[wp-hackers] WordPress and Websockets

Dion Hulse (dd32) wordpress at dd32.id.au
Wed Sep 28 01:26:54 UTC 2011

Push Events/SSE still have the same problem however, It requires a single
connection to remain open for the browser, a header/data chunk is sent along
with a HTTP 100 continue header from memory, so the browser continuously
receives the updated data. In order for that to happen, you'll have a PHP
script in a infinite loop (until the client disconnects).

Push Events and Websockets are nice standards, but not available for most
people right now due to that server support requirement, If you're deploying
a single dedicated site, you can ensure the server can handle it.. but for
everyone else out there not managing their servers? Ajax Long polling is the
best option which is going to perform whilst not bringing their server to
it's knees.

On 28 September 2011 02:18, Eric Mann <eric at eam.me> wrote:

> At the Portland WordPress User Group meetup last night, someone recommended
> an alternative to Websockets that might fit my use-case.  The HTML5 spec
> also includes a definition for Server-Sent Events.  It's not two-way
> communication, but still allows the server to asynchronously push data to
> the client without the use of AJAX long-polling.
> It works in all of the major "modern" browsers (Chrome, Firefox 6+, Safari,
> Opera) ... but will need to fall back to an alternative for older versions
> or for anything IE (and no, not even the IE10 developer preview supports
> SSE).
> Additionally, SSE will work with a stock Apache setup ... no need to
> install
> Nginx or host the system on a central location (both of which were
> solutions
> I was dreading for a plugin).  It communicates over standard HTTP, so no
> additional protocols need to be set up at all.
> So I'll still benefit from the new systems defined by HTML5 ... just not
> the
> ones I *thought* I'd end up using.  Thanks to everyone who took a stab at
> the question, though.  I'll eventually find a WP use case for websockets,
> and this will definitely come in handy!
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