> I was looking at the question about server push
>
http://www.nabble.com/Form-refresh-td12191652.html#a12232773>
> The solution of polling isnt an option, the event could happen in .5
> seconds or 5 minutes so polling every .5 seconds doesnt sound too
> good, although
> I suppose I could do some form of incremental wait, delay=k*time
> already spent.
>
> Are there any xforms extensions for this?
Well, XForms 1.1 specifies asynchronous submissions. In theory, you
can start a submission, then keep using the form, and then when the
submission completes it can triggers actions with the usual xforms-
submit-done event. With this approach, anytime the submission
completes it would have to reconnect to listen for the next event.
This could work, however we don't implement that yet. It is tricky to
do on the server, as it also needs a push communication mechanism
between server and client, and this means something like comet. So we
are back to using comet, except here it would be implemented natively
in the browser.
Note that comet also puts quite some requirements on the server if you
have lot of users around, since it will keep one connection open for
every user. Some people of course have been working on creating
scalable server solutions though.
> If not, (I know that its more of an ajax question), but does anyone
> know of a javascript library to
> handle the "comet" request?
I think that Google will be your friend here.
-Erik
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