Notice of issue in SMPP Driver

Hi All,

There is a bug in the current SMPP driver that stops the driver from
accepting messages to be submitted to the SMSC.

Scenario:
SMPP SMSC configured as receiver and transmitter, transmitter and
receiver connected and bound successfully.
1) Receiver SMPP connection disconnects
2) SMPP SMSC status changed to SMSCCONN_RECONNECTING
3) Receiver SMPP connection reconnects to SMSC after reconnect delay
   and sends bind_receiver pdu
4) In handling of bind_receiver_resp the status is incorrectly set to
   SMSCCONN_ACTIVE_RECV as the previous status was SMSCCONN_RECONNECTING
   (This does not take into account that the transmitter is still
successfully
   connected)
5) Now the driver cannot receive any messages for submission to SMSC
   as status is not SMSCCONN_ACTIVE.

There also appears to be a potential race condition in the
handling of the bind_transmitter_resp and the bind_receiver_resp pdus,
the status variable is modified in both places and is not protected.

Regards,
Michael Mulcahy.

ANAM Wireless Internet Solutions
http://www.anam.com mailto:[email protected]
+353 1 284 7555
Castle Yard, Saint Patrick's Road, Dalkey, County Dublin, Ireland