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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef JINGLE_GLUE_CHANNEL_SOCKET_ADAPTER_H_
#define JINGLE_GLUE_CHANNEL_SOCKET_ADAPTER_H_
#include "base/callback_forward.h"
#include "base/compiler_specific.h"
#include "net/socket/socket.h"
#include "third_party/webrtc/base/asyncpacketsocket.h"
#include "third_party/webrtc/base/sigslot.h"
#include "third_party/webrtc/base/socketaddress.h"
namespace base {
class MessageLoop;
}
namespace cricket {
class TransportChannel;
} // namespace cricket
namespace jingle_glue {
// TransportChannelSocketAdapter implements net::Socket interface on
// top of libjingle's TransportChannel. It is used by
// JingleChromotocolConnection to provide net::Socket interface for channels.
class TransportChannelSocketAdapter : public net::Socket,
public sigslot::has_slots<> {
public:
// TransportChannel object is always owned by the corresponding session.
explicit TransportChannelSocketAdapter(cricket::TransportChannel* channel);
~TransportChannelSocketAdapter() override;
// Sets callback that should be called when the adapter is being
// destroyed. The callback is not allowed to touch the adapter, but
// can do anything else, e.g. destroy the TransportChannel.
void SetOnDestroyedCallback(const base::Closure& callback);
// Closes the stream. |error_code| specifies error code that will
// be returned by Read() and Write() after the stream is closed.
// Must be called before the session and the channel are destroyed.
void Close(int error_code);
// Socket implementation.
int Read(net::IOBuffer* buf,
int buf_len,
const net::CompletionCallback& callback) override;
int Write(net::IOBuffer* buf,
int buf_len,
const net::CompletionCallback& callback) override;
int SetReceiveBufferSize(int32 size) override;
int SetSendBufferSize(int32 size) override;
private:
void OnNewPacket(cricket::TransportChannel* channel,
const char* data,
size_t data_size,
const rtc::PacketTime& packet_time,
int flags);
void OnWritableState(cricket::TransportChannel* channel);
void OnChannelDestroyed(cricket::TransportChannel* channel);
base::MessageLoop* message_loop_;
cricket::TransportChannel* channel_;
base::Closure destruction_callback_;
net::CompletionCallback read_callback_;
scoped_refptr<net::IOBuffer> read_buffer_;
int read_buffer_size_;
net::CompletionCallback write_callback_;
scoped_refptr<net::IOBuffer> write_buffer_;
int write_buffer_size_;
int closed_error_code_;
DISALLOW_COPY_AND_ASSIGN(TransportChannelSocketAdapter);
};
} // namespace jingle_glue
#endif // JINGLE_GLUE_CHANNEL_SOCKET_ADAPTER_H_
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