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resend relay reponnse if remote router >= 0.9.64

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orignal 2024-10-26 15:30:48 -04:00
parent 87ae9c4b74
commit f611136ea7
2 changed files with 21 additions and 12 deletions
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30
libi2pd/SSU2Session.cpp
View File

@ -83,7 +83,7 @@ namespace transport
std::shared_ptr<const i2p::data::RouterInfo::Address> addr, bool noise):
TransportSession (in_RemoteRouter, SSU2_CONNECT_TIMEOUT),
m_Server (server), m_Address (addr), m_RemoteTransports (0), m_RemotePeerTestTransports (0),
m_DestConnID (0), m_SourceConnID (0), m_State (eSSU2SessionStateUnknown),
m_RemoteVersion (0), m_DestConnID (0), m_SourceConnID (0), m_State (eSSU2SessionStateUnknown),
m_SendPacketNum (0), m_ReceivePacketNum (0), m_LastDatetimeSentPacketNum (0),
m_IsDataReceived (false), m_RTT (SSU2_UNKNOWN_RTT),
m_MsgLocalExpirationTimeout (I2NP_MESSAGE_LOCAL_EXPIRATION_TIMEOUT_MAX),
@ -103,6 +103,7 @@ namespace transport
InitNoiseXKState1 (*m_NoiseState, m_Address->s);
m_RemoteEndpoint = boost::asio::ip::udp::endpoint (m_Address->host, m_Address->port);
m_RemoteTransports = in_RemoteRouter->GetCompatibleTransports (false);
m_RemoteVersion = in_RemoteRouter->GetVersion ();
if (in_RemoteRouter->IsSSU2PeerTesting (true)) m_RemotePeerTestTransports |= i2p::data::RouterInfo::eSSU2V4;
if (in_RemoteRouter->IsSSU2PeerTesting (false)) m_RemotePeerTestTransports |= i2p::data::RouterInfo::eSSU2V6;
RAND_bytes ((uint8_t *)&m_DestConnID, 8);
@ -1185,7 +1186,8 @@ namespace transport
m_RemotePeerTestTransports = 0;
if (ri->IsSSU2PeerTesting (true)) m_RemotePeerTestTransports |= i2p::data::RouterInfo::eSSU2V4;
if (ri->IsSSU2PeerTesting (false)) m_RemotePeerTestTransports |= i2p::data::RouterInfo::eSSU2V6;
m_RemoteVersion = ri->GetVersion ();
// handle other blocks
HandlePayload (decryptedPayload.data () + riSize + 3, decryptedPayload.size () - riSize - 3);
Established ();
@ -2037,11 +2039,13 @@ namespace transport
holePunchSession->SendHolePunch (packet->payload, packet->payloadSize); // relay response block
}
packet->payloadSize += CreatePaddingBlock (packet->payload + packet->payloadSize, m_MaxPayloadSize - packet->payloadSize);
/*uint32_t packetNum = */SendData (packet->payload, packet->payloadSize);
// sometimes Bob doesn't ack this RelayResponse
// TODO: uncomment line below once the problem is resolved
//packet->sendTime = mts;
//m_SentPackets.emplace (packetNum, packet);
uint32_t packetNum = SendData (packet->payload, packet->payloadSize);
if (m_RemoteVersion >= SSU2_MIN_RELAY_RESPONSE_RESEND_VERSION)
{
// sometimes Bob doesn't ack this RelayResponse in older versions
packet->sendTime = i2p::util::GetMillisecondsSinceEpoch ();
m_SentPackets.emplace (packetNum, packet);
}
}
void SSU2Session::HandleRelayResponse (const uint8_t * buf, size_t len)
@ -2076,11 +2080,13 @@ namespace transport
memcpy (payload + 3, buf, len); // forward to Alice as is
packet->payloadSize = len + 3;
packet->payloadSize += CreatePaddingBlock (payload + packet->payloadSize, m_MaxPayloadSize - packet->payloadSize);
/*uint32_t packetNum = */it->second.first->SendData (packet->payload, packet->payloadSize);
// sometimes Alice doesn't ack this RelayResponse
// TODO: uncomment line below once the problem is resolved
//packet->sendTime = i2p::util::GetMillisecondsSinceEpoch ();
//it->second.first->m_SentPackets.emplace (packetNum, packet);
uint32_t packetNum = it->second.first->SendData (packet->payload, packet->payloadSize);
if (m_RemoteVersion >= SSU2_MIN_RELAY_RESPONSE_RESEND_VERSION)
{
// sometimes Alice doesn't ack this RelayResponse in older versions
packet->sendTime = i2p::util::GetMillisecondsSinceEpoch ();
it->second.first->m_SentPackets.emplace (packetNum, packet);
}
}
else
{

3
libi2pd/SSU2Session.h
View File

@ -15,6 +15,7 @@
#include <set>
#include <list>
#include <boost/asio.hpp>
#include "version.h"
#include "Crypto.h"
#include "RouterInfo.h"
#include "RouterContext.h"
@ -55,6 +56,7 @@ namespace transport
const int SSU2_MAX_NUM_ACK_RANGES = 32; // to send
const uint8_t SSU2_MAX_NUM_FRAGMENTS = 64;
const int SSU2_SEND_DATETIME_NUM_PACKETS = 256;
const int SSU2_MIN_RELAY_RESPONSE_RESEND_VERSION = MAKE_VERSION_NUMBER(0, 9, 64); // 0.9.64
// flags
const uint8_t SSU2_FLAG_IMMEDIATE_ACK_REQUESTED = 0x01;
@ -368,6 +370,7 @@ namespace transport
std::shared_ptr<const i2p::data::RouterInfo::Address> m_Address;
boost::asio::ip::udp::endpoint m_RemoteEndpoint;
i2p::data::RouterInfo::CompatibleTransports m_RemoteTransports, m_RemotePeerTestTransports;
int m_RemoteVersion;
uint64_t m_DestConnID, m_SourceConnID;
SSU2SessionState m_State;
uint8_t m_KeyDataSend[64], m_KeyDataReceive[64];