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/*
This file is part of GNUnet.
(C) 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
GNUnet 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; either version 3, or (at your
option) any later version.
GNUnet 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 GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file nat/nat.h
* @brief Library handling UPnP and NAT-PMP port forwarding and
* external IP address retrieval
* @author Milan Bouchet-Valat
*/
#ifndef NAT_H
#define NAT_H
#define DEBUG GNUNET_YES
/**
* Used to communicate with the UPnP and NAT-PMP plugins
*/
enum GNUNET_NAT_PortState
{
GNUNET_NAT_PORT_ERROR,
/**
* the port isn't forwarded
*/
GNUNET_NAT_PORT_UNMAPPED,
/**
* we're cancelling the port forwarding
*/
GNUNET_NAT_PORT_UNMAPPING,
/**
* we're in the process of trying to set up port forwarding
*/
GNUNET_NAT_PORT_MAPPING,
/**
* we've successfully forwarded the port
*/
GNUNET_NAT_PORT_MAPPED
};
/**
* Compare the sin(6)_addr fields of AF_INET or AF_INET(6) sockaddr.
*
* @param a first sockaddr
* @param b second sockaddr
* @return 0 if addresses are equal, non-null value otherwise
*/
int GNUNET_NAT_cmp_addr (const struct sockaddr *a,
const struct sockaddr *b);
#endif
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