sofia sip - How to modify the handling of a SIP message in Freeswitch? -


i need special handling in freeswitch when receiving refer message avaya sip trunk. not sure whether sofia-sip allows users specify callback hook when refer received. haven't found one.

i want add custom freeswitch module handle refer. how can force sofia-sip cede control custom module while handling refer?

having freeswitch, recommend using lua module provides event callback refer handling. can allow control want refer message.

mod_lua documented module in freeswitch. pain coding in lua easy or hard based on preferences.