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publish ipv6 introducers

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orignal 2021-04-20 20:02:30 -04:00
parent 69afd3a1da
commit ad019da553
4 changed files with 85 additions and 41 deletions
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107
libi2pd/SSU.cpp
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@ -28,8 +28,8 @@ namespace transport
m_ReceiversWork (m_ReceiversService), m_ReceiversWorkV6 (m_ReceiversServiceV6),
m_Endpoint (boost::asio::ip::udp::v4 (), port), m_EndpointV6 (boost::asio::ip::udp::v6 (), port),
m_Socket (m_ReceiversService), m_SocketV6 (m_ReceiversServiceV6),
m_IntroducersUpdateTimer (m_Service), m_PeerTestsCleanupTimer (m_Service),
m_TerminationTimer (m_Service), m_TerminationTimerV6 (m_Service)
m_IntroducersUpdateTimer (m_Service), m_IntroducersUpdateTimerV6 (m_Service),
m_PeerTestsCleanupTimer (m_Service), m_TerminationTimer (m_Service), m_TerminationTimerV6 (m_Service)
{
}
@ -82,6 +82,7 @@ namespace transport
m_ReceiversThread = new std::thread (std::bind (&SSUServer::RunReceivers, this));
m_ReceiversService.post (std::bind (&SSUServer::Receive, this));
ScheduleTermination ();
ScheduleIntroducersUpdateTimer (); // wait for 30 seconds and decide if we need introducers
}
if (context.SupportsV6 ())
{
@ -89,9 +90,9 @@ namespace transport
m_ReceiversThreadV6 = new std::thread (std::bind (&SSUServer::RunReceiversV6, this));
m_ReceiversServiceV6.post (std::bind (&SSUServer::ReceiveV6, this));
ScheduleTerminationV6 ();
ScheduleIntroducersUpdateTimerV6 (); // wait for 30 seconds and decide if we need introducers
}
SchedulePeerTestsCleanupTimer ();
ScheduleIntroducersUpdateTimer (); // wait for 30 seconds and decide if we need introducers
}
void SSUServer::Stop ()
@ -100,6 +101,8 @@ namespace transport
m_IsRunning = false;
m_TerminationTimer.cancel ();
m_TerminationTimerV6.cancel ();
m_IntroducersUpdateTimer.cancel ();
m_IntroducersUpdateTimerV6.cancel ();
m_Service.stop ();
m_Socket.close ();
m_SocketV6.close ();
@ -659,20 +662,19 @@ namespace transport
);
}
std::set<SSUSession *> SSUServer::FindIntroducers (int maxNumIntroducers)
std::set<SSUSession *> SSUServer::FindIntroducers (int maxNumIntroducers, bool v4)
{
uint32_t ts = i2p::util::GetSecondsSinceEpoch ();
std::set<SSUSession *> ret;
auto filter = [&ret, ts](std::shared_ptr<SSUSession> session)->bool
{
return session->GetRelayTag () && !ret.count (session.get ()) &&
session->GetState () == eSessionStateEstablished &&
ts < session->GetCreationTime () + SSU_TO_INTRODUCER_SESSION_DURATION;
};
for (int i = 0; i < maxNumIntroducers; i++)
{
auto session = GetRandomV4Session (
[&ret, ts](std::shared_ptr<SSUSession> session)->bool
{
return session->GetRelayTag () && !ret.count (session.get ()) &&
session->GetState () == eSessionStateEstablished &&
ts < session->GetCreationTime () + SSU_TO_INTRODUCER_SESSION_DURATION;
}
);
auto session = v4 ? GetRandomV4Session (filter) : GetRandomV6Session (filter);
if (session)
{
ret.insert (session.get ());
@ -687,39 +689,73 @@ namespace transport
m_IntroducersUpdateTimer.cancel ();
m_IntroducersUpdateTimer.expires_from_now (boost::posix_time::seconds(SSU_KEEP_ALIVE_INTERVAL/2));
m_IntroducersUpdateTimer.async_wait (std::bind (&SSUServer::HandleIntroducersUpdateTimer,
this, std::placeholders::_1));
this, std::placeholders::_1, true));
}
void SSUServer::ScheduleIntroducersUpdateTimer ()
{
m_IntroducersUpdateTimer.expires_from_now (boost::posix_time::seconds(SSU_KEEP_ALIVE_INTERVAL));
m_IntroducersUpdateTimer.async_wait (std::bind (&SSUServer::HandleIntroducersUpdateTimer,
this, std::placeholders::_1));
this, std::placeholders::_1, true));
}
void SSUServer::HandleIntroducersUpdateTimer (const boost::system::error_code& ecode)
void SSUServer::RescheduleIntroducersUpdateTimerV6 ()
{
m_IntroducersUpdateTimerV6.cancel ();
m_IntroducersUpdateTimerV6.expires_from_now (boost::posix_time::seconds(SSU_KEEP_ALIVE_INTERVAL/2));
m_IntroducersUpdateTimerV6.async_wait (std::bind (&SSUServer::HandleIntroducersUpdateTimer,
this, std::placeholders::_1, false));
}
void SSUServer::ScheduleIntroducersUpdateTimerV6 ()
{
m_IntroducersUpdateTimerV6.expires_from_now (boost::posix_time::seconds(SSU_KEEP_ALIVE_INTERVAL));
m_IntroducersUpdateTimerV6.async_wait (std::bind (&SSUServer::HandleIntroducersUpdateTimer,
this, std::placeholders::_1, false));
}
void SSUServer::HandleIntroducersUpdateTimer (const boost::system::error_code& ecode, bool v4)
{
if (ecode != boost::asio::error::operation_aborted)
{
// timeout expired
if (i2p::context.GetStatus () == eRouterStatusTesting)
{
// we still don't know if we need introducers
ScheduleIntroducersUpdateTimer ();
return;
}
if (i2p::context.GetStatus () != eRouterStatusFirewalled)
if (v4)
{
// we don't need introducers
m_Introducers.clear ();
return;
if (i2p::context.GetStatus () == eRouterStatusTesting)
{
// we still don't know if we need introducers
ScheduleIntroducersUpdateTimer ();
return;
}
if (i2p::context.GetStatus () != eRouterStatusFirewalled)
{
// we don't need introducers
m_Introducers.clear ();
return;
}
}
else
{
if (i2p::context.GetStatusV6 () == eRouterStatusTesting)
{
// we still don't know if we need introducers
ScheduleIntroducersUpdateTimerV6 ();
return;
}
if (i2p::context.GetStatusV6 () != eRouterStatusFirewalled)
{
// we don't need introducers
m_IntroducersV6.clear ();
return;
}
}
// we are firewalled
if (!i2p::context.IsUnreachable ()) i2p::context.SetUnreachable (true, false); // ipv4
if (!i2p::context.IsUnreachable () || !v4) i2p::context.SetUnreachable (v4, !v4);
std::list<boost::asio::ip::udp::endpoint> newList;
size_t numIntroducers = 0;
uint32_t ts = i2p::util::GetSecondsSinceEpoch ();
for (const auto& it : m_Introducers)
auto& introducers = v4 ? m_Introducers : m_IntroducersV6;
for (const auto& it : introducers)
{
auto session = FindSession (it);
if (session && ts < session->GetCreationTime () + SSU_TO_INTRODUCER_SESSION_DURATION)
@ -735,8 +771,8 @@ namespace transport
if (numIntroducers < SSU_MAX_NUM_INTRODUCERS)
{
// create new
auto introducers = FindIntroducers (SSU_MAX_NUM_INTRODUCERS);
for (const auto& it1: introducers)
auto sessions = FindIntroducers (SSU_MAX_NUM_INTRODUCERS, true);
for (const auto& it1: sessions)
{
const auto& ep = it1->GetRemoteEndpoint ();
i2p::data::RouterInfo::Introducer introducer;
@ -752,11 +788,11 @@ namespace transport
}
}
}
m_Introducers = newList;
if (m_Introducers.size () < SSU_MAX_NUM_INTRODUCERS)
introducers = newList;
if (introducers.size () < SSU_MAX_NUM_INTRODUCERS)
{
std::set<std::shared_ptr<const i2p::data::RouterInfo> > requested;
for (auto i = m_Introducers.size (); i < SSU_MAX_NUM_INTRODUCERS; i++)
for (auto i = introducers.size (); i < SSU_MAX_NUM_INTRODUCERS; i++)
{
auto introducer = i2p::data::netdb.GetRandomIntroducer ();
if (introducer && !requested.count (introducer)) // not requested already
@ -765,7 +801,7 @@ namespace transport
if (address && !address->host.is_unspecified ())
{
boost::asio::ip::udp::endpoint ep (address->host, address->port);
if (std::find (m_Introducers.begin (), m_Introducers.end (), ep) == m_Introducers.end ()) // not connected yet
if (std::find (introducers.begin (), introducers.end (), ep) == introducers.end ()) // not connected yet
{
CreateDirectSession (introducer, ep, false);
requested.insert (introducer);
@ -774,7 +810,10 @@ namespace transport
}
}
}
ScheduleIntroducersUpdateTimer ();
if (v4)
ScheduleIntroducersUpdateTimer ();
else
ScheduleIntroducersUpdateTimerV6 ();
}
}