/*
     This file is part of GNUnet.
     (C) 2009, 2010 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.
*/

/*
 * Code in this file is originally based on the miniupnp library.
 * Copyright (c) 2005-2009, Thomas BERNARD. All rights reserved.
 *
 * Original licence:
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *   * Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *   * 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.
 *   * 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 COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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.
 */

/**
 * @file nat/upnp-discover.h
 * @brief Look for UPnP IGD devices
 *
 * @author Milan Bouchet-Valat
 */
#ifndef UPNPC_H
#define UPNPC_H

#include "platform.h"
#include "gnunet_common.h"
#include "gnunet_util_lib.h"
#include "upnp-commands.h"

typedef void (*UPNP_discover_cb_) (const char *control_urls,
                                   const char *service_type, void *cls);

/**
 * Search for UPnP Internet Gateway Devices (IGD) on a given network interface.
 * If several devices are found, a device that is connected to the WAN
 * is returned first (if any).
 *
 * @param multicastif network interface to send discovery messages, or NULL
 * @param addr address used to send messages on multicastif, or NULL
 * @param caller_cb user function to call when done
 * @param caller_cls closure to pass to caller_cb
 */
void UPNP_discover_ (const char *multicastif,
                     const struct sockaddr *addr,
                     UPNP_discover_cb_ caller_cb, void *caller_cls);

#endif