68 lines
2.5 KiB
C++
68 lines
2.5 KiB
C++
/*
|
|
|
|
Copyright (c) 2006, Arvid Norberg
|
|
All rights reserved.
|
|
|
|
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.
|
|
* Neither the name of the author nor the names of its
|
|
contributors may 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.
|
|
|
|
*/
|
|
#ifndef NODE_ID_HPP
|
|
#define NODE_ID_HPP
|
|
|
|
#include <algorithm>
|
|
|
|
#include <boost/cstdint.hpp>
|
|
#include "libtorrent/config.hpp"
|
|
#include "libtorrent/peer_id.hpp"
|
|
#include "libtorrent/assert.hpp"
|
|
#include "libtorrent/address.hpp"
|
|
|
|
namespace libtorrent { namespace dht
|
|
{
|
|
|
|
typedef libtorrent::big_number node_id;
|
|
|
|
// returns the distance between the two nodes
|
|
// using the kademlia XOR-metric
|
|
node_id TORRENT_EXTRA_EXPORT distance(node_id const& n1, node_id const& n2);
|
|
|
|
// returns true if: distance(n1, ref) < distance(n2, ref)
|
|
bool TORRENT_EXTRA_EXPORT compare_ref(node_id const& n1, node_id const& n2, node_id const& ref);
|
|
|
|
// returns n in: 2^n <= distance(n1, n2) < 2^(n+1)
|
|
// usefult for finding out which bucket a node belongs to
|
|
int TORRENT_EXTRA_EXPORT distance_exp(node_id const& n1, node_id const& n2);
|
|
|
|
node_id TORRENT_EXTRA_EXPORT generate_id(address const& external_ip);
|
|
node_id TORRENT_EXTRA_EXPORT generate_random_id();
|
|
|
|
bool TORRENT_EXTRA_EXPORT verify_id(node_id const& nid, address const& source_ip);
|
|
|
|
} } // namespace libtorrent::dht
|
|
|
|
#endif // NODE_ID_HPP
|
|
|