[Webkit-unassigned] [Bug 176665] New: RTCTransceiver.setDirection does not work

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=176665

            Bug ID: 176665
           Summary: RTCTransceiver.setDirection does not work
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fippo at appear.in
                CC: youennf at gmail.com

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.

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