Add signaling to support ICE renomination.

webrtc/api/peerconnection.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 452 matching lines @@
   } else if (is_offer) {
     session_options->recv_video = false;
   } else {
     session_options->recv_video = true;
   }
 
   session_options->vad_enabled = rtc_options.voice_activity_detection;
   session_options->bundle_enabled = rtc_options.use_rtp_mux;
   for (auto& kv : session_options->transport_options) {
     kv.second.ice_restart = rtc_options.ice_restart;
+    kv.second.ice_renomination = rtc_options.ice_renomination;
   }
 
   return true;
 }
 
 bool ParseConstraintsForAnswer(const MediaConstraintsInterface* constraints,
                                cricket::MediaSessionOptions* session_options) {
   bool value = false;
   size_t mandatory_constraints_satisfied = 0;
 
@@ skipping 23 matching lines @@
   }
 
   if (FindConstraint(constraints, MediaConstraintsInterface::kUseRtpMux, &value,
                      &mandatory_constraints_satisfied)) {
     session_options->bundle_enabled = value;
   } else {
     // kUseRtpMux defaults to true according to spec.
     session_options->bundle_enabled = true;
   }
 
-  bool ice_restart = false;
-  if (FindConstraint(constraints, MediaConstraintsInterface::kIceRestart,
+  bool ice_renomination = false;
+  if (FindConstraint(constraints, MediaConstraintsInterface::kIceRenomination,
                      &value, &mandatory_constraints_satisfied)) {
-    // kIceRestart defaults to false according to spec.
-    ice_restart = true;
+    ice_renomination = value;
   }
   for (auto& kv : session_options->transport_options) {
-    kv.second.ice_restart = ice_restart;
+    kv.second.ice_renomination = ice_renomination;
   }
 
   if (!constraints) {
     return true;
   }
   return mandatory_constraints_satisfied == constraints->GetMandatory().size();
 }
 
 bool ParseIceServers(const PeerConnectionInterface::IceServers& servers,
                      cricket::ServerAddresses* stun_servers,
@@ skipping 446 matching lines @@
     options.voice_activity_detection = value;
   }
 
   if (FindConstraint(constraints,
                      MediaConstraintsInterface::kIceRestart,
                      &value,
                      &mandatory_constraints)) {
     options.ice_restart = value;
   }
 
+  if (FindConstraint(constraints, MediaConstraintsInterface::kIceRenomination,
+                     &value, &mandatory_constraints)) {
+    options.ice_renomination = value;
+  }
+
   if (FindConstraint(constraints,
                      MediaConstraintsInterface::kUseRtpMux,
                      &value,
                      &mandatory_constraints)) {
     options.use_rtp_mux = value;
   }
 
   CreateOffer(observer, options);
 }
 
@@ skipping 642 matching lines @@
   // people won't try to use them.
   if (HasDataChannels() && session_->data_channel_type() != cricket::DCT_RTP) {
     session_options->data_channel_type = session_->data_channel_type();
   }
 
   session_options->rtcp_cname = rtcp_cname_;
   session_options->crypto_options = factory_->options().crypto_options;
   return true;
 }
 
-void PeerConnection::FinishOptionsForAnswer(
+void PeerConnection::InitializeOptionsForAnswer(
     cricket::MediaSessionOptions* session_options) {
-  // TODO(deadbeef): Once we have transceivers, enumerate them here instead of
-  // ContentInfos.
+  session_options->recv_audio = false;
+  session_options->recv_video = false;
   if (session_->remote_description()) {
     // Initialize the transport_options map.
     for (const cricket::ContentInfo& content :
          session_->remote_description()->description()->contents()) {
       session_options->transport_options[content.name] =
           cricket::TransportOptions();
     }
   }
+}
+
+void PeerConnection::FinishOptionsForAnswer(
+    cricket::MediaSessionOptions* session_options) {
+  // TODO(deadbeef): Once we have transceivers, enumerate them here instead of
+  // ContentInfos.
   AddSendStreams(session_options, senders_, rtp_data_channels_);
   session_options->bundle_enabled =
       session_options->bundle_enabled &&
       (session_options->has_audio() || session_options->has_video() ||
        session_options->has_data());
 
   // RTP data channel is handled in MediaSessionOptions::AddStream. SCTP streams
   // are not signaled in the SDP so does not go through that path and must be
   // handled here.
   // Intentionally unset the data channel type for RTP data channel. Otherwise
   // the RTP data channels would be successfully negotiated by default and the
   // unit tests in WebRtcDataBrowserTest will fail when building with chromium.
   // We want to leave RTP data channels broken, so people won't try to use them.
   if (session_->data_channel_type() != cricket::DCT_RTP) {
     session_options->data_channel_type = session_->data_channel_type();
   }
   session_options->crypto_options = factory_->options().crypto_options;
 }
 
 bool PeerConnection::GetOptionsForAnswer(
     const MediaConstraintsInterface* constraints,
     cricket::MediaSessionOptions* session_options) {
-  session_options->recv_audio = false;
-  session_options->recv_video = false;
+  InitializeOptionsForAnswer(session_options);
   if (!ParseConstraintsForAnswer(constraints, session_options)) {
     return false;
   }
   session_options->rtcp_cname = rtcp_cname_;
 
   FinishOptionsForAnswer(session_options);
   return true;
 }
 
 bool PeerConnection::GetOptionsForAnswer(
     const RTCOfferAnswerOptions& options,
     cricket::MediaSessionOptions* session_options) {
-  session_options->recv_audio = false;
-  session_options->recv_video = false;
+  InitializeOptionsForAnswer(session_options);
   if (!ExtractMediaSessionOptions(options, false, session_options)) {
     return false;
   }
   session_options->rtcp_cname = rtcp_cname_;
 
   FinishOptionsForAnswer(session_options);
   return true;
 }
 
 void PeerConnection::RemoveTracks(cricket::MediaType media_type) {
@@ skipping 611 matching lines @@
 
 bool PeerConnection::StartRtcEventLog_w(rtc::PlatformFile file,
                                         int64_t max_size_bytes) {
   return media_controller_->call_w()->StartEventLog(file, max_size_bytes);
 }
 
 void PeerConnection::StopRtcEventLog_w() {
   media_controller_->call_w()->StopEventLog();
 }
 }  // namespace webrtc