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// Copyright 2015 The Chromium Authors
// 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/compiler_specific.h"
#include "base/functional/callback_forward.h"
#include "base/memory/raw_ptr.h"
#include "base/threading/thread_checker.h"
#include "net/base/net_errors.h"
#include "remoting/protocol/p2p_datagram_socket.h"
// TODO(zhihuang):Replace #include by forward declaration once proper
// inheritance is defined for webrtc::IceTransportInternal and
// webrtc::P2PTransportChannel.
#include "third_party/webrtc/p2p/base/ice_transport_internal.h"
// TODO(johan): Replace #include by forward declaration once proper
// inheritance is defined for webrtc::PacketTransportInterface and
// webrtc::TransportChannel.
#include "third_party/webrtc/p2p/base/packet_transport_internal.h"
#include "third_party/webrtc/rtc_base/async_packet_socket.h"
#include "third_party/webrtc/rtc_base/socket_address.h"
namespace remoting::protocol {
// TransportChannelSocketAdapter implements P2PDatagramSocket interface on
// top of webrtc::IceTransportInternal. It is used by IceTransport to provide
// P2PDatagramSocket interface for channels.
class TransportChannelSocketAdapter : public P2PDatagramSocket {
public:
// Doesn't take ownership of |ice_transport|. |ice_transport| must outlive
// this adapter.
explicit TransportChannelSocketAdapter(
webrtc::IceTransportInternal* ice_transport);
TransportChannelSocketAdapter(const TransportChannelSocketAdapter&) = delete;
TransportChannelSocketAdapter& operator=(
const TransportChannelSocketAdapter&) = delete;
~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(base::OnceClosure 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::CompletionRepeatingCallback& callback) override;
int Send(const scoped_refptr<net::IOBuffer>& buf,
int buf_len,
const net::CompletionRepeatingCallback& callback) override;
private:
void OnNewPacket(webrtc::PacketTransportInternal* transport,
const webrtc::ReceivedIpPacket& packet);
void OnWritableState(webrtc::PacketTransportInternal* transport);
raw_ptr<webrtc::IceTransportInternal> channel_;
base::OnceClosure destruction_callback_;
net::CompletionRepeatingCallback read_callback_;
scoped_refptr<net::IOBuffer> read_buffer_;
int read_buffer_size_;
net::CompletionRepeatingCallback write_callback_;
scoped_refptr<net::IOBuffer> write_buffer_;
int write_buffer_size_;
int closed_error_code_ = net::OK;
THREAD_CHECKER(thread_checker_);
};
} // namespace remoting::protocol
#endif // REMOTING_PROTOCOL_CHANNEL_SOCKET_ADAPTER_H_
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