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Hello,</div>
<div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="auto">
<br>
</div>
<div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="auto">
you could probably combine some string transformation to get the desired result.</div>
<div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="auto">
<br>
</div>
<div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="auto">
If your requirements are related to accounting, the acc module might bei easier to use.</div>
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<br>
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<div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="auto">
Cheers,</div>
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<br>
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<div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="auto">
Henning</div>
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-- <br>
Henning Westerholt - <a href="https://skalatan.de/blog/" target="_blank">https://skalatan.de/blog/</a><br>
Kamailio services - <a href="https://skalatan.de/services" target="_blank">https://skalatan.de/services</a></div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> sr-users <sr-users-bounces@lists.kamailio.org> on behalf of Chaigneau, Nicolas <nicolas.chaigneau@capgemini.com><br>
<b>Sent:</b> Friday, September 25, 2020 6:34:30 PM<br>
<b>To:</b> Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org><br>
<b>Subject:</b> Re: [SR-Users] Computing a time difference when handling a stateless SIP request</font>
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> > <br>
> > --snip <br>
> > I would like to compute a time difference (with microseconds<br>
> > precision) when handling a stateless SIP request.<br>
> > --snip<br>
><br>
> Welcome!<br>
><br>
> Take a look at:<br>
> <a href="https://www.kamailio.org/wiki/cookbooks/5.4.x/pseudovariables#timeval">
https://www.kamailio.org/wiki/cookbooks/5.4.x/pseudovariables#timeval</a><br>
><br>
> You can get down to the microsecond level.<br>
<br>
<br>
Thanks!<br>
<br>
Looking at src\modules\pv\pv_time.c, it seems TV functions just use "gettimeofday".<br>
I was looking for a time difference based on a monotonically increasing clock (to avoid possible NTP drifting imprecision).<br>
<br>
I've looked at the "benchmark" module which seems to do something like that, but I don't think I can use it for what I need...<br>
<br>
<br>
<br>
Anyhow, I have another question. Using the TV I've come up with the following.<br>
This works, except that I don't know how to convert an int to a string padded with zeroes (e.g. 51 => "051").<br>
Is there a transformation that allows to do that?<br>
<br>
<br>
$var(start_time) = $TV(Sn); # allows to cache $TV(s) and $TV(u)<br>
<br>
(...)<br>
<br>
$var(end_time) = $TV(Sn);<br>
$var(end_s) = $TV(sn);<br>
$var(end_us) = $TV(un);<br>
$var(diff_us) = $var(end_us) - $TV(u) + (1000000 * ($var(end_s) - $TV(s)));<br>
<br>
# convert this to ms (integer part) and us (fractional part)<br>
$var(diff_ms) = $var(diff_us) / 1000;<br>
$var(diff_us_f) = $var(diff_us) - (1000 * $var(diff_ms));<br>
<br>
$var(diff_ms_us) = $var(diff_ms) + "." + $var(diff_us_f); # need to format on 3 digits... can we do the equivalent of sprintf("%03u") somehow ?<br>
<br>
<br>
<br>
<br>
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