close SSU session if MAC verification fails

SSU.cpp

@@ -418,7 +418,10 @@ namespace ssu
 					LogPrint ("Unexpected payload type ", (int)(header->flag >> 4));	
 			}
 			else
+			{	
 				LogPrint ("MAC verification failed");	
+				Failed ();
+			}	
 		}
 		else
 			LogPrint ("SSU is not supported");
@@ -511,6 +514,14 @@ namespace ssu
 			m_DelayedMessages.clear ();
 		}	
 	}	
+
+	void SSUSession::Failed ()
+	{
+		m_State = eSessionStateFailed;
+		Close ();
+		if (m_Server)
+			m_Server->DeleteSession (this); // delete this 
+	}	
 	
 	const uint8_t * SSUSession::GetIntroKey () const
 	{

SSU.h

@@ -58,7 +58,8 @@ namespace ssu
 		eSessionRelayRequestSent,
 		eSessionRelayRequestReceived,	
 		eSessionRelayResponseReceived,	
-		eSessionStateEstablished
+		eSessionStateEstablished,
+		eSessionStateFailed
 	};		
 
 	class SSUServer;
@@ -91,6 +92,7 @@ namespace ssu
 			void SendSessionConfirmed (const uint8_t * y, const uint8_t * ourAddress, uint32_t relayTag);
 			void ProcessRelayResponse (uint8_t * buf, size_t len);
 			void Established ();
+			void Failed ();
 			void ProcessData (uint8_t * buf, size_t len);	
 			void SendMsgAck (uint32_t msgID);
 			void SendSesionDestroyed ();