Modified PeerConnection and WebRtcSession for end-to-end QuicDataChannel usage.

webrtc/api/quicdatatransport.h

 /*
  *  Copyright 2016 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.
  */
 
 #ifndef WEBRTC_API_QUICDATATRANSPORT_H_
 #define WEBRTC_API_QUICDATATRANSPORT_H_
 
 #include <string>
 #include <unordered_map>
 
 #include "webrtc/api/datachannelinterface.h"
 #include "webrtc/api/quicdatachannel.h"
 #include "webrtc/base/scoped_ref_ptr.h"
 #include "webrtc/base/sigslot.h"
 #include "webrtc/base/thread.h"
+#include "webrtc/p2p/base/transportcontroller.h"
 
 namespace cricket {
 class QuicTransportChannel;
 class ReliableQuicStream;
 }  // namepsace cricket
 
 namespace webrtc {
 
 // QuicDataTransport creates QuicDataChannels for the PeerConnection. It also
 // handles QUIC stream demuxing by distributing incoming QUIC streams from the
 // QuicTransportChannel among the QuicDataChannels that it has created.
 //
 // QuicDataTransport reads the data channel ID from the incoming QUIC stream,
 // then looks it up in a map of ID => QuicDataChannel. If the data channel
 // exists, it sends the QUIC stream to the QuicDataChannel.
 class QuicDataTransport : public sigslot::has_slots<> {
  public:
   QuicDataTransport(rtc::Thread* signaling_thread,
                     rtc::Thread* worker_thread,
-                    rtc::Thread* network_thread);
+                    rtc::Thread* network_thread,
+                    cricket::TransportController* transport_controller);
   ~QuicDataTransport() override;
 
   // Sets the QUIC transport channel for the QuicDataChannels and the
   // QuicDataTransport. Returns false if a different QUIC transport channel is
   // already set, the QUIC transport channel cannot be set for any of the
   // QuicDataChannels, or |channel| is NULL.
   bool SetTransportChannel(cricket::QuicTransportChannel* channel);
 
+  bool SetTransport(const std::string& transport_name);
+
   // Creates a QuicDataChannel that uses this QuicDataTransport.
   rtc::scoped_refptr<DataChannelInterface> CreateDataChannel(
       const std::string& label,
       const DataChannelInit* config);
 
   // Removes a QuicDataChannel with the given ID from the QuicDataTransport's
   // data channel map.
   void DestroyDataChannel(int id);
 
   // True if the QuicDataTransport has a data channel with the given ID.
   bool HasDataChannel(int id) const;
 
   // True if the QuicDataTransport has data channels.
   bool HasDataChannels() const;
 
+  const std::string& transport_name() const { return transport_name_; }
+  void set_transport_name(const std::string& transport_name) {
+    transport_name_ = transport_name;
+  }
+  const std::string& content_name() const { return content_name_; }
+  void set_content_name(const std::string& content_name) {
+    content_name_ = content_name;
+  }

[pthatcher1, 2016/07/22 17:57:57]

Can you put this together with SetTransport and put in a comment that says that
the QuicDataTransport is acting like a BaseChannel with those methods?  That
would make things more clear.

[Zhi Huang, 2016/07/25 23:40:36]

Done.

+
  private:
   // Called from the QuicTransportChannel when a ReliableQuicStream is created
   // to receive incoming data.
   void OnIncomingStream(cricket::ReliableQuicStream* stream);
   // Called from the ReliableQuicStream when the first QUIC stream frame is
   // received for incoming data. The QuicDataTransport reads the data channel ID
   // and message ID from the incoming data, then dispatches the
   // ReliableQuicStream to the QuicDataChannel with the same data channel ID.
   void OnDataReceived(net::QuicStreamId stream_id,
                       const char* data,
                       size_t len);
 
+  bool SetTransport_n(const std::string& transport_name);
+  void DestroyTransportChannels_n();
+
   // Map of data channel ID => QUIC data channel values.
   std::unordered_map<int, rtc::scoped_refptr<QuicDataChannel>>
       data_channel_by_id_;
   // Map of QUIC stream ID => ReliableQuicStream* values.
   std::unordered_map<net::QuicStreamId, cricket::ReliableQuicStream*>
       quic_stream_by_id_;
   // QuicTransportChannel for sending/receiving data.
   cricket::QuicTransportChannel* quic_transport_channel_ = nullptr;
   // Threads for the QUIC data channel.
   rtc::Thread* const signaling_thread_;
   rtc::Thread* const worker_thread_;
   rtc::Thread* const network_thread_;
+
+  std::string content_name_;
+  // Transport related members that should be accessed from network thread.
+  cricket::TransportController* transport_controller_;
+  std::string transport_name_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_QUICDATATRANSPORT_H_