forked from premiere/premiere-libtorrent
117 lines
3.4 KiB
C++
117 lines
3.4 KiB
C++
/*
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Copyright (c) 2006-2013, Arvid Norberg
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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 KADEMLIA_NODE_ENTRY_HPP
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#define KADEMLIA_NODE_ENTRY_HPP
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#include "libtorrent/kademlia/node_id.hpp"
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#include "libtorrent/socket.hpp"
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#include "libtorrent/address.hpp"
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#include "libtorrent/union_endpoint.hpp"
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#ifdef TORRENT_DHT_VERBOSE_LOGGING
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#include "libtorrent/time.hpp"
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#endif
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namespace libtorrent { namespace dht
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{
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struct node_entry
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{
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node_entry(node_id const& id_, udp::endpoint ep, int roundtriptime = 0xffff, bool pinged = false)
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: id(id_)
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, endpoint(ep)
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, rtt(roundtriptime & 0xffff)
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, timeout_count(pinged ? 0 : 0xff)
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{
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#ifdef TORRENT_DHT_VERBOSE_LOGGING
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first_seen = time_now();
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#endif
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}
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node_entry(udp::endpoint ep)
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: id(0)
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, endpoint(ep)
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, rtt(0xffff)
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, timeout_count(0xff)
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{
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#ifdef TORRENT_DHT_VERBOSE_LOGGING
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first_seen = time_now();
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#endif
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}
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node_entry()
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: id(0)
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, rtt(0xffff)
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, timeout_count(0xff)
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{
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#ifdef TORRENT_DHT_VERBOSE_LOGGING
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first_seen = time_now();
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#endif
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}
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bool pinged() const { return timeout_count != 0xff; }
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void set_pinged() { if (timeout_count == 0xff) timeout_count = 0; }
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void timed_out() { if (pinged() && timeout_count < 0xfe) ++timeout_count; }
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int fail_count() const { return pinged() ? timeout_count : 0; }
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void reset_fail_count() { if (pinged()) timeout_count = 0; }
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udp::endpoint ep() const { return udp::endpoint(endpoint); }
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bool confirmed() const { return timeout_count == 0; }
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void update_rtt(int new_rtt)
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{
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if (rtt == 0xffff) rtt = new_rtt;
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else rtt = int(rtt) / 3 + int(new_rtt) * 2 / 3;
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}
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address addr() const { return endpoint.address(); }
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int port() const { return endpoint.port; }
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#ifdef TORRENT_DHT_VERBOSE_LOGGING
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ptime first_seen;
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#endif
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node_id id;
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union_endpoint endpoint;
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// the average RTT of this node
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boost::uint16_t rtt;
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// the number of times this node has failed to
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// respond in a row
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boost::uint8_t timeout_count;
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};
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} } // namespace libtorrent::dht
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#endif
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