Mirrors/i2pd
2
0
Fork 0
mirror of https://github.com/PurpleI2P/i2pd.git synced 2025-04-29 12:17:49 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

recognize symmetric NAT from peer test msg 7

Browse source
This commit is contained in:
orignal 2024-10-17 21:09:37 -04:00
parent 890fe77b10
commit 1419745a5d
3 changed files with 34 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

29
libi2pd/SSU2OutOfSession.cpp
View file

@ -65,6 +65,12 @@ namespace transport
return true;
}
void SSU2PeerTestSession::HandleAddress (const uint8_t * buf, size_t len)
{
if (!ExtractEndpoint (buf, len, m_OurEndpoint))
LogPrint (eLogWarning, "SSU2: Can't hanlde address block from peer test message");
}
void SSU2PeerTestSession::HandlePeerTest (const uint8_t * buf, size_t len)
{
// msgs 5-7
@ -112,6 +118,29 @@ namespace transport
case 7: // Alice from Charlie 2
{
m_PeerTestResendTimer.cancel (); // no more msg 6 resends
if (m_MsgNumReceived < 5 && m_OurEndpoint.port ()) // msg 5 was not received
{
if (m_OurEndpoint.address ().is_v4 ()) // ipv4
{
if (i2p::context.GetStatus () == eRouterStatusFirewalled)
{
if (m_OurEndpoint.port () != GetServer ().GetPort (true))
i2p::context.SetError (eRouterErrorSymmetricNAT);
else if (i2p::context.GetError () == eRouterErrorSymmetricNAT)
i2p::context.SetError (eRouterErrorNone);
}
}
else
{
if (i2p::context.GetStatusV6 () == eRouterStatusFirewalled)
{
if (m_OurEndpoint.port () != GetServer ().GetPort (false))
i2p::context.SetErrorV6 (eRouterErrorSymmetricNAT);
else if (i2p::context.GetErrorV6 () == eRouterErrorSymmetricNAT)
i2p::context.SetErrorV6 (eRouterErrorNone);
}
}
}
GetServer ().AddConnectedRecently (GetRemoteEndpoint (), i2p::util::GetSecondsSinceEpoch ());
GetServer ().RequestRemoveSession (GetConnID ());
break;