On Sun, 18 Dec 2005 00:23:18 -0500, Drake Smith <[EMAIL PROTECTED]> wrote:
At 04:03 PM 12/17/2005 +0200, you wrote:
* Drake Smith <[EMAIL PROTECTED]> [2005-12-17 08:08:40 -0500]:
> I use Twisted Web on an embedded Linux device to provide browser-based
> configuration & control. The browser displays a bar graph of a parameter
> that is quickly changing on the embedded device (peak audio level). In
> order to provide a reasonable feedback to the user, the browser connects
to
> the Twisted Web CGI server once a second via XMLHTTPRequest to obtain an
> updated bar graph level, then Twisted Web dutifully closes the
connection.
> Is there a way to achieve the same thing without opening & closing a
> connection each time?
Yes. The easiest way would be to use something like nevow.athena, which
takes care of the XHR connection for you, allowing you to concentrate on
the higher-level communication between browser and server.
--
mithrandi, i Ainil en-Balandor, a faer Ambar
Tristan, thank you for pointing out nevow.athena -- I did not know of it. I
did know
of livepage but I was hoping for something less involved. On the other hand,
the
ability to freely communicate back and forth between browser and server
without
the need for a plug-in is so important that I'm willing to take the plunge
into nevow.
Kindly let me know if there is any documentation on athena other than the
athena.py and .js modules that reside in the nevow 0.6.0 release, otherwise
I will
find my way through the source and Twisted-web archives.
There is a handful of examples in current [EMAIL PROTECTED], in
examples/athenademo/. Note that the API in 0.6 is not quite the same as the
API in current trunk. If you're going to use Athena, I recommend tracking
development, rather than sticking to the latest release (at least until the
next release, after which things should settle down quite a bit).
Also note that Athena opens and closes a lot of sockets. I am not sure why
this might matter, but you seemed to indicate it was a problem in your initial
post, so I wanted to point it out before you got too deep into anything.
Jean-Paul
_______________________________________________
Twisted-web mailing list
[email protected]
http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web
