/*
     This file is part of GNUnet.
     Copyright (C) 2013 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 cadet/gnunet-service-cadet_dht.h
 * @brief cadet service; dealing with DHT requests and results
 * @author Bartlomiej Polot
 *
 * All functions in this file should use the prefix GMD (Gnunet Cadet Dht)
 */

#ifndef GNUNET_SERVICE_CADET_DHT_H
#define GNUNET_SERVICE_CADET_DHT_H

#ifdef __cplusplus
extern "C"
{
#if 0                           /* keep Emacsens' auto-indent happy */
}
#endif
#endif

#include "platform.h"
#include "gnunet_util_lib.h"

struct GCD_search_handle;


/**
 * Callback called on each path found over the DHT.
 *
 * @param cls Closure.
 * @param path An unchecked, unoptimized path to the target node.
 *             After callback will no longer be valid!
 */
typedef void (*GCD_search_callback) (void *cls,
                                     const struct CadetPeerPath *path);

/******************************************************************************/
/********************************    API    ***********************************/
/******************************************************************************/

/**
 * Initialize the DHT subsystem.
 *
 * @param c Configuration.
 */
void
GCD_init (const struct GNUNET_CONFIGURATION_Handle *c);

/**
 * Shut down the DHT subsystem.
 */
void
GCD_shutdown (void);


struct GCD_search_handle *
GCD_search (const struct GNUNET_PeerIdentity *peer_id,
            GCD_search_callback callback, void *cls);


void
GCD_search_stop (struct GCD_search_handle *h);

#if 0                           /* keep Emacsens' auto-indent happy */
{
#endif
#ifdef __cplusplus
}
#endif

/* ifndef GNUNET_CADET_SERVICE_LOCAL_H */
#endif
/* end of gnunet-cadet-service_LOCAL.h */