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use min hole punch interval for connection attempts

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orignal 2024-10-24 18:49:11 -04:00
parent 26901e2945
commit 500afe745f
3 changed files with 10 additions and 9 deletions
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12
libi2pd/SSU2.cpp
View File

@ -216,16 +216,16 @@ namespace transport
return ep.port ();
}
bool SSU2Server::IsConnectedRecently (const boost::asio::ip::udp::endpoint& ep)
bool SSU2Server::IsConnectedRecently (const boost::asio::ip::udp::endpoint& ep, bool max)
{
if (!ep.port () || ep.address ().is_unspecified ()) return false;
std::lock_guard<std::mutex> l(m_ConnectedRecentlyMutex);
auto it = m_ConnectedRecently.find (ep);
if (it != m_ConnectedRecently.end ())
{
if (i2p::util::GetSecondsSinceEpoch () <= it->second + SSU2_HOLE_PUNCH_EXPIRATION)
if (i2p::util::GetSecondsSinceEpoch () <= it->second + (max ? SSU2_MAX_HOLE_PUNCH_EXPIRATION : SSU2_MIN_HOLE_PUNCH_EXPIRATION))
return true;
else
else if (max)
m_ConnectedRecently.erase (it);
}
return false;
@ -234,7 +234,7 @@ namespace transport
void SSU2Server::AddConnectedRecently (const boost::asio::ip::udp::endpoint& ep, uint64_t ts)
{
if (!ep.port () || ep.address ().is_unspecified () ||
i2p::util::GetSecondsSinceEpoch () > ts + SSU2_HOLE_PUNCH_EXPIRATION) return;
i2p::util::GetSecondsSinceEpoch () > ts + SSU2_MAX_HOLE_PUNCH_EXPIRATION) return;
std::lock_guard<std::mutex> l(m_ConnectedRecentlyMutex);
auto [it, added] = m_ConnectedRecently.try_emplace (ep, ts);
if (!added && ts > it->second)
@ -885,7 +885,7 @@ namespace transport
{
// router doesn't publish endpoint, but we connected before and hole punch might be alive
auto ep = router->GetProfile ()->GetLastEndpoint ();
if (IsConnectedRecently (ep))
if (IsConnectedRecently (ep, false))
{
if (CheckPendingOutgoingSession (ep, peerTest)) return false;
session->SetRemoteEndpoint (ep);
@ -1148,7 +1148,7 @@ namespace transport
for (auto it = m_ConnectedRecently.begin (); it != m_ConnectedRecently.end (); )
{
if (ts > it->second + SSU2_HOLE_PUNCH_EXPIRATION)
if (ts > it->second + SSU2_MAX_HOLE_PUNCH_EXPIRATION)
it = m_ConnectedRecently.erase (it);
else
it++;

5
libi2pd/SSU2.h
View File

@ -42,7 +42,8 @@ namespace transport
const int SSU2_KEEP_ALIVE_INTERVAL = 15; // in seconds
const int SSU2_KEEP_ALIVE_INTERVAL_VARIANCE = 4; // in seconds
const int SSU2_PROXY_CONNECT_RETRY_TIMEOUT = 30; // in seconds
const int SSU2_HOLE_PUNCH_EXPIRATION = 150; // in seconds
const int SSU2_MIN_HOLE_PUNCH_EXPIRATION = 45; // in seconds
const int SSU2_MAX_HOLE_PUNCH_EXPIRATION = 181; // in seconds
const size_t SSU2_MAX_NUM_PACKETS_PER_BATCH = 64;
class SSU2Server: private i2p::util::RunnableServiceWithWork
@ -77,7 +78,7 @@ namespace transport
bool UsesProxy () const { return m_IsThroughProxy; };
bool IsSupported (const boost::asio::ip::address& addr) const;
uint16_t GetPort (bool v4) const;
bool IsConnectedRecently (const boost::asio::ip::udp::endpoint& ep);
bool IsConnectedRecently (const boost::asio::ip::udp::endpoint& ep, bool max = true);
void AddConnectedRecently (const boost::asio::ip::udp::endpoint& ep, uint64_t ts);
std::mt19937& GetRng () { return m_Rng; }
bool IsMaxNumIntroducers (bool v4) const { return (v4 ? m_Introducers.size () : m_IntroducersV6.size ()) >= SSU2_MAX_NUM_INTRODUCERS; }

2
libi2pd/Transports.cpp
View File

@ -685,7 +685,7 @@ namespace transport
if (ep.address ().is_v4 ())
{
if ((supportedTransports & i2p::data::RouterInfo::eSSU2V4) &&
m_SSU2Server->IsConnectedRecently (ep))
m_SSU2Server->IsConnectedRecently (ep, false))
peer->priority.push_back (i2p::data::RouterInfo::eSSU2V4);
}
else if (ep.address ().is_v6 ())