forked from 0ad/0ad
vladislavbelov
ffc4a56b9f
Fixes #6846 Differential Revision: https://code.wildfiregames.com/D5185 This was SVN commit r27965.
54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
/* Copyright (C) 2021 Wildfire Games.
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* Copyright (C) 2013-2016 SuperTuxKart-Team.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef STUNCLIENT_H
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#define STUNCLIENT_H
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#include "ps/CStrForward.h"
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#include <string>
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typedef struct _ENetHost ENetHost;
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namespace StunClient
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{
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/**
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* Return the publicly accessible IP of the given ENet host/socket.
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* This is done by contacting STUN server.
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* The return IP & port should only be considered valid for the give host/socket.
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*/
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bool FindPublicIP(ENetHost& enetClient, CStr8& ip, u16& port);
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/**
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* Send a message to the target server with the given ENet host/socket.
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* This will open a port on the local gateway (if any) to receive trafic,
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* allowing the recipient to answer (thus 'punching a hole' in the NAT).
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* NB: this assumes consistent NAT, i.e. the outgoing port is always the same for the given client,
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* thus allowing the IP discovered via STUN to be sent to the target server.
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*/
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void SendHolePunchingMessages(ENetHost& enetClient, const std::string& serverAddress, u16 serverPort);
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/**
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* Return the local IP.
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* Technically not a STUN method, but convenient to define here.
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*/
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bool FindLocalIP(CStr8& ip);
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}
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#endif // STUNCLIENT_H
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