[OpenSIPS-Users] Odd URI formatting issue when using Exec to return a variable

[Bogdan-Andrei Iancu]

Hi Ben,

Could you post the xlog output and the resulting 302 ? Also be sure you 
are using the latest 3.2 version - please post the `opensips -V` here.

Regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
   https://www.opensips-solutions.com
   https://www.siphub.com

On 11/14/23 4:00 PM, Ben Bliss wrote:
>
> I am using Opensips v.3.2 and I am attempting to replicate the 302 
> redirect outlined on the blog 
> (https://blog.opensips.org/2018/07/05/handling-sip-redirect-requests-in-realtime/ 
> <https://blog.opensips.org/2018/07/05/handling-sip-redirect-requests-in-realtime/>), 
> but am running into an odd issue.
>
> I am using exec to execute an external program, which returns a URI as 
> a variable, which is then used to populate the $branch field, which is 
> then returned as the contact URI in the 302 response.
>
> For reasons I cannot explain, even though the URI is correctly 
> formatted in the xlogs which I print off during the call request, when 
> the 302 message is received, the Contact URI is missing the end 
> ‘>‘character. This means the server the 302 is being sent to doesn’t 
> ACK the message, as the contact URI is invalid.
>
> If I specify the URI directly within OpenSIPs, then the contact header 
> is then formatted correctly.
>
> Initially I thought the issue was related to the script returning the 
> variable (bash script), so I swapped to a Golang program, essentially 
> returning the same URI, but the same behaviour occurs with this as well.
>
> The script is setup as follows…
>
>         if ( $si == '10.10.14.71' && is_method("INVITE") ) {
>
> exec("/usr/local/bin/sbc-route", $tU, $var(out));
>
>                         xlog("Value returned from Re-direct Script is 
> $var(out)");
>
>                         $branch = $var(out);
>
>                         xlog("Target is set as $branch");
>
>                         send_reply(302, "Server Redirect");
>
>                         exit;
>
>         }
>
> Can anyone offer any ideas as to why this may be occurring?
>
>
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