jingle/glue/channel_socket_adapter.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef JINGLE_GLUE_CHANNEL_SOCKET_ADAPTER_H_
   6 #define JINGLE_GLUE_CHANNEL_SOCKET_ADAPTER_H_
   7
   8 #include "base/callback_forward.h"
   9 #include "base/compiler_specific.h"
  10 #include "net/socket/socket.h"
  11 #include "third_party/libjingle/source/talk/base/socketaddress.h"
  12 #include "third_party/libjingle/source/talk/base/sigslot.h"
  13
  14 namespace base {
  15 class MessageLoop;
  16 }
  17
  18 namespace cricket {
  19 class TransportChannel;
  20 }  // namespace cricket
  21
  22 namespace jingle_glue {
  23
  24 // TransportChannelSocketAdapter implements net::Socket interface on
  25 // top of libjingle's TransportChannel. It is used by
  26 // JingleChromotocolConnection to provide net::Socket interface for channels.
  27 class TransportChannelSocketAdapter : public net::Socket,
  28                                       public sigslot::has_slots<> {
  29  public:
  30   // TransportChannel object is always owned by the corresponding session.
  31   explicit TransportChannelSocketAdapter(cricket::TransportChannel* channel);
  32   virtual ~TransportChannelSocketAdapter();
  33
  34   // Sets callback that should be called when the adapter is being
  35   // destroyed. The callback is not allowed to touch the adapter, but
  36   // can do anything else, e.g. destroy the TransportChannel.
  37   void SetOnDestroyedCallback(const base::Closure& callback);
  38
  39   // Closes the stream. |error_code| specifies error code that will
  40   // be returned by Read() and Write() after the stream is closed.
  41   // Must be called before the session and the channel are destroyed.
  42   void Close(int error_code);
  43
  44   // Socket implementation.
  45   virtual int Read(net::IOBuffer* buf, int buf_len,
  46                    const net::CompletionCallback& callback) OVERRIDE;
  47   virtual int Write(net::IOBuffer* buf, int buf_len,
  48                     const net::CompletionCallback& callback) OVERRIDE;
  49
  50   virtual bool SetReceiveBufferSize(int32 size) OVERRIDE;
  51   virtual bool SetSendBufferSize(int32 size) OVERRIDE;
  52
  53  private:
  54   void OnNewPacket(cricket::TransportChannel* channel,
  55                    const char* data,
  56                    size_t data_size,
  57                    int flags);
  58   void OnWritableState(cricket::TransportChannel* channel);
  59   void OnChannelDestroyed(cricket::TransportChannel* channel);
  60
  61   base::MessageLoop* message_loop_;
  62
  63   cricket::TransportChannel* channel_;
  64
  65   base::Closure destruction_callback_;
  66
  67   net::CompletionCallback read_callback_;
  68   scoped_refptr<net::IOBuffer> read_buffer_;
  69   int read_buffer_size_;
  70
  71   net::CompletionCallback write_callback_;
  72   scoped_refptr<net::IOBuffer> write_buffer_;
  73   int write_buffer_size_;
  74
  75   int closed_error_code_;
  76
  77   DISALLOW_COPY_AND_ASSIGN(TransportChannelSocketAdapter);
  78 };
  79
  80 }  // namespace jingle_glue
  81
  82 #endif  // JINGLE_GLUE_CHANNEL_SOCKET_ADAPTER_H_