satyaparmar / smscgateway

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Configurable static value prefix for submit_sm_resp message_id #34

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago
Detailed information about the new feature request

1. What motivated the request:

In a clustered SMSC environment, where multiple SMSC are service requests, the 
message_id returned in a submit_sm_resp may be duplicated across multiple SMSC. 
This can cause confusion to 3rd party, who may be expecting completely unique 
message_id.

Perhaps a configurable value can be prefix/suffix to the message_id before it 
is returned. Keep in mind that the overall length of the message_id generated 
by the system will need to be reduced by the length of the configurable value 
so as to keep overall length within the spec. For our purposes a single 
character is fine and would allow (A-Z,0-9) 36 unique smsc in a cluster. A dual 
character would allow 36^2.

According to the SMPP 3.4 spec

submit_sm_resp has message_id which is a Variable length 65, C Octet String
This field contains the SMSC message ID of the submitted message. It may be 
used at a later stage to query the status of a message, cancel or replace the 
message.

5.2.23 message_id
The unique message identifier reference assigned by the SMSC to each submitted 
short
message. It is an opaque value and is set according to SMSC implementation. It 
is returned by the SMSC in the submit_sm_resp, submit_multi_resp, 
deliver_sm_resp  and  data_sm_resp PDUs and may be used by the ESME in 
subsequent SMPP operations relating to the short message, e.g. the ESME can use 
the  query_sm operation to query a previously submitted message using the SMSC 
message_id as the message handle.

Original issue reported on code.google.com by wasimb...@gmail.com on 9 Dec 2012 at 7:40