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From Laura Vance <>
Subject Re: [users@httpd] Alerting the web user; originally "how to automatically show pop-up window whenuser requests a site"
Date Thu, 22 Apr 2004 15:21:58 GMT

Something you might try since you are already using Java servlets and 
applets is to write a Java applet or application that maintains a 
connection with the servlet.  Then when new data comes up, you can then 
push it to the applet from the servlet and make it do whatever you 
want.  It would behave similarly to a chat program where the servlet has 
all the child processes connected out to invididual clients.

Just an idea.

Sternbergh, Cornell wrote:

>First, I agree with Adam, generally.  At home, I use a recent Mozilla,
>which won't execute new window commands, unless in response to user
>clicks.  I.E. it's a builtin popup blocker.
>Second. this may not be a specific "Apache" concern, and hence, a tad
>off topic, but I thought I'd mention it.
>I just wanted to mention that there can be legitimate use of pop-ups.
>The system I support at work is used by the trucking industry to request
>permits for overdimension loads.  It includes routing information (which
>roads the truck will travel).  Sometimes there are unscheduled closures,
>perhaps an accident, or bridge out, that closes a road segment.  When
>this occurs, we send a "flash message", a pop-up that alerts the users
>of this new situation.
>One, I feel this is a legitimate and useful application of popups.
>Two, with more and more popup blockers, and new browser versions
>disabling popups, this method of alerting users may not be viable much
>longer.  I'm wondering if anyone might suggest a method of "pushing"
>such an alert, without using "normal" popup mechanisms.  
>I'm thinking of a mechanism by which the server could "tell" the client
>of a new flash message and the client respond by, say, making a link
>visible, or highlighted, so as to alert the user to click it.
>We use HTML of course, and Java applets and servlets and Javascript.
>And Websphere application server and currently Domino as the HTTP
>server, though we're trying to move to Apache (IBM HTTP server)  We have
>MQSeries available, though haven't made use of it.
>Thanks for listening
>Cornell Sternbergh
Laura Vance
Systems Engineer
Winfree Academy Charter Schools, Data-Business Office
1711 W. Irving Blvd. Ste 310
Irving, Tx  75061

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