New PDF release: Building the Realtime User Experience: Creating Immersive

By Ted Roden

ISBN-10: 0596806159

ISBN-13: 9780596806156

The net is more and more taking place in realtime. With web content reminiscent of fb and Twitter best the way in which, clients are coming to count on that each one websites may still serve content material because it happens -- on smartphones in addition to pcs. This publication indicates you the way to construct realtime person stories through including chat, streaming content material, and together with extra positive aspects in your website one piece at a time, with out making substantial alterations to the present infrastructure. You'll additionally find out how to serve realtime content material past the browser.

in the course of the e-book are many sensible JavaScript and Python examples so you might use in your web site now. And within the ultimate bankruptcy, you'll construct a location-aware online game that mixes the entire applied sciences mentioned.
* Use the most recent realtime syndication know-how, together with PubSubHubbub
* construct dynamic widgets in your homepage to teach realtime updates from a number of assets
* tips on how to use lengthy polling to "push" content material out of your server to browsers
* Create an software utilizing the twister internet server that is sensible of huge quantities of streaming content material
* comprehend the original necessities for establishing a uncomplicated chat carrier
* Use IM and SMS to allow clients to have interaction together with your web site open air of an internet browser
* enforce customized analytics to degree engagement in realtime

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Additional info for Building the Realtime User Experience: Creating Immersive and Interactive Websites

Example text

Php file. ://|i", $topic_url)) throw new Exception('Invalid URL: ' . lease_seconds", $lease); } return $this->_post(); This function accepts enough parameters to handle all of the options needed when subscribing to a hub. The two important parameters in this function are the $topic_url and the $callback_url. The topic URL specifies the actual Atom feed URL that we want to subscribe to. The callback URL is the URL that the hub will ping when it has new content. In the subscribe function, we check the existence and validity of the $topic_url and add it to the parameter list.

We’re not expected to interpret that second element, so it’s assigned to $garbage here, making it clear that it’s not needed. If none of the feeds need to be updated, there is no need to continue with this script. org/2005/Atom'); $entries = $kids->entry; echo("Feed has ". count($entries) . \n"); } Each time through the loop we check and import the entries contained within this feed. However, since SUP only tells us that something has been updated, we can’t just blindly save everything we find; we have to check the entries in the feed against our records.

Id> ... ... Adding our SUP-ID to this file is very easy. As you can see, we already have the $user_id, which in the example is being used to generate the id for the Atom feed. When generating our SUP feed, we generated the semi-unique ID from nothing more than that $user_id. php, so all we need to do is add that information to the feed, as I’ve done in the additions here:

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Building the Realtime User Experience: Creating Immersive and Interactive Websites by Ted Roden


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