Avoid querying DNS seeds, if we have open connections.
The goal is to increase independence and privacy.
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2920322871
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2e7009d67b
@ -240,7 +240,8 @@ std::string HelpMessage(HelpMessageMode mode)
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strUsage += " -connect=<ip> " + _("Connect only to the specified node(s)") + "\n";
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strUsage += " -discover " + _("Discover own IP address (default: 1 when listening and no -externalip)") + "\n";
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strUsage += " -dns " + _("Allow DNS lookups for -addnode, -seednode and -connect") + " " + _("(default: 1)") + "\n";
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strUsage += " -dnsseed " + _("Find peers using DNS lookup (default: 1 unless -connect)") + "\n";
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strUsage += " -dnsseed " + _("Query for peer addresses via DNS lookup, if low on addresses (default: 1 unless -connect)") + "\n";
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strUsage += " -forcednsseed " + _("Always query for peer addresses via DNS lookup (default: 0)") + "\n";
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strUsage += " -externalip=<ip> " + _("Specify your own public address") + "\n";
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strUsage += " -listen " + _("Accept connections from outside (default: 1 if no -proxy or -connect)") + "\n";
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strUsage += " -maxconnections=<n> " + _("Maintain at most <n> connections to peers (default: 125)") + "\n";
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12
src/net.cpp
12
src/net.cpp
@ -1221,6 +1221,18 @@ void MapPort(bool)
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void ThreadDNSAddressSeed()
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{
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// goal: only query DNS seeds if address need is acute
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if ((addrman.size() > 0) &&
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(!GetBoolArg("-forcednsseed", false))) {
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MilliSleep(11 * 1000);
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LOCK(cs_vNodes);
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if (vNodes.size() >= 2) {
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LogPrintf("P2P peers available. Skipped DNS seeding.\n");
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return;
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}
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}
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const vector<CDNSSeedData> &vSeeds = Params().DNSSeeds();
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int found = 0;
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