July 2017
Intermediate to advanced
434 pages
12h 59m
English
Content preview from FreeSWITCH 1.8
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storing data across successive requests
What is the best way to store pieces of information from one request to the next? Obviously, you could set and get channel variables, but that could be expensive with having to do multiple requests per set/get operation.
You could just store those bits of information in a session for easy access later. Each request will include a session_id POST or GET parameter. With this session_id parameter value you should be able to initialize a session using its value as the session identifier. This level of control is available in just about every web programming language. An example of doing this in PHP would look similar to the following:
if ( array_key_exists( 'session_id', $_REQUEST ) ) { session_id( $_REQUEST['session_id'] ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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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.