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check if updated router is still introducer. Remove non-introducer sessions from introducers list

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orignal 2024-06-13 18:10:45 -04:00
parent 362edc68ad
commit 6caec6b551
3 changed files with 43 additions and 22 deletions
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29
libi2pd/SSU2.cpp
View File

@ -1104,22 +1104,21 @@ namespace transport
session = it1->second;
excluded.insert (it);
}
if (session && session->IsEstablished () && session->GetRelayTag () && session->IsOutgoing ()) // still session with introducer?
{
if (ts < session->GetCreationTime () + SSU2_TO_INTRODUCER_SESSION_EXPIRATION)
if (session && session->IsEstablished () && session->GetRelayTag () && session->IsOutgoing () && // still session with introducer?
ts < session->GetCreationTime () + SSU2_TO_INTRODUCER_SESSION_EXPIRATION)
{
session->SendKeepAlive ();
if (ts < session->GetCreationTime () + SSU2_TO_INTRODUCER_SESSION_DURATION)
newList.push_back (it);
else
{
session->SendKeepAlive ();
if (ts < session->GetCreationTime () + SSU2_TO_INTRODUCER_SESSION_DURATION)
newList.push_back (it);
else
{
impliedList.push_back (it); // keep in introducers list, but not publish
session = nullptr;
}
}
else
session = nullptr;
}
impliedList.push_back (it); // keep in introducers list, but not publish
session = nullptr;
}
}
else
session = nullptr;
if (!session)
i2p::context.RemoveSSU2Introducer (it, v4);
}

35
libi2pd/SSU2Session.cpp
View File

@ -1575,14 +1575,9 @@ namespace transport
LogPrint (eLogDebug, "SSU2: Options");
break;
case eSSU2BlkRouterInfo:
{
// not from SessionConfirmed, we must add it instantly to use in next block
LogPrint (eLogDebug, "SSU2: RouterInfo");
auto ri = ExtractRouterInfo (buf + offset, size);
if (ri)
i2p::data::netdb.AddRouterInfo (ri->GetBuffer (), ri->GetBufferLen ()); // TODO: add ri
break;
}
HandleRouterInfo (buf + offset, size);
break;
case eSSU2BlkI2NPMessage:
{
LogPrint (eLogDebug, "SSU2: I2NP message");
@ -1742,6 +1737,32 @@ namespace transport
};
}
void SSU2Session::HandleRouterInfo (const uint8_t * buf, size_t len)
{
auto ri = ExtractRouterInfo (buf, len);
if (ri)
{
// not from SessionConfirmed, we must add it instantly to use in next block
auto newRi = i2p::data::netdb.AddRouterInfo (ri->GetBuffer (), ri->GetBufferLen ()); // TODO: add ri
if (newRi)
{
auto remoteIdentity = GetRemoteIdentity ();
if (remoteIdentity && remoteIdentity->GetIdentHash () == newRi->GetIdentHash ())
{
// peer's RouterInfo update
SetRemoteIdentity (newRi->GetIdentity ());
auto address = m_RemoteEndpoint.address ().is_v6 () ? newRi->GetSSU2V6Address () : newRi->GetSSU2V4Address ();
if (address)
{
m_Address = address;
if (IsOutgoing () && m_RelayTag && !address->IsIntroducer ())
m_RelayTag = 0; // not longer introducer
}
}
}
}
}
void SSU2Session::HandleAck (const uint8_t * buf, size_t len)
{
if (m_State == eSSU2SessionStateSessionConfirmedSent)

1
libi2pd/SSU2Session.h
View File

@ -303,6 +303,7 @@ namespace transport
void HandlePayload (const uint8_t * buf, size_t len);
void HandleDateTime (const uint8_t * buf, size_t len);
void HandleRouterInfo (const uint8_t * buf, size_t len);
void HandleAck (const uint8_t * buf, size_t len);
void HandleAckRange (uint32_t firstPacketNum, uint32_t lastPacketNum, uint64_t ts);
void HandleAddress (const uint8_t * buf, size_t len);