proper freeng after udpsocket shutdown

slsReceiverSoftware/include/genericSocket.h

@@ -443,6 +443,8 @@ typedef struct
 
      void ShutDownSocket(){
    		 while(!shutdown(socketDescriptor, SHUT_RDWR));
+   		 close(socketDescriptor);
+   		 socketDescriptor = -1;
      };
 
 

slsReceiverSoftware/src/UDPStandardImplementation.cpp

@@ -1077,6 +1077,7 @@ int UDPStandardImplementation::createUDPSockets(){
 #ifdef VERBOSE
 			cprintf(BG_RED,"Could not create UDP socket on port %d error: %d\n", port[i], iret);
 #endif
+			shutDownUDPSockets();
 			return FAIL;
 		}
 	}