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/*
This file is part of GNUnet.
Copyright (C) 2011 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.
*/
/**
* @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 type type of the block
* @param expiration_time when does the content expire
* @param key key for the content
* @param put_path_length number of entries in @a put_path
* @param put_path peers the original PUT traversed (if tracked)
* @param get_path_length number of entries in @a get_path
* @param get_path peers this reply has traversed so far (if tracked)
* @param data payload of the reply
* @param data_size number of bytes in @a data
*/
void
GDS_ROUTING_process (enum GNUNET_BLOCK_Type type,
struct GNUNET_TIME_Absolute expiration_time,
const struct GNUNET_HashCode *key,
unsigned int put_path_length,
const struct GNUNET_PeerIdentity *put_path,
unsigned int get_path_length,
const struct GNUNET_PeerIdentity *get_path,
const void *data,
size_t data_size);
/**
* 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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