[OpenSIPS-Users] Route Header removal

[Louis Rochon]

Răzvan,

Thank you for the quick response. 2 Notes:

1. I saw another post about the visibility of header changes post manipulation. I now understand the subtleties of that mechanism. Thanks!

2. I am trying to remove the "Route" header, and not the "Record-Route" header. From my understanding, the Route header as the ability or override the R-URI. OpenSIPS does exactly that (as per spec.), which is why I want to remove it.

However, even " remove_hf("Route");" OpenSIPS still attempts to route based on the contents of the "Route" header.

Louis

-----Original Message-----
From: Users <users-bounces at lists.opensips.org> On Behalf Of Razvan Crainea
Sent: August 25, 2021 6:04 AM
To: users at lists.opensips.org
Subject: Re: [OpenSIPS-Users] Route Header removal


WARNING: External Email: Exercise Caution

Hi, Louis!

Almost all changes (perhaps the only exception is the R-URI and parts of the Contact header) performed on the SIP message will only be visible in the outgoing message, but *NOT* reflected in the script. This means that whatever change you perform to the message will not be visible by the functions used - this is the intended behavior.
If you don't want to route according the the Record-Route algorithm, you'll have to catch the request in the local_route and force sending it to whatever other destination you want.

Best regards,

Răzvan Crainea
OpenSIPS Core Developer
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On 8/24/21 10:34 PM, Louis Rochon wrote:
> We are trying to remove the Route header from an incoming Invite.
>
> Even with remove_hf, Opensips still routes towards the content of the
> Route header.
>
> Opensips.cfg:
>
> ------------------
>
> route {
>
> if ( is_method("INVITE") ) {
>
> .
>
> .
>
> .
>
> xlog("removing Route Header: $(hdr(Route)[0])\n");
>
> remove_hf("Route");
>
> xlog( "Route Header still present?: $(hdr(Route)[0])\n");
>
> };
>
> .
>
> .
>
> .
>
> And then we send the call to a b2b_init_request line.
>
> Both xlogs show the route header still there. And indeed, the opensips
> attempts to route according to the contents of the route header.
>
> Suggestions?
>
> **
>
> **
>
> *Louis*
>
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