July 2017
Intermediate to advanced
434 pages
12h 59m
English
Content preview from FreeSWITCH 1.8
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Always checking session:ready()
In this example script there is an almost compulsive checking of the state of the Session objects - are they ready()? This is to check if the call has been answered, if it has not been hungup; in a word: if someone is still there.
Checking session:ready() is important, not only for knowing at which point the caller left your application, but also to avoid getting stuck in loops, waiting for the return of a database query, or (worse) for the caller to give input.
You can end up with your script stuck, and FreeSWITCH will not be able to free the associated resources (script and call data structures, and so on). Beware!
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.