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<p class="MsoNormal">I am using Opensips v.3.2 and I am attempting to replicate the 302 redirect outlined on the blog (<a href="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/</a>),
but am running into an odd issue.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">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.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">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.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If I specify the URI directly within OpenSIPs, then the contact header is then formatted correctly.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">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.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The script is setup as follows…<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> if ( $si == '10.10.14.71' && is_method("INVITE") ) {<o:p></o:p></p>
<p class="MsoNormal"> exec("/usr/local/bin/sbc-route", $tU, $var(out));<o:p></o:p></p>
<p class="MsoNormal"> xlog("Value returned from Re-direct Script is $var(out)");<o:p></o:p></p>
<p class="MsoNormal"> $branch = $var(out);<o:p></o:p></p>
<p class="MsoNormal"> xlog("Target is set as $branch");<o:p></o:p></p>
<p class="MsoNormal"> send_reply(302, "Server Redirect");<o:p></o:p></p>
<p class="MsoNormal"> exit;<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can anyone offer any ideas as to why this may be occurring?<o:p></o:p></p>
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