Fix connessione RTMP in dev: riscrivi host Docker mediamtx per iOS.

Il simulatore non risolve «mediamtx»; l'app riscrive l'ingest verso 127.0.0.1 e docker-compose espone MEDIAMTX_RTMP_URL client-safe con messaggi d'errore RTMP più chiari.

Co-authored-by: Cursor <cursoragent@cursor.com>

native/ios/MatchLiveTv/Core/MediaUrl.swift

@@ -9,3 +9,39 @@ enum MediaUrl {
         return "\(base)/\(path)"
     }
 }
+
+/// Normalizza l'URL RTMP restituito dall'API per il dispositivo corrente.
+enum RtmpIngestUrl {
+    /// Host interni Docker non raggiungibili da simulatore / telefono → localhost o LAN.
+    private static let dockerInternalHosts: Set<String> = ["mediamtx", "host.docker.internal"]
+
+    static func resolveForDevice(_ urlString: String) -> String {
+        guard var components = URLComponents(string: urlString),
+              let host = components.host?.lowercased() else {
+            return urlString
+        }
+        guard dockerInternalHosts.contains(host) || shouldRewriteForLocalApi else {
+            return urlString
+        }
+        components.host = localIngestHost
+        if components.port == nil {
+            components.port = 1935
+        }
+        return components.url?.absoluteString ?? urlString
+    }
+
+    private static var shouldRewriteForLocalApi: Bool {
+        guard let host = URL(string: AppConfig.apiBaseUrl)?.host?.lowercased() else { return false }
+        return host == "localhost" || host == "127.0.0.1" || host.hasSuffix(".local")
+    }
+
+    /// Host RTMP per dev locale: simulatore iOS → 127.0.0.1; device fisico → stesso host dell'API.
+    private static var localIngestHost: String {
+        guard let apiHost = URL(string: AppConfig.apiBaseUrl)?.host else { return "127.0.0.1" }
+        let lower = apiHost.lowercased()
+        if lower == "localhost" || lower == "127.0.0.1" {
+            return "127.0.0.1"
+        }
+        return apiHost
+    }
+}

native/ios/MatchLiveTv/Core/UserFacingError.swift

@@ -10,10 +10,30 @@ enum UserFacingError {
 
     static func message(for error: Error, fallback: String = "Operazione non riuscita") -> String? {
         if isCancellation(error) { return nil }
+        if let rtmp = rtmpMessage(for: error) { return rtmp }
         if let api = error as? LocalizedError, let description = api.errorDescription, !description.isEmpty {
             return description
         }
         let text = error.localizedDescription
+        if text.contains("RTMPConnection.Error") || text.contains("RTMPHaishinKit") {
+            return "Connessione RTMP fallita. Verifica che MediaMTX sia raggiungibile (in dev: porta 1935 su localhost)."
+        }
         return text.isEmpty ? fallback : text
     }
+
+    private static func rtmpMessage(for error: Error) -> String? {
+        let text = String(describing: error)
+        let localized = error.localizedDescription
+        guard text.contains("RTMPConnection") || localized.contains("RTMPConnection") else { return nil }
+        if localized.contains("unsupportedCommand") || text.contains("unsupportedCommand") {
+            return "URL RTMP non valido. Controlla l'indirizzo di ingest dal server."
+        }
+        if localized.contains("connectionTimedOut") || text.contains("connectionTimedOut") {
+            return "Timeout connessione RTMP. Verifica rete e server MediaMTX (porta 1935)."
+        }
+        if localized.contains("socketError") || text.contains("socketError") {
+            return "Server RTMP non raggiungibile. In dev locale usa localhost:1935 (non l'host Docker «mediamtx»)."
+        }
+        return "Connessione RTMP fallita. Verifica rete e server streaming."
+    }
 }

native/ios/MatchLiveTv/UI/Broadcast/BroadcastScreen.swift

@@ -426,7 +426,7 @@ struct BroadcastScreen: View {
 
     private func broadcastConfig(for loaded: StreamSession, rtmpUrl: String) -> BroadcastConfig {
         BroadcastConfig(
-            rtmpUrl: rtmpUrl,
+            rtmpUrl: RtmpIngestUrl.resolveForDevice(rtmpUrl),
             width: 1280,
             height: 720,
             videoBitrate: loaded.targetBitrate,