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// Copyright 2015 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 REMOTING_PROTOCOL_CHANNEL_SOCKET_ADAPTER_H_
#define REMOTING_PROTOCOL_CHANNEL_SOCKET_ADAPTER_H_
#include <stddef.h>
#include "base/callback_forward.h"
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/threading/thread_checker.h"
#include "remoting/protocol/p2p_datagram_socket.h"
#include "third_party/webrtc/base/asyncpacketsocket.h"
#include "third_party/webrtc/base/sigslot.h"
#include "third_party/webrtc/base/socketaddress.h"
namespace cricket {
class TransportChannel;
} // namespace cricket
namespace remoting {
namespace protocol {
// TransportChannelSocketAdapter implements P2PDatagramSocket interface on
// top of libjingle's TransportChannel. It is used by IceTransport to provide
// P2PDatagramSocket interface for channels.
class TransportChannelSocketAdapter : public P2PDatagramSocket,
public sigslot::has_slots<> {
public:
// Doesn't take ownership of the |channel|. The |channel| must outlive
// this adapter.
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 Recv() and Send() after the stream is closed.
// Must be called before the session and the channel are destroyed.
void Close(int error_code);
// P2PDatagramSocket interface.
int Recv(const scoped_refptr<net::IOBuffer>& buf, int buf_len,
const net::CompletionCallback& callback) override;
int Send(const scoped_refptr<net::IOBuffer>& buf, int buf_len,
const net::CompletionCallback& callback) 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::ThreadChecker thread_checker_;
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 protocol
} // namespace remoting
#endif // REMOTING_PROTOCOL_CHANNEL_SOCKET_ADAPTER_H_
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