sdp交换存在问题

lib/webrtcconnection/connection.go

@@ -77,13 +77,6 @@ func (c *Connection) Regist(offer *webrtc.SessionDescription) (*webrtc.SessionDe
 
 	rtc.OnICEConnectionStateChange(func(connectionState webrtc.ICEConnectionState) {
 		logrus.Debug("connection state has changed: ", connectionState.String())
-
-		switch connectionState {
-		case webrtc.ICEConnectionStateFailed:
-			fallthrough
-		case webrtc.ICEConnectionStateClosed:
-			rtc.Close()
-		}
 	})
 
 	for _, track := range c.stream.GetTracks() {
@@ -110,14 +103,12 @@ func (c *Connection) Regist(offer *webrtc.SessionDescription) (*webrtc.SessionDe
 		return nil, err
 	}
 
-	gatherComplete := webrtc.GatheringCompletePromise(rtc)
-
 	if err := rtc.SetLocalDescription(answer); err != nil {
 		return nil, err
 	}
 	logrus.Debug("answer set")
 
-	<-gatherComplete
+	<-webrtc.GatheringCompletePromise(rtc)
 
 	defer logrus.Debug("regist complete")
 	return rtc.LocalDescription(), nil