94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
/*
|
|
|
|
Copyright (c) 2014, Steven Siloti
|
|
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 TORRENT_DIRECT_REQUEST_HPP
|
|
#define TORRENT_DIRECT_REQUEST_HPP
|
|
|
|
#include <libtorrent/kademlia/msg.hpp>
|
|
#include <libtorrent/kademlia/traversal_algorithm.hpp>
|
|
|
|
namespace libtorrent { namespace dht {
|
|
|
|
struct direct_traversal : traversal_algorithm
|
|
{
|
|
typedef std::function<void(dht::msg const&)> message_callback;
|
|
|
|
direct_traversal(node& node
|
|
, node_id const& target
|
|
, message_callback cb)
|
|
: traversal_algorithm(node, target)
|
|
, m_cb(cb)
|
|
{}
|
|
|
|
virtual char const* name() const { return "direct_traversal"; }
|
|
|
|
void invoke_cb(msg const& m)
|
|
{
|
|
if (m_cb)
|
|
{
|
|
m_cb(m);
|
|
m_cb = nullptr;
|
|
done();
|
|
}
|
|
}
|
|
|
|
protected:
|
|
message_callback m_cb;
|
|
};
|
|
|
|
struct direct_observer : observer
|
|
{
|
|
direct_observer(std::shared_ptr<traversal_algorithm> const& algo
|
|
, udp::endpoint const& ep, node_id const& id)
|
|
: observer(algo, ep, id)
|
|
{}
|
|
|
|
virtual void reply(msg const& m)
|
|
{
|
|
flags |= flag_done;
|
|
static_cast<direct_traversal*>(algorithm())->invoke_cb(m);
|
|
}
|
|
|
|
virtual void timeout()
|
|
{
|
|
if (flags & flag_done) return;
|
|
flags |= flag_done;
|
|
bdecode_node e;
|
|
msg m(e, target_ep());
|
|
static_cast<direct_traversal*>(algorithm())->invoke_cb(m);
|
|
}
|
|
};
|
|
|
|
}} // namespace libtorrent::dht
|
|
|
|
#endif //TORRENT_DIRECT_REQUEST_HPP
|