Can send ice candidates to server

lib/helpers/calls_helper.dart

@@ -4,6 +4,7 @@ import 'package:comunic/helpers/websocket_helper.dart';
 import 'package:comunic/lists/call_members_list.dart';
 import 'package:comunic/models/call_config.dart';
 import 'package:comunic/models/call_member.dart';
+import 'package:flutter_webrtc/rtc_ice_candidate.dart';
 import 'package:flutter_webrtc/rtc_session_description.dart';
 
 /// Calls helper
@@ -51,4 +52,14 @@ class CallsHelper {
         "type": "SDP",
         "data": jsonEncode(sdp.toMap())
       });
+
+  /// Send an IceCandidate
+  static Future<void> sendIceCandidate(
+          int callID, int peerID, RTCIceCandidate candidate) async =>
+      await ws("calls/signal", {
+        "callID": callID,
+        "peerID": peerID,
+        "type": "CANDIDATE",
+        "data": jsonEncode(candidate)
+      });
 }

lib/ui/screens/call_screen.dart

@@ -168,6 +168,10 @@ class _CallScreenState extends SafeState<CallScreen> {
 
       _peersConnections[memberID] = peerConnection;
 
+      // Register callbacks
+      peerConnection.onIceCandidate =
+          (c) => CallsHelper.sendIceCandidate(convID, memberID, c);
+
       // Request an offer to establish a peer connection
       await CallsHelper.requestOffer(convID, memberID);
     } catch (e, stack) {