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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 _ASYNCSOCKET_H_
#define _ASYNCSOCKET_H_
#include "talk/base/sigslot.h"
namespace talk_base {
class SocketAddress;
}
namespace buzz {
class AsyncSocket {
public:
enum State {
STATE_CLOSED = 0, //!< Socket is not open.
STATE_CLOSING, //!< Socket is closing but can have buffered data
STATE_CONNECTING, //!< In the process of
STATE_OPEN, //!< Socket is connected
#if defined(FEATURE_ENABLE_SSL)
STATE_TLS_CONNECTING, //!< Establishing TLS connection
STATE_TLS_OPEN, //!< TLS connected
#endif
};
enum Error {
ERROR_NONE = 0, //!< No error
ERROR_WINSOCK, //!< Winsock error
ERROR_DNS, //!< Couldn't resolve host name
ERROR_WRONGSTATE, //!< Call made while socket is in the wrong state
#if defined(FEATURE_ENABLE_SSL)
ERROR_SSL, //!< Something went wrong with OpenSSL
#endif
};
virtual ~AsyncSocket() {}
virtual State state() = 0;
virtual Error error() = 0;
virtual int GetError() = 0; // winsock error code
virtual bool Connect(const talk_base::SocketAddress& addr) = 0;
virtual bool Read(char * data, size_t len, size_t* len_read) = 0;
virtual bool Write(const char * data, size_t len) = 0;
virtual bool Close() = 0;
#if defined(FEATURE_ENABLE_SSL)
// We allow matching any passed domain. This allows us to avoid
// handling the valuable certificates for logins into proxies. If
// both names are passed as empty, we do not require a match.
virtual bool StartTls(const std::string & domainname) = 0;
#endif
sigslot::signal0<> SignalConnected;
sigslot::signal0<> SignalSSLConnected;
sigslot::signal0<> SignalClosed;
sigslot::signal0<> SignalRead;
sigslot::signal0<> SignalError;
};
}
#endif
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