Get calls configuration

lib/helpers/calls_helper.dart

@@ -1,4 +1,5 @@
 import 'package:comunic/helpers/websocket_helper.dart';
+import 'package:comunic/models/call_config.dart';
 
 /// Calls helper
 ///
@@ -7,9 +8,17 @@ import 'package:comunic/helpers/websocket_helper.dart';
 class CallsHelper {
   /// Join a call
   static Future<void> join(int convID) async =>
-      ws("calls/join", {"convID": convID});
+      await ws("calls/join", {"convID": convID});
 
   /// Leave a call
   static Future<void> leave(int convID) async =>
-      ws("calls/leave", {"convID": convID});
+      await ws("calls/leave", {"convID": convID});
+
+  /// Get calls configuration
+  static Future<CallConfig> getConfig() async {
+    final response = await ws("calls/config", {});
+    return CallConfig(
+      iceServers: response["iceServers"].cast<String>(),
+    );
+  }
 }

lib/models/call_config.dart

@@ -0,0 +1,13 @@
+import 'package:flutter/material.dart';
+
+/// Call configuration
+///
+/// @author Pierre Hubert
+
+class CallConfig {
+  final List<String> iceServers;
+
+  const CallConfig({
+    @required this.iceServers,
+  }) : assert(iceServers != null);
+}

lib/ui/screens/call_screen.dart

@@ -1,5 +1,6 @@
 import 'package:comunic/helpers/calls_helper.dart';
 import 'package:comunic/helpers/conversations_helper.dart';
+import 'package:comunic/models/call_config.dart';
 import 'package:comunic/models/conversation.dart';
 import 'package:comunic/ui/widgets/comunic_back_button_widget.dart';
 import 'package:comunic/ui/widgets/safe_state.dart';
@@ -30,6 +31,7 @@ class _CallScreenState extends SafeState<CallScreen> {
   // State properties
   Conversation _conversation;
   String _convName;
+  CallConfig _conf;
   var _error = false;
 
   @override
@@ -58,6 +60,9 @@ class _CallScreenState extends SafeState<CallScreen> {
 
       // Join the call
       await CallsHelper.join(convID);
+
+      // Get call configuration
+      _conf = await CallsHelper.getConfig();
     } catch (e, stack) {
       print("Could not initialize call! $e\n$stack");
       setState(() => _error = true);