exclude false position OK peer test if comes from recently connected …

…endpoint

libi2pd/SSU2Session.cpp

@@ -2365,10 +2365,11 @@ namespace transport
  if (addr)
  {
  it->second.first->m_Address = addr;
- if (it->second.first->m_State == eSSU2SessionStatePeerTestReceived)
+ auto state = it->second.first->m_State;
+ if (state == eSSU2SessionStatePeerTestReceived || state == eSSU2SessionStateVoidPeerTestReceived)
  {
  // msg 5 already received. send msg 6
- SetRouterStatus (eRouterStatusOK);
+ SetRouterStatus (state == eSSU2SessionStatePeerTestReceived ? eRouterStatusOK : eRouterStatusUnknown);
  it->second.first->m_State = eSSU2SessionStatePeerTest;
  it->second.first->SendPeerTest (6, buf + offset, len - offset, addr->i);
  }
@@ -2426,14 +2427,15 @@ namespace transport
  case 5: // Alice from Charlie 1
  if (htobe64 (((uint64_t)nonce << 32) | nonce) == m_SourceConnID)
  {
+ bool isConnectedRecently = m_Server.IsConnectedRecently (m_RemoteEndpoint);
  if (m_Address)
  {
- SetRouterStatus (eRouterStatusOK);
+ SetRouterStatus (isConnectedRecently ? eRouterStatusUnknown : eRouterStatusOK);
  SendPeerTest (6, buf + offset, len - offset, m_Address->i);
  }
  else
  // we received msg 5 before msg 4
- m_State = eSSU2SessionStatePeerTestReceived;
+ m_State = isConnectedRecently ? eSSU2SessionStateVoidPeerTestReceived : eSSU2SessionStatePeerTestReceived;
  }
  else
  LogPrint (eLogWarning, "SSU2: Peer test 5 nonce mismatch ", nonce, " connID=", m_SourceConnID);

libi2pd/SSU2Session.h

@@ -114,6 +114,7 @@ namespace transport
  eSSU2SessionStateIntroduced,
  eSSU2SessionStatePeerTest,
  eSSU2SessionStatePeerTestReceived, // 5 before 4
+ eSSU2SessionStateVoidPeerTestReceived, // 5 before 4, but from connected recently
  eSSU2SessionStateTokenRequestReceived
  };