<p>Have you looked at $fs variable ? it does exactly what you need : <br>
<a href="http://www.opensips.org/Documentation/Script-CoreVar-2-1#toc44">http://www.opensips.org/Documentation/Script-CoreVar-2-1#toc44</a></p>
<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br>Reply to this email directly or <a href="https://github.com/OpenSIPS/opensips/pull/586#issuecomment-127578349">view it on GitHub</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/AFOciUcJsz0qCM5u8mF547tLjeV2sn5Fks5okKHngaJpZM4FkUsR.gif" width="1" /></p>
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