initial filtration of bad peers

Profiling.h

@@ -25,6 +25,8 @@ namespace data
 			void Save ();
 			void Load ();
 
+			bool IsBad () const { return !m_NumTunnelsAgreed && m_NumTunnelsDeclined >= 5; };
+			
 			void TunnelBuildResponse (uint8_t ret);
 			
 		private:	

TunnelPool.cpp

@@ -263,6 +263,11 @@ namespace tunnel
 		bool isExploratory = (m_LocalDestination == &i2p::context); // TODO: implement it better
 		auto hop = isExploratory ? i2p::data::netdb.GetRandomRouter (prevHop): 
 			i2p::data::netdb.GetHighBandwidthRandomRouter (prevHop);
+		if (!isExploratory && hop && hop->GetProfile ()->IsBad ())
+		{
+			LogPrint (eLogInfo, "Selected peer for tunnel has bad profile. Selecting another"); 
+			hop = i2p::data::netdb.GetHighBandwidthRandomRouter (prevHop);
+		}	
 			
 		if (!hop)
 			hop = i2p::data::netdb.GetRandomRouter ();