RE: Information Push

Hi,

thank you for that pointer. I will have a look and a test. I looks
interesting :-) I guess the connection is needed otherwise it can not update the
browser. If the client however is not a browser but just a software who
understands HTTP and is able to reconnect on demand, then it could be solved with
setting up a timeout in Tomcat. The timeout could be set to i.e. 1 seconds. then
the client would need to connect again. ...

Thank you,
Ralf

> Ralf,
>
> Have a look at
> http://www.javaworld.com/jw-03-2000/jw-03-pushlet.html
> http://www.sourceforge.net/projects/pushlets
>
> This is a technology using servlets.
> I had a play with it and it works just fine.
> The only disadvantage is that it keeps connections open on your server.
> Which is ok for a few, but if it is to be used by the masses then it might
> not be.
>
> Regards,
>
> Cor.
>
> -----Original Message-----
> From: Ralf Bierig [mailto:ambiesense@(protected)]
> Sent: Monday, October 27, 2003 10:47
> To: tomcat-user@(protected)
> Subject: Information Push
>
>
> Hi,
>
> Tomcat works over HTTP and therefore implement the HTTP request / response
> pattern which is like an information pull over the internet. For this I
> would
> for example have a JSP which is requested by a browser, these JSP is
> callign
> some java beans and the information output is put as a HTML and sent back
> to
> the browser. Fine! But...
>
> how can I implement information push? What do I have to do
> (methodological,
> technical) to let my Java software push a website to a browser? I know
> this
> is a very general description but I hope you understand what I mean.
>
> To be more specise, but I do not want to restrict your answer, I could
> also
> think of these variant. I JSP site is requested by a browser. Every few
> seconds, the Java bean is producing a new updated version of this output
> website.
> How would I do this?
>
> However if somebody know a more generic appraoch, please let me know? Is
> there a kind of architecture which supports this kind of programming? I
> think
> the main problem is HTTP since HTTP was not designed for this way of
> information provision.
>
> Any help, examples, links etc. would be highly appreciated,
> Ralf
>
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RE: Information Push

Ralf Bierig

2003-10-27