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/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef RTC_BASE_SOCKET_ADAPTERS_H_
#define RTC_BASE_SOCKET_ADAPTERS_H_
#include <cstddef>
#include <cstdint>
#include "api/array_view.h"
#include "rtc_base/async_socket.h"
#include "rtc_base/socket.h"
#include "rtc_base/socket_address.h"
namespace webrtc {
///////////////////////////////////////////////////////////////////////////////
// Implements a socket adapter that can buffer and process data internally,
// as in the case of connecting to a proxy, where you must speak the proxy
// protocol before commencing normal socket behavior.
class BufferedReadAdapter : public AsyncSocketAdapter {
public:
BufferedReadAdapter(Socket* socket, size_t buffer_size);
~BufferedReadAdapter() override;
BufferedReadAdapter(const BufferedReadAdapter&) = delete;
BufferedReadAdapter& operator=(const BufferedReadAdapter&) = delete;
int Send(const void* pv, size_t cb) override;
int Recv(void* pv, size_t cb, int64_t* timestamp) override;
protected:
int DirectSend(const void* pv, size_t cb) {
return AsyncSocketAdapter::Send(pv, cb);
}
void BufferInput(bool on = true);
virtual void ProcessInput(char* data, size_t* len) = 0;
void OnReadEvent(Socket* socket) override;
private:
char* buffer_;
size_t buffer_size_, data_len_;
bool buffering_;
};
///////////////////////////////////////////////////////////////////////////////
// Implements a socket adapter that performs the client side of a
// fake SSL handshake. Used for "ssltcp" P2P functionality.
class AsyncSSLSocket : public BufferedReadAdapter {
public:
static ArrayView<const uint8_t> SslClientHello();
static ArrayView<const uint8_t> SslServerHello();
explicit AsyncSSLSocket(Socket* socket);
AsyncSSLSocket(const AsyncSSLSocket&) = delete;
AsyncSSLSocket& operator=(const AsyncSSLSocket&) = delete;
int Connect(const SocketAddress& addr) override;
protected:
void OnConnectEvent(Socket* socket) override;
void ProcessInput(char* data, size_t* len) override;
};
} // namespace webrtc
#endif // RTC_BASE_SOCKET_ADAPTERS_H_
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