Make the default value of rtcp-mux policy to required.

webrtc/api/peerconnectioninterface_unittest.cc

 /*
  *  Copyright 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 61 matching lines @@
     "o=- 0 0 IN IP4 127.0.0.1\r\n"
     "s=-\r\n"
     "t=0 0\r\n"
     "a=ice-ufrag:e5785931\r\n"
     "a=ice-pwd:36fb7878390db89481c1d46daa4278d8\r\n"
     "a=fingerprint:sha-256 58:AB:6E:F5:F1:E4:57:B7:E9:46:F4:86:04:28:F9:A7:ED:"
     "BD:AB:AE:40:EF:CE:9A:51:2C:2A:B1:9B:8B:78:84\r\n"
     "m=audio 1 RTP/AVPF 103\r\n"
     "a=mid:audio\r\n"
     "a=sendrecv\r\n"
+    "a=rtcp-mux\r\n"
     "a=rtpmap:103 ISAC/16000\r\n"
     "a=ssrc:1 cname:stream1\r\n"
     "a=ssrc:1 mslabel:stream1\r\n"
     "a=ssrc:1 label:audiotrack0\r\n"
     "m=video 1 RTP/AVPF 120\r\n"
     "a=mid:video\r\n"
     "a=sendrecv\r\n"
+    "a=rtcp-mux\r\n"
     "a=rtpmap:120 VP8/90000\r\n"
     "a=ssrc:2 cname:stream1\r\n"
     "a=ssrc:2 mslabel:stream1\r\n"
     "a=ssrc:2 label:videotrack0\r\n";
 
 // Reference SDP with a MediaStream with label "stream1" and audio track with
 // id "audio_1";
 static const char kSdpStringWithStream1AudioTrackOnly[] =
     "v=0\r\n"
     "o=- 0 0 IN IP4 127.0.0.1\r\n"
     "s=-\r\n"
     "t=0 0\r\n"
     "a=ice-ufrag:e5785931\r\n"
     "a=ice-pwd:36fb7878390db89481c1d46daa4278d8\r\n"
     "a=fingerprint:sha-256 58:AB:6E:F5:F1:E4:57:B7:E9:46:F4:86:04:28:F9:A7:ED:"
     "BD:AB:AE:40:EF:CE:9A:51:2C:2A:B1:9B:8B:78:84\r\n"
     "m=audio 1 RTP/AVPF 103\r\n"
     "a=mid:audio\r\n"
     "a=sendrecv\r\n"
     "a=rtpmap:103 ISAC/16000\r\n"
     "a=ssrc:1 cname:stream1\r\n"
     "a=ssrc:1 mslabel:stream1\r\n"
-    "a=ssrc:1 label:audiotrack0\r\n";
+    "a=ssrc:1 label:audiotrack0\r\n"
+    "a=rtcp-mux\r\n";
 
 // Reference SDP with two MediaStreams with label "stream1" and "stream2. Each
 // MediaStreams have one audio track and one video track.
 // This uses MSID.
 static const char kSdpStringWithStream1And2[] =
     "v=0\r\n"
     "o=- 0 0 IN IP4 127.0.0.1\r\n"
     "s=-\r\n"
     "t=0 0\r\n"
     "a=ice-ufrag:e5785931\r\n"
     "a=ice-pwd:36fb7878390db89481c1d46daa4278d8\r\n"
     "a=fingerprint:sha-256 58:AB:6E:F5:F1:E4:57:B7:E9:46:F4:86:04:28:F9:A7:ED:"
     "BD:AB:AE:40:EF:CE:9A:51:2C:2A:B1:9B:8B:78:84\r\n"
     "a=msid-semantic: WMS stream1 stream2\r\n"
     "m=audio 1 RTP/AVPF 103\r\n"
     "a=mid:audio\r\n"
     "a=sendrecv\r\n"
+    "a=rtcp-mux\r\n"
     "a=rtpmap:103 ISAC/16000\r\n"
     "a=ssrc:1 cname:stream1\r\n"
     "a=ssrc:1 msid:stream1 audiotrack0\r\n"
     "a=ssrc:3 cname:stream2\r\n"
     "a=ssrc:3 msid:stream2 audiotrack1\r\n"
     "m=video 1 RTP/AVPF 120\r\n"
     "a=mid:video\r\n"
     "a=sendrecv\r\n"
+    "a=rtcp-mux\r\n"
     "a=rtpmap:120 VP8/0\r\n"
     "a=ssrc:2 cname:stream1\r\n"
     "a=ssrc:2 msid:stream1 videotrack0\r\n"
     "a=ssrc:4 cname:stream2\r\n"
     "a=ssrc:4 msid:stream2 videotrack1\r\n";
 
 // Reference SDP without MediaStreams. Msid is not supported.
 static const char kSdpStringWithoutStreams[] =
     "v=0\r\n"
     "o=- 0 0 IN IP4 127.0.0.1\r\n"
     "s=-\r\n"
     "t=0 0\r\n"
     "a=ice-ufrag:e5785931\r\n"
     "a=ice-pwd:36fb7878390db89481c1d46daa4278d8\r\n"
     "a=fingerprint:sha-256 58:AB:6E:F5:F1:E4:57:B7:E9:46:F4:86:04:28:F9:A7:ED:"
     "BD:AB:AE:40:EF:CE:9A:51:2C:2A:B1:9B:8B:78:84\r\n"
     "m=audio 1 RTP/AVPF 103\r\n"
     "a=mid:audio\r\n"
     "a=sendrecv\r\n"
+    "a=rtcp-mux\r\n"
     "a=rtpmap:103 ISAC/16000\r\n"
     "m=video 1 RTP/AVPF 120\r\n"
     "a=mid:video\r\n"
     "a=sendrecv\r\n"
+    "a=rtcp-mux\r\n"
     "a=rtpmap:120 VP8/90000\r\n";
 
 // Reference SDP without MediaStreams. Msid is supported.
 static const char kSdpStringWithMsidWithoutStreams[] =
     "v=0\r\n"
     "o=- 0 0 IN IP4 127.0.0.1\r\n"
     "s=-\r\n"
     "t=0 0\r\n"
     "a=ice-ufrag:e5785931\r\n"
     "a=ice-pwd:36fb7878390db89481c1d46daa4278d8\r\n"
     "a=fingerprint:sha-256 58:AB:6E:F5:F1:E4:57:B7:E9:46:F4:86:04:28:F9:A7:ED:"
     "BD:AB:AE:40:EF:CE:9A:51:2C:2A:B1:9B:8B:78:84\r\n"
     "a=msid-semantic: WMS\r\n"
     "m=audio 1 RTP/AVPF 103\r\n"
     "a=mid:audio\r\n"
     "a=sendrecv\r\n"
+    "a=rtcp-mux\r\n"
     "a=rtpmap:103 ISAC/16000\r\n"
     "m=video 1 RTP/AVPF 120\r\n"
     "a=mid:video\r\n"
     "a=sendrecv\r\n"
+    "a=rtcp-mux\r\n"
     "a=rtpmap:120 VP8/90000\r\n";
 
 // Reference SDP without MediaStreams and audio only.
 static const char kSdpStringWithoutStreamsAudioOnly[] =
     "v=0\r\n"
     "o=- 0 0 IN IP4 127.0.0.1\r\n"
     "s=-\r\n"
     "t=0 0\r\n"
     "a=ice-ufrag:e5785931\r\n"
     "a=ice-pwd:36fb7878390db89481c1d46daa4278d8\r\n"
     "a=fingerprint:sha-256 58:AB:6E:F5:F1:E4:57:B7:E9:46:F4:86:04:28:F9:A7:ED:"
     "BD:AB:AE:40:EF:CE:9A:51:2C:2A:B1:9B:8B:78:84\r\n"
     "m=audio 1 RTP/AVPF 103\r\n"
     "a=mid:audio\r\n"
     "a=sendrecv\r\n"
+    "a=rtcp-mux\r\n"
     "a=rtpmap:103 ISAC/16000\r\n";
 
 // Reference SENDONLY SDP without MediaStreams. Msid is not supported.
 static const char kSdpStringSendOnlyWithoutStreams[] =
     "v=0\r\n"
     "o=- 0 0 IN IP4 127.0.0.1\r\n"
     "s=-\r\n"
     "t=0 0\r\n"
     "a=ice-ufrag:e5785931\r\n"
     "a=ice-pwd:36fb7878390db89481c1d46daa4278d8\r\n"
     "a=fingerprint:sha-256 58:AB:6E:F5:F1:E4:57:B7:E9:46:F4:86:04:28:F9:A7:ED:"
     "BD:AB:AE:40:EF:CE:9A:51:2C:2A:B1:9B:8B:78:84\r\n"
     "m=audio 1 RTP/AVPF 103\r\n"
     "a=mid:audio\r\n"
     "a=sendrecv\r\n"
     "a=sendonly\r\n"
+    "a=rtcp-mux\r\n"
     "a=rtpmap:103 ISAC/16000\r\n"
     "m=video 1 RTP/AVPF 120\r\n"
     "a=mid:video\r\n"
     "a=sendrecv\r\n"
     "a=sendonly\r\n"
+    "a=rtcp-mux\r\n"
     "a=rtpmap:120 VP8/90000\r\n";
 
 static const char kSdpStringInit[] =
     "v=0\r\n"
     "o=- 0 0 IN IP4 127.0.0.1\r\n"
     "s=-\r\n"
     "t=0 0\r\n"
     "a=ice-ufrag:e5785931\r\n"
     "a=ice-pwd:36fb7878390db89481c1d46daa4278d8\r\n"
     "a=fingerprint:sha-256 58:AB:6E:F5:F1:E4:57:B7:E9:46:F4:86:04:28:F9:A7:ED:"
     "BD:AB:AE:40:EF:CE:9A:51:2C:2A:B1:9B:8B:78:84\r\n"
     "a=msid-semantic: WMS\r\n";
 
 static const char kSdpStringAudio[] =
     "m=audio 1 RTP/AVPF 103\r\n"
     "a=mid:audio\r\n"
     "a=sendrecv\r\n"
+    "a=rtcp-mux\r\n"
     "a=rtpmap:103 ISAC/16000\r\n";
 
 static const char kSdpStringVideo[] =
     "m=video 1 RTP/AVPF 120\r\n"
     "a=mid:video\r\n"
     "a=sendrecv\r\n"
+    "a=rtcp-mux\r\n"
     "a=rtpmap:120 VP8/90000\r\n";
 
 static const char kSdpStringMs1Audio0[] =
     "a=ssrc:1 cname:stream1\r\n"
     "a=ssrc:1 msid:stream1 audiotrack0\r\n";
 
 static const char kSdpStringMs1Video0[] =
     "a=ssrc:2 cname:stream1\r\n"
     "a=ssrc:2 msid:stream1 videotrack0\r\n";
 
@@ skipping 2718 matching lines @@
   FakeConstraints updated_answer_c;
   answer_c.SetMandatoryReceiveAudio(false);
   answer_c.SetMandatoryReceiveVideo(false);
 
   cricket::MediaSessionOptions updated_answer_options;
   EXPECT_TRUE(
       ParseConstraintsForAnswer(&updated_answer_c, &updated_answer_options));
   EXPECT_TRUE(updated_answer_options.has_audio());
   EXPECT_TRUE(updated_answer_options.has_video());
 }