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