Export PeerConnection for call.

Author: cloudwebrtc

lib/src/sip_ua_helper.dart

@@ -388,7 +388,9 @@ class Call {
   Call(this._id, this._session, this.state);
   final String _id;
   final RTCSession _session;
+
   String get id => _id;
+  RTCPeerConnection get peerConnection => _session.connection;
   CallStateEnum state;
 
   void answer(Map<String, Object> options, {MediaStream mediaStream = null}) {
@@ -435,6 +437,11 @@ class Call {
     _session.unmute(audio, video);
   }
 
+  void renegotiate(Map<String, dynamic> options) {
+    assert(_session != null, 'ERROR(umute): rtc session is invalid!');
+    _session.renegotiate(options);
+  }
+
   void sendDTMF(String tones, [Map<String, dynamic> options]) {
     assert(_session != null, 'ERROR(sendDTMF): rtc session is invalid!');
     _session.sendDTMF(tones, options);