@@ -27,7 +27,7 @@ class WHIP {
2727 final String url;
2828 String ? resourceURL;
2929 Map <String , String >? headers = {};
30- String videoCodec= 'vp8' ;
30+ String ? videoCodec;
3131 WHIP ({required this .url, this .headers});
3232
3333 Future <void > initlize (
@@ -40,7 +40,11 @@ class WHIP {
4040 this .videoCodec = videoCodec.toLowerCase ();
4141 }
4242 this .mode = mode;
43- pc = await createPeerConnection ({'sdpSemantics' : 'unified-plan' });
43+ pc = await createPeerConnection ({
44+ 'sdpSemantics' : 'unified-plan' ,
45+ 'bundlePolicy' : 'max-bundle' ,
46+ 'rtcpMuxPolicy' : 'require' ,
47+ });
4448 pc? .onIceCandidate = onicecandidate;
4549 pc? .onIceConnectionState = (state) {
4650 print ('state: ${state .toString ()}' );
@@ -49,12 +53,24 @@ class WHIP {
4953 switch (mode) {
5054 case WhipMode .kSend:
5155 stream? .getTracks ().forEach ((track) async {
52- await pc! .addTrack (track, stream);
56+ await pc! .addTransceiver (
57+ track: track,
58+ kind: track.kind == 'audio'
59+ ? RTCRtpMediaType .RTCRtpMediaTypeAudio
60+ : RTCRtpMediaType .RTCRtpMediaTypeVideo ,
61+ init: RTCRtpTransceiverInit (
62+ direction: TransceiverDirection .SendOnly , streams: [stream]));
5363 });
5464 break ;
5565 case WhipMode .kReceive:
56- await pc! .addTransceiver (kind: RTCRtpMediaType .RTCRtpMediaTypeAudio );
57- await pc! .addTransceiver (kind: RTCRtpMediaType .RTCRtpMediaTypeVideo );
66+ await pc! .addTransceiver (
67+ kind: RTCRtpMediaType .RTCRtpMediaTypeAudio ,
68+ init: RTCRtpTransceiverInit (
69+ direction: TransceiverDirection .RecvOnly ));
70+ await pc! .addTransceiver (
71+ kind: RTCRtpMediaType .RTCRtpMediaTypeVideo ,
72+ init: RTCRtpTransceiverInit (
73+ direction: TransceiverDirection .RecvOnly ));
5874 break ;
5975 }
6076 log.debug ('Initlize whip connection: mode = $mode , stream = ${stream ?.id }' );
@@ -64,8 +80,12 @@ class WHIP {
6480 Future <void > connect () async {
6581 try {
6682 setState (WhipState .kConnecting);
67- var desc = await pc! .createOffer ();
68- setPreferredCodec (desc, videoCodec: videoCodec);
83+ var desc = await pc! .createOffer ({});
84+ 85+ if (mode == WhipMode .kSend && videoCodec != null ) {
86+ setPreferredCodec (desc, videoCodec: videoCodec! );
87+ }
88+ 6989 await pc! .setLocalDescription (desc);
7090
7191 var offer = await pc! .getLocalDescription ();
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