HI,
That error occure while reply script using winlnet ,winlnet reply engine takes more than 30 sec.You have to increase the value more than 30sec so it is not able to establish connection,it is trying to connect only one attempt,web_set_max_retries("5") just try it,it will try for 5times for connection.This is not correct solution ,correct solution u have to tune ur application or use socket level reply.
Thanks