95 lines
2.7 KiB
C++
95 lines
2.7 KiB
C++
/*
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Copyright (c) 2014, Steven Siloti
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TORRENT_DIRECT_REQUEST_HPP
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#define TORRENT_DIRECT_REQUEST_HPP
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#include <libtorrent/kademlia/msg.hpp>
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#include <libtorrent/kademlia/traversal_algorithm.hpp>
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namespace libtorrent { namespace dht
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{
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struct direct_traversal : traversal_algorithm
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{
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typedef std::function<void(dht::msg const&)> message_callback;
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direct_traversal(node& node
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, node_id const& target
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, message_callback cb)
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: traversal_algorithm(node, target)
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, m_cb(cb)
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{}
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virtual char const* name() const { return "direct_traversal"; }
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void invoke_cb(msg const& m)
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{
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if (m_cb)
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{
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m_cb(m);
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m_cb = nullptr;
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done();
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}
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}
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protected:
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message_callback m_cb;
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};
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struct direct_observer : observer
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{
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direct_observer(std::shared_ptr<traversal_algorithm> const& algo
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, udp::endpoint const& ep, node_id const& id)
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: observer(algo, ep, id)
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{}
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virtual void reply(msg const& m)
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{
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flags |= flag_done;
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static_cast<direct_traversal*>(algorithm())->invoke_cb(m);
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}
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virtual void timeout()
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{
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if (flags & flag_done) return;
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flags |= flag_done;
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bdecode_node e;
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msg m(e, target_ep());
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static_cast<direct_traversal*>(algorithm())->invoke_cb(m);
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}
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};
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}} // namespace libtorrent::dht
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#endif //TORRENT_DIRECT_REQUEST_HPP
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