AN IRULE THAT PERFORMS HEADER ENRICHMENT AND SENDS TRAFFIC TO A Specific IP (MMSC)

The HTTP header enrichtment for MMS traffic is typically done on the WAP2 gateway, which is an network enforced HTTP proxy with a RADIUS accounting proxy, allowing to get all RADIUS packets from the GGSN as the PDP/IP conect for the client is established. Then the gateway enriches the HTTP headers with any RADIUS provided values, i.e. Calling-Station-Id woudl be your MSISDN for the MMSC. See Kannel WAP gateway for an open source WAP gateway that can do this.

Q. Do you want to add client ip in header or specific words? if client IP then follow below irule.

Please test it in your environment and let us know if any issue.

  when HTTP_REQUEST { 
if { [HTTP::host] equals "10.199.212.15" && [HTTP::uri] equals "/servlets/mms"} {   
    HTTP::header remove X-Forwarded-For
    HTTP::header insert X-Forwarded-For [IP::client_addr]
    pool mmsc_pool 
    } 
}