105 lines
2.9 KiB
C++
105 lines
2.9 KiB
C++
/*
|
|
|
|
Copyright (c) 2006, Arvid Norberg & Daniel Wallin
|
|
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 CLOSEST_NODES_050323_HPP
|
|
#define CLOSEST_NODES_050323_HPP
|
|
|
|
#include <vector>
|
|
|
|
#include <libtorrent/kademlia/traversal_algorithm.hpp>
|
|
#include <libtorrent/kademlia/node_id.hpp>
|
|
#include <libtorrent/kademlia/routing_table.hpp>
|
|
#include <libtorrent/kademlia/observer.hpp>
|
|
#include <libtorrent/kademlia/msg.hpp>
|
|
|
|
#include <boost/function.hpp>
|
|
|
|
namespace libtorrent { namespace dht
|
|
{
|
|
|
|
class rpc_manager;
|
|
|
|
// -------- closest nodes -----------
|
|
|
|
class closest_nodes : public traversal_algorithm
|
|
{
|
|
public:
|
|
typedef boost::function<
|
|
void(std::vector<node_entry> const&)
|
|
> done_callback;
|
|
|
|
closest_nodes(
|
|
node_impl& node
|
|
, node_id target
|
|
, done_callback const& callback
|
|
);
|
|
|
|
virtual char const* name() const { return "closest nodes"; }
|
|
|
|
private:
|
|
void done();
|
|
void invoke(node_id const& id, udp::endpoint addr);
|
|
|
|
done_callback m_done_callback;
|
|
};
|
|
|
|
class closest_nodes_observer : public observer
|
|
{
|
|
public:
|
|
closest_nodes_observer(
|
|
boost::intrusive_ptr<traversal_algorithm> const& algorithm
|
|
, node_id self)
|
|
: observer(algorithm->allocator())
|
|
, m_algorithm(algorithm)
|
|
, m_self(self)
|
|
{}
|
|
~closest_nodes_observer();
|
|
|
|
void send(msg& p)
|
|
{
|
|
p.info_hash = m_algorithm->target();
|
|
}
|
|
|
|
void timeout();
|
|
void reply(msg const&);
|
|
void abort() { m_algorithm = 0; }
|
|
|
|
private:
|
|
boost::intrusive_ptr<traversal_algorithm> m_algorithm;
|
|
node_id const m_self;
|
|
};
|
|
|
|
} } // namespace libtorrent::dht
|
|
|
|
#endif // CLOSEST_NODES_050323_HPP
|
|
|