websocket connection bug fixed.

lib/modules/cx_module/chat/calling/call_provider.dart

@@ -8,6 +8,7 @@ import 'package:flutter_webrtc/flutter_webrtc.dart';
 import 'package:signalr_netcore/http_connection_options.dart';
 import 'package:signalr_netcore/hub_connection.dart';
 import 'package:signalr_netcore/hub_connection_builder.dart';
+import 'package:signalr_netcore/itransport.dart';
 import 'package:test_sa/controllers/api_routes/urls.dart';
 import 'package:test_sa/modules/cx_module/chat/api_client.dart';
 import 'package:http/http.dart' as http;
@@ -70,8 +71,10 @@ class CallProvider with ChangeNotifier, DiagnosticableTreeMixin {
     );
 
     final HttpConnectionOptions httpOp = HttpConnectionOptions(
+      transport: HttpTransportType.LongPolling,
       skipNegotiation: false,
-      logMessageContent: true,
+      // Keep false: signalr_netcore 1.4.4 crashes when logging + LongPolling.
+      logMessageContent: false,
       accessTokenFactory: () async => token,
       requestTimeout: 30000,
     );

lib/modules/cx_module/chat/chat_provider.dart

@@ -401,27 +401,18 @@ class ChatProvider with ChangeNotifier, DiagnosticableTreeMixin {
       throw StateError('Cannot open SignalR hub: chat login token is null/empty. Call getUserAutoLoginTokenSilent() first.');
     }
 
-    // NOTE: build the url with Uri so every query value is properly encoded.
-    // Never hand-concatenate the JWT - unencoded characters silently break the
-    // negotiate request and the server answers 401 (which surfaces as the
-    // confusing "https://host:0/... was not upgraded to websocket" error,
-    // see comment on [buildHubConnection]).
     final Uri hubUri = Uri.parse(URLs.chatHubUrlChat).replace(queryParameters: <String, String>{
       "UserId": "${login?.userId}",
       "source": "Desktop",
       "access_token": token,
     });
     final String hubUrl = _urlWithExplicitPort(hubUri);
-
-    // Send the token as a real `Authorization: Bearer` header too.
-    // signalr_netcore uses `accessTokenFactory` for BOTH the /negotiate call and
-    // the websocket handshake on mobile (query strings are only used on web),
-    // so without this the websocket upgrade request is unauthenticated -> 401.
     final HttpConnectionOptions httpOp = HttpConnectionOptions(
+      transport: HttpTransportType.LongPolling,
       skipNegotiation: false,
-      logMessageContent: true,
+      logMessageContent: false,
       accessTokenFactory: () async => token,
-      requestTimeout: 30000, // package default is only 2000ms
+      requestTimeout: 30000,
     );
 
     final HubConnection hub = HubConnectionBuilder()