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Try +1 and +2 existing surfaces for symmetric NATs.

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This commit is contained in:
Adam Ierymenko 2016-02-11 10:39:39 -08:00
parent 0c951b6e56
commit 772551c45d
1 changed files with 16 additions and 6 deletions
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22
node/SelfAwareness.cpp
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@ -150,14 +150,24 @@ std::vector<InetAddress> SelfAwareness::getSymmetricNatPredictions()
// More than one global IPv4 surface means this is a symmetric NAT
std::vector<InetAddress> r;
for(std::set<InetAddress>::iterator i(surfaces.begin());i!=surfaces.end();++i) {
InetAddress nextPort(*i);
unsigned int p = nextPort.port();
if (p >= 65535)
InetAddress ipp(*i);
unsigned int p = ipp.port();
// Try 1+ surface ports
if (p >= 0xffff)
p = 1025;
else ++p;
nextPort.setPort(p);
if (surfaces.count(nextPort) == 0)
r.push_back(nextPort);
ipp.setPort(p);
if ((surfaces.count(ipp) == 0)&&(std::find(r.begin(),r.end(),ipp) == r.end()))
r.push_back(ipp);
// Try 2+ surface ports
if (p >= 0xffff)
p = 1025;
else ++p;
ipp.setPort(p);
if ((surfaces.count(ipp) == 0)&&(std::find(r.begin(),r.end(),ipp) == r.end()))
r.push_back(ipp);
}
return r;
}