117 lines
3.4 KiB
C++
117 lines
3.4 KiB
C++
/*
|
|
|
|
Copyright (c) 2006-2014, 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 KADEMLIA_NODE_ENTRY_HPP
|
|
#define KADEMLIA_NODE_ENTRY_HPP
|
|
|
|
#include "libtorrent/kademlia/node_id.hpp"
|
|
#include "libtorrent/socket.hpp"
|
|
#include "libtorrent/address.hpp"
|
|
#include "libtorrent/union_endpoint.hpp"
|
|
|
|
#ifdef TORRENT_DHT_VERBOSE_LOGGING
|
|
#include "libtorrent/time.hpp"
|
|
#endif
|
|
|
|
namespace libtorrent { namespace dht
|
|
{
|
|
|
|
struct node_entry
|
|
{
|
|
node_entry(node_id const& id_, udp::endpoint ep, int roundtriptime = 0xffff, bool pinged = false)
|
|
: id(id_)
|
|
, endpoint(ep)
|
|
, rtt(roundtriptime & 0xffff)
|
|
, timeout_count(pinged ? 0 : 0xff)
|
|
{
|
|
#ifdef TORRENT_DHT_VERBOSE_LOGGING
|
|
first_seen = time_now();
|
|
#endif
|
|
}
|
|
|
|
node_entry(udp::endpoint ep)
|
|
: id(0)
|
|
, endpoint(ep)
|
|
, rtt(0xffff)
|
|
, timeout_count(0xff)
|
|
{
|
|
#ifdef TORRENT_DHT_VERBOSE_LOGGING
|
|
first_seen = time_now();
|
|
#endif
|
|
}
|
|
|
|
node_entry()
|
|
: id(0)
|
|
, rtt(0xffff)
|
|
, timeout_count(0xff)
|
|
{
|
|
#ifdef TORRENT_DHT_VERBOSE_LOGGING
|
|
first_seen = time_now();
|
|
#endif
|
|
}
|
|
|
|
bool pinged() const { return timeout_count != 0xff; }
|
|
void set_pinged() { if (timeout_count == 0xff) timeout_count = 0; }
|
|
void timed_out() { if (pinged() && timeout_count < 0xfe) ++timeout_count; }
|
|
int fail_count() const { return pinged() ? timeout_count : 0; }
|
|
void reset_fail_count() { if (pinged()) timeout_count = 0; }
|
|
udp::endpoint ep() const { return udp::endpoint(endpoint); }
|
|
bool confirmed() const { return timeout_count == 0; }
|
|
void update_rtt(int new_rtt)
|
|
{
|
|
if (rtt == 0xffff) rtt = new_rtt;
|
|
else rtt = int(rtt) / 3 + int(new_rtt) * 2 / 3;
|
|
}
|
|
address addr() const { return endpoint.address(); }
|
|
int port() const { return endpoint.port; }
|
|
|
|
#ifdef TORRENT_DHT_VERBOSE_LOGGING
|
|
ptime first_seen;
|
|
#endif
|
|
|
|
node_id id;
|
|
|
|
union_endpoint endpoint;
|
|
|
|
// the average RTT of this node
|
|
boost::uint16_t rtt;
|
|
|
|
// the number of times this node has failed to
|
|
// respond in a row
|
|
boost::uint8_t timeout_count;
|
|
};
|
|
|
|
} } // namespace libtorrent::dht
|
|
|
|
#endif
|
|
|