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// Copyright (c) 2011 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 SERVICES_NETWORK_P2P_SOCKET_TCP_H_
#define SERVICES_NETWORK_P2P_SOCKET_TCP_H_
#include <stdint.h>
#include <memory>
#include <vector>
#include "base/compiler_specific.h"
#include "base/component_export.h"
#include "base/containers/queue.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/ref_counted.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "net/base/ip_endpoint.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
#include "services/network/p2p/socket.h"
#include "services/network/public/cpp/p2p_socket_type.h"
namespace net {
class DrainableIOBuffer;
class GrowableIOBuffer;
class StreamSocket;
} // namespace net
namespace network {
class ProxyResolvingClientSocketFactory;
class COMPONENT_EXPORT(NETWORK_SERVICE) P2PSocketTcpBase : public P2PSocket {
public:
P2PSocketTcpBase(
Delegate* delegate,
mojo::PendingRemote<mojom::P2PSocketClient> client,
mojo::PendingReceiver<mojom::P2PSocket> socket,
P2PSocketType type,
ProxyResolvingClientSocketFactory* proxy_resolving_socket_factory);
P2PSocketTcpBase(const P2PSocketTcpBase&) = delete;
P2PSocketTcpBase& operator=(const P2PSocketTcpBase&) = delete;
~P2PSocketTcpBase() override;
void InitAccepted(const net::IPEndPoint& remote_address,
std::unique_ptr<net::StreamSocket> socket);
// P2PSocket overrides.
void Init(const net::IPEndPoint& local_address,
uint16_t min_port,
uint16_t max_port,
const P2PHostAndIPEndPoint& remote_address,
const net::NetworkIsolationKey& network_isolation_key) override;
// mojom::P2PSocket implementation:
void Send(const std::vector<int8_t>& data,
const P2PPacketInfo& packet_info,
const net::MutableNetworkTrafficAnnotationTag& traffic_annotation)
override;
void SetOption(P2PSocketOption option, int32_t value) override;
protected:
struct SendBuffer {
SendBuffer();
SendBuffer(int32_t packet_id,
scoped_refptr<net::DrainableIOBuffer> buffer,
const net::NetworkTrafficAnnotationTag traffic_annotation);
SendBuffer(const SendBuffer& rhs);
~SendBuffer();
int32_t rtc_packet_id;
scoped_refptr<net::DrainableIOBuffer> buffer;
net::MutableNetworkTrafficAnnotationTag traffic_annotation;
};
// Derived classes will provide the implementation.
virtual bool ProcessInput(char* input,
int input_len,
size_t* bytes_consumed) = 0;
virtual void DoSend(
const net::IPEndPoint& to,
const std::vector<int8_t>& data,
const rtc::PacketOptions& options,
const net::NetworkTrafficAnnotationTag traffic_annotation) = 0;
void WriteOrQueue(SendBuffer& send_buffer);
WARN_UNUSED_RESULT bool OnPacket(std::vector<int8_t> data);
private:
friend class P2PSocketTcpTestBase;
friend class P2PSocketTcpServerTest;
void DoRead();
void DoWrite();
// Return |false| in case of an error. The socket is destroyed in that case,
// so the caller should not use |this|.
WARN_UNUSED_RESULT bool HandleReadResult(int result);
WARN_UNUSED_RESULT bool HandleWriteResult(int result);
// Callbacks for Connect(), Read() and Write().
void OnConnected(int result);
void OnRead(int result);
void OnWritten(int result);
// Helper method to send socket create message and start read.
void OnOpen();
bool DoSendSocketCreateMsg();
P2PHostAndIPEndPoint remote_address_;
std::unique_ptr<net::StreamSocket> socket_;
scoped_refptr<net::GrowableIOBuffer> read_buffer_;
base::queue<SendBuffer> write_queue_;
SendBuffer write_buffer_;
bool write_pending_ = false;
bool connected_ = false;
const P2PSocketType type_;
raw_ptr<ProxyResolvingClientSocketFactory> proxy_resolving_socket_factory_;
};
class COMPONENT_EXPORT(NETWORK_SERVICE) P2PSocketTcp : public P2PSocketTcpBase {
public:
P2PSocketTcp(
Delegate* delegate,
mojo::PendingRemote<mojom::P2PSocketClient> client,
mojo::PendingReceiver<mojom::P2PSocket> socket,
P2PSocketType type,
ProxyResolvingClientSocketFactory* proxy_resolving_socket_factory);
P2PSocketTcp(const P2PSocketTcp&) = delete;
P2PSocketTcp& operator=(const P2PSocketTcp&) = delete;
~P2PSocketTcp() override;
protected:
bool ProcessInput(char* input,
int input_len,
size_t* bytes_consumed) override;
void DoSend(
const net::IPEndPoint& to,
const std::vector<int8_t>& data,
const rtc::PacketOptions& options,
const net::NetworkTrafficAnnotationTag traffic_annotation) override;
};
// P2PSocketStunTcp class provides the framing of STUN messages when used
// with TURN. These messages will not have length at front of the packet and
// are padded to multiple of 4 bytes.
// Formatting of messages is defined in RFC5766.
class COMPONENT_EXPORT(NETWORK_SERVICE) P2PSocketStunTcp
: public P2PSocketTcpBase {
public:
P2PSocketStunTcp(
Delegate* delegate,
mojo::PendingRemote<mojom::P2PSocketClient> client,
mojo::PendingReceiver<mojom::P2PSocket> socket,
P2PSocketType type,
ProxyResolvingClientSocketFactory* proxy_resolving_socket_factory);
P2PSocketStunTcp(const P2PSocketStunTcp&) = delete;
P2PSocketStunTcp& operator=(const P2PSocketStunTcp&) = delete;
~P2PSocketStunTcp() override;
protected:
bool ProcessInput(char* input,
int input_len,
size_t* bytes_consumed) override;
void DoSend(
const net::IPEndPoint& to,
const std::vector<int8_t>& data,
const rtc::PacketOptions& options,
const net::NetworkTrafficAnnotationTag traffic_annotation) override;
private:
int GetExpectedPacketSize(const uint8_t* data, int len, int* pad_bytes);
};
} // namespace network
#endif // SERVICES_NETWORK_P2P_SOCKET_TCP_H_
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