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/*
This file is part of GNUnet.
Copyright (C) 2011, 2022 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License,
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
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
SPDX-License-Identifier: AGPL3.0-or-later
*/
/**
* @file dht/gnunet-service-dht_routing.h
* @brief GNUnet DHT tracking of requests for routing replies
* @author Christian Grothoff
*/
#ifndef GNUNET_SERVICE_DHT_ROUTING_H
#define GNUNET_SERVICE_DHT_ROUTING_H
#include "gnunet_util_lib.h"
#include "gnunet_block_lib.h"
#include "gnunet_dht_service.h"
/**
* Handle a reply (route to origin). Only forwards the reply back to
* other peers waiting for it. Does not do local caching or
* forwarding to local clients. Essentially calls
* GDS_NEIGHBOURS_handle_reply() for all peers that sent us a matching
* request recently.
*
* @param bd block details
* @param query_hash query used in the inquiry
* @param get_path_length number of entries in @a get_path
* @param get_path peers this reply has traversed so far (if tracked)
*/
void
GDS_ROUTING_process (const struct GDS_DATACACHE_BlockData *bd,
const struct GNUNET_HashCode *query_hash,
unsigned int get_path_length,
const struct GNUNET_DHT_PathElement *get_path);
/**
* Add a new entry to our routing table.
*
* @param sender peer that originated the request
* @param type type of the block
* @param bg block group to evaluate replies, henceforth owned by routing
* @param options options for processing
* @param key key for the content
* @param xquery extended query
* @param xquery_size number of bytes in @a xquery
*/
void
GDS_ROUTING_add (const struct GNUNET_PeerIdentity *sender,
enum GNUNET_BLOCK_Type type,
struct GNUNET_BLOCK_Group *bg,
enum GNUNET_DHT_RouteOption options,
const struct GNUNET_HashCode *key,
const void *xquery,
size_t xquery_size);
/**
* Initialize routing subsystem.
*/
void
GDS_ROUTING_init (void);
/**
* Shutdown routing subsystem.
*/
void
GDS_ROUTING_done (void);
#endif
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