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find all introducers at the time

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orignal 2021-04-21 15:41:04 -04:00
parent 9c8c3b9174
commit b5618af308
2 changed files with 22 additions and 17 deletions
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37
libi2pd/SSU.cpp
View file

@ -662,24 +662,29 @@ namespace transport
);
}
std::set<SSUSession *> SSUServer::FindIntroducers (int maxNumIntroducers, bool v4)
std::list<std::shared_ptr<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++)
std::list<std::shared_ptr<SSUSession> > ret;
const auto& sessions = v4 ? m_Sessions : m_SessionsV6;
for (const auto& s : sessions)
{
if (s.second->GetRelayTag () && s.second->GetState () == eSessionStateEstablished &&
ts < s.second->GetCreationTime () + SSU_TO_INTRODUCER_SESSION_DURATION)
ret.push_back (s.second);
}
if ((int)ret.size () > maxNumIntroducers)
{
auto session = v4 ? GetRandomV4Session (filter) : GetRandomV6Session (filter);
if (session)
ret.insert (session.get ());
else
break;
}
// shink ret randomly
int sz = ret.size () - maxNumIntroducers;
for (int i = 0; i < sz; i++)
{
auto ind = rand () % ret.size ();
auto it = ret.begin ();
std::advance (it, ind);
ret.erase (it);
}
}
return ret;
}
@ -770,7 +775,7 @@ namespace transport
if (numIntroducers < SSU_MAX_NUM_INTRODUCERS)
{
// create new
auto sessions = FindIntroducers (SSU_MAX_NUM_INTRODUCERS - numIntroducers, v4);
auto sessions = FindIntroducers (SSU_MAX_NUM_INTRODUCERS, v4); // try to find if duplicates
for (const auto& it1: sessions)
{
const auto& ep = it1->GetRemoteEndpoint ();

2
libi2pd/SSU.h
View file

@ -100,7 +100,7 @@ namespace transport
template<typename Filter>
std::shared_ptr<SSUSession> GetRandomV6Session (Filter filter);
std::set<SSUSession *> FindIntroducers (int maxNumIntroducers, bool v4);
std::list<std::shared_ptr<SSUSession> > FindIntroducers (int maxNumIntroducers, bool v4);
void ScheduleIntroducersUpdateTimer ();
void ScheduleIntroducersUpdateTimerV6 ();
void HandleIntroducersUpdateTimer (const boost::system::error_code& ecode, bool v4);