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/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file tcp_stun.h Basic functions to receive and send TCP packets to/from the STUN server.
*/
#ifndef NETWORK_CORE_TCP_STUN_H
#define NETWORK_CORE_TCP_STUN_H
#include "os_abstraction.h"
#include "tcp.h"
#include "packet.h"
/** Enum with all types of TCP STUN packets. The order MUST not be changed. **/
enum PacketStunType {
PACKET_STUN_SERCLI_STUN, ///< Send a STUN request to the STUN server.
PACKET_STUN_END, ///< Must ALWAYS be on the end of this list!! (period)
};
/** Base socket handler for all STUN TCP sockets. */
class NetworkStunSocketHandler : public NetworkTCPSocketHandler {
protected:
bool ReceiveInvalidPacket(PacketStunType type);
/**
* Send a STUN request to the STUN server letting the Game Coordinator know
* what our actually public IP:port is.
*
* uint8 Game Coordinator protocol version.
* string Token to track the current STUN request.
* uint8 Which interface number this is (for example, IPv4 or IPv6).
* The Game Coordinator relays this number back in later packets.
*
* @param p The packet that was just received.
* @return True upon success, otherwise false.
*/
virtual bool Receive_SERCLI_STUN(Packet *p);
public:
/**
* Create a new cs socket handler for a given cs.
* @param s the socket we are connected with.
* @param address IP etc. of the client.
*/
NetworkStunSocketHandler(SOCKET s = INVALID_SOCKET) : NetworkTCPSocketHandler(s) {}
};
#endif /* NETWORK_CORE_TCP_STUN_H */
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