No option to set a timeout when creating a socket to connect to the SMPP gateway

## Purpose

Currently there is no option to set a timeout when creating a socket to connect to the SMPP gateway. Therefore the process will hang if the connection is not successful.

An improvement[1] was suggested to the https://github.com/uudashr/jsmpp library. Is it possible to have a similar fix here as well

[1] - https://github.com/uudashr/jsmpp/pull/7

Thanks