tree b778af1a9fce13789b86f164c12c9519ed40930b
parent c2ebe21ba9085a52c4091d68b9cda0f0b6a294f5
author Bjorn Mellem <mellem@webrtc.org> 1541705002 -0800
committer Commit Bot <commit-bot@chromium.org> 1541724032 +0000

Implement data channels over media transport.

This changes PeerConnection to allow sending and receiving data channel
messages over the media transport.  If |use_media_transport_for_data_channels|
is set, PeerConnection will use a DCT_MEDIA_TRANSPORT mode for data
channels.

DCT_MEDIA_TRANSPORT acts exactly like DCT_SCTP within the data channel
and peer connection layers.  On the transport layer, it uses the media
transport instead of SCTP.  It appears as an RTP data channel in SDP
(just as media over media-transport appears as RTP in SDP).

Bug: webrtc:9719
Change-Id: I6a90142bd3f43668479c825ed02689dcd0d58b78
Reviewed-on: https://webrtc-review.googlesource.com/c/109740
Commit-Queue: Bjorn Mellem <mellem@webrtc.org>
Reviewed-by: Steve Anton <steveanton@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25575}