[Kamailio-Users] uac_replace_from and lumps again

[Alex Hermann]

Hello,


i'm still fighting with the very annoying lump model that OpenSER uses. I need 
to send out INVITE's with different From headers in a failover situation. 
More specifically I need to send out each step -original request and 
failure_routes- with a different From header. If any request forks (parallel  
or serial due to DNS SRV or registered contacts), it needs to keep current 
(same) the replacement From on all branches.


I tried the following:

try 1:

REQUEST_ROUTE:
uac_replace_from(a)
t_relay();

FAILURE_ROUTE:
append_branch()
uac_replace_from(b)
t_relay()

the second uac_replace_from always produces garbage in the From


try 2:
REQUEST_ROUTE:
t_newtran()
uac_replace_from(a)
t_relay();

FAILURE_ROUTE:
append_branch()
uac_replace_from(b)
t_relay()

Now the second uac_replace_from is correct, but when the first t_relay() does 
dns based failover, the original from is used for the second branch instead 
of the replacement.
If the response code is locally generated 408, the second uac_replace_from 
produces garabage too.

Is someone aware of a working solution for this (very common) situation?

-- 
Greetings,

Alex Hermann