delete ECIESX25519 session without destination shortly

libi2pd/ECIESX25519AEADRatchetSession.cpp

@@ -1112,6 +1112,7 @@ namespace garlic
 	bool ECIESX25519AEADRatchetSession::CheckExpired (uint64_t ts)
 	{
 		CleanupUnconfirmedLeaseSet (ts);
+		if (!m_Destination && ts > m_LastActivityTimestamp + ECIESX25519_SESSION_CREATE_TIMEOUT) return true; // m_LastActivityTimestamp is NS receive time 
 		return ts > m_LastActivityTimestamp + ECIESX25519_RECEIVE_EXPIRATION_TIMEOUT && // seconds
 			ts*1000 > m_LastSentTimestamp + ECIESX25519_SEND_EXPIRATION_TIMEOUT*1000; // milliseconds
 	}

libi2pd/ECIESX25519AEADRatchetSession.h

@@ -30,6 +30,7 @@ namespace garlic
 	const int ECIESX25519_SEND_INACTIVITY_TIMEOUT = 5000; // number of milliseconds we can send empty(pyaload only) packet after
 	const int ECIESX25519_SEND_EXPIRATION_TIMEOUT = 480; // in seconds
 	const int ECIESX25519_RECEIVE_EXPIRATION_TIMEOUT = 600; // in seconds
+	const int ECIESX25519_SESSION_CREATE_TIMEOUT = 3; // in seconds, NSR must be send after NS received
 	const int ECIESX25519_PREVIOUS_TAGSET_EXPIRATION_TIMEOUT = 180; // in seconds
 	const int ECIESX25519_ACK_REQUEST_INTERVAL = 33000; // in milliseconds
 	const int ECIESX25519_ACK_REQUEST_MAX_NUM_ATTEMPTS = 3;
@@ -169,7 +170,7 @@ namespace garlic
 			void SetRemoteStaticKey (const uint8_t * key) { memcpy (m_RemoteStaticKey, key, 32); }
 
 			void Terminate () { m_IsTerminated = true; }
-			void SetDestination (const i2p::data::IdentHash& dest) // TODO:
+			void SetDestination (const i2p::data::IdentHash& dest)
 			{
 				if (!m_Destination) m_Destination.reset (new i2p::data::IdentHash (dest));
 			}
@@ -224,7 +225,7 @@ namespace garlic
 			uint64_t m_SessionCreatedTimestamp = 0, m_LastActivityTimestamp = 0, // incoming (in seconds)
 				m_LastSentTimestamp = 0; // in milliseconds
 			std::shared_ptr<RatchetTagSet> m_SendTagset, m_NSRSendTagset;
-			std::unique_ptr<i2p::data::IdentHash> m_Destination;// TODO: might not need it
+			std::unique_ptr<i2p::data::IdentHash> m_Destination;// must be set for NS if outgoing and NSR if incoming
 			std::list<std::pair<uint16_t, int> > m_AckRequests; // incoming (tagsetid, index)
 			bool m_SendReverseKey = false, m_SendForwardKey = false, m_IsTerminated = false;
 			std::unique_ptr<DHRatchet> m_NextReceiveRatchet, m_NextSendRatchet;

libi2pd/Garlic.cpp

@@ -761,7 +761,7 @@ namespace garlic
 				session->SetRemoteStaticKey (staticKey);
 			}
 			if (destination->IsDestination ())
-				session->SetDestination (destination->GetIdentHash ()); // TODO: remove
+				session->SetDestination (destination->GetIdentHash ()); // NS or NSR
 			return session;
 		}
 		else