fixed crash if no routers available

Tunnel.cpp

@@ -555,14 +555,13 @@ namespace tunnel
 		{
 			// trying to create one more oubound tunnel
 			auto inboundTunnel = GetNextInboundTunnel ();
-			if (!inboundTunnel) return;
+			auto router = i2p::data::netdb.GetRandomRouter ();
+			if (!inboundTunnel || !router) return;
 			LogPrint ("Creating one hop outbound tunnel...");
 			CreateTunnel<OutboundTunnel> (
-			  	new TunnelConfig (std::vector<std::shared_ptr<const i2p::data::RouterInfo> > 
-				    { 
-						i2p::data::netdb.GetRandomRouter ()
-					},		
-		     		inboundTunnel->GetTunnelConfig ()));
+			  	new TunnelConfig (std::vector<std::shared_ptr<const i2p::data::RouterInfo> > { router },		
+		     		inboundTunnel->GetTunnelConfig ())
+			                              );
 		}
 	}
 	
@@ -604,12 +603,11 @@ namespace tunnel
 		if (m_OutboundTunnels.empty () || m_InboundTunnels.size () < 5) 
 		{
 			// trying to create one more inbound tunnel		
+			auto router = i2p::data::netdb.GetRandomRouter ();
 			LogPrint ("Creating one hop inbound tunnel...");
 			CreateTunnel<InboundTunnel> (
-				new TunnelConfig (std::vector<std::shared_ptr<const i2p::data::RouterInfo> >
-				    {              
-						i2p::data::netdb.GetRandomRouter ()
-					}));
+				new TunnelConfig (std::vector<std::shared_ptr<const i2p::data::RouterInfo> > { router })
+			                             );
 		}
 	}	
 

TunnelPool.cpp

@@ -297,6 +297,11 @@ namespace tunnel
 		for (int i = 0; i < numHops; i++)
 		{
 			auto hop = SelectNextHop (prevHop);
+			if (!hop)
+			{
+				LogPrint (eLogError, "Can't select next hop for inbound tunnel");
+				return;
+			}	
 			prevHop = hop;
 			hops.push_back (hop);
 		}		
@@ -329,6 +334,11 @@ namespace tunnel
 			for (int i = 0; i < m_NumOutboundHops; i++)
 			{
 				auto hop = SelectNextHop (prevHop);
+				if (!hop)
+				{
+					LogPrint (eLogError, "Can't select next hop for outbound tunnel");
+					return;
+				}	
 				prevHop = hop;
 				hops.push_back (hop);
 			}	
@@ -338,7 +348,7 @@ namespace tunnel
 			tunnel->SetTunnelPool (shared_from_this ());
 		}	
 		else
-			LogPrint ("Can't create outbound tunnel. No inbound tunnels found");
+			LogPrint (eLogError, "Can't create outbound tunnel. No inbound tunnels found");
 	}	
 		
 	void TunnelPool::RecreateOutboundTunnel (std::shared_ptr<OutboundTunnel> tunnel)