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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 __STUNSERVER_H__
#define __STUNSERVER_H__
#include "talk/base/asyncudpsocket.h"
#include "talk/p2p/base/stun.h"
namespace cricket {
const int STUN_SERVER_PORT = 3478;
class StunServer : public sigslot::has_slots<> {
public:
// Creates a STUN server, which will listen on the given socket.
StunServer(AsyncUDPSocket* socket);
// Removes the STUN server from the socket, but does not delete the socket.
~StunServer();
protected:
// Slot for AsyncSocket.PacketRead:
void OnPacket(
const char* buf, size_t size, const SocketAddress& remote_addr,
AsyncPacketSocket* socket);
// Handlers for the different types of STUN/TURN requests:
void OnBindingRequest(StunMessage* msg, const SocketAddress& addr);
void OnAllocateRequest(StunMessage* msg, const SocketAddress& addr);
void OnSharedSecretRequest(StunMessage* msg, const SocketAddress& addr);
void OnSendRequest(StunMessage* msg, const SocketAddress& addr);
// Sends an error response to the given message back to the user.
void SendErrorResponse(
const StunMessage& msg, const SocketAddress& addr, int error_code,
const char* error_desc);
// Sends the given message to the appropriate destination.
void SendResponse(const StunMessage& msg, const SocketAddress& addr);
private:
AsyncUDPSocket* socket_;
};
} // namespace cricket
#endif // __STUNSERVER_H__
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