[OpenSIPS-Users] adding and reading a SIP header to a 302 Redirect

Diptesh Patel diptesh.patel at ecosmob.com
Thu Jun 11 19:13:02 EST 2020


The next destination(s) should be decided based on Contact Header(s) of 3xx
Responses. You can configure one or more destinations based on priority and
fail-over enabled to multiple destinations. But in your case I found,
Contact Header is malformed i.e. *Contact: <sip:16317918378>. *

Thanks & Regards
*Diptesh Patel*
Software Developer
Ecosmob Technologies Ltd,

On Sat, May 30, 2020 at 5:47 PM Saint Michael <venefax at gmail.com> wrote:

> I need to add a new SIP header to the response below.
> if ($rm=="INVITE") {
>     /* add the redirect destinations as branches */
>     $branch = "sip:batman at gotham.com";
>     $branch = $avp(my_custom_uri);
>     /* sending a 3xx reply will automatically push all
>      * existing branches as Contact URIs */
>     send_reply("302","Moved Temporarily");
>     exit;
> }
> the final result should be:
> SIP/2.0 302 Moved Temporarily
> Via: SIP/2.0/UDP
> ;rport=52169;received=;branch=z9hG4bK-524287-1---129f4244aaba9f04
> Call-ID: 102650Mzg4NmFiNTQzOGY5NDJmNjM3OTYzNmE5MzNlZDIwZmI
> From: "XXXXX" <sip:XXX4433019 at XXX.124.224.87>;tag=81a25c36
> To: <sip:16317918378 at XXX
> .124.224.87>;tag=9e198dc4-7ce8-433d-ae23-05b9bc14d55a
> Identity:eyJhbGciOiJFUzI1NiIsInR5cCI6InBhc3Nwb3J0IiwicHB0Ijoic2hha2VuIiwieDV1IjoiaHR0cHM6Ly9jZXJ0LmV4YW1wbGUub3JnL3Bhc3Nwb3J0LmNlciJ9.eyJhdHRlc3QiOiJBIiwiZGVzdCI6eyJ0biI6WyI2MzE3OTE4Mzc4Il19LCJpYXQiOjE1OTA4MTEyMzgsIm9yaWciOnsidG4iOiI3Mjc0NDMzMDE5In0sIm9yaWdpZCI6IjEyM2U0NTY3LWU4OWItMTJkMy1hNDU2LTQyNjY1NTQ0MDAwMCJ9.AKViDWA3uonP6tt5cKBh0FUPY5zBuJnwZLQNTrp9LCWJ-vLY1Xx5i3_oXGh1ERL4tnD-KK5wsP3FdByDa_cjGw;info=<
> https://cert.example.org/passport.cer>;alg=ES256;ppt=shaken
> CSeq: 1 INVITE
> Server: Asterisk PBX 16.10.0
> Contact: <sip:16317918378>
> Reason: Q.850;cause=0
> Content-Length:  0
> also if I get that packet at my end, how do I extract the Identity header
> and apply it to the next INVITE?
> Is this even doable?
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