Add PeerConnection IsClosed check.

webrtc/api/webrtcsession.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 435 matching lines @@
   if (cricket::IceCredentialsChanged(
           old_transport_desc->ice_ufrag, old_transport_desc->ice_pwd,
           new_transport_desc->ice_ufrag, new_transport_desc->ice_pwd)) {
     LOG(LS_INFO) << "Remote peer requests ICE restart for " << content_name
                  << ".";
     return true;
   }
   return false;
 }
 
-WebRtcSession::WebRtcSession(webrtc::MediaControllerInterface* media_controller,
-                             rtc::Thread* network_thread,
-                             rtc::Thread* worker_thread,
-                             rtc::Thread* signaling_thread,
-                             cricket::PortAllocator* port_allocator)
+WebRtcSession::WebRtcSession(
+    webrtc::MediaControllerInterface* media_controller,
+    rtc::Thread* network_thread,
+    rtc::Thread* worker_thread,
+    rtc::Thread* signaling_thread,
+    cricket::PortAllocator* port_allocator,
+    std::unique_ptr<cricket::TransportController> transport_controller)
     : worker_thread_(worker_thread),
       signaling_thread_(signaling_thread),
       // RFC 3264: The numeric value of the session id and version in the
       // o line MUST be representable with a "64 bit signed integer".
       // Due to this constraint session id |sid_| is max limited to LLONG_MAX.
       sid_(rtc::ToString(rtc::CreateRandomId64() & LLONG_MAX)),
-      transport_controller_(new cricket::TransportController(signaling_thread,
-                                                             network_thread,
-                                                             port_allocator)),
+      transport_controller_(std::move(transport_controller)),
       media_controller_(media_controller),
       channel_manager_(media_controller_->channel_manager()),
       ice_observer_(NULL),
       ice_connection_state_(PeerConnectionInterface::kIceConnectionNew),
       ice_connection_receiving_(true),
       older_version_remote_peer_(false),
       dtls_enabled_(false),
       data_channel_type_(cricket::DCT_NONE),
       metrics_observer_(NULL) {
   transport_controller_->SetIceRole(cricket::ICEROLE_CONTROLLED);
@@ skipping 1681 matching lines @@
                                                   ssl_cipher_suite);
   }
 }
 
 void WebRtcSession::OnSentPacket_w(const rtc::SentPacket& sent_packet) {
   RTC_DCHECK(worker_thread()->IsCurrent());
   media_controller_->call_w()->OnSentPacket(sent_packet);
 }
 
 }  // namespace webrtc