January 2015
Intermediate to advanced
198 pages
4h 27m
English
Content preview from Python for Google App EngineBecome 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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Tracking connections and disconnections
An App Engine application is responsible for the creation of channels and the transmission of the token, but it doesn't know whether the JavaScript client is connected or not. For example, our Notes application sends a message upon the creation of a new note through the inbound e-mail service, but on the other side, the JavaScript client might or might not receive it. In some contexts, this is not an issue, but there are several use cases where an App Engine application needs to know when a client connects or disconnects from a channel.
To enable channel notifications, we first need to enable inbound Channel presence service. To do this, we have to change our app.yaml configuration file by adding the following ...
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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.