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Resend RelayResponse if relay tag not found. Send Ack block

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orignal 2024-11-03 11:03:12 -05:00
parent 29d77113cc
commit f90386803f
1 changed files with 13 additions and 9 deletions
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22
libi2pd/SSU2Session.cpp
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@ -337,13 +337,14 @@ namespace transport
SetTerminationTimeout (SSU2_TERMINATION_TIMEOUT);
SendQueue ();
transports.PeerConnected (shared_from_this ());
LogPrint(eLogDebug, "SSU2: Session with ", GetRemoteEndpoint (),
" (", i2p::data::GetIdentHashAbbreviation (GetRemoteIdentity ()->GetIdentHash ()), ") established");
if (m_OnEstablished)
{
m_OnEstablished ();
m_OnEstablished = nullptr;
}
LogPrint(eLogDebug, "SSU2: Session with ", GetRemoteEndpoint (),
" (", i2p::data::GetIdentHashAbbreviation (GetRemoteIdentity ()->GetIdentHash ()), ") established");
}
void SSU2Session::Done ()
@ -1944,21 +1945,24 @@ namespace transport
void SSU2Session::HandleRelayRequest (const uint8_t * buf, size_t len)
{
// we are Bob
auto mts = i2p::util::GetMillisecondsSinceEpoch ();
uint32_t nonce = bufbe32toh (buf + 1); // nonce
uint32_t relayTag = bufbe32toh (buf + 5); // relay tag
auto session = m_Server.FindRelaySession (relayTag);
if (!session)
{
LogPrint (eLogWarning, "SSU2: RelayRequest session with relay tag ", relayTag, " not found");
// send relay response back to Alice
uint8_t payload[SSU2_MAX_PACKET_SIZE];
size_t payloadSize = CreateRelayResponseBlock (payload, m_MaxPayloadSize,
eSSU2RelayResponseCodeBobRelayTagNotFound, bufbe32toh (buf + 1), 0, false);
payloadSize += CreatePaddingBlock (payload + payloadSize, m_MaxPayloadSize - payloadSize);
SendData (payload, payloadSize);
auto packet = m_Server.GetSentPacketsPool ().AcquireShared ();
packet->payloadSize = CreateAckBlock (packet->payload, m_MaxPayloadSize);
packet->payloadSize += CreateRelayResponseBlock (packet->payload + packet->payloadSize, m_MaxPayloadSize - packet->payloadSize,
eSSU2RelayResponseCodeBobRelayTagNotFound, nonce, 0, false);
packet->payloadSize += CreatePaddingBlock (packet->payload + packet->payloadSize, m_MaxPayloadSize - packet->payloadSize);
uint32_t packetNum = SendData (packet->payload, packet->payloadSize);
packet->sendTime = mts;
session->m_SentPackets.emplace (packetNum, packet);
return;
}
auto mts = i2p::util::GetMillisecondsSinceEpoch ();
uint32_t nonce = bufbe32toh (buf + 1);
if (session->m_RelaySessions.emplace (nonce, std::make_pair (shared_from_this (), mts/1000)).second)
{
// send relay intro to Charlie