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detect MTU for some known ipv6 tunnel brokers

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orignal
2022-07-14 13:48:28 -04:00
parent 14a6947b02
commit 014e4b0e1d
3 changed files with 24 additions and 3 deletions
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4
libi2pd/RouterContext.cpp
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@@ -428,13 +428,13 @@ namespace i2p
if (mtu)
{
LogPrint (eLogDebug, "Router: Our v6 MTU=", mtu);
int maxMTU = address->IsSSU2 () ? 1500 : 1488; // must be multiple of 16 for SSU1
int maxMTU = i2p::util::net::GetMaxMTU (host.to_v6 ());
if (mtu > maxMTU)
{
mtu = maxMTU;
LogPrint(eLogWarning, "Router: MTU dropped to upper limit of ", maxMTU, " bytes");
}
else if (mtu && !address->IsSSU2 ()) // SSU1
if (mtu && !address->IsSSU2 ()) // SSU1
mtu = (mtu >> 4) << 4; // round to multiple of 16
if (address->ssu) address->ssu->mtu = mtu;
}