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82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#include <ripple/peerfinder/PeerfinderManager.h>
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#include <ripple/peerfinder/impl/Tuning.h>
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namespace ripple {
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namespace PeerFinder {
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Config::Config()
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: maxPeers (Tuning::defaultMaxPeers)
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, outPeers (calcOutPeers ())
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, wantIncoming (true)
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, autoConnect (true)
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, listeningPort (0)
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, ipLimit (0)
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{
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}
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double Config::calcOutPeers () const
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{
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return std::max (
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maxPeers * Tuning::outPercent * 0.01,
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double (Tuning::minOutCount));
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}
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void Config::applyTuning ()
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{
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if (maxPeers < Tuning::minOutCount)
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maxPeers = Tuning::minOutCount;
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outPeers = calcOutPeers ();
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auto const inPeers = maxPeers - outPeers;
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if (ipLimit == 0)
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{
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// Unless a limit is explicitly set, we allow between
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// 2 and 5 connections from non RFC-1918 "private"
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// IP addresses.
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ipLimit = 2;
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if (inPeers > Tuning::defaultMaxPeers)
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ipLimit += std::min(5,
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static_cast<int>(inPeers / Tuning::defaultMaxPeers));
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}
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// We don't allow a single IP to consume all incoming slots,
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// unless we only have one incoming slot available.
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ipLimit = std::max(1,
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std::min(ipLimit, static_cast<int>(inPeers / 2)));
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}
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void Config::onWrite (beast::PropertyStream::Map &map)
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{
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map ["max_peers"] = maxPeers;
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map ["out_peers"] = outPeers;
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map ["want_incoming"] = wantIncoming;
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map ["auto_connect"] = autoConnect;
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map ["port"] = listeningPort;
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map ["features"] = features;
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map ["ip_limit"] = ipLimit;
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}
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}
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}
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