don't limit num attempts in routing path. Increased routing path expiration to 2 minutes

libi2pd/Garlic.cpp

@@ -45,22 +45,17 @@ namespace garlic
 	{
 		if (!m_SharedRoutingPath) return nullptr;
 		uint32_t ts = i2p::util::GetSecondsSinceEpoch ();
-		if (m_SharedRoutingPath->numTimesUsed >= ROUTING_PATH_MAX_NUM_TIMES_USED ||
-			!m_SharedRoutingPath->outboundTunnel->IsEstablished () ||
+		if (!m_SharedRoutingPath->outboundTunnel->IsEstablished () ||
 			ts*1000LL > m_SharedRoutingPath->remoteLease->endDate ||
 			ts > m_SharedRoutingPath->updateTime + ROUTING_PATH_EXPIRATION_TIMEOUT)
 				m_SharedRoutingPath = nullptr;
-		if (m_SharedRoutingPath) m_SharedRoutingPath->numTimesUsed++;
 		return m_SharedRoutingPath;
 	}
 
 	void GarlicRoutingSession::SetSharedRoutingPath (std::shared_ptr<GarlicRoutingPath> path)
 	{
 		if (path && path->outboundTunnel && path->remoteLease)
-		{
 			path->updateTime = i2p::util::GetSecondsSinceEpoch ();
-			path->numTimesUsed = 0;
-		}
 		else
 			path = nullptr;
 		m_SharedRoutingPath = path;

libi2pd/Garlic.h

@@ -51,8 +51,7 @@ namespace garlic
 	const int OUTGOING_TAGS_EXPIRATION_TIMEOUT = 720; // 12 minutes
 	const int OUTGOING_TAGS_CONFIRMATION_TIMEOUT = 10; // 10 seconds
 	const int LEASESET_CONFIRMATION_TIMEOUT = 4000; // in milliseconds
-	const int ROUTING_PATH_EXPIRATION_TIMEOUT = 30; // 30 seconds
-	const int ROUTING_PATH_MAX_NUM_TIMES_USED = 100; // how many times might be used
+	const int ROUTING_PATH_EXPIRATION_TIMEOUT = 120; // in seconds
 
 	struct SessionTag: public i2p::data::Tag<32>
 	{
@@ -89,7 +88,6 @@ namespace garlic
 		std::shared_ptr<const i2p::data::Lease> remoteLease;
 		int rtt; // RTT
 		uint32_t updateTime; // seconds since epoch
-		int numTimesUsed;
 	};
 
 	class GarlicDestination;

libi2pd/Streaming.cpp

@@ -520,7 +520,7 @@ namespace stream
 		if (firstRttSample && m_RoutingSession)
 			m_RoutingSession->SetSharedRoutingPath (
 				std::make_shared<i2p::garlic::GarlicRoutingPath> (
-					i2p::garlic::GarlicRoutingPath{m_CurrentOutboundTunnel, m_CurrentRemoteLease, (int)m_RTT, 0, 0}));
+					i2p::garlic::GarlicRoutingPath{m_CurrentOutboundTunnel, m_CurrentRemoteLease, (int)m_RTT, 0}));
 		if (m_SentPackets.empty () && m_SendBuffer.IsEmpty ())
 		{
 			m_ResendTimer.cancel ();

libi2pd_client/I2CP.cpp

@@ -202,7 +202,7 @@ namespace client
 			else
 				remoteSession->SetSharedRoutingPath (nullptr);
 		}
-		else
+		if (!outboundTunnel || !remoteLease)
 		{
 			auto leases = remote->GetNonExpiredLeases (false); // without threshold
 			if (leases.empty ())
@@ -216,7 +216,7 @@ namespace client
 			}
 			if (remoteLease && outboundTunnel)
 				remoteSession->SetSharedRoutingPath (std::make_shared<i2p::garlic::GarlicRoutingPath> (
-					i2p::garlic::GarlicRoutingPath{outboundTunnel, remoteLease, 10000, 0, 0})); // 10 secs RTT
+					i2p::garlic::GarlicRoutingPath{outboundTunnel, remoteLease, 10000, 0})); // 10 secs RTT
 			else
 				remoteSession->SetSharedRoutingPath (nullptr);
 		}