1 files changed, 125 insertions, 0 deletions
diff --git a/Plugins/jingle/libjingle/talk/session/tunnel/pseudotcpchannel.h b/Plugins/jingle/libjingle/talk/session/tunnel/pseudotcpchannel.h
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+++ b/Plugins/jingle/libjingle/talk/session/tunnel/pseudotcpchannel.h
@@ -0,0 +1,125 @@
+/*
+ * libjingle
+ * Copyright 2004--2006, 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,
+ *     this list of conditions and the following disclaimer in the documentation
+ *     and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products 
+ *     derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * 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 __PSEUDOTCPCHANNEL_H__
+#define __PSEUDOTCPCHANNEL_H__
+
+#include "talk/base/criticalsection.h"
+#include "talk/base/messagequeue.h"
+#include "talk/base/stream.h"
+#include "talk/p2p/base/pseudotcp.h"
+#include "talk/p2p/base/session.h"
+
+namespace talk_base {
+class Thread;
+}
+
+namespace cricket {
+
+class TransportChannel;
+
+///////////////////////////////////////////////////////////////////////////////
+// ChannelStream
+// Note: The lifetime of TunnelSession is complicated.  It needs to survive
+// until the following three conditions are true:
+// 1) TunnelStream has called Close (tracked via non-null stream_)
+// 2) PseudoTcp has completed (tracked via non-null tcp_)
+// 3) Session has been destroyed (tracked via non-null session_)
+// This is accomplished by calling CheckDestroy after these indicators change.
+///////////////////////////////////////////////////////////////////////////////
+// TunnelStream
+// Note: Because TunnelStream provides a stream interface, it's lifetime is
+// controlled by the owner of the stream pointer.  As a result, we must support
+// both the TunnelSession disappearing before TunnelStream, and vice versa.
+///////////////////////////////////////////////////////////////////////////////
+
+class PseudoTcpChannel
+  : public IPseudoTcpNotify,
+    public talk_base::MessageHandler,
+    public sigslot::has_slots<> {
+public:
+  // Signal thread methods
+  PseudoTcpChannel(talk_base::Thread* stream_thread,
+                   Session* session);
+
+  bool Connect(const std::string& channel_name);
+  talk_base::StreamInterface* GetStream();
+
+  sigslot::signal1<PseudoTcpChannel*> SignalChannelClosed;
+
+private:
+  class InternalStream;
+  friend class InternalStream;
+
+  virtual ~PseudoTcpChannel();
+
+  // Stream thread methods
+  talk_base::StreamState GetState() const;
+  talk_base::StreamResult Read(void* buffer, size_t buffer_len,
+                               size_t* read, int* error);
+  talk_base::StreamResult Write(const void* data, size_t data_len,
+                                size_t* written, int* error);
+  void Close();
+
+  // Multi-thread methods
+  void OnMessage(talk_base::Message* pmsg);
+  void AdjustClock(bool clear = true);
+  void CheckDestroy();
+
+  // Signal thread methods
+  void OnChannelDestroyed(TransportChannel* channel);
+
+  // Worker thread methods
+  void OnChannelWritableState(TransportChannel* channel);
+  void OnChannelRead(TransportChannel* channel, const char* data, size_t size);
+  void OnChannelConnectionChanged(TransportChannel* channel,
+                                  const talk_base::SocketAddress& addr);
+
+  virtual void OnTcpOpen(PseudoTcp* ptcp);
+  virtual void OnTcpReadable(PseudoTcp* ptcp);
+  virtual void OnTcpWriteable(PseudoTcp* ptcp);
+  virtual void OnTcpClosed(PseudoTcp* ptcp, uint32 nError);
+  virtual IPseudoTcpNotify::WriteResult TcpWritePacket(PseudoTcp* tcp,
+                                                       const char* buffer,
+                                                       size_t len);
+
+  talk_base::Thread* signal_thread_, * worker_thread_, * stream_thread_;
+  Session* session_;
+  TransportChannel* channel_;
+  std::string channel_name_;
+  PseudoTcp* tcp_;
+  InternalStream* stream_;
+  bool stream_readable_, pending_read_event_;
+  bool ready_to_connect_;
+  mutable talk_base::CriticalSection cs_;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+} // namespace cricket
+
+#endif // __PSEUDOTCPCHANNEL_H__