Bug 176665 – RTCRtpTransceiver.setDirection does not work

• Status: RESOLVED
• Resolution: INVALID
• Component: WebRTC

[Philipp Hancke]

take the following code:
```
var pc = new RTCPeerConnection();
navigator.mediaDevices.getUserMedia({audio: true})
.then(stream => {
  pc.addTrack(stream.getAudioTracks()[0], stream);
  pc.getTransceivers()[0].setDirection("sendonly");
  console.log("direction is", pc.getTransceivers()[0].direction);
  return pc.createOffer();
})
.then(offer => {
  console.log(offer.sdp);
})
```
setDirection works, the console log shows "direction is sendonly". However, the offer that is created has a a=sendrecv audio mline.

Similiarly for making a call on https://webrtc.github.io/samples/src/content/peerconnection/pc1/, calling setDirection and then creating a subsequent offer.

[Philipp Hancke]

no longer applies presumably due to the switch away from plan-b