TransportController refactoring

talk/session/media/channel_unittest.cc

 /*
  * libjingle
  * Copyright 2009 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 15 matching lines @@
  */
 
 #include "talk/media/base/fakemediaengine.h"
 #include "talk/media/base/fakertp.h"
 #include "talk/media/base/fakescreencapturerfactory.h"
 #include "talk/media/base/fakevideocapturer.h"
 #include "talk/media/base/mediachannel.h"
 #include "talk/media/base/rtpdump.h"
 #include "talk/media/base/screencastid.h"
 #include "talk/media/base/testutils.h"
-#include "webrtc/p2p/base/fakesession.h"
+#include "webrtc/p2p/base/faketransportcontroller.h"
 #include "talk/session/media/channel.h"
 #include "talk/session/media/typingmonitor.h"
 #include "webrtc/base/fileutils.h"
 #include "webrtc/base/gunit.h"
 #include "webrtc/base/helpers.h"
 #include "webrtc/base/logging.h"
 #include "webrtc/base/pathutils.h"
 #include "webrtc/base/signalthread.h"
 #include "webrtc/base/ssladapter.h"
 #include "webrtc/base/sslidentity.h"
@@ skipping 74 matching lines @@
 
 // Base class for Voice/VideoChannel tests
 template<class T>
 class ChannelTest : public testing::Test, public sigslot::has_slots<> {
  public:
   enum Flags { RTCP = 0x1, RTCP_MUX = 0x2, SECURE = 0x4, SSRC_MUX = 0x8,
                DTLS = 0x10 };
 
   ChannelTest(const uint8* rtp_data, int rtp_len,
               const uint8* rtcp_data, int rtcp_len)
-      : session1_(true),
-        session2_(false),
+      : transport_controller1_(true),
+        transport_controller2_(false),
         media_channel1_(NULL),
         media_channel2_(NULL),
         rtp_packet_(reinterpret_cast<const char*>(rtp_data), rtp_len),
         rtcp_packet_(reinterpret_cast<const char*>(rtcp_data), rtcp_len),
         media_info_callbacks1_(),
         media_info_callbacks2_(),
         mute_callback_recved_(false),
         mute_callback_value_(false),
         ssrc_(0),
         error_(T::MediaChannel::ERROR_NONE) {
@@ skipping 19 matching lines @@
                       rtc::Thread* thread) {
     CreateChannels(new typename T::MediaChannel(NULL),
                    new typename T::MediaChannel(NULL),
                    flags, thread);
   }
   void CreateChannels(
       typename T::MediaChannel* ch1, typename T::MediaChannel* ch2,
       int flags1, int flags2, rtc::Thread* thread) {
     media_channel1_ = ch1;
     media_channel2_ = ch2;
-    channel1_.reset(CreateChannel(thread, &media_engine_, ch1, &session1_,
-                                  (flags1 & RTCP) != 0));
-    channel2_.reset(CreateChannel(thread, &media_engine_, ch2, &session2_,
-                                  (flags2 & RTCP) != 0));
+    channel1_.reset(CreateChannel(
+        thread, &media_engine_, ch1, &transport_controller1_,
+        (flags1 & RTCP) != 0));
+    channel2_.reset(CreateChannel(
+        thread, &media_engine_, ch2, &transport_controller2_,
+        (flags2 & RTCP) != 0));
     channel1_->SignalMediaMonitor.connect(
         this, &ChannelTest<T>::OnMediaMonitor);
     channel2_->SignalMediaMonitor.connect(
         this, &ChannelTest<T>::OnMediaMonitor);
     channel1_->SignalMediaError.connect(
         this, &ChannelTest<T>::OnMediaChannelError);
     channel2_->SignalMediaError.connect(
         this, &ChannelTest<T>::OnMediaChannelError);
     channel1_->SignalAutoMuted.connect(
         this, &ChannelTest<T>::OnMediaMuted);
     if ((flags1 & DTLS) && (flags2 & DTLS)) {
       flags1 = (flags1 & ~SECURE);
       flags2 = (flags2 & ~SECURE);
     }
     CreateContent(flags1, kPcmuCodec, kH264Codec,
                   &local_media_content1_);
     CreateContent(flags2, kPcmuCodec, kH264Codec,
                   &local_media_content2_);
     CopyContent(local_media_content1_, &remote_media_content1_);
     CopyContent(local_media_content2_, &remote_media_content2_);
 
     if (flags1 & DTLS) {
       identity1_.reset(rtc::SSLIdentity::Generate("session1"));
-      session1_.set_ssl_identity(identity1_.get());
+      transport_controller1_.SetIdentity(identity1_.get()->GetReference());
     }
     if (flags2 & DTLS) {
       identity2_.reset(rtc::SSLIdentity::Generate("session2"));
-      session2_.set_ssl_identity(identity2_.get());
+      transport_controller2_.SetIdentity(identity2_.get()->GetReference());
     }
 
     // Add stream information (SSRC) to the local content but not to the remote
     // content. This means that we per default know the SSRC of what we send but
     // not what we receive.
     AddLegacyStreamInContent(kSsrc1, flags1, &local_media_content1_);
     AddLegacyStreamInContent(kSsrc2, flags2, &local_media_content2_);
 
     // If SSRC_MUX is used we also need to know the SSRC of the incoming stream.
     if (flags1 & SSRC_MUX) {
       AddLegacyStreamInContent(kSsrc1, flags1, &remote_media_content1_);
     }
     if (flags2 & SSRC_MUX) {
       AddLegacyStreamInContent(kSsrc2, flags2, &remote_media_content2_);
     }
   }
 
   void CreateChannels(
       typename T::MediaChannel* ch1, typename T::MediaChannel* ch2,
       int flags, rtc::Thread* thread) {
     media_channel1_ = ch1;
     media_channel2_ = ch2;
 
-    channel1_.reset(CreateChannel(thread, &media_engine_, ch1, &session1_,
-                                  (flags & RTCP) != 0));
-    channel2_.reset(CreateChannel(thread, &media_engine_, ch2, &session1_,
-                                  (flags & RTCP) != 0));
+    channel1_.reset(CreateChannel(
+        thread, &media_engine_, ch1, &transport_controller1_,
+        (flags & RTCP) != 0));
+    channel2_.reset(CreateChannel(
+        thread, &media_engine_, ch2, &transport_controller1_,
+        (flags & RTCP) != 0));
     channel1_->SignalMediaMonitor.connect(
         this, &ChannelTest<T>::OnMediaMonitor);
     channel2_->SignalMediaMonitor.connect(
         this, &ChannelTest<T>::OnMediaMonitor);
     channel2_->SignalMediaError.connect(
         this, &ChannelTest<T>::OnMediaChannelError);
     CreateContent(flags, kPcmuCodec, kH264Codec,
                   &local_media_content1_);
     CreateContent(flags, kPcmuCodec, kH264Codec,
                   &local_media_content2_);
     CopyContent(local_media_content1_, &remote_media_content1_);
     CopyContent(local_media_content2_, &remote_media_content2_);
     // Add stream information (SSRC) to the local content but not to the remote
     // content. This means that we per default know the SSRC of what we send but
     // not what we receive.
     AddLegacyStreamInContent(kSsrc1, flags, &local_media_content1_);
     AddLegacyStreamInContent(kSsrc2, flags, &local_media_content2_);
 
     // If SSRC_MUX is used we also need to know the SSRC of the incoming stream.
     if (flags & SSRC_MUX) {
       AddLegacyStreamInContent(kSsrc1, flags, &remote_media_content1_);
       AddLegacyStreamInContent(kSsrc2, flags, &remote_media_content2_);
     }
   }
 
-  typename T::Channel* CreateChannel(rtc::Thread* thread,
-                                     cricket::MediaEngineInterface* engine,
-                                     typename T::MediaChannel* ch,
-                                     cricket::BaseSession* session,
-                                     bool rtcp) {
+  typename T::Channel* CreateChannel(
+      rtc::Thread* thread,
+      cricket::MediaEngineInterface* engine,
+      typename T::MediaChannel* ch,
+      cricket::TransportController* transport_controller,
+      bool rtcp) {
     typename T::Channel* channel = new typename T::Channel(
-        thread, engine, ch, session, cricket::CN_AUDIO, rtcp);
+        thread, engine, ch, transport_controller, cricket::CN_AUDIO, rtcp);
     if (!channel->Init()) {
       delete channel;
       channel = NULL;
     }
     return channel;
   }
 
   bool SendInitiate() {
     bool result = channel1_->SetLocalContent(&local_media_content1_,
                                              CA_OFFER, NULL);
     if (result) {
       channel1_->Enable(true);
       result = channel2_->SetRemoteContent(&remote_media_content1_,
                                            CA_OFFER, NULL);
       if (result) {
-        session1_.Connect(&session2_);
+        transport_controller1_.Connect(&transport_controller2_);
 
         result = channel2_->SetLocalContent(&local_media_content2_,
                                             CA_ANSWER, NULL);
       }
     }
     return result;
   }
 
   bool SendAccept() {
     channel2_->Enable(true);
@@ skipping 12 matching lines @@
     return result;
   }
 
   bool SendProvisionalAnswer() {
     bool result = channel2_->SetLocalContent(&local_media_content2_,
                                              CA_PRANSWER, NULL);
     if (result) {
       channel2_->Enable(true);
       result = channel1_->SetRemoteContent(&remote_media_content2_,
                                            CA_PRANSWER, NULL);
-      session1_.Connect(&session2_);
+      transport_controller1_.Connect(&transport_controller2_);
     }
     return result;
   }
 
   bool SendFinalAnswer() {
     bool result = channel2_->SetLocalContent(&local_media_content2_,
                                              CA_ANSWER, NULL);
     if (result)
       result = channel1_->SetRemoteContent(&remote_media_content2_,
                                            CA_ANSWER, NULL);
     return result;
   }
 
   bool SendTerminate() {
     channel1_.reset();
     channel2_.reset();
     return true;
   }
 
   bool AddStream1(int id) {
     return channel1_->AddRecvStream(cricket::StreamParams::CreateLegacy(id));
   }
   bool RemoveStream1(int id) {
     return channel1_->RemoveRecvStream(id);
   }
 
+  // Calling "_w" method here is ok since we only use one thread for this test
   cricket::FakeTransport* GetTransport1() {
-    return session1_.GetTransport(channel1_->content_name());
+    return transport_controller1_.GetTransport_w(channel1_->content_name());
   }
   cricket::FakeTransport* GetTransport2() {
-    return session2_.GetTransport(channel2_->content_name());
+    return transport_controller2_.GetTransport_w(channel2_->content_name());
   }
 
   bool SendRtp1() {
     return media_channel1_->SendRtp(rtp_packet_.c_str(),
                                     static_cast<int>(rtp_packet_.size()));
   }
   bool SendRtp2() {
     return media_channel2_->SendRtp(rtp_packet_.c_str(),
                                     static_cast<int>(rtp_packet_.size()));
   }
@@ skipping 463 matching lines @@
     CreateChannels(0, 0);
     typename T::Content content1;
     CreateContent(0, kPcmuCodec, kH264Codec, &content1);
     content1.AddStream(stream1);
     EXPECT_TRUE(channel1_->SetLocalContent(&content1, CA_OFFER, NULL));
     EXPECT_TRUE(channel1_->Enable(true));
     EXPECT_EQ(1u, media_channel1_->send_streams().size());
 
     EXPECT_TRUE(channel2_->SetRemoteContent(&content1, CA_OFFER, NULL));
     EXPECT_EQ(1u, media_channel2_->recv_streams().size());
-    session1_.Connect(&session2_);
+    transport_controller1_.Connect(&transport_controller2_);
 
     // Channel 2 do not send anything.
     typename T::Content content2;
     CreateContent(0, kPcmuCodec, kH264Codec, &content2);
     EXPECT_TRUE(channel1_->SetRemoteContent(&content2, CA_ANSWER, NULL));
     EXPECT_EQ(0u, media_channel1_->recv_streams().size());
     EXPECT_TRUE(channel2_->SetLocalContent(&content2, CA_ANSWER, NULL));
     EXPECT_TRUE(channel2_->Enable(true));
     EXPECT_EQ(0u, media_channel2_->send_streams().size());
 
@@ skipping 42 matching lines @@
     EXPECT_TRUE(media_channel1_->playout());
     EXPECT_FALSE(media_channel1_->sending());
     EXPECT_TRUE(channel2_->SetRemoteContent(&local_media_content1_,
                                             CA_OFFER, NULL));
     EXPECT_FALSE(media_channel2_->playout());
     EXPECT_FALSE(media_channel2_->sending());
     EXPECT_TRUE(channel2_->SetLocalContent(&local_media_content2_,
                                            CA_ANSWER, NULL));
     EXPECT_FALSE(media_channel2_->playout());
     EXPECT_FALSE(media_channel2_->sending());
-    session1_.Connect(&session2_);
+    transport_controller1_.Connect(&transport_controller2_);
     EXPECT_TRUE(media_channel1_->playout());
     EXPECT_FALSE(media_channel1_->sending());
     EXPECT_FALSE(media_channel2_->playout());
     EXPECT_FALSE(media_channel2_->sending());
     EXPECT_TRUE(channel2_->Enable(true));
     EXPECT_TRUE(media_channel2_->playout());
     EXPECT_TRUE(media_channel2_->sending());
     EXPECT_TRUE(channel1_->SetRemoteContent(&local_media_content2_,
                                             CA_ANSWER, NULL));
     EXPECT_TRUE(media_channel1_->playout());
@@ skipping 37 matching lines @@
     EXPECT_TRUE(channel2_->Enable(true));
     EXPECT_FALSE(media_channel1_->playout());
     EXPECT_FALSE(media_channel1_->sending());
     EXPECT_FALSE(media_channel2_->playout());
     EXPECT_FALSE(media_channel2_->sending());
 
     EXPECT_TRUE(channel1_->SetLocalContent(&content1, CA_OFFER, NULL));
     EXPECT_TRUE(channel2_->SetRemoteContent(&content1, CA_OFFER, NULL));
     EXPECT_TRUE(channel2_->SetLocalContent(&content2, CA_PRANSWER, NULL));
     EXPECT_TRUE(channel1_->SetRemoteContent(&content2, CA_PRANSWER, NULL));
-    session1_.Connect(&session2_);
+    transport_controller1_.Connect(&transport_controller2_);
 
     EXPECT_TRUE(media_channel1_->playout());
     EXPECT_FALSE(media_channel1_->sending());  // remote InActive
     EXPECT_FALSE(media_channel2_->playout());  // local InActive
     EXPECT_FALSE(media_channel2_->sending());  // local InActive
 
     // Update |content2| to be RecvOnly.
     content2.set_direction(cricket::MD_RECVONLY);
     EXPECT_TRUE(channel2_->SetLocalContent(&content2, CA_PRANSWER, NULL));
     EXPECT_TRUE(channel1_->SetRemoteContent(&content2, CA_PRANSWER, NULL));
@@ skipping 49 matching lines @@
     EXPECT_TRUE(SendInitiate());
     EXPECT_TRUE(SendAccept());
     EXPECT_TRUE(SendTerminate());
   }
 
   // Send voice RTP data to the other side and ensure it gets there.
   void SendRtpToRtp() {
     CreateChannels(0, 0);
     EXPECT_TRUE(SendInitiate());
     EXPECT_TRUE(SendAccept());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(1U, GetTransport1()->channels().size());
     EXPECT_EQ(1U, GetTransport2()->channels().size());
     EXPECT_TRUE(SendRtp1());
     EXPECT_TRUE(SendRtp2());
     EXPECT_TRUE(CheckRtp1());
     EXPECT_TRUE(CheckRtp2());
     EXPECT_TRUE(CheckNoRtp1());
     EXPECT_TRUE(CheckNoRtp2());
   }
 
   // Check that RTCP is not transmitted if both sides don't support RTCP.
   void SendNoRtcpToNoRtcp() {
     CreateChannels(0, 0);
     EXPECT_TRUE(SendInitiate());
     EXPECT_TRUE(SendAccept());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(1U, GetTransport1()->channels().size());
     EXPECT_EQ(1U, GetTransport2()->channels().size());
     EXPECT_FALSE(SendRtcp1());
     EXPECT_FALSE(SendRtcp2());
     EXPECT_TRUE(CheckNoRtcp1());
     EXPECT_TRUE(CheckNoRtcp2());
   }
 
   // Check that RTCP is not transmitted if the callee doesn't support RTCP.
   void SendNoRtcpToRtcp() {
     CreateChannels(0, RTCP);
     EXPECT_TRUE(SendInitiate());
     EXPECT_TRUE(SendAccept());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(1U, GetTransport1()->channels().size());
     EXPECT_EQ(2U, GetTransport2()->channels().size());
     EXPECT_FALSE(SendRtcp1());
     EXPECT_FALSE(SendRtcp2());
     EXPECT_TRUE(CheckNoRtcp1());
     EXPECT_TRUE(CheckNoRtcp2());
   }
 
   // Check that RTCP is not transmitted if the caller doesn't support RTCP.
   void SendRtcpToNoRtcp() {
     CreateChannels(RTCP, 0);
     EXPECT_TRUE(SendInitiate());
     EXPECT_TRUE(SendAccept());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(2U, GetTransport1()->channels().size());
     EXPECT_EQ(1U, GetTransport2()->channels().size());
     EXPECT_FALSE(SendRtcp1());
     EXPECT_FALSE(SendRtcp2());
     EXPECT_TRUE(CheckNoRtcp1());
     EXPECT_TRUE(CheckNoRtcp2());
   }
 
   // Check that RTCP is transmitted if both sides support RTCP.
   void SendRtcpToRtcp() {
     CreateChannels(RTCP, RTCP);
     EXPECT_TRUE(SendInitiate());
     EXPECT_TRUE(SendAccept());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(2U, GetTransport1()->channels().size());
     EXPECT_EQ(2U, GetTransport2()->channels().size());
     EXPECT_TRUE(SendRtcp1());
     EXPECT_TRUE(SendRtcp2());
     EXPECT_TRUE(CheckRtcp1());
     EXPECT_TRUE(CheckRtcp2());
     EXPECT_TRUE(CheckNoRtcp1());
     EXPECT_TRUE(CheckNoRtcp2());
   }
 
   // Check that RTCP is transmitted if only the initiator supports mux.
   void SendRtcpMuxToRtcp() {
     CreateChannels(RTCP | RTCP_MUX, RTCP);
     EXPECT_TRUE(SendInitiate());
     EXPECT_TRUE(SendAccept());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(2U, GetTransport1()->channels().size());
     EXPECT_EQ(2U, GetTransport2()->channels().size());
     EXPECT_TRUE(SendRtcp1());
     EXPECT_TRUE(SendRtcp2());
     EXPECT_TRUE(CheckRtcp1());
     EXPECT_TRUE(CheckRtcp2());
     EXPECT_TRUE(CheckNoRtcp1());
     EXPECT_TRUE(CheckNoRtcp2());
   }
 
   // Check that RTP and RTCP are transmitted ok when both sides support mux.
   void SendRtcpMuxToRtcpMux() {
     CreateChannels(RTCP | RTCP_MUX, RTCP | RTCP_MUX);
     EXPECT_TRUE(SendInitiate());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(2U, GetTransport1()->channels().size());
     EXPECT_EQ(1U, GetTransport2()->channels().size());
     EXPECT_TRUE(SendAccept());
     EXPECT_EQ(1U, GetTransport1()->channels().size());
     EXPECT_TRUE(SendRtp1());
     EXPECT_TRUE(SendRtp2());
     EXPECT_TRUE(SendRtcp1());
     EXPECT_TRUE(SendRtcp2());
     EXPECT_TRUE(CheckRtp1());
     EXPECT_TRUE(CheckRtp2());
     EXPECT_TRUE(CheckNoRtp1());
     EXPECT_TRUE(CheckNoRtp2());
     EXPECT_TRUE(CheckRtcp1());
     EXPECT_TRUE(CheckRtcp2());
     EXPECT_TRUE(CheckNoRtcp1());
     EXPECT_TRUE(CheckNoRtcp2());
   }
 
   // Check that RTP and RTCP are transmitted ok when both sides
   // support mux and one the offerer requires mux.
   void SendRequireRtcpMuxToRtcpMux() {
     CreateChannels(RTCP | RTCP_MUX, RTCP | RTCP_MUX);
     channel1_->ActivateRtcpMux();
     EXPECT_TRUE(SendInitiate());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(1U, GetTransport1()->channels().size());
     EXPECT_EQ(1U, GetTransport2()->channels().size());
     EXPECT_TRUE(SendAccept());
     EXPECT_TRUE(SendRtp1());
     EXPECT_TRUE(SendRtp2());
     EXPECT_TRUE(SendRtcp1());
     EXPECT_TRUE(SendRtcp2());
     EXPECT_TRUE(CheckRtp1());
     EXPECT_TRUE(CheckRtp2());
     EXPECT_TRUE(CheckNoRtp1());
     EXPECT_TRUE(CheckNoRtp2());
     EXPECT_TRUE(CheckRtcp1());
     EXPECT_TRUE(CheckRtcp2());
     EXPECT_TRUE(CheckNoRtcp1());
     EXPECT_TRUE(CheckNoRtcp2());
   }
 
   // Check that RTP and RTCP are transmitted ok when both sides
   // support mux and one the answerer requires rtcp mux.
   void SendRtcpMuxToRequireRtcpMux() {
     CreateChannels(RTCP | RTCP_MUX, RTCP | RTCP_MUX);
     channel2_->ActivateRtcpMux();
     EXPECT_TRUE(SendInitiate());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(2U, GetTransport1()->channels().size());
     EXPECT_EQ(1U, GetTransport2()->channels().size());
     EXPECT_TRUE(SendAccept());
     EXPECT_EQ(1U, GetTransport1()->channels().size());
     EXPECT_TRUE(SendRtp1());
     EXPECT_TRUE(SendRtp2());
     EXPECT_TRUE(SendRtcp1());
     EXPECT_TRUE(SendRtcp2());
     EXPECT_TRUE(CheckRtp1());
     EXPECT_TRUE(CheckRtp2());
     EXPECT_TRUE(CheckNoRtp1());
     EXPECT_TRUE(CheckNoRtp2());
     EXPECT_TRUE(CheckRtcp1());
     EXPECT_TRUE(CheckRtcp2());
     EXPECT_TRUE(CheckNoRtcp1());
     EXPECT_TRUE(CheckNoRtcp2());
   }
 
   // Check that RTP and RTCP are transmitted ok when both sides
   // require mux.
   void SendRequireRtcpMuxToRequireRtcpMux() {
     CreateChannels(RTCP | RTCP_MUX, RTCP | RTCP_MUX);
     channel1_->ActivateRtcpMux();
     channel2_->ActivateRtcpMux();
     EXPECT_TRUE(SendInitiate());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(1U, GetTransport1()->channels().size());
     EXPECT_EQ(1U, GetTransport2()->channels().size());
     EXPECT_TRUE(SendAccept());
     EXPECT_EQ(1U, GetTransport1()->channels().size());
     EXPECT_TRUE(SendRtp1());
     EXPECT_TRUE(SendRtp2());
     EXPECT_TRUE(SendRtcp1());
     EXPECT_TRUE(SendRtcp2());
     EXPECT_TRUE(CheckRtp1());
     EXPECT_TRUE(CheckRtp2());
     EXPECT_TRUE(CheckNoRtp1());
     EXPECT_TRUE(CheckNoRtp2());
     EXPECT_TRUE(CheckRtcp1());
     EXPECT_TRUE(CheckRtcp2());
     EXPECT_TRUE(CheckNoRtcp1());
     EXPECT_TRUE(CheckNoRtcp2());
   }
 
   // Check that SendAccept fails if the answerer doesn't support mux
   // and the offerer requires it.
   void SendRequireRtcpMuxToNoRtcpMux() {
     CreateChannels(RTCP | RTCP_MUX, RTCP);
     channel1_->ActivateRtcpMux();
     EXPECT_TRUE(SendInitiate());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(1U, GetTransport1()->channels().size());
     EXPECT_EQ(2U, GetTransport2()->channels().size());
     EXPECT_FALSE(SendAccept());
   }
 
   // Check that RTCP data sent by the initiator before the accept is not muxed.
   void SendEarlyRtcpMuxToRtcp() {
     CreateChannels(RTCP | RTCP_MUX, RTCP);
     EXPECT_TRUE(SendInitiate());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(2U, GetTransport1()->channels().size());
     EXPECT_EQ(2U, GetTransport2()->channels().size());
 
     // RTCP can be sent before the call is accepted, if the transport is ready.
     // It should not be muxed though, as the remote side doesn't support mux.
     EXPECT_TRUE(SendRtcp1());
     EXPECT_TRUE(CheckNoRtp2());
     EXPECT_TRUE(CheckRtcp2());
 
     // Send RTCP packet from callee and verify that it is received.
@@ skipping 10 matching lines @@
     EXPECT_TRUE(CheckRtcp1());
   }
 
 
   // Check that RTCP data is not muxed until both sides have enabled muxing,
   // but that we properly demux before we get the accept message, since there
   // is a race between RTP data and the jingle accept.
   void SendEarlyRtcpMuxToRtcpMux() {
     CreateChannels(RTCP | RTCP_MUX, RTCP | RTCP_MUX);
     EXPECT_TRUE(SendInitiate());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(2U, GetTransport1()->channels().size());
     EXPECT_EQ(1U, GetTransport2()->channels().size());
 
     // RTCP can't be sent yet, since the RTCP transport isn't writable, and
     // we haven't yet received the accept that says we should mux.
     EXPECT_FALSE(SendRtcp1());
 
     // Send muxed RTCP packet from callee and verify that it is received.
     EXPECT_TRUE(SendRtcp2());
     EXPECT_TRUE(CheckNoRtp1());
@@ skipping 70 matching lines @@
   // sent and received. The test uses SRTP, RTCP mux and SSRC mux.
   void SendEarlyMediaUsingRtcpMuxSrtp() {
       int sequence_number1_1 = 0, sequence_number2_2 = 0;
 
       CreateChannels(SSRC_MUX | RTCP | RTCP_MUX | SECURE,
                      SSRC_MUX | RTCP | RTCP_MUX | SECURE);
       EXPECT_TRUE(SendOffer());
       EXPECT_TRUE(SendProvisionalAnswer());
       EXPECT_TRUE(channel1_->secure());
       EXPECT_TRUE(channel2_->secure());
+      ASSERT_TRUE(GetTransport1());
+      ASSERT_TRUE(GetTransport2());
       EXPECT_EQ(2U, GetTransport1()->channels().size());
       EXPECT_EQ(2U, GetTransport2()->channels().size());
       EXPECT_TRUE(SendCustomRtcp1(kSsrc1));
       EXPECT_TRUE(CheckCustomRtcp2(kSsrc1));
       EXPECT_TRUE(SendCustomRtp1(kSsrc1, ++sequence_number1_1));
       EXPECT_TRUE(CheckCustomRtp2(kSsrc1, sequence_number1_1));
 
       // Send packets from callee and verify that it is received.
       EXPECT_TRUE(SendCustomRtcp2(kSsrc2));
       EXPECT_TRUE(CheckCustomRtcp1(kSsrc2));
@@ skipping 63 matching lines @@
     EXPECT_TRUE(CheckNoRtcp1());
     EXPECT_TRUE(CheckNoRtcp2());
   }
 
   // Test that the mediachannel retains its sending state after the transport
   // becomes non-writable.
   void SendWithWritabilityLoss() {
     CreateChannels(0, 0);
     EXPECT_TRUE(SendInitiate());
     EXPECT_TRUE(SendAccept());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(1U, GetTransport1()->channels().size());
     EXPECT_EQ(1U, GetTransport2()->channels().size());
     EXPECT_TRUE(SendRtp1());
     EXPECT_TRUE(SendRtp2());
     EXPECT_TRUE(CheckRtp1());
     EXPECT_TRUE(CheckRtp2());
     EXPECT_TRUE(CheckNoRtp1());
     EXPECT_TRUE(CheckNoRtp2());
 
     // Lose writability, which should fail.
@@ skipping 44 matching lines @@
     int pl_type2 = pl_types[1];
     int flags = SSRC_MUX | RTCP;
     if (secure) flags |= SECURE;
     uint32 expected_channels = 2U;
     if (rtcp_mux) {
       flags |= RTCP_MUX;
       expected_channels = 1U;
     }
     CreateChannels(flags, flags);
     EXPECT_TRUE(SendInitiate());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(2U, GetTransport1()->channels().size());
     EXPECT_EQ(expected_channels, GetTransport2()->channels().size());
     EXPECT_TRUE(SendAccept());
     EXPECT_EQ(expected_channels, GetTransport1()->channels().size());
     EXPECT_EQ(expected_channels, GetTransport2()->channels().size());
     EXPECT_TRUE(channel1_->bundle_filter()->FindPayloadType(pl_type1));
     EXPECT_TRUE(channel2_->bundle_filter()->FindPayloadType(pl_type1));
     EXPECT_FALSE(channel1_->bundle_filter()->FindPayloadType(pl_type2));
     EXPECT_FALSE(channel2_->bundle_filter()->FindPayloadType(pl_type2));
     // channel1 - should only have media_content2 as remote. i.e. kSsrc2
@@ skipping 168 matching lines @@
     EXPECT_FALSE(media_channel1_->HasRecvStream(2));
     EXPECT_TRUE(media_channel1_->HasRecvStream(3));
   }
 
   void TestFlushRtcp() {
     bool send_rtcp1;
 
     CreateChannels(RTCP, RTCP);
     EXPECT_TRUE(SendInitiate());
     EXPECT_TRUE(SendAccept());
+    ASSERT_TRUE(GetTransport1());
+    ASSERT_TRUE(GetTransport2());
     EXPECT_EQ(2U, GetTransport1()->channels().size());
     EXPECT_EQ(2U, GetTransport2()->channels().size());
 
     // Send RTCP1 from a different thread.
     CallOnThreadAndWaitForDone(&ChannelTest<T>::SendRtcp1, &send_rtcp1);
     EXPECT_TRUE(send_rtcp1);
     // The sending message is only posted.  channel2_ should be empty.
     EXPECT_TRUE(CheckNoRtcp2());
 
     // When channel1_ is deleted, the RTCP packet should be sent out to
@@ skipping 100 matching lines @@
     EXPECT_FALSE(media_channel1_->ready_to_send());
     // In the case of rtcp mux, the SignalReadyToSend() from rtp channel
     // should trigger the MediaChannel's OnReadyToSend.
     rtp->SignalReadyToSend(rtp);
     EXPECT_TRUE(media_channel1_->ready_to_send());
     channel1_->SetReadyToSend(rtp, false);
     EXPECT_FALSE(media_channel1_->ready_to_send());
   }
 
  protected:
-  cricket::FakeSession session1_;
-  cricket::FakeSession session2_;
+  cricket::FakeTransportController transport_controller1_;
+  cricket::FakeTransportController transport_controller2_;
   cricket::FakeMediaEngine media_engine_;
   // The media channels are owned by the voice channel objects below.
   typename T::MediaChannel* media_channel1_;
   typename T::MediaChannel* media_channel2_;
   rtc::scoped_ptr<typename T::Channel> channel1_;
   rtc::scoped_ptr<typename T::Channel> channel2_;
   typename T::Content local_media_content1_;
   typename T::Content local_media_content2_;
   typename T::Content remote_media_content1_;
   typename T::Content remote_media_content2_;
@@ skipping 77 matching lines @@
     ASSERT_TRUE(media_channel1_->GetOptions(&actual_options));
     EXPECT_EQ(options2, actual_options);
     ASSERT_TRUE(media_channel2_->GetOptions(&actual_options));
     EXPECT_EQ(options2, actual_options);
   }
 };
 
 // override to add NULL parameter
 template<>
 cricket::VideoChannel* ChannelTest<VideoTraits>::CreateChannel(
-    rtc::Thread* thread, cricket::MediaEngineInterface* engine,
-    cricket::FakeVideoMediaChannel* ch, cricket::BaseSession* session,
+    rtc::Thread* thread,
+    cricket::MediaEngineInterface* engine,
+    cricket::FakeVideoMediaChannel* ch,
+    cricket::TransportController* transport_controller,
     bool rtcp) {
   cricket::VideoChannel* channel = new cricket::VideoChannel(
-      thread, ch, session, cricket::CN_VIDEO, rtcp);
+      thread, ch, transport_controller, cricket::CN_VIDEO, rtcp);
   if (!channel->Init()) {
     delete channel;
     channel = NULL;
   }
   return channel;
 }
 
 // override to add 0 parameter
 template<>
 bool ChannelTest<VideoTraits>::AddStream1(int id) {
@@ skipping 790 matching lines @@
   typedef ChannelTest<DataTraits>
   Base;
   DataChannelTest() : Base(kDataPacket, sizeof(kDataPacket),
                            kRtcpReport, sizeof(kRtcpReport)) {
   }
 };
 
 // Override to avoid engine channel parameter.
 template<>
 cricket::DataChannel* ChannelTest<DataTraits>::CreateChannel(
-    rtc::Thread* thread, cricket::MediaEngineInterface* engine,
-    cricket::FakeDataMediaChannel* ch, cricket::BaseSession* session,
+    rtc::Thread* thread,
+    cricket::MediaEngineInterface* engine,
+    cricket::FakeDataMediaChannel* ch,
+    cricket::TransportController* transport_controller,
     bool rtcp) {
   cricket::DataChannel* channel = new cricket::DataChannel(
-      thread, ch, session, cricket::CN_DATA, rtcp);
+      thread, ch, transport_controller, cricket::CN_DATA, rtcp);
   if (!channel->Init()) {
     delete channel;
     channel = NULL;
   }
   return channel;
 }
 
 template<>
 void ChannelTest<DataTraits>::CreateContent(
     int flags,
@@ skipping 165 matching lines @@
   };
   rtc::Buffer payload(data, 3);
   cricket::SendDataResult result;
   ASSERT_TRUE(media_channel1_->SendData(params, payload, &result));
   EXPECT_EQ(params.ssrc,
             media_channel1_->last_sent_data_params().ssrc);
   EXPECT_EQ("foo", media_channel1_->last_sent_data());
 }
 
 // TODO(pthatcher): TestSetReceiver?