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/*
* libjingle
* Copyright 2004--2005, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __ASYNCTCPSOCKET_H__
#define __ASYNCTCPSOCKET_H__
#include "talk/base/asyncpacketsocket.h"
namespace cricket {
// Simulates UDP semantics over TCP. Send and Recv packet sizes
// are preserved, and drops packets silently on Send, rather than
// buffer them in user space.
class AsyncTCPSocket : public AsyncPacketSocket {
public:
AsyncTCPSocket(AsyncSocket* socket);
virtual ~AsyncTCPSocket();
virtual int Send(const void *pv, size_t cb);
virtual int SendTo(const void *pv, size_t cb, const SocketAddress& addr);
sigslot::signal1<AsyncTCPSocket*> SignalConnect;
sigslot::signal2<AsyncTCPSocket*,int> SignalClose;
protected:
int SendRaw(const void * pv, size_t cb);
virtual void ProcessInput(char * data, size_t& len);
private:
char* inbuf_, * outbuf_;
size_t insize_, inpos_, outsize_, outpos_;
int Flush();
// Called by the underlying socket
void OnConnectEvent(AsyncSocket* socket);
void OnReadEvent(AsyncSocket* socket);
void OnWriteEvent(AsyncSocket* socket);
void OnCloseEvent(AsyncSocket* socket, int error);
};
} // namespace cricket
#endif // __ASYNCSTCPOCKET_H__
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