TransportController refactoring

talk/session/media/channel.h

 /*
  * libjingle
  * Copyright 2004 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 12 matching lines @@
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef TALK_SESSION_MEDIA_CHANNEL_H_
 #define TALK_SESSION_MEDIA_CHANNEL_H_
 
 #include <string>
 #include <vector>
+#include <map>
+#include <set>
+#include <utility>
 
 #include "talk/media/base/mediachannel.h"
 #include "talk/media/base/mediaengine.h"
 #include "talk/media/base/streamparams.h"
 #include "talk/media/base/videocapturer.h"
-#include "webrtc/p2p/base/session.h"
+#include "webrtc/p2p/base/transportcontroller.h"
 #include "webrtc/p2p/client/socketmonitor.h"
 #include "talk/session/media/audiomonitor.h"
 #include "talk/session/media/bundlefilter.h"
 #include "talk/session/media/mediamonitor.h"
 #include "talk/session/media/mediasession.h"
 #include "talk/session/media/rtcpmuxfilter.h"
 #include "talk/session/media/srtpfilter.h"
 #include "webrtc/base/asyncudpsocket.h"
 #include "webrtc/base/criticalsection.h"
 #include "webrtc/base/network.h"
@@ skipping 20 matching lines @@
 // WARNING! SUBCLASSES MUST CALL Deinit() IN THEIR DESTRUCTORS!
 // This is required to avoid a data race between the destructor modifying the
 // vtable, and the media channel's thread using BaseChannel as the
 // NetworkInterface.
 
 class BaseChannel
     : public rtc::MessageHandler, public sigslot::has_slots<>,
       public MediaChannel::NetworkInterface,
       public ConnectionStatsGetter {
  public:
-  BaseChannel(rtc::Thread* thread, MediaChannel* channel, BaseSession* session,
-              const std::string& content_name, bool rtcp);
+  BaseChannel(rtc::Thread* thread,
+              MediaChannel* channel,
+              TransportController* transport_controller,
+              const std::string& content_name,
+              bool rtcp);
   virtual ~BaseChannel();
   bool Init();
   // Deinit may be called multiple times and is simply ignored if it's alreay
   // done.
   void Deinit();
 
   rtc::Thread* worker_thread() const { return worker_thread_; }
-  BaseSession* session() const { return session_; }
-  const std::string& content_name() { return content_name_; }
+  const std::string& content_name() const { return content_name_; }
+  const std::string& transport_name() const { return transport_name_; }
   TransportChannel* transport_channel() const {
     return transport_channel_;
   }
   TransportChannel* rtcp_transport_channel() const {
     return rtcp_transport_channel_;
   }
   bool enabled() const { return enabled_; }
 
   // This function returns true if we are using SRTP.
   bool secure() const { return srtp_filter_.IsActive(); }
   // The following function returns true if we are using
   // DTLS-based keying. If you turned off SRTP later, however
   // you could have secure() == false and dtls_secure() == true.
   bool secure_dtls() const { return dtls_keyed_; }
   // This function returns true if we require secure channel for call setup.
   bool secure_required() const { return secure_required_; }
 
   bool writable() const { return writable_; }
   bool IsStreamMuted(uint32 ssrc);
 
   // Activate RTCP mux, regardless of the state so far.  Once
   // activated, it can not be deactivated, and if the remote
   // description doesn't support RTCP mux, setting the remote
   // description will fail.
   void ActivateRtcpMux();
+  bool SetTransport(const std::string& transport_name);
   bool PushdownLocalDescription(const SessionDescription* local_desc,
                                 ContentAction action,
                                 std::string* error_desc);
   bool PushdownRemoteDescription(const SessionDescription* remote_desc,
                                 ContentAction action,
                                 std::string* error_desc);
   // Channel control
   bool SetLocalContent(const MediaContentDescription* content,
                        ContentAction action,
                        std::string* error_desc);
   bool SetRemoteContent(const MediaContentDescription* content,
                         ContentAction action,
                         std::string* error_desc);
 
   bool Enable(bool enable);
   // Mute sending media on the stream with SSRC |ssrc|
   // If there is only one sending stream SSRC 0 can be used.
   bool MuteStream(uint32 ssrc, bool mute);
 
   // Multiplexing
   bool AddRecvStream(const StreamParams& sp);
   bool RemoveRecvStream(uint32 ssrc);
   bool AddSendStream(const StreamParams& sp);
   bool RemoveSendStream(uint32 ssrc);
 
   // Monitoring
   void StartConnectionMonitor(int cms);
   void StopConnectionMonitor();
   // For ConnectionStatsGetter, used by ConnectionMonitor
-  virtual bool GetConnectionStats(ConnectionInfos* infos) override;
+  bool GetConnectionStats(ConnectionInfos* infos) override;
 
   void set_srtp_signal_silent_time(uint32 silent_time) {
     srtp_filter_.set_signal_silent_time(silent_time);
   }
 
   BundleFilter* bundle_filter() { return &bundle_filter_; }
 
   const std::vector<StreamParams>& local_streams() const {
     return local_streams_;
   }
   const std::vector<StreamParams>& remote_streams() const {
     return remote_streams_;
   }
 
   sigslot::signal2<BaseChannel*, bool> SignalDtlsSetupFailure;
   void SignalDtlsSetupFailure_w(bool rtcp);
   void SignalDtlsSetupFailure_s(bool rtcp);
 
   // Used for latency measurements.
   sigslot::signal1<BaseChannel*> SignalFirstPacketReceived;
 
   // Used to alert UI when the muted status changes, perhaps autonomously.
   sigslot::repeater2<BaseChannel*, bool> SignalAutoMuted;
 
   // Made public for easier testing.
-  void SetReadyToSend(TransportChannel* channel, bool ready);
+  void SetReadyToSend(bool rtcp, bool ready);
 
   // Only public for unit tests.  Otherwise, consider protected.
   virtual int SetOption(SocketType type, rtc::Socket::Option o, int val);
 
  protected:
   virtual MediaChannel* media_channel() const { return media_channel_; }
-  // Sets the transport_channel_ and rtcp_transport_channel_.  If
-  // |rtcp| is false, set rtcp_transport_channel_ is set to NULL.  Get
-  // the transport channels from |session|.
-  // TODO(pthatcher): Pass in a Transport instead of a BaseSession.
-  bool SetTransportChannels(BaseSession* session, bool rtcp);
-  bool SetTransportChannels_w(BaseSession* session, bool rtcp);
+  // Sets the transport_channel_ (and rtcp_transport_channel_, if |rtcp_| is
+  // true). Gets the transport channels from |transport_controller_|.
+  bool SetTransportChannels(const std::string& transport_name);
+  bool SetTransportChannels_w(const std::string& transport_name);
   void set_transport_channel(TransportChannel* transport);
   void set_rtcp_transport_channel(TransportChannel* transport);
   bool was_ever_writable() const { return was_ever_writable_; }
   void set_local_content_direction(MediaContentDirection direction) {
     local_content_direction_ = direction;
   }
   void set_remote_content_direction(MediaContentDirection direction) {
     remote_content_direction_ = direction;
   }
   void set_secure_required(bool secure_required) {
     secure_required_ = secure_required;
   }
   bool IsReadyToReceive() const;
   bool IsReadyToSend() const;
-  rtc::Thread* signaling_thread() { return session_->signaling_thread(); }
+  rtc::Thread* signaling_thread() {
+    return transport_controller_->signaling_thread();
+  }
   SrtpFilter* srtp_filter() { return &srtp_filter_; }
-  bool rtcp() const { return rtcp_; }
+  bool rtcp_transport_enabled() const { return rtcp_transport_enabled_; }
 
   void ConnectToTransportChannel(TransportChannel* tc);
   void DisconnectFromTransportChannel(TransportChannel* tc);
 
   void FlushRtcpMessages();
 
   // NetworkInterface implementation, called by MediaEngine
   virtual bool SendPacket(rtc::Buffer* packet,
                           rtc::DiffServCodePoint dscp);
   virtual bool SendRtcp(rtc::Buffer* packet,
                         rtc::DiffServCodePoint dscp);
 
   // From TransportChannel
   void OnWritableState(TransportChannel* channel);
   virtual void OnChannelRead(TransportChannel* channel,
                              const char* data,
                              size_t len,
                              const rtc::PacketTime& packet_time,
                              int flags);
   void OnReadyToSend(TransportChannel* channel);
 
   bool PacketIsRtcp(const TransportChannel* channel, const char* data,
                     size_t len);
   bool SendPacket(bool rtcp, rtc::Buffer* packet,
                   rtc::DiffServCodePoint dscp);
   virtual bool WantsPacket(bool rtcp, rtc::Buffer* packet);
   void HandlePacket(bool rtcp, rtc::Buffer* packet,
                     const rtc::PacketTime& packet_time);
 
-  // Apply the new local/remote session description.
-  void OnNewLocalDescription(BaseSession* session, ContentAction action);
-  void OnNewRemoteDescription(BaseSession* session, ContentAction action);
-
   void EnableMedia_w();
   void DisableMedia_w();
   virtual bool MuteStream_w(uint32 ssrc, bool mute);
   bool IsStreamMuted_w(uint32 ssrc);
+  void UpdateWritableState_w();
   void ChannelWritable_w();
   void ChannelNotWritable_w();
   bool AddRecvStream_w(const StreamParams& sp);
   bool RemoveRecvStream_w(uint32 ssrc);
   bool AddSendStream_w(const StreamParams& sp);
   bool RemoveSendStream_w(uint32 ssrc);
   virtual bool ShouldSetupDtlsSrtp() const;
   // Do the DTLS key expansion and impose it on the SRTP/SRTCP filters.
   // |rtcp_channel| indicates whether to set up the RTP or RTCP filter.
   bool SetupDtlsSrtp(bool rtcp_channel);
@@ skipping 50 matching lines @@
       const std::vector<ConnectionInfo>& infos) = 0;
 
   // Helper function for invoking bool-returning methods on the worker thread.
   template <class FunctorT>
   bool InvokeOnWorker(const FunctorT& functor) {
     return worker_thread_->Invoke<bool>(functor);
   }
 
  private:
   rtc::Thread* worker_thread_;
-  BaseSession* session_;
+  TransportController* transport_controller_;
   MediaChannel* media_channel_;
   std::vector<StreamParams> local_streams_;
   std::vector<StreamParams> remote_streams_;
 
   const std::string content_name_;
-  bool rtcp_;
+  std::string transport_name_;
+  bool rtcp_transport_enabled_;
   TransportChannel* transport_channel_;
+  std::vector<std::pair<rtc::Socket::Option, int> > socket_options_;
   TransportChannel* rtcp_transport_channel_;
+  std::vector<std::pair<rtc::Socket::Option, int> > rtcp_socket_options_;
   SrtpFilter srtp_filter_;
   RtcpMuxFilter rtcp_mux_filter_;
   BundleFilter bundle_filter_;
   rtc::scoped_ptr<ConnectionMonitor> connection_monitor_;
   bool enabled_;
   bool writable_;
   bool rtp_ready_to_send_;
   bool rtcp_ready_to_send_;
   bool was_ever_writable_;
   MediaContentDirection local_content_direction_;
   MediaContentDirection remote_content_direction_;
   std::set<uint32> muted_streams_;
   bool has_received_packet_;
   bool dtls_keyed_;
   bool secure_required_;
   int rtp_abs_sendtime_extn_id_;
 };
 
 // VoiceChannel is a specialization that adds support for early media, DTMF,
 // and input/output level monitoring.
 class VoiceChannel : public BaseChannel {
  public:
-  VoiceChannel(rtc::Thread* thread, MediaEngineInterface* media_engine,
-               VoiceMediaChannel* channel, BaseSession* session,
-               const std::string& content_name, bool rtcp);
+  VoiceChannel(rtc::Thread* thread,
+               MediaEngineInterface* media_engine,
+               VoiceMediaChannel* channel,
+               TransportController* transport_controller,
+               const std::string& content_name,
+               bool rtcp);
   ~VoiceChannel();
   bool Init();
   bool SetRemoteRenderer(uint32 ssrc, AudioRenderer* renderer);
   bool SetLocalRenderer(uint32 ssrc, AudioRenderer* renderer);
 
   // downcasts a MediaChannel
   virtual VoiceMediaChannel* media_channel() const {
     return static_cast<VoiceMediaChannel*>(BaseChannel::media_channel());
   }
 
@@ skipping 94 matching lines @@
   // SetSendParameters.
   AudioSendParameters last_send_params_;
   // Last AudioRecvParameters sent down to the media_channel() via
   // SetRecvParameters.
   AudioRecvParameters last_recv_params_;
 };
 
 // VideoChannel is a specialization for video.
 class VideoChannel : public BaseChannel {
  public:
-  VideoChannel(rtc::Thread* thread, VideoMediaChannel* channel,
-               BaseSession* session, const std::string& content_name,
+  VideoChannel(rtc::Thread* thread,
+               VideoMediaChannel* channel,
+               TransportController* transport_controller,
+               const std::string& content_name,
                bool rtcp);
   ~VideoChannel();
   bool Init();
 
   // downcasts a MediaChannel
   virtual VideoMediaChannel* media_channel() const {
     return static_cast<VideoMediaChannel*>(BaseChannel::media_channel());
   }
 
   bool SetRenderer(uint32 ssrc, VideoRenderer* renderer);
@@ skipping 77 matching lines @@
   // Last VideoRecvParameters sent down to the media_channel() via
   // SetRecvParameters.
   VideoRecvParameters last_recv_params_;
 };
 
 // DataChannel is a specialization for data.
 class DataChannel : public BaseChannel {
  public:
   DataChannel(rtc::Thread* thread,
               DataMediaChannel* media_channel,
-              BaseSession* session,
+              TransportController* transport_controller,
               const std::string& content_name,
               bool rtcp);
   ~DataChannel();
   bool Init();
 
   virtual bool SendData(const SendDataParams& params,
                         const rtc::Buffer& payload,
                         SendDataResult* result);
 
   void StartMediaMonitor(int cms);
@@ skipping 102 matching lines @@
   // SetSendParameters.
   DataSendParameters last_send_params_;
   // Last DataRecvParameters sent down to the media_channel() via
   // SetRecvParameters.
   DataRecvParameters last_recv_params_;
 };
 
 }  // namespace cricket
 
 #endif  // TALK_SESSION_MEDIA_CHANNEL_H_