[OpenSIPS-Users] Add Contact parameters

Bogdan-Andrei Iancu bogdan at opensips.org
Tue Aug 21 12:08:46 EDT 2018

Hi Jeff,

There is no straight function for adding a Contact URI param, but you 
may abuse the fix_nated_contact(";my_param=my_val"); hopefully the 
replacement of the IP in URI will be a NOP (if there is not NAT).


Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
OpenSIPS Bootcamp 2018

On 08/14/2018 03:32 PM, Jeff Pyle wrote:
> Hello,
> Is it possible to add a parameter to the Contact header as a message 
> passes through the proxy?  Specifically I need to add at least one 
> parameter to the Contact user.  I realize this isn't as simple as it 
> seems on the surface since it would probably have to be managed on 
> every message passing through the proxy, not unlike how the 
> uac_replace_from() manages changing the From header.
> In my application completely rewriting the Contact header 
> topology_hiding() style is fine as well as long as I can manipulate 
> the new parameters at the time of the initial INVITE.
> Regards,
> Jeff
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