topic Re: Keepalive in Application Networking

Keepalive

fabrice.demierre — Tue, 27 Apr 2004 19:21:52 GMT

I would like to know if it is possible to use a keepalive hash with a web page including java script? I tried to monitor the siebel 7.5 CRM but it doesn't work.

Kind regards

Fabrice

Re: Keepalive

Gilles Dufour — Wed, 28 Apr 2004 11:19:39 GMT

as long as the page is constant, you can use a keepalive hash - whatever the content.

The CSS does not know what the page contains.

It will only comput a hash and compare it with one saved in memory.

So, if at least 1 character changes in the page, it will return a different hash and the kal will fail.

I would suggest a HEAD request which concumes less bandwidth and should be enough to see if a url is valid.

Regards,

Gilles.

Re: Keepalive

fabrice.demierre — Thu, 29 Apr 2004 11:36:48 GMT

Thanks Gilles.

I'd like to monitor when Siebel is down, the page server is responding but the default page is changing.

When I try to use the get request the service goes down. Does the get request works with all the pages or is there any restriction?

Re: Keepalive

Gilles Dufour — Sun, 02 May 2004 10:35:49 GMT

The GET Keepalive expect the page to be always the same.

If it changes, it will report the side has down.

Use the HEAD request instead.

It is much better because it does not require the server to send us the page.

It is just a method to ask the server if the page is available.

The server just respond yes or no.

Regards,

Gilles.