title: Getting SMPP error codes from server simulator
body: <p>I'm using Server simulator from official jsmpp examples and I want to get smpp error codes(like ESME_ROK) from the server sim.
  I use simpleSubmitExample and SimpleSubmitSimpleReceive (from official exmples) for sending messge and it works fine, but i need to get ESME_ROK from the server(in logs or as server output)
  How to achieve that? thx.</p>
  
  <p>link to jsmpp <a href="https://github.com/opentelecoms-org/jsmpp" rel="nofollow">https://github.com/opentelecoms-org/jsmpp</a></p>