define CHUNKPRINT_H
#include <Print.h>
class ChunkPrint : public Print {
private:
uint8_t *_destination;
size_t _to_skip;
size_t _to_write;
size_t _pos;
public:
ChunkPrint(uint8_t *destination, size_t from, size_t len);
size_t write(uint8_t c);
size_t write(const uint8_t *buffer, size_t size) {
return this->Print::write(buffer, size);
}
};
#endif

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#include "WebAuthentication.h"
#include <ESPAsyncWebServer.h>
AsyncMiddlewareChain::~AsyncMiddlewareChain() {
for (AsyncMiddleware *m : _middlewares) {
if (m->_freeOnRemoval) {
delete m;
}
}
}
void AsyncMiddlewareChain::addMiddleware(ArMiddlewareCallback fn) {
AsyncMiddlewareFunction *m = new AsyncMiddlewareFunction(fn);
m->_freeOnRemoval = true;
_middlewares.emplace_back(m);
}
void AsyncMiddlewareChain::addMiddleware(AsyncMiddleware *middleware) {
if (middleware) {
_middlewares.emplace_back(middleware);
}
}
void AsyncMiddlewareChain::addMiddlewares(std::vector<AsyncMiddleware *> middlewares) {
for (AsyncMiddleware *m : middlewares) {
addMiddleware(m);
}
}
bool AsyncMiddlewareChain::removeMiddleware(AsyncMiddleware *middleware) {
// remove all middlewares from _middlewares vector being equal to middleware, delete them having _freeOnRemoval flag to true and resize the vector.
const size_t size = _middlewares.size();
_middlewares.erase(
std::remove_if(
_middlewares.begin(), _middlewares.end(),
[middleware](AsyncMiddleware *m) {
if (m == middleware) {
if (m->_freeOnRemoval) {
delete m;
}
return true;
}
return false;
}
),
_middlewares.end()
);
return size != _middlewares.size();
}
void AsyncMiddlewareChain::_runChain(AsyncWebServerRequest *request, ArMiddlewareNext finalizer) {
if (!_middlewares.size()) {
return finalizer();
}
ArMiddlewareNext next;
std::list<AsyncMiddleware *>::iterator it = _middlewares.begin();
next = [this, &next, &it, request, finalizer]() {
if (it == _middlewares.end()) {
return finalizer();
}
AsyncMiddleware *m = *it;
it++;
return m->run(request, next);
};
return next();
}
void AsyncAuthenticationMiddleware::setUsername(const char *username) {
_username = username;
_hasCreds = _username.length() && _credentials.length();
}
void AsyncAuthenticationMiddleware::setPassword(const char *password) {
_credentials = password;
_hash = false;
_hasCreds = _username.length() && _credentials.length();
}
void AsyncAuthenticationMiddleware::setPasswordHash(const char *hash) {
_credentials = hash;
_hash = _credentials.length();
_hasCreds = _username.length() && _credentials.length();
}
bool AsyncAuthenticationMiddleware::generateHash() {
// ensure we have all the necessary data
if (!_hasCreds) {
return false;
}
// if we already have a hash, do nothing
if (_hash) {
return false;
}
switch (_authMethod) {
case AsyncAuthType::AUTH_DIGEST:
_credentials = generateDigestHash(_username.c_str(), _credentials.c_str(), _realm.c_str());
if (_credentials.length()) {
_hash = true;
return true;
} else {
return false;
}
case AsyncAuthType::AUTH_BASIC:
_credentials = generateBasicHash(_username.c_str(), _credentials.c_str());
if (_credentials.length()) {
_hash = true;
return true;
} else {
return false;
}
default: return false;
}
}
bool AsyncAuthenticationMiddleware::allowed(AsyncWebServerRequest *request) const {
if (_authMethod == AsyncAuthType::AUTH_NONE) {
return true;
}
if (_authMethod == AsyncAuthType::AUTH_DENIED) {
return false;
}
if (!_hasCreds) {
return true;
}
return request->authenticate(_username.c_str(), _credentials.c_str(), _realm.c_str(), _hash);
}
void AsyncAuthenticationMiddleware::run(AsyncWebServerRequest *request, ArMiddlewareNext next) {
return allowed(request) ? next() : request->requestAuthentication(_authMethod, _realm.c_str(), _authFailMsg.c_str());
}
void AsyncHeaderFreeMiddleware::run(AsyncWebServerRequest *request, ArMiddlewareNext next) {
std::list<const char *> toRemove;
for (auto &h : request->getHeaders()) {
bool keep = false;
for (const char *k : _toKeep) {
if (strcasecmp(h.name().c_str(), k) == 0) {
keep = true;
break;
}
}
if (!keep) {
toRemove.push_back(h.name().c_str());
}
}
for (const char *h : toRemove) {
request->removeHeader(h);
}
next();
}
void AsyncHeaderFilterMiddleware::run(AsyncWebServerRequest *request, ArMiddlewareNext next) {
for (auto it = _toRemove.begin(); it != _toRemove.end(); ++it) {
request->removeHeader(*it);
}
next();
}
void AsyncLoggingMiddleware::run(AsyncWebServerRequest *request, ArMiddlewareNext next) {
if (!isEnabled()) {
next();
return;
}
_out->print(F("* Connection from "));
#ifndef LIBRETINY
_out->print(request->client()->remoteIP().toString());
#else
_out->print(request->client()->remoteIP());
#endif
_out->print(':');
_out->println(request->client()->remotePort());
_out->print('>');
_out->print(' ');
_out->print(request->methodToString());
_out->print(' ');
_out->print(request->url().c_str());
_out->print(F(" HTTP/1."));
_out->println(request->version());
for (auto &h : request->getHeaders()) {
if (h.value().length()) {
_out->print('>');
_out->print(' ');
_out->print(h.name());
_out->print(':');
_out->print(' ');
_out->println(h.value());
}
}
_out->println(F(">"));
uint32_t elapsed = millis();
next();
elapsed = millis() - elapsed;
AsyncWebServerResponse *response = request->getResponse();
if (response) {
_out->print(F("* Processed in "));
_out->print(elapsed);
_out->println(F(" ms"));
_out->print('<');
_out->print(F(" HTTP/1."));
_out->print(request->version());
_out->print(' ');
_out->print(response->code());
_out->print(' ');
_out->println(AsyncWebServerResponse::responseCodeToString(response->code()));
for (auto &h : response->getHeaders()) {
if (h.value().length()) {
_out->print('<');
_out->print(' ');
_out->print(h.name());
_out->print(':');
_out->print(' ');
_out->println(h.value());
}
}
_out->println('<');
} else {
_out->println(F("* Connection closed!"));
}
}
void AsyncCorsMiddleware::addCORSHeaders(AsyncWebServerResponse *response) {
response->addHeader(asyncsrv::T_CORS_ACAO, _origin.c_str());
response->addHeader(asyncsrv::T_CORS_ACAM, _methods.c_str());
response->addHeader(asyncsrv::T_CORS_ACAH, _headers.c_str());
response->addHeader(asyncsrv::T_CORS_ACAC, _credentials ? asyncsrv::T_TRUE : asyncsrv::T_FALSE);
response->addHeader(asyncsrv::T_CORS_ACMA, String(_maxAge).c_str());
}
void AsyncCorsMiddleware::run(AsyncWebServerRequest *request, ArMiddlewareNext next) {
// Origin header ? => CORS handling
if (request->hasHeader(asyncsrv::T_CORS_O)) {
// check if this is a preflight request => handle it and return
if (request->method() == HTTP_OPTIONS) {
AsyncWebServerResponse *response = request->beginResponse(200);
addCORSHeaders(response);
request->send(response);
return;
}
// CORS request, no options => let the request pass and add CORS headers after
next();
AsyncWebServerResponse *response = request->getResponse();
if (response) {
addCORSHeaders(response);
}
} else {
// NO Origin header => no CORS handling
next();
}
}
bool AsyncRateLimitMiddleware::isRequestAllowed(uint32_t &retryAfterSeconds) {
uint32_t now = millis();
while (!_requestTimes.empty() && _requestTimes.front() <= now - _windowSizeMillis) {
_requestTimes.pop_front();
}
_requestTimes.push_back(now);
if (_requestTimes.size() > _maxRequests) {
_requestTimes.pop_front();
retryAfterSeconds = (_windowSizeMillis - (now - _requestTimes.front())) / 1000 + 1;
return false;
}
retryAfterSeconds = 0;
return true;
}
void AsyncRateLimitMiddleware::run(AsyncWebServerRequest *request, ArMiddlewareNext next) {
uint32_t retryAfterSeconds;
if (isRequestAllowed(retryAfterSeconds)) {
next();
} else {
AsyncWebServerResponse *response = request->beginResponse(429);
response->addHeader(asyncsrv::T_retry_after, retryAfterSeconds);
request->send(response);
}
}

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#include "WebAuthentication.h"
#include "AsyncWebServerLogging.h"
#include <libb64/cencode.h>
#if defined(ESP32) || defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
#include <MD5Builder.h>
#else
#include "md5.h"
#endif
#include "literals.h"
using namespace asyncsrv;
// Basic Auth hash = base64("username:password")
bool checkBasicAuthentication(const char *hash, const char *username, const char *password) {
if (username == NULL || password == NULL || hash == NULL) {
return false;
}
return generateBasicHash(username, password).equalsIgnoreCase(hash);
}
String generateBasicHash(const char *username, const char *password) {
if (username == NULL || password == NULL) {
return emptyString;
}
size_t toencodeLen = strlen(username) + strlen(password) + 1;
char *toencode = new char[toencodeLen + 1];
if (toencode == NULL) {
return emptyString;
}
char *encoded = new char[base64_encode_expected_len(toencodeLen) + 1];
if (encoded == NULL) {
delete[] toencode;
return emptyString;
}
sprintf_P(toencode, PSTR("%s:%s"), username, password);
if (base64_encode_chars(toencode, toencodeLen, encoded) > 0) {
String res = String(encoded);
delete[] toencode;
delete[] encoded;
return res;
}
delete[] toencode;
delete[] encoded;
return emptyString;
}
static bool getMD5(uint8_t *data, uint16_t len, char *output) { // 33 bytes or more
#if defined(ESP32) || defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
MD5Builder md5;
md5.begin();
md5.add(data, len);
md5.calculate();
md5.getChars(output);
#else
md5_context_t _ctx;
uint8_t *_buf = (uint8_t *)malloc(16);
if (_buf == NULL) {
return false;
}
memset(_buf, 0x00, 16);
MD5Init(&_ctx);
MD5Update(&_ctx, data, len);
MD5Final(_buf, &_ctx);
for (uint8_t i = 0; i < 16; i++) {
sprintf_P(output + (i * 2), PSTR("%02x"), _buf[i]);
}
free(_buf);
#endif
return true;
}
String genRandomMD5() {
#ifdef ESP8266
uint32_t r = RANDOM_REG32;
#else
uint32_t r = rand();
#endif
char *out = (char *)malloc(33);
if (out == NULL || !getMD5((uint8_t *)(&r), 4, out)) {
async_ws_log_e("Failed to allocate");
return emptyString;
}
String res = String(out);
free(out);
return res;
}
static String stringMD5(const String &in) {
char *out = (char *)malloc(33);
if (out == NULL || !getMD5((uint8_t *)(in.c_str()), in.length(), out)) {
async_ws_log_e("Failed to allocate");
return emptyString;
}
String res = String(out);
free(out);
return res;
}
String generateDigestHash(const char *username, const char *password, const char *realm) {
if (username == NULL || password == NULL || realm == NULL) {
return emptyString;
}
char *out = (char *)malloc(33);
if (out == NULL) {
async_ws_log_e("Failed to allocate");
return emptyString;
}
String in;
if (!in.reserve(strlen(username) + strlen(realm) + strlen(password) + 2)) {
async_ws_log_e("Failed to allocate");
free(out);
return emptyString;
}
in.concat(username);
in.concat(':');
in.concat(realm);
in.concat(':');
in.concat(password);
if (!getMD5((uint8_t *)(in.c_str()), in.length(), out)) {
async_ws_log_e("Failed to allocate");
free(out);
return emptyString;
}
in = String(out);
free(out);
return in;
}
bool checkDigestAuthentication(
const char *header, const char *method, const char *username, const char *password, const char *realm, bool passwordIsHash, const char *nonce,
const char *opaque, const char *uri
) {
if (username == NULL || password == NULL || header == NULL || method == NULL) {
// os_printf("AUTH FAIL: missing required fields\n");
return false;
}
String myHeader(header);
int nextBreak = myHeader.indexOf(',');
if (nextBreak < 0) {
// os_printf("AUTH FAIL: no variables\n");
return false;
}
String myUsername;
String myRealm;
String myNonce;
String myUri;
String myResponse;
String myQop;
String myNc;
String myCnonce;
myHeader += (char)0x2c; // ','
myHeader += (char)0x20; // ' '
do {
String avLine(myHeader.substring(0, nextBreak));
avLine.trim();
myHeader = myHeader.substring(nextBreak + 1);
nextBreak = myHeader.indexOf(',');
int eqSign = avLine.indexOf('=');
if (eqSign < 0) {
// os_printf("AUTH FAIL: no = sign\n");
return false;
}
String varName(avLine.substring(0, eqSign));
avLine = avLine.substring(eqSign + 1);
if (avLine.startsWith(String('"'))) {
avLine = avLine.substring(1, avLine.length() - 1);
}
if (varName.equals(T_username)) {
if (!avLine.equals(username)) {
// os_printf("AUTH FAIL: username\n");
return false;
}
myUsername = avLine;
} else if (varName.equals(T_realm)) {
if (realm != NULL && !avLine.equals(realm)) {
// os_printf("AUTH FAIL: realm\n");
return false;
}
myRealm = avLine;
} else if (varName.equals(T_nonce)) {
if (nonce != NULL && !avLine.equals(nonce)) {
// os_printf("AUTH FAIL: nonce\n");
return false;
}
myNonce = avLine;
} else if (varName.equals(T_opaque)) {
if (opaque != NULL && !avLine.equals(opaque)) {
// os_printf("AUTH FAIL: opaque\n");
return false;
}
} else if (varName.equals(T_uri)) {
if (uri != NULL && !avLine.equals(uri)) {
// os_printf("AUTH FAIL: uri\n");
return false;
}
myUri = avLine;
} else if (varName.equals(T_response)) {
myResponse = avLine;
} else if (varName.equals(T_qop)) {
myQop = avLine;
} else if (varName.equals(T_nc)) {
myNc = avLine;
} else if (varName.equals(T_cnonce)) {
myCnonce = avLine;
}
} while (nextBreak > 0);
String ha1 = passwordIsHash ? password : stringMD5(myUsername + ':' + myRealm + ':' + password).c_str();
String ha2 = stringMD5(String(method) + ':' + myUri);
String response = ha1 + ':' + myNonce + ':' + myNc + ':' + myCnonce + ':' + myQop + ':' + ha2;
if (myResponse.equals(stringMD5(response))) {
// os_printf("AUTH SUCCESS\n");
return true;
}
// os_printf("AUTH FAIL: password\n");
return false;
}

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#ifndef WEB_AUTHENTICATION_H_
#define WEB_AUTHENTICATION_H_
#include "Arduino.h"
bool checkBasicAuthentication(const char *header, const char *username, const char *password);
bool checkDigestAuthentication(
const char *header, const char *method, const char *username, const char *password, const char *realm, bool passwordIsHash, const char *nonce,
const char *opaque, const char *uri
);
// for storing hashed versions on the device that can be authenticated against
String generateDigestHash(const char *username, const char *password, const char *realm);
String generateBasicHash(const char *username, const char *password);
String genRandomMD5();
#endif

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#ifndef ASYNCWEBSERVERHANDLERIMPL_H_
#define ASYNCWEBSERVERHANDLERIMPL_H_
#include <string>
#ifdef ASYNCWEBSERVER_REGEX
#include <regex>
#endif
#include "stddef.h"
#include <time.h>
class AsyncStaticWebHandler : public AsyncWebHandler {
using File = fs::File;
using FS = fs::FS;
private:
bool _getFile(AsyncWebServerRequest *request) const;
bool _searchFile(AsyncWebServerRequest *request, const String &path);
protected:
FS _fs;
String _uri;
String _path;
String _default_file;
String _cache_control;
String _last_modified;
AwsTemplateProcessor _callback;
bool _isDir;
bool _tryGzipFirst = true;
public:
AsyncStaticWebHandler(const char *uri, FS &fs, const char *path, const char *cache_control);
bool canHandle(AsyncWebServerRequest *request) const override final;
void handleRequest(AsyncWebServerRequest *request) override final;
AsyncStaticWebHandler &setTryGzipFirst(bool value);
AsyncStaticWebHandler &setIsDir(bool isDir);
AsyncStaticWebHandler &setDefaultFile(const char *filename);
AsyncStaticWebHandler &setCacheControl(const char *cache_control);
/**
* @brief Set the Last-Modified time for the object
*
* @param last_modified
* @return AsyncStaticWebHandler&
*/
AsyncStaticWebHandler &setLastModified(const char *last_modified);
AsyncStaticWebHandler &setLastModified(struct tm *last_modified);
AsyncStaticWebHandler &setLastModified(time_t last_modified);
// sets to current time. Make sure sntp is running and time is updated
AsyncStaticWebHandler &setLastModified();
AsyncStaticWebHandler &setTemplateProcessor(AwsTemplateProcessor newCallback);
};
class AsyncCallbackWebHandler : public AsyncWebHandler {
private:
protected:
String _uri;
WebRequestMethodComposite _method;
ArRequestHandlerFunction _onRequest;
ArUploadHandlerFunction _onUpload;
ArBodyHandlerFunction _onBody;
bool _isRegex;
public:
AsyncCallbackWebHandler() : _uri(), _method(HTTP_ANY), _onRequest(NULL), _onUpload(NULL), _onBody(NULL), _isRegex(false) {}
void setUri(const String &uri);
void setMethod(WebRequestMethodComposite method) {
_method = method;
}
void onRequest(ArRequestHandlerFunction fn) {
_onRequest = fn;
}
void onUpload(ArUploadHandlerFunction fn) {
_onUpload = fn;
}
void onBody(ArBodyHandlerFunction fn) {
_onBody = fn;
}
bool canHandle(AsyncWebServerRequest *request) const override final;
void handleRequest(AsyncWebServerRequest *request) override final;
void handleUpload(AsyncWebServerRequest *request, const String &filename, size_t index, uint8_t *data, size_t len, bool final) override final;
void handleBody(AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total) override final;
bool isRequestHandlerTrivial() const override final {
return !_onRequest;
}
};
#endif /* ASYNCWEBSERVERHANDLERIMPL_H_ */

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#include "ESPAsyncWebServer.h"
#include "WebHandlerImpl.h"
#include "AsyncWebServerLogging.h"
using namespace asyncsrv;
AsyncWebHandler &AsyncWebHandler::setFilter(ArRequestFilterFunction fn) {
_filter = fn;
return *this;
}
AsyncWebHandler &AsyncWebHandler::setAuthentication(const char *username, const char *password, AsyncAuthType authMethod) {
if (!_authMiddleware) {
_authMiddleware = new AsyncAuthenticationMiddleware();
_authMiddleware->_freeOnRemoval = true;
addMiddleware(_authMiddleware);
}
_authMiddleware->setUsername(username);
_authMiddleware->setPassword(password);
_authMiddleware->setAuthType(authMethod);
return *this;
};
AsyncStaticWebHandler::AsyncStaticWebHandler(const char *uri, FS &fs, const char *path, const char *cache_control)
: _fs(fs), _uri(uri), _path(path), _default_file(F("index.htm")), _cache_control(cache_control), _last_modified(), _callback(nullptr) {
// Ensure leading '/'
if (_uri.length() == 0 || _uri[0] != '/') {
_uri = String('/') + _uri;
}
if (_path.length() == 0 || _path[0] != '/') {
_path = String('/') + _path;
}
// If path ends with '/' we assume a hint that this is a directory to improve performance.
// However - if it does not end with '/' we, can't assume a file, path can still be a directory.
_isDir = _path[_path.length() - 1] == '/';
// Remove the trailing '/' so we can handle default file
// Notice that root will be "" not "/"
if (_uri[_uri.length() - 1] == '/') {
_uri = _uri.substring(0, _uri.length() - 1);
}
if (_path[_path.length() - 1] == '/') {
_path = _path.substring(0, _path.length() - 1);
}
}
AsyncStaticWebHandler &AsyncStaticWebHandler::setTryGzipFirst(bool value) {
_tryGzipFirst = value;
return *this;
}
AsyncStaticWebHandler &AsyncStaticWebHandler::setIsDir(bool isDir) {
_isDir = isDir;
return *this;
}
AsyncStaticWebHandler &AsyncStaticWebHandler::setDefaultFile(const char *filename) {
_default_file = filename;
return *this;
}
AsyncStaticWebHandler &AsyncStaticWebHandler::setCacheControl(const char *cache_control) {
_cache_control = cache_control;
return *this;
}
AsyncStaticWebHandler &AsyncStaticWebHandler::setLastModified(const char *last_modified) {
_last_modified = last_modified;
return *this;
}
AsyncStaticWebHandler &AsyncStaticWebHandler::setLastModified(struct tm *last_modified) {
char result[30];
#ifdef ESP8266
auto formatP = PSTR("%a, %d %b %Y %H:%M:%S GMT");
char format[strlen_P(formatP) + 1];
strcpy_P(format, formatP);
#else
static constexpr const char *format = "%a, %d %b %Y %H:%M:%S GMT";
#endif
strftime(result, sizeof(result), format, last_modified);
_last_modified = result;
return *this;
}
AsyncStaticWebHandler &AsyncStaticWebHandler::setLastModified(time_t last_modified) {
return setLastModified((struct tm *)gmtime(&last_modified));
}
AsyncStaticWebHandler &AsyncStaticWebHandler::setLastModified() {
time_t last_modified;
if (time(&last_modified) == 0) { // time is not yet set
return *this;
}
return setLastModified(last_modified);
}
bool AsyncStaticWebHandler::canHandle(AsyncWebServerRequest *request) const {
return request->isHTTP() && request->method() == HTTP_GET && request->url().startsWith(_uri) && _getFile(request);
}
bool AsyncStaticWebHandler::_getFile(AsyncWebServerRequest *request) const {
// Remove the found uri
String path = request->url().substring(_uri.length());
// We can skip the file check and look for default if request is to the root of a directory or that request path ends with '/'
bool canSkipFileCheck = (_isDir && path.length() == 0) || (path.length() && path[path.length() - 1] == '/');
path = _path + path;
// Do we have a file or .gz file
if (!canSkipFileCheck && const_cast<AsyncStaticWebHandler *>(this)->_searchFile(request, path)) {
return true;
}
// Can't handle if not default file
if (_default_file.length() == 0) {
return false;
}
// Try to add default file, ensure there is a trailing '/' to the path.
if (path.length() == 0 || path[path.length() - 1] != '/') {
path += String('/');
}
path += _default_file;
return const_cast<AsyncStaticWebHandler *>(this)->_searchFile(request, path);
}
#ifdef ESP32
#define FILE_IS_REAL(f) (f == true && !f.isDirectory())
#else
#define FILE_IS_REAL(f) (f == true)
#endif
bool AsyncStaticWebHandler::_searchFile(AsyncWebServerRequest *request, const String &path) {
bool fileFound = false;
bool gzipFound = false;
String gzip = path + T__gz;
if (_tryGzipFirst) {
if (_fs.exists(gzip)) {
request->_tempFile = _fs.open(gzip, fs::FileOpenMode::read);
gzipFound = FILE_IS_REAL(request->_tempFile);
}
if (!gzipFound) {
if (_fs.exists(path)) {
request->_tempFile = _fs.open(path, fs::FileOpenMode::read);
fileFound = FILE_IS_REAL(request->_tempFile);
}
}
} else {
if (_fs.exists(path)) {
request->_tempFile = _fs.open(path, fs::FileOpenMode::read);
fileFound = FILE_IS_REAL(request->_tempFile);
}
if (!fileFound) {
if (_fs.exists(gzip)) {
request->_tempFile = _fs.open(gzip, fs::FileOpenMode::read);
gzipFound = FILE_IS_REAL(request->_tempFile);
}
}
}
bool found = fileFound || gzipFound;
if (found) {
// Extract the file name from the path and keep it in _tempObject
size_t pathLen = path.length();
char *_tempPath = (char *)malloc(pathLen + 1);
if (_tempPath == NULL) {
async_ws_log_e("Failed to allocate");
request->abort();
request->_tempFile.close();
return false;
}
snprintf_P(_tempPath, pathLen + 1, PSTR("%s"), path.c_str());
request->_tempObject = (void *)_tempPath;
}
return found;
}
void AsyncStaticWebHandler::handleRequest(AsyncWebServerRequest *request) {
// Get the filename from request->_tempObject and free it
String filename((char *)request->_tempObject);
free(request->_tempObject);
request->_tempObject = NULL;
if (request->_tempFile != true) {
request->send(404);
return;
}
time_t lw = request->_tempFile.getLastWrite(); // get last file mod time (if supported by FS)
// set etag to lastmod timestamp if available, otherwise to size
String etag;
if (lw) {
setLastModified(lw);
#if defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
// time_t == long long int
constexpr size_t len = 1 + 8 * sizeof(time_t);
char buf[len];
char *ret = lltoa(lw ^ request->_tempFile.size(), buf, len, 10);
etag = ret ? String(ret) : String(request->_tempFile.size());
#elif defined(LIBRETINY)
long val = lw ^ request->_tempFile.size();
etag = String(val);
#else
etag = lw ^ request->_tempFile.size(); // etag combines file size and lastmod timestamp
#endif
} else {
#if defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350) || defined(LIBRETINY)
etag = String(request->_tempFile.size());
#else
etag = request->_tempFile.size();
#endif
}
bool not_modified = false;
// if-none-match has precedence over if-modified-since
if (request->hasHeader(T_INM)) {
not_modified = request->header(T_INM).equals(etag);
} else if (_last_modified.length()) {
not_modified = request->header(T_IMS).equals(_last_modified);
}
AsyncWebServerResponse *response;
if (not_modified) {
request->_tempFile.close();
response = new AsyncBasicResponse(304); // Not modified
} else {
response = new AsyncFileResponse(request->_tempFile, filename, emptyString, false, _callback);
}
if (!response) {
async_ws_log_e("Failed to allocate");
request->abort();
return;
}
response->addHeader(T_ETag, etag.c_str());
if (_last_modified.length()) {
response->addHeader(T_Last_Modified, _last_modified.c_str());
}
if (_cache_control.length()) {
response->addHeader(T_Cache_Control, _cache_control.c_str());
}
request->send(response);
}
AsyncStaticWebHandler &AsyncStaticWebHandler::setTemplateProcessor(AwsTemplateProcessor newCallback) {
_callback = newCallback;
return *this;
}
void AsyncCallbackWebHandler::setUri(const String &uri) {
_uri = uri;
_isRegex = uri.startsWith("^") && uri.endsWith("$");
}
bool AsyncCallbackWebHandler::canHandle(AsyncWebServerRequest *request) const {
if (!_onRequest || !request->isHTTP() || !(_method & request->method())) {
return false;
}
#ifdef ASYNCWEBSERVER_REGEX
if (_isRegex) {
std::regex pattern(_uri.c_str());
std::smatch matches;
std::string s(request->url().c_str());
if (std::regex_search(s, matches, pattern)) {
for (size_t i = 1; i < matches.size(); ++i) { // start from 1
request->_addPathParam(matches[i].str().c_str());
}
} else {
return false;
}
} else
#endif
if (_uri.length() && _uri.startsWith("/*.")) {
String uriTemplate = String(_uri);
uriTemplate = uriTemplate.substring(uriTemplate.lastIndexOf("."));
if (!request->url().endsWith(uriTemplate)) {
return false;
}
} else if (_uri.length() && _uri.endsWith("*")) {
String uriTemplate = String(_uri);
uriTemplate = uriTemplate.substring(0, uriTemplate.length() - 1);
if (!request->url().startsWith(uriTemplate)) {
return false;
}
} else if (_uri.length() && (_uri != request->url() && !request->url().startsWith(_uri + "/"))) {
return false;
}
return true;
}
void AsyncCallbackWebHandler::handleRequest(AsyncWebServerRequest *request) {
if (_onRequest) {
_onRequest(request);
} else {
request->send(404, T_text_plain, "Not found");
}
}
void AsyncCallbackWebHandler::handleUpload(AsyncWebServerRequest *request, const String &filename, size_t index, uint8_t *data, size_t len, bool final) {
if (_onUpload) {
_onUpload(request, filename, index, data, len, final);
}
}
void AsyncCallbackWebHandler::handleBody(AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total) {
// ESP_LOGD("AsyncWebServer", "AsyncCallbackWebHandler::handleBody");
if (_onBody) {
_onBody(request, data, len, index, total);
}
}

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#ifndef ASYNCWEBSERVERRESPONSEIMPL_H_
#define ASYNCWEBSERVERRESPONSEIMPL_H_
#ifdef Arduino_h
// arduino is not compatible with std::vector
#undef min
#undef max
#endif
#include "literals.h"
#include <cbuf.h>
#include <memory>
#include <vector>
// It is possible to restore these defines, but one can use _min and _max instead. Or std::min, std::max.
class AsyncBasicResponse : public AsyncWebServerResponse {
private:
String _content;
public:
explicit AsyncBasicResponse(int code, const char *contentType = asyncsrv::empty, const char *content = asyncsrv::empty);
AsyncBasicResponse(int code, const String &contentType, const String &content = emptyString)
: AsyncBasicResponse(code, contentType.c_str(), content.c_str()) {}
void _respond(AsyncWebServerRequest *request) override final;
size_t _ack(AsyncWebServerRequest *request, size_t len, uint32_t time) override final;
bool _sourceValid() const override final {
return true;
}
};
class AsyncAbstractResponse : public AsyncWebServerResponse {
private:
#if ASYNCWEBSERVER_USE_CHUNK_INFLIGHT
// amount of response data in-flight, i.e. sent, but not acked yet
size_t _in_flight{0};
// in-flight queue credits
size_t _in_flight_credit{2};
#endif
String _head;
// Data is inserted into cache at begin().
// This is inefficient with vector, but if we use some other container,
// we won't be able to access it as contiguous array of bytes when reading from it,
// so by gaining performance in one place, we'll lose it in another.
std::vector<uint8_t> _cache;
size_t _readDataFromCacheOrContent(uint8_t *data, const size_t len);
size_t _fillBufferAndProcessTemplates(uint8_t *buf, size_t maxLen);
protected:
AwsTemplateProcessor _callback;
public:
AsyncAbstractResponse(AwsTemplateProcessor callback = nullptr);
virtual ~AsyncAbstractResponse() {}
void _respond(AsyncWebServerRequest *request) override final;
size_t _ack(AsyncWebServerRequest *request, size_t len, uint32_t time) override final;
virtual bool _sourceValid() const {
return false;
}
virtual size_t _fillBuffer(uint8_t *buf __attribute__((unused)), size_t maxLen __attribute__((unused))) {
return 0;
}
};
#ifndef TEMPLATE_PLACEHOLDER
#define TEMPLATE_PLACEHOLDER '%'
#endif
#define TEMPLATE_PARAM_NAME_LENGTH 32
class AsyncFileResponse : public AsyncAbstractResponse {
using File = fs::File;
using FS = fs::FS;
private:
File _content;
void _setContentTypeFromPath(const String &path);
public:
AsyncFileResponse(FS &fs, const String &path, const char *contentType = asyncsrv::empty, bool download = false, AwsTemplateProcessor callback = nullptr);
AsyncFileResponse(FS &fs, const String &path, const String &contentType, bool download = false, AwsTemplateProcessor callback = nullptr)
: AsyncFileResponse(fs, path, contentType.c_str(), download, callback) {}
AsyncFileResponse(
File content, const String &path, const char *contentType = asyncsrv::empty, bool download = false, AwsTemplateProcessor callback = nullptr
);
AsyncFileResponse(File content, const String &path, const String &contentType, bool download = false, AwsTemplateProcessor callback = nullptr)
: AsyncFileResponse(content, path, contentType.c_str(), download, callback) {}
~AsyncFileResponse() {
_content.close();
}
bool _sourceValid() const override final {
return !!(_content);
}
size_t _fillBuffer(uint8_t *buf, size_t maxLen) override final;
};
class AsyncStreamResponse : public AsyncAbstractResponse {
private:
Stream *_content;
public:
AsyncStreamResponse(Stream &stream, const char *contentType, size_t len, AwsTemplateProcessor callback = nullptr);
AsyncStreamResponse(Stream &stream, const String &contentType, size_t len, AwsTemplateProcessor callback = nullptr)
: AsyncStreamResponse(stream, contentType.c_str(), len, callback) {}
bool _sourceValid() const override final {
return !!(_content);
}
size_t _fillBuffer(uint8_t *buf, size_t maxLen) override final;
};
class AsyncCallbackResponse : public AsyncAbstractResponse {
private:
AwsResponseFiller _content;
size_t _filledLength;
public:
AsyncCallbackResponse(const char *contentType, size_t len, AwsResponseFiller callback, AwsTemplateProcessor templateCallback = nullptr);
AsyncCallbackResponse(const String &contentType, size_t len, AwsResponseFiller callback, AwsTemplateProcessor templateCallback = nullptr)
: AsyncCallbackResponse(contentType.c_str(), len, callback, templateCallback) {}
bool _sourceValid() const override final {
return !!(_content);
}
size_t _fillBuffer(uint8_t *buf, size_t maxLen) override final;
};
class AsyncChunkedResponse : public AsyncAbstractResponse {
private:
AwsResponseFiller _content;
size_t _filledLength;
public:
AsyncChunkedResponse(const char *contentType, AwsResponseFiller callback, AwsTemplateProcessor templateCallback = nullptr);
AsyncChunkedResponse(const String &contentType, AwsResponseFiller callback, AwsTemplateProcessor templateCallback = nullptr)
: AsyncChunkedResponse(contentType.c_str(), callback, templateCallback) {}
bool _sourceValid() const override final {
return !!(_content);
}
size_t _fillBuffer(uint8_t *buf, size_t maxLen) override final;
};
class AsyncProgmemResponse : public AsyncAbstractResponse {
private:
const uint8_t *_content;
size_t _readLength;
public:
AsyncProgmemResponse(int code, const char *contentType, const uint8_t *content, size_t len, AwsTemplateProcessor callback = nullptr);
AsyncProgmemResponse(int code, const String &contentType, const uint8_t *content, size_t len, AwsTemplateProcessor callback = nullptr)
: AsyncProgmemResponse(code, contentType.c_str(), content, len, callback) {}
bool _sourceValid() const override final {
return true;
}
size_t _fillBuffer(uint8_t *buf, size_t maxLen) override final;
};
class AsyncResponseStream : public AsyncAbstractResponse, public Print {
private:
std::unique_ptr<cbuf> _content;
public:
AsyncResponseStream(const char *contentType, size_t bufferSize);
AsyncResponseStream(const String &contentType, size_t bufferSize) : AsyncResponseStream(contentType.c_str(), bufferSize) {}
bool _sourceValid() const override final {
return (_state < RESPONSE_END);
}
size_t _fillBuffer(uint8_t *buf, size_t maxLen) override final;
size_t write(const uint8_t *data, size_t len);
size_t write(uint8_t data);
/**
* @brief Returns the number of bytes available in the stream.
*/
size_t available() const {
return _content->available();
}
using Print::write;
};
#endif /* ASYNCWEBSERVERRESPONSEIMPL_H_ */

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#include "ESPAsyncWebServer.h"
#include "WebResponseImpl.h"
#include "AsyncWebServerLogging.h"
using namespace asyncsrv;
/*
* Abstract Response
*
*/
const char *AsyncWebServerResponse::responseCodeToString(int code) {
switch (code) {
case 100: return T_HTTP_CODE_100;
case 101: return T_HTTP_CODE_101;
case 200: return T_HTTP_CODE_200;
case 201: return T_HTTP_CODE_201;
case 202: return T_HTTP_CODE_202;
case 203: return T_HTTP_CODE_203;
case 204: return T_HTTP_CODE_204;
case 205: return T_HTTP_CODE_205;
case 206: return T_HTTP_CODE_206;
case 300: return T_HTTP_CODE_300;
case 301: return T_HTTP_CODE_301;
case 302: return T_HTTP_CODE_302;
case 303: return T_HTTP_CODE_303;
case 304: return T_HTTP_CODE_304;
case 305: return T_HTTP_CODE_305;
case 307: return T_HTTP_CODE_307;
case 400: return T_HTTP_CODE_400;
case 401: return T_HTTP_CODE_401;
case 402: return T_HTTP_CODE_402;
case 403: return T_HTTP_CODE_403;
case 404: return T_HTTP_CODE_404;
case 405: return T_HTTP_CODE_405;
case 406: return T_HTTP_CODE_406;
case 407: return T_HTTP_CODE_407;
case 408: return T_HTTP_CODE_408;
case 409: return T_HTTP_CODE_409;
case 410: return T_HTTP_CODE_410;
case 411: return T_HTTP_CODE_411;
case 412: return T_HTTP_CODE_412;
case 413: return T_HTTP_CODE_413;
case 414: return T_HTTP_CODE_414;
case 415: return T_HTTP_CODE_415;
case 416: return T_HTTP_CODE_416;
case 417: return T_HTTP_CODE_417;
case 429: return T_HTTP_CODE_429;
case 500: return T_HTTP_CODE_500;
case 501: return T_HTTP_CODE_501;
case 502: return T_HTTP_CODE_502;
case 503: return T_HTTP_CODE_503;
case 504: return T_HTTP_CODE_504;
case 505: return T_HTTP_CODE_505;
default: return T_HTTP_CODE_ANY;
}
}
AsyncWebServerResponse::AsyncWebServerResponse()
: _code(0), _contentType(), _contentLength(0), _sendContentLength(true), _chunked(false), _headLength(0), _sentLength(0), _ackedLength(0), _writtenLength(0),
_state(RESPONSE_SETUP) {
for (const auto &header : DefaultHeaders::Instance()) {
_headers.emplace_back(header);
}
}
void AsyncWebServerResponse::setCode(int code) {
if (_state == RESPONSE_SETUP) {
_code = code;
}
}
void AsyncWebServerResponse::setContentLength(size_t len) {
if (_state == RESPONSE_SETUP && addHeader(T_Content_Length, len, true)) {
_contentLength = len;
}
}
void AsyncWebServerResponse::setContentType(const char *type) {
if (_state == RESPONSE_SETUP && addHeader(T_Content_Type, type, true)) {
_contentType = type;
}
}
bool AsyncWebServerResponse::removeHeader(const char *name) {
bool h_erased = false;
for (auto i = _headers.begin(); i != _headers.end();) {
if (i->name().equalsIgnoreCase(name)) {
_headers.erase(i);
h_erased = true;
} else {
++i;
}
}
return h_erased;
}
bool AsyncWebServerResponse::removeHeader(const char *name, const char *value) {
for (auto i = _headers.begin(); i != _headers.end(); ++i) {
if (i->name().equalsIgnoreCase(name) && i->value().equalsIgnoreCase(value)) {
_headers.erase(i);
return true;
}
}
return false;
}
const AsyncWebHeader *AsyncWebServerResponse::getHeader(const char *name) const {
auto iter = std::find_if(std::begin(_headers), std::end(_headers), [&name](const AsyncWebHeader &header) {
return header.name().equalsIgnoreCase(name);
});
return (iter == std::end(_headers)) ? nullptr : &(*iter);
}
bool AsyncWebServerResponse::headerMustBePresentOnce(const String &name) {
for (uint8_t i = 0; i < T_only_once_headers_len; i++) {
if (name.equalsIgnoreCase(T_only_once_headers[i])) {
return true;
}
}
return false;
}
bool AsyncWebServerResponse::addHeader(AsyncWebHeader &&header, bool replaceExisting) {
if (!header) {
return false; // invalid header
}
for (auto i = _headers.begin(); i != _headers.end(); ++i) {
if (i->name().equalsIgnoreCase(header.name())) {
// header already set
if (replaceExisting) {
// remove, break and add the new one
_headers.erase(i);
break;
} else if (headerMustBePresentOnce(i->name())) { // we can have only one header with that name
// do not update
return false;
} else {
break; // accept multiple headers with the same name
}
}
}
// header was not found found, or existing one was removed
_headers.emplace_back(std::move(header));
return true;
}
bool AsyncWebServerResponse::addHeader(const char *name, const char *value, bool replaceExisting) {
for (auto i = _headers.begin(); i != _headers.end(); ++i) {
if (i->name().equalsIgnoreCase(name)) {
// header already set
if (replaceExisting) {
// remove, break and add the new one
_headers.erase(i);
break;
} else if (headerMustBePresentOnce(i->name())) { // we can have only one header with that name
// do not update
return false;
} else {
break; // accept multiple headers with the same name
}
}
}
// header was not found found, or existing one was removed
_headers.emplace_back(name, value);
return true;
}
void AsyncWebServerResponse::_assembleHead(String &buffer, uint8_t version) {
if (version) {
addHeader(T_Accept_Ranges, T_none, false);
if (_chunked) {
addHeader(T_Transfer_Encoding, T_chunked, false);
}
}
if (_sendContentLength) {
addHeader(T_Content_Length, String(_contentLength), false);
}
if (_contentType.length()) {
addHeader(T_Content_Type, _contentType.c_str(), false);
}
// precompute buffer size to avoid reallocations by String class
size_t len = 0;
len += 50; // HTTP/1.1 200 <reason>\r\n
for (const auto &header : _headers) {
len += header.name().length() + header.value().length() + 4;
}
// prepare buffer
buffer.reserve(len);
// HTTP header
#ifdef ESP8266
buffer.concat(PSTR("HTTP/1."));
#else
buffer.concat("HTTP/1.");
#endif
buffer.concat(version);
buffer.concat(' ');
buffer.concat(_code);
buffer.concat(' ');
buffer.concat(responseCodeToString(_code));
buffer.concat(T_rn);
// Add headers
for (const auto &header : _headers) {
buffer.concat(header.name());
#ifdef ESP8266
buffer.concat(PSTR(": "));
#else
buffer.concat(": ");
#endif
buffer.concat(header.value());
buffer.concat(T_rn);
}
buffer.concat(T_rn);
_headLength = buffer.length();
}
bool AsyncWebServerResponse::_started() const {
return _state > RESPONSE_SETUP;
}
bool AsyncWebServerResponse::_finished() const {
return _state > RESPONSE_WAIT_ACK;
}
bool AsyncWebServerResponse::_failed() const {
return _state == RESPONSE_FAILED;
}
bool AsyncWebServerResponse::_sourceValid() const {
return false;
}
void AsyncWebServerResponse::_respond(AsyncWebServerRequest *request) {
_state = RESPONSE_END;
request->client()->close();
}
size_t AsyncWebServerResponse::_ack(AsyncWebServerRequest *request, size_t len, uint32_t time) {
(void)request;
(void)len;
(void)time;
return 0;
}
/*
* String/Code Response
* */
AsyncBasicResponse::AsyncBasicResponse(int code, const char *contentType, const char *content) {
_code = code;
_content = content;
_contentType = contentType;
if (_content.length()) {
_contentLength = _content.length();
if (!_contentType.length()) {
_contentType = T_text_plain;
}
}
addHeader(T_Connection, T_close, false);
}
void AsyncBasicResponse::_respond(AsyncWebServerRequest *request) {
_state = RESPONSE_HEADERS;
String out;
_assembleHead(out, request->version());
size_t outLen = out.length();
size_t space = request->client()->space();
if (!_contentLength && space >= outLen) {
_writtenLength += request->client()->write(out.c_str(), outLen);
_state = RESPONSE_WAIT_ACK;
} else if (_contentLength && space >= outLen + _contentLength) {
out += _content;
outLen += _contentLength;
_writtenLength += request->client()->write(out.c_str(), outLen);
_state = RESPONSE_WAIT_ACK;
} else if (space && space < outLen) {
String partial = out.substring(0, space);
_content = out.substring(space) + _content;
_contentLength += outLen - space;
_writtenLength += request->client()->write(partial.c_str(), partial.length());
_state = RESPONSE_CONTENT;
} else if (space > outLen && space < (outLen + _contentLength)) {
size_t shift = space - outLen;
outLen += shift;
_sentLength += shift;
out += _content.substring(0, shift);
_content = _content.substring(shift);
_writtenLength += request->client()->write(out.c_str(), outLen);
_state = RESPONSE_CONTENT;
} else {
_content = out + _content;
_contentLength += outLen;
_state = RESPONSE_CONTENT;
}
}
size_t AsyncBasicResponse::_ack(AsyncWebServerRequest *request, size_t len, uint32_t time) {
(void)time;
_ackedLength += len;
if (_state == RESPONSE_CONTENT) {
size_t available = _contentLength - _sentLength;
size_t space = request->client()->space();
// we can fit in this packet
if (space > available) {
_writtenLength += request->client()->write(_content.c_str(), available);
_content = emptyString;
_state = RESPONSE_WAIT_ACK;
return available;
}
// send some data, the rest on ack
String out = _content.substring(0, space);
_content = _content.substring(space);
_sentLength += space;
_writtenLength += request->client()->write(out.c_str(), space);
return space;
} else if (_state == RESPONSE_WAIT_ACK) {
if (_ackedLength >= _writtenLength) {
_state = RESPONSE_END;
}
}
return 0;
}
/*
* Abstract Response
* */
AsyncAbstractResponse::AsyncAbstractResponse(AwsTemplateProcessor callback) : _callback(callback) {
// In case of template processing, we're unable to determine real response size
if (callback) {
_contentLength = 0;
_sendContentLength = false;
_chunked = true;
}
}
void AsyncAbstractResponse::_respond(AsyncWebServerRequest *request) {
addHeader(T_Connection, T_close, false);
_assembleHead(_head, request->version());
_state = RESPONSE_HEADERS;
_ack(request, 0, 0);
}
size_t AsyncAbstractResponse::_ack(AsyncWebServerRequest *request, size_t len, uint32_t time) {
(void)time;
if (!_sourceValid()) {
_state = RESPONSE_FAILED;
request->client()->close();
return 0;
}
#if ASYNCWEBSERVER_USE_CHUNK_INFLIGHT
// return a credit for each chunk of acked data (polls does not give any credits)
if (len) {
++_in_flight_credit;
}
// for chunked responses ignore acks if there are no _in_flight_credits left
if (_chunked && !_in_flight_credit) {
async_ws_log_d("(chunk) out of in-flight credits");
}
_in_flight -= (_in_flight > len) ? len : _in_flight;
// get the size of available sock space
#endif
_ackedLength += len;
size_t space = request->client()->space();
size_t headLen = _head.length();
if (_state == RESPONSE_HEADERS) {
if (space >= headLen) {
_state = RESPONSE_CONTENT;
space -= headLen;
} else {
String out = _head.substring(0, space);
_head = _head.substring(space);
_writtenLength += request->client()->write(out.c_str(), out.length());
#if ASYNCWEBSERVER_USE_CHUNK_INFLIGHT
_in_flight += out.length();
--_in_flight_credit; // take a credit
#endif
return out.length();
}
}
if (_state == RESPONSE_CONTENT) {
#if ASYNCWEBSERVER_USE_CHUNK_INFLIGHT
// for response data we need to control the queue and in-flight fragmentation. Sending small chunks could give low latency,
// but flood asynctcp's queue and fragment socket buffer space for large responses.
// Let's ignore polled acks and acks in case when we have more in-flight data then the available socket buff space.
// That way we could balance on having half the buffer in-flight while another half is filling up, while minimizing events in asynctcp q
if (_in_flight > space) {
// async_ws_log_d("defer user call %u/%u", _in_flight, space);
// take the credit back since we are ignoring this ack and rely on other inflight data
if (len) {
--_in_flight_credit;
}
return 0;
}
#endif
size_t outLen;
if (_chunked) {
if (space <= 8) {
return 0;
}
outLen = space;
} else if (!_sendContentLength) {
outLen = space;
} else {
outLen = ((_contentLength - _sentLength) > space) ? space : (_contentLength - _sentLength);
}
uint8_t *buf = (uint8_t *)malloc(outLen + headLen);
if (!buf) {
async_ws_log_e("Failed to allocate");
request->abort();
return 0;
}
if (headLen) {
memcpy(buf, _head.c_str(), _head.length());
}
size_t readLen = 0;
if (_chunked) {
// HTTP 1.1 allows leading zeros in chunk length. Or spaces may be added.
// See RFC2616 sections 2, 3.6.1.
readLen = _fillBufferAndProcessTemplates(buf + headLen + 6, outLen - 8);
if (readLen == RESPONSE_TRY_AGAIN) {
free(buf);
return 0;
}
outLen = sprintf((char *)buf + headLen, "%04x", readLen) + headLen;
buf[outLen++] = '\r';
buf[outLen++] = '\n';
outLen += readLen;
buf[outLen++] = '\r';
buf[outLen++] = '\n';
} else {
readLen = _fillBufferAndProcessTemplates(buf + headLen, outLen);
if (readLen == RESPONSE_TRY_AGAIN) {
free(buf);
return 0;
}
outLen = readLen + headLen;
}
if (headLen) {
_head = emptyString;
}
if (outLen) {
_writtenLength += request->client()->write((const char *)buf, outLen);
#if ASYNCWEBSERVER_USE_CHUNK_INFLIGHT
_in_flight += outLen;
--_in_flight_credit; // take a credit
#endif
}
if (_chunked) {
_sentLength += readLen;
} else {
_sentLength += outLen - headLen;
}
free(buf);
if ((_chunked && readLen == 0) || (!_sendContentLength && outLen == 0) || (!_chunked && _sentLength == _contentLength)) {
_state = RESPONSE_WAIT_ACK;
}
return outLen;
} else if (_state == RESPONSE_WAIT_ACK) {
if (!_sendContentLength || _ackedLength >= _writtenLength) {
_state = RESPONSE_END;
if (!_chunked && !_sendContentLength) {
request->client()->close(true);
}
}
}
return 0;
}
size_t AsyncAbstractResponse::_readDataFromCacheOrContent(uint8_t *data, const size_t len) {
// If we have something in cache, copy it to buffer
const size_t readFromCache = std::min(len, _cache.size());
if (readFromCache) {
memcpy(data, _cache.data(), readFromCache);
_cache.erase(_cache.begin(), _cache.begin() + readFromCache);
}
// If we need to read more...
const size_t needFromFile = len - readFromCache;
const size_t readFromContent = _fillBuffer(data + readFromCache, needFromFile);
return readFromCache + readFromContent;
}
size_t AsyncAbstractResponse::_fillBufferAndProcessTemplates(uint8_t *data, size_t len) {
if (!_callback) {
return _fillBuffer(data, len);
}
const size_t originalLen = len;
len = _readDataFromCacheOrContent(data, len);
// Now we've read 'len' bytes, either from cache or from file
// Search for template placeholders
uint8_t *pTemplateStart = data;
while ((pTemplateStart < &data[len]) && (pTemplateStart = (uint8_t *)memchr(pTemplateStart, TEMPLATE_PLACEHOLDER, &data[len - 1] - pTemplateStart + 1))
) { // data[0] ... data[len - 1]
uint8_t *pTemplateEnd =
(pTemplateStart < &data[len - 1]) ? (uint8_t *)memchr(pTemplateStart + 1, TEMPLATE_PLACEHOLDER, &data[len - 1] - pTemplateStart) : nullptr;
// temporary buffer to hold parameter name
uint8_t buf[TEMPLATE_PARAM_NAME_LENGTH + 1];
String paramName;
// If closing placeholder is found:
if (pTemplateEnd) {
// prepare argument to callback
const size_t paramNameLength = std::min((size_t)sizeof(buf) - 1, (size_t)(pTemplateEnd - pTemplateStart - 1));
if (paramNameLength) {
memcpy(buf, pTemplateStart + 1, paramNameLength);
buf[paramNameLength] = 0;
paramName = String(reinterpret_cast<char *>(buf));
} else { // double percent sign encountered, this is single percent sign escaped.
// remove the 2nd percent sign
memmove(pTemplateEnd, pTemplateEnd + 1, &data[len] - pTemplateEnd - 1);
len += _readDataFromCacheOrContent(&data[len - 1], 1) - 1;
++pTemplateStart;
}
} else if (&data[len - 1] - pTemplateStart + 1
< TEMPLATE_PARAM_NAME_LENGTH + 2) { // closing placeholder not found, check if it's in the remaining file data
memcpy(buf, pTemplateStart + 1, &data[len - 1] - pTemplateStart);
const size_t readFromCacheOrContent =
_readDataFromCacheOrContent(buf + (&data[len - 1] - pTemplateStart), TEMPLATE_PARAM_NAME_LENGTH + 2 - (&data[len - 1] - pTemplateStart + 1));
if (readFromCacheOrContent) {
pTemplateEnd = (uint8_t *)memchr(buf + (&data[len - 1] - pTemplateStart), TEMPLATE_PLACEHOLDER, readFromCacheOrContent);
if (pTemplateEnd) {
// prepare argument to callback
*pTemplateEnd = 0;
paramName = String(reinterpret_cast<char *>(buf));
// Copy remaining read-ahead data into cache
_cache.insert(_cache.begin(), pTemplateEnd + 1, buf + (&data[len - 1] - pTemplateStart) + readFromCacheOrContent);
pTemplateEnd = &data[len - 1];
} else // closing placeholder not found in file data, store found percent symbol as is and advance to the next position
{
// but first, store read file data in cache
_cache.insert(_cache.begin(), buf + (&data[len - 1] - pTemplateStart), buf + (&data[len - 1] - pTemplateStart) + readFromCacheOrContent);
++pTemplateStart;
}
} else { // closing placeholder not found in content data, store found percent symbol as is and advance to the next position
++pTemplateStart;
}
} else { // closing placeholder not found in content data, store found percent symbol as is and advance to the next position
++pTemplateStart;
}
if (paramName.length()) {
// call callback and replace with result.
// Everything in range [pTemplateStart, pTemplateEnd] can be safely replaced with parameter value.
// Data after pTemplateEnd may need to be moved.
// The first byte of data after placeholder is located at pTemplateEnd + 1.
// It should be located at pTemplateStart + numBytesCopied (to begin right after inserted parameter value).
const String paramValue(_callback(paramName));
const char *pvstr = paramValue.c_str();
const unsigned int pvlen = paramValue.length();
const size_t numBytesCopied = std::min(pvlen, static_cast<unsigned int>(&data[originalLen - 1] - pTemplateStart + 1));
// make room for param value
// 1. move extra data to cache if parameter value is longer than placeholder AND if there is no room to store
if ((pTemplateEnd + 1 < pTemplateStart + numBytesCopied) && (originalLen - (pTemplateStart + numBytesCopied - pTemplateEnd - 1) < len)) {
_cache.insert(_cache.begin(), &data[originalLen - (pTemplateStart + numBytesCopied - pTemplateEnd - 1)], &data[len]);
// 2. parameter value is longer than placeholder text, push the data after placeholder which not saved into cache further to the end
memmove(pTemplateStart + numBytesCopied, pTemplateEnd + 1, &data[originalLen] - pTemplateStart - numBytesCopied);
len = originalLen; // fix issue with truncated data, not sure if it has any side effects
} else if (pTemplateEnd + 1 != pTemplateStart + numBytesCopied) {
// 2. Either parameter value is shorter than placeholder text OR there is enough free space in buffer to fit.
// Move the entire data after the placeholder
memmove(pTemplateStart + numBytesCopied, pTemplateEnd + 1, &data[len] - pTemplateEnd - 1);
}
// 3. replace placeholder with actual value
memcpy(pTemplateStart, pvstr, numBytesCopied);
// If result is longer than buffer, copy the remainder into cache (this could happen only if placeholder text itself did not fit entirely in buffer)
if (numBytesCopied < pvlen) {
_cache.insert(_cache.begin(), pvstr + numBytesCopied, pvstr + pvlen);
} else if (pTemplateStart + numBytesCopied < pTemplateEnd + 1) { // result is copied fully; if result is shorter than placeholder text...
// there is some free room, fill it from cache
const size_t roomFreed = pTemplateEnd + 1 - pTemplateStart - numBytesCopied;
const size_t totalFreeRoom = originalLen - len + roomFreed;
len += _readDataFromCacheOrContent(&data[len - roomFreed], totalFreeRoom) - roomFreed;
} else { // result is copied fully; it is longer than placeholder text
const size_t roomTaken = pTemplateStart + numBytesCopied - pTemplateEnd - 1;
len = std::min(len + roomTaken, originalLen);
}
}
} // while(pTemplateStart)
return len;
}
/*
* File Response
* */
/**
* @brief Sets the content type based on the file path extension
*
* This method determines the appropriate MIME content type for a file based on its
* file extension. It supports both external content type functions (if available)
* and an internal mapping of common file extensions to their corresponding MIME types.
*
* @param path The file path string from which to extract the extension
* @note The method modifies the internal _contentType member variable
*/
void AsyncFileResponse::_setContentTypeFromPath(const String &path) {
#if HAVE_EXTERN_GET_Content_Type_FUNCTION
#ifndef ESP8266
extern const char *getContentType(const String &path);
#else
extern const __FlashStringHelper *getContentType(const String &path);
#endif
_contentType = getContentType(path);
#else
const char *cpath = path.c_str();
const char *dot = strrchr(cpath, '.');
if (!dot) {
_contentType = T_application_octet_stream;
return;
}
if (strcmp(dot, T__html) == 0 || strcmp(dot, T__htm) == 0) {
_contentType = T_text_html;
} else if (strcmp(dot, T__css) == 0) {
_contentType = T_text_css;
} else if (strcmp(dot, T__js) == 0 || strcmp(dot, T__mjs) == 0) {
_contentType = T_text_javascript;
} else if (strcmp(dot, T__json) == 0) {
_contentType = T_application_json;
} else if (strcmp(dot, T__png) == 0) {
_contentType = T_image_png;
} else if (strcmp(dot, T__ico) == 0) {
_contentType = T_image_x_icon;
} else if (strcmp(dot, T__svg) == 0) {
_contentType = T_image_svg_xml;
} else if (strcmp(dot, T__jpg) == 0) {
_contentType = T_image_jpeg;
} else if (strcmp(dot, T__webp) == 0) {
_contentType = T_image_webp;
} else if (strcmp(dot, T__avif) == 0) {
_contentType = T_image_avif;
} else if (strcmp(dot, T__gif) == 0) {
_contentType = T_image_gif;
} else if (strcmp(dot, T__woff2) == 0) {
_contentType = T_font_woff2;
} else if (strcmp(dot, T__woff) == 0) {
_contentType = T_font_woff;
} else if (strcmp(dot, T__ttf) == 0) {
_contentType = T_font_ttf;
} else if (strcmp(dot, T__xml) == 0) {
_contentType = T_text_xml;
} else if (strcmp(dot, T__pdf) == 0) {
_contentType = T_application_pdf;
} else if (strcmp(dot, T__mp4) == 0) {
_contentType = T_video_mp4;
} else if (strcmp(dot, T__opus) == 0) {
_contentType = T_audio_opus;
} else if (strcmp(dot, T__webm) == 0) {
_contentType = T_video_webm;
} else if (strcmp(dot, T__txt) == 0) {
_contentType = T_text_plain;
} else {
_contentType = T_application_octet_stream;
}
#endif
}
/**
* @brief Constructor for AsyncFileResponse that handles file serving with compression support
*
* This constructor creates an AsyncFileResponse object that can serve files from a filesystem,
* with automatic fallback to gzip-compressed versions if the original file is not found.
* It also handles ETag generation for caching and supports both inline and download modes.
*
* @param fs Reference to the filesystem object used to open files
* @param path Path to the file to be served (without compression extension)
* @param contentType MIME type of the file content (empty string for auto-detection)
* @param download If true, file will be served as download attachment; if false, as inline content
* @param callback Template processor callback for dynamic content processing
*/
AsyncFileResponse::AsyncFileResponse(FS &fs, const String &path, const char *contentType, bool download, AwsTemplateProcessor callback)
: AsyncAbstractResponse(callback) {
// Try to open the uncompressed version first
_content = fs.open(path, fs::FileOpenMode::read);
if (!_content.available()) {
// If not available try to open the compressed version (.gz)
String gzPath;
uint16_t pathLen = path.length();
gzPath.reserve(pathLen + 3);
gzPath.concat(path);
gzPath.concat(asyncsrv::T__gz);
_content = fs.open(gzPath, fs::FileOpenMode::read);
char serverETag[9];
if (AsyncWebServerRequest::_getEtag(_content, serverETag)) {
addHeader(T_Content_Encoding, T_gzip, false);
_callback = nullptr; // Unable to process zipped templates
_sendContentLength = true;
_chunked = false;
// Add ETag and cache headers
addHeader(T_ETag, serverETag, true);
addHeader(T_Cache_Control, T_no_cache, true);
_content.seek(0);
} else {
// File is corrupted or invalid
_code = 404;
return;
}
}
_contentLength = _content.size();
if (*contentType == '\0') {
_setContentTypeFromPath(path);
} else {
_contentType = contentType;
}
if (download) {
// Extract filename from path and set as download attachment
int filenameStart = path.lastIndexOf('/') + 1;
const char *filename = path.c_str() + filenameStart;
String buf;
buf.reserve(strlen(T_attachment) + strlen(filename) + 2);
buf = T_attachment;
buf += filename;
buf += "\"";
addHeader(T_Content_Disposition, buf, false);
} else {
// Serve file inline (display in browser)
addHeader(T_Content_Disposition, T_inline, false);
}
_code = 200;
}
AsyncFileResponse::AsyncFileResponse(File content, const String &path, const char *contentType, bool download, AwsTemplateProcessor callback)
: AsyncAbstractResponse(callback) {
_code = 200;
if (String(content.name()).endsWith(T__gz) && !path.endsWith(T__gz)) {
addHeader(T_Content_Encoding, T_gzip, false);
_callback = nullptr; // Unable to process gzipped templates
_sendContentLength = true;
_chunked = false;
}
_content = content;
_contentLength = _content.size();
if (*contentType == '\0') {
_setContentTypeFromPath(path);
} else {
_contentType = contentType;
}
if (download) {
// Extract filename from path and set as download attachment
int filenameStart = path.lastIndexOf('/') + 1;
const char *filename = path.c_str() + filenameStart;
String buf;
buf.reserve(strlen(T_attachment) + strlen(filename) + 2);
buf = T_attachment;
buf += filename;
buf += "\"";
addHeader(T_Content_Disposition, buf, false);
} else {
// Serve file inline (display in browser)
addHeader(T_Content_Disposition, T_inline, false);
}
}
size_t AsyncFileResponse::_fillBuffer(uint8_t *data, size_t len) {
return _content.read(data, len);
}
/*
* Stream Response
* */
AsyncStreamResponse::AsyncStreamResponse(Stream &stream, const char *contentType, size_t len, AwsTemplateProcessor callback) : AsyncAbstractResponse(callback) {
_code = 200;
_content = &stream;
_contentLength = len;
_contentType = contentType;
}
size_t AsyncStreamResponse::_fillBuffer(uint8_t *data, size_t len) {
size_t available = _content->available();
size_t outLen = (available > len) ? len : available;
size_t i;
for (i = 0; i < outLen; i++) {
data[i] = _content->read();
}
return outLen;
}
/*
* Callback Response
* */
AsyncCallbackResponse::AsyncCallbackResponse(const char *contentType, size_t len, AwsResponseFiller callback, AwsTemplateProcessor templateCallback)
: AsyncAbstractResponse(templateCallback) {
_code = 200;
_content = callback;
_contentLength = len;
if (!len) {
_sendContentLength = false;
}
_contentType = contentType;
_filledLength = 0;
}
size_t AsyncCallbackResponse::_fillBuffer(uint8_t *data, size_t len) {
size_t ret = _content(data, len, _filledLength);
if (ret != RESPONSE_TRY_AGAIN) {
_filledLength += ret;
}
return ret;
}
/*
* Chunked Response
* */
AsyncChunkedResponse::AsyncChunkedResponse(const char *contentType, AwsResponseFiller callback, AwsTemplateProcessor processorCallback)
: AsyncAbstractResponse(processorCallback) {
_code = 200;
_content = callback;
_contentLength = 0;
_contentType = contentType;
_sendContentLength = false;
_chunked = true;
_filledLength = 0;
}
size_t AsyncChunkedResponse::_fillBuffer(uint8_t *data, size_t len) {
size_t ret = _content(data, len, _filledLength);
if (ret != RESPONSE_TRY_AGAIN) {
_filledLength += ret;
}
return ret;
}
/*
* Progmem Response
* */
AsyncProgmemResponse::AsyncProgmemResponse(int code, const char *contentType, const uint8_t *content, size_t len, AwsTemplateProcessor callback)
: AsyncAbstractResponse(callback) {
_code = code;
_content = content;
_contentType = contentType;
_contentLength = len;
_readLength = 0;
}
size_t AsyncProgmemResponse::_fillBuffer(uint8_t *data, size_t len) {
size_t left = _contentLength - _readLength;
if (left > len) {
memcpy_P(data, _content + _readLength, len);
_readLength += len;
return len;
}
memcpy_P(data, _content + _readLength, left);
_readLength += left;
return left;
}
/*
* Response Stream (You can print/write/printf to it, up to the contentLen bytes)
* */
AsyncResponseStream::AsyncResponseStream(const char *contentType, size_t bufferSize) {
_code = 200;
_contentLength = 0;
_contentType = contentType;
// internal buffer will be null on allocation failure
_content = std::unique_ptr<cbuf>(new cbuf(bufferSize));
if (bufferSize && _content->size() < bufferSize) {
async_ws_log_e("Failed to allocate");
}
}
size_t AsyncResponseStream::_fillBuffer(uint8_t *buf, size_t maxLen) {
return _content->read((char *)buf, maxLen);
}
size_t AsyncResponseStream::write(const uint8_t *data, size_t len) {
if (_started()) {
return 0;
}
if (len > _content->room()) {
size_t needed = len - _content->room();
_content->resizeAdd(needed);
// log a warning if allocation failed, but do not return: keep writing the bytes we can
// with _content->write: if len is more than the available size in the buffer, only
// the available size will be written
if (len > _content->room()) {
async_ws_log_e("Failed to allocate");
}
}
size_t written = _content->write((const char *)data, len);
_contentLength += written;
return written;
}
size_t AsyncResponseStream::write(uint8_t data) {
return write(&data, 1);
}

195
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#include "ESPAsyncWebServer.h"
#include "WebHandlerImpl.h"
#if defined(ESP32) || defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350) || defined(LIBRETINY)
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#else
#error Platform not supported
#endif
using namespace asyncsrv;
bool ON_STA_FILTER(AsyncWebServerRequest *request) {
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
return WiFi.localIP() == request->client()->localIP();
#else
return false;
#endif
}
bool ON_AP_FILTER(AsyncWebServerRequest *request) {
#if SOC_WIFI_SUPPORTED || CONFIG_ESP_WIFI_REMOTE_ENABLED || LT_ARD_HAS_WIFI
return WiFi.localIP() != request->client()->localIP();
#else
return false;
#endif
}
#ifndef HAVE_FS_FILE_OPEN_MODE
const char *fs::FileOpenMode::read = "r";
const char *fs::FileOpenMode::write = "w";
const char *fs::FileOpenMode::append = "a";
#endif
AsyncWebServer::AsyncWebServer(uint16_t port) : _server(port) {
_catchAllHandler = new AsyncCallbackWebHandler();
_server.onClient(
[](void *s, AsyncClient *c) {
if (c == NULL) {
return;
}
c->setRxTimeout(3);
AsyncWebServerRequest *r = new AsyncWebServerRequest((AsyncWebServer *)s, c);
if (r == NULL) {
c->abort();
delete c;
}
},
this
);
}
AsyncWebServer::~AsyncWebServer() {
reset();
end();
delete _catchAllHandler;
_catchAllHandler = nullptr; // Prevent potential use-after-free
}
AsyncWebRewrite &AsyncWebServer::addRewrite(std::shared_ptr<AsyncWebRewrite> rewrite) {
_rewrites.emplace_back(rewrite);
return *_rewrites.back().get();
}
AsyncWebRewrite &AsyncWebServer::addRewrite(AsyncWebRewrite *rewrite) {
_rewrites.emplace_back(rewrite);
return *_rewrites.back().get();
}
bool AsyncWebServer::removeRewrite(AsyncWebRewrite *rewrite) {
return removeRewrite(rewrite->from().c_str(), rewrite->toUrl().c_str());
}
bool AsyncWebServer::removeRewrite(const char *from, const char *to) {
for (auto r = _rewrites.begin(); r != _rewrites.end(); ++r) {
if (r->get()->from() == from && r->get()->toUrl() == to) {
_rewrites.erase(r);
return true;
}
}
return false;
}
AsyncWebRewrite &AsyncWebServer::rewrite(const char *from, const char *to) {
_rewrites.emplace_back(std::make_shared<AsyncWebRewrite>(from, to));
return *_rewrites.back().get();
}
AsyncWebHandler &AsyncWebServer::addHandler(AsyncWebHandler *handler) {
_handlers.emplace_back(handler);
return *(_handlers.back().get());
}
bool AsyncWebServer::removeHandler(AsyncWebHandler *handler) {
for (auto i = _handlers.begin(); i != _handlers.end(); ++i) {
if (i->get() == handler) {
_handlers.erase(i);
return true;
}
}
return false;
}
void AsyncWebServer::begin() {
_server.setNoDelay(true);
_server.begin();
}
void AsyncWebServer::end() {
_server.end();
}
#if ASYNC_TCP_SSL_ENABLED
void AsyncWebServer::onSslFileRequest(AcSSlFileHandler cb, void *arg) {
_server.onSslFileRequest(cb, arg);
}
void AsyncWebServer::beginSecure(const char *cert, const char *key, const char *password) {
_server.beginSecure(cert, key, password);
}
#endif
void AsyncWebServer::_handleDisconnect(AsyncWebServerRequest *request) {
delete request;
}
void AsyncWebServer::_rewriteRequest(AsyncWebServerRequest *request) {
// the last rewrite that matches the request will be used
// we do not break the loop to allow for multiple rewrites to be applied and only the last one to be used (allows overriding)
for (const auto &r : _rewrites) {
if (r->match(request)) {
request->_url = r->toUrl();
request->_addGetParams(r->params());
}
}
}
void AsyncWebServer::_attachHandler(AsyncWebServerRequest *request) {
for (auto &h : _handlers) {
if (h->filter(request) && h->canHandle(request)) {
request->setHandler(h.get());
return;
}
}
// ESP_LOGD("AsyncWebServer", "No handler found for %s, using _catchAllHandler pointer: %p", request->url().c_str(), _catchAllHandler);
request->setHandler(_catchAllHandler);
}
AsyncCallbackWebHandler &AsyncWebServer::on(
const char *uri, WebRequestMethodComposite method, ArRequestHandlerFunction onRequest, ArUploadHandlerFunction onUpload, ArBodyHandlerFunction onBody
) {
AsyncCallbackWebHandler *handler = new AsyncCallbackWebHandler();
handler->setUri(uri);
handler->setMethod(method);
handler->onRequest(onRequest);
handler->onUpload(onUpload);
handler->onBody(onBody);
addHandler(handler);
return *handler;
}
AsyncStaticWebHandler &AsyncWebServer::serveStatic(const char *uri, fs::FS &fs, const char *path, const char *cache_control) {
AsyncStaticWebHandler *handler = new AsyncStaticWebHandler(uri, fs, path, cache_control);
addHandler(handler);
return *handler;
}
void AsyncWebServer::onNotFound(ArRequestHandlerFunction fn) {
_catchAllHandler->onRequest(fn);
}
void AsyncWebServer::onFileUpload(ArUploadHandlerFunction fn) {
_catchAllHandler->onUpload(fn);
}
void AsyncWebServer::onRequestBody(ArBodyHandlerFunction fn) {
_catchAllHandler->onBody(fn);
}
AsyncWebHandler &AsyncWebServer::catchAllHandler() const {
return *_catchAllHandler;
}
void AsyncWebServer::reset() {
_rewrites.clear();
_handlers.clear();
_catchAllHandler->onRequest(NULL);
_catchAllHandler->onUpload(NULL);
_catchAllHandler->onBody(NULL);
}

208
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#pragma once
namespace asyncsrv {
static constexpr const char *empty = "";
static constexpr const char *T__opaque = "\", opaque=\"";
static constexpr const char *T_100_CONTINUE = "100-continue";
static constexpr const char *T_13 = "13";
static constexpr const char *T_ACCEPT = "Accept";
static constexpr const char *T_Accept_Ranges = "Accept-Ranges";
static constexpr const char *T_attachment = "attachment; filename=\"";
static constexpr const char *T_AUTH = "Authorization";
static constexpr const char *T_auth_nonce = "\", qop=\"auth\", nonce=\"";
static constexpr const char *T_BASIC = "Basic";
static constexpr const char *T_BASIC_REALM = "Basic realm=\"";
static constexpr const char *T_BEARER = "Bearer";
static constexpr const char *T_BODY = "body";
static constexpr const char *T_Cache_Control = "Cache-Control";
static constexpr const char *T_chunked = "chunked";
static constexpr const char *T_close = "close";
static constexpr const char *T_cnonce = "cnonce";
static constexpr const char *T_Connection = "Connection";
static constexpr const char *T_Content_Disposition = "Content-Disposition";
static constexpr const char *T_Content_Encoding = "Content-Encoding";
static constexpr const char *T_Content_Length = "Content-Length";
static constexpr const char *T_Content_Type = "Content-Type";
static constexpr const char *T_Content_Location = "Content-Location";
static constexpr const char *T_Cookie = "Cookie";
static constexpr const char *T_CORS_ACAC = "Access-Control-Allow-Credentials";
static constexpr const char *T_CORS_ACAH = "Access-Control-Allow-Headers";
static constexpr const char *T_CORS_ACAM = "Access-Control-Allow-Methods";
static constexpr const char *T_CORS_ACAO = "Access-Control-Allow-Origin";
static constexpr const char *T_CORS_ACMA = "Access-Control-Max-Age";
static constexpr const char *T_CORS_O = "Origin";
static constexpr const char *T_data_ = "data: ";
static constexpr const char *T_Date = "Date";
static constexpr const char *T_DIGEST = "Digest";
static constexpr const char *T_DIGEST_ = "Digest ";
static constexpr const char *T_ETag = "ETag";
static constexpr const char *T_event_ = "event: ";
static constexpr const char *T_EXPECT = "Expect";
static constexpr const char *T_FALSE = "false";
static constexpr const char *T_filename = "filename";
static constexpr const char *T_gzip = "gzip";
static constexpr const char *T_Host = "host";
static constexpr const char *T_HTTP_1_0 = "HTTP/1.0";
static constexpr const char *T_HTTP_100_CONT = "HTTP/1.1 100 Continue\r\n\r\n";
static constexpr const char *T_id__ = "id: ";
static constexpr const char *T_IMS = "If-Modified-Since";
static constexpr const char *T_INM = "If-None-Match";
static constexpr const char *T_inline = "inline";
static constexpr const char *T_keep_alive = "keep-alive";
static constexpr const char *T_Last_Event_ID = "Last-Event-ID";
static constexpr const char *T_Last_Modified = "Last-Modified";
static constexpr const char *T_LOCATION = "Location";
static constexpr const char *T_LOGIN_REQ = "Login Required";
static constexpr const char *T_MULTIPART_ = "multipart/";
static constexpr const char *T_name = "name";
static constexpr const char *T_nc = "nc";
static constexpr const char *T_no_cache = "no-cache";
static constexpr const char *T_nonce = "nonce";
static constexpr const char *T_none = "none";
static constexpr const char *T_opaque = "opaque";
static constexpr const char *T_qop = "qop";
static constexpr const char *T_realm = "realm";
static constexpr const char *T_realm__ = "realm=\"";
static constexpr const char *T_response = "response";
static constexpr const char *T_retry_ = "retry: ";
static constexpr const char *T_retry_after = "Retry-After";
static constexpr const char *T_nn = "\n\n";
static constexpr const char *T_rn = "\r\n";
static constexpr const char *T_rnrn = "\r\n\r\n";
static constexpr const char *T_Server = "Server";
static constexpr const char *T_Transfer_Encoding = "Transfer-Encoding";
static constexpr const char *T_TRUE = "true";
static constexpr const char *T_UPGRADE = "Upgrade";
static constexpr const char *T_uri = "uri";
static constexpr const char *T_username = "username";
static constexpr const char *T_WS = "websocket";
static constexpr const char *T_WWW_AUTH = "WWW-Authenticate";
// HTTP Methods
static constexpr const char *T_ANY = "ANY";
static constexpr const char *T_GET = "GET";
static constexpr const char *T_POST = "POST";
static constexpr const char *T_PUT = "PUT";
static constexpr const char *T_DELETE = "DELETE";
static constexpr const char *T_PATCH = "PATCH";
static constexpr const char *T_HEAD = "HEAD";
static constexpr const char *T_OPTIONS = "OPTIONS";
static constexpr const char *T_UNKNOWN = "UNKNOWN";
// Req content types
static constexpr const char *T_RCT_NOT_USED = "RCT_NOT_USED";
static constexpr const char *T_RCT_DEFAULT = "RCT_DEFAULT";
static constexpr const char *T_RCT_HTTP = "RCT_HTTP";
static constexpr const char *T_RCT_WS = "RCT_WS";
static constexpr const char *T_RCT_EVENT = "RCT_EVENT";
static constexpr const char *T_ERROR = "ERROR";
// extensions & MIME-Types
static constexpr const char *T__avif = ".avif"; // AVIF: Highly compressed images. Compatible with all modern browsers.
static constexpr const char *T__csv = ".csv"; // CSV: Data logging and configuration
static constexpr const char *T__css = ".css"; // CSS: Styling for web interfaces
static constexpr const char *T__gif = ".gif"; // GIF: Simple animations. Legacy support
static constexpr const char *T__gz = ".gz"; // GZ: compressed files
static constexpr const char *T__htm = ".htm"; // HTM: Web interface files
static constexpr const char *T__html = ".html"; // HTML: Web interface files
static constexpr const char *T__ico = ".ico"; // ICO: Favicons, system icons. Legacy support
static constexpr const char *T__jpg = ".jpg"; // JPEG/JPG: Photos. Legacy support
static constexpr const char *T__js = ".js"; // JavaScript: Interactive functionality
static constexpr const char *T__json = ".json"; // JSON: Data exchange format
static constexpr const char *T__mp4 = ".mp4"; // MP4: Proprietary format. Worse compression than WEBM.
static constexpr const char *T__mjs = ".mjs"; // MJS: JavaScript module format
static constexpr const char *T__opus = ".opus"; // OPUS: High compression audio format
static constexpr const char *T__pdf = ".pdf"; // PDF: Universal document format
static constexpr const char *T__png = ".png"; // PNG: Icons, logos, transparency. Legacy support
static constexpr const char *T__svg = ".svg"; // SVG: Vector graphics, icons (scalable, tiny file sizes)
static constexpr const char *T__ttf = ".ttf"; // TTF: Font file. Legacy support
static constexpr const char *T__txt = ".txt"; // TXT: Plain text files
static constexpr const char *T__webm = ".webm"; // WebM: Video. Open source, optimized for web. Compatible with all modern browsers.
static constexpr const char *T__webp = ".webp"; // WebP: Highly compressed images. Compatible with all modern browsers.
static constexpr const char *T__woff = ".woff"; // WOFF: Font file. Legacy support
static constexpr const char *T__woff2 = ".woff2"; // WOFF2: Better compression. Compatible with all modern browsers.
static constexpr const char *T__xml = ".xml"; // XML: Configuration and data files
static constexpr const char *T_application_javascript = "application/javascript"; // Obsolete type for JavaScript
static constexpr const char *T_application_json = "application/json";
static constexpr const char *T_application_msgpack = "application/msgpack";
static constexpr const char *T_application_octet_stream = "application/octet-stream";
static constexpr const char *T_application_pdf = "application/pdf";
static constexpr const char *T_app_xform_urlencoded = "application/x-www-form-urlencoded";
static constexpr const char *T_audio_opus = "audio/opus";
static constexpr const char *T_font_ttf = "font/ttf";
static constexpr const char *T_font_woff = "font/woff";
static constexpr const char *T_font_woff2 = "font/woff2";
static constexpr const char *T_image_avif = "image/avif";
static constexpr const char *T_image_gif = "image/gif";
static constexpr const char *T_image_jpeg = "image/jpeg";
static constexpr const char *T_image_png = "image/png";
static constexpr const char *T_image_svg_xml = "image/svg+xml";
static constexpr const char *T_image_webp = "image/webp";
static constexpr const char *T_image_x_icon = "image/x-icon";
static constexpr const char *T_text_css = "text/css";
static constexpr const char *T_text_csv = "text/csv";
static constexpr const char *T_text_event_stream = "text/event-stream";
static constexpr const char *T_text_html = "text/html";
static constexpr const char *T_text_javascript = "text/javascript";
static constexpr const char *T_text_plain = "text/plain";
static constexpr const char *T_text_xml = "text/xml";
static constexpr const char *T_video_mp4 = "video/mp4";
static constexpr const char *T_video_webm = "video/webm";
// Response codes
static constexpr const char *T_HTTP_CODE_100 = "Continue";
static constexpr const char *T_HTTP_CODE_101 = "Switching Protocols";
static constexpr const char *T_HTTP_CODE_200 = "OK";
static constexpr const char *T_HTTP_CODE_201 = "Created";
static constexpr const char *T_HTTP_CODE_202 = "Accepted";
static constexpr const char *T_HTTP_CODE_203 = "Non-Authoritative Information";
static constexpr const char *T_HTTP_CODE_204 = "No Content";
static constexpr const char *T_HTTP_CODE_205 = "Reset Content";
static constexpr const char *T_HTTP_CODE_206 = "Partial Content";
static constexpr const char *T_HTTP_CODE_300 = "Multiple Choices";
static constexpr const char *T_HTTP_CODE_301 = "Moved Permanently";
static constexpr const char *T_HTTP_CODE_302 = "Found";
static constexpr const char *T_HTTP_CODE_303 = "See Other";
static constexpr const char *T_HTTP_CODE_304 = "Not Modified";
static constexpr const char *T_HTTP_CODE_305 = "Use Proxy";
static constexpr const char *T_HTTP_CODE_307 = "Temporary Redirect";
static constexpr const char *T_HTTP_CODE_400 = "Bad Request";
static constexpr const char *T_HTTP_CODE_401 = "Unauthorized";
static constexpr const char *T_HTTP_CODE_402 = "Payment Required";
static constexpr const char *T_HTTP_CODE_403 = "Forbidden";
static constexpr const char *T_HTTP_CODE_404 = "Not Found";
static constexpr const char *T_HTTP_CODE_405 = "Method Not Allowed";
static constexpr const char *T_HTTP_CODE_406 = "Not Acceptable";
static constexpr const char *T_HTTP_CODE_407 = "Proxy Authentication Required";
static constexpr const char *T_HTTP_CODE_408 = "Request Time-out";
static constexpr const char *T_HTTP_CODE_409 = "Conflict";
static constexpr const char *T_HTTP_CODE_410 = "Gone";
static constexpr const char *T_HTTP_CODE_411 = "Length Required";
static constexpr const char *T_HTTP_CODE_412 = "Precondition Failed";
static constexpr const char *T_HTTP_CODE_413 = "Request Entity Too Large";
static constexpr const char *T_HTTP_CODE_414 = "Request-URI Too Large";
static constexpr const char *T_HTTP_CODE_415 = "Unsupported Media Type";
static constexpr const char *T_HTTP_CODE_416 = "Requested Range Not Satisfiable";
static constexpr const char *T_HTTP_CODE_417 = "Expectation Failed";
static constexpr const char *T_HTTP_CODE_429 = "Too Many Requests";
static constexpr const char *T_HTTP_CODE_500 = "Internal Server Error";
static constexpr const char *T_HTTP_CODE_501 = "Not Implemented";
static constexpr const char *T_HTTP_CODE_502 = "Bad Gateway";
static constexpr const char *T_HTTP_CODE_503 = "Service Unavailable";
static constexpr const char *T_HTTP_CODE_504 = "Gateway Time-out";
static constexpr const char *T_HTTP_CODE_505 = "HTTP Version Not Supported";
static constexpr const char *T_HTTP_CODE_ANY = "Unknown code";
static constexpr const char *T_only_once_headers[] = {
T_Accept_Ranges, T_Content_Length, T_Content_Type, T_Connection, T_CORS_ACAC, T_CORS_ACAH, T_CORS_ACAM, T_CORS_ACAO,
T_CORS_ACMA, T_CORS_O, T_Date, T_DIGEST, T_ETag, T_Last_Modified, T_LOCATION, T_retry_after,
T_Transfer_Encoding, T_Content_Location, T_Server, T_WWW_AUTH
};
static constexpr size_t T_only_once_headers_len = sizeof(T_only_once_headers) / sizeof(T_only_once_headers[0]);
} // namespace asyncsrv