<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span style="font-family:arial,sans-serif;font-size:13px">... how I listen for these events. Is it just a case of polling the<br>
</span><span style="font-family:arial,sans-serif;font-size:13px">socket for them at frequent enough intervals?</span></blockquote><div><br></div><div>You subscribe to the events you're interested in with 'events'</div>
<div><a href="http://wiki.freeswitch.org/wiki/Event_socket#event">http://wiki.freeswitch.org/wiki/Event_socket#event</a></div><div><br></div><div>There's no polling involved. FS will send all subscribed events through the socket, you just need to receive them. Use select()/poll()/equivalent to detect when data has arrived.</div>
<div><br></div><div>Since you already have xml_cdr working that would be the best place to collect it, if you can add an extra DB insert in the handler.</div><div><br></div><div>-Steve</div><div class="gmail_extra"><br><br>
<div class="gmail_quote">On 29 November 2012 11:58, Richard Gration <span dir="ltr"><<a href="mailto:richgration@gmail.com" target="_blank">richgration@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
Thanks for your reply. I was wondering ...<br>
<div class="im"><br>
> If you listen to events then you should be able to reliably receive a hangup<br>
> event containing the variables if you are still connected at that time.<br>
<br>
</div>... how I listen for these events. Is it just a case of polling the<br>
socket for them at frequent enough intervals?<br>
<div class="im"><br>
> If you want a 100% reliable method use CDRs.<br>
><br>
> mod_xml_cdr can submit call CDRs to a webserver just after call hangup. The<br>
> XML is verbose and will contain a full call history and all channel<br>
> variables. Because it's submitted ASAP you get the results in real time and<br>
> reliable. If the module can't submit the CDRs it writes them to an error<br>
> folder on disk where you can resubmit them.<br>
><br>
> Real time seems useful for your use-case, as your script would just need to<br>
> check your DB whether the CDR had been submitted yet. The channel UUID can<br>
> either be captured from events or specified in advance in the originate<br>
> (originate_uuid). There's a uuid api call to generate them for you. I'd<br>
> suggest looking at this method.<br>
<br>
</div>This is all great info, thanks :-) I'm capturing the uuid from the<br>
response from the originate command, that's no problem.<br>
<br>
The box I'm doing this on is being a B2BUA for us at the moment. The<br>
CDRs are already being HTTP POSTed to a URL, I can't change that as<br>
our billing depends on it. I can see the channel variable coming<br>
though in the POST content, so maybe I can frob the CDR script to give<br>
me what I want.<br>
<br>
Thanks again for the info.<br>
<div class="HOEnZb"><div class="h5"><br>
Cheers,<br>
Rich<br>
<br>
--<br>
Once our basic material needs are met - in my utopia, anyway - life<br>
becomes a perpetual celebration in which everyone has a talent to<br>
contribute. But we cannot levitate ourselves into that blessed<br>
condition by wishing it. We need to brace ourselves for a struggle<br>
against terrifying obstacles, both of our own making and imposed by<br>
the natural world. And the first step is to recover from the delusion<br>
that is positive thinking.<br>
-- Barbara Ehrenreich<br>
<br>
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