How to make an EAV to check a string deeper than 5,120 bytes into an HTTP response?

Forums Technical Forums
,
1

I need to make a monitor that searches for a word in a http response, but that word is in the end of the string.

Regular monitors goes only to 5,120 bytes, so i need to create an EAV (External Application Verification) for this task.

How do i do this?

Thanks.

2

Hi Thales,

As far as I’m aware, the 5120 byte limit is not user-configurable. You could use an external monitor instead:

http://devcentral.f5.com/wiki/AdvDesignConfig.codeshare.ashx →

http://devcentral.f5.com/wiki/AdvDesignConfig.HTTPMonitor\_cURL\_BasicGET.ashx

Aaron

3

Thales,

Another thing to consider is writing a separate script that lives on your origin web servers that is a wrapper for a number of tests performed on the application. I’ve done this in the past so that the BIG-IP health monitor can be as simple as possible while leaving the logic in a script on the webservers. You can also build some caching into the test script as well to prevent overloading your backend with excessive requests from health monitors.

-George

4

Thanks for the help.

For now i´ll try the EAV monitor. I´m not so familiar with server scripts.

In this example (DevCentral - An F5 Technical Community), if i put my request at the URI and the string i expect at the RECV, will it work without the 5,120 bytes limit?

Thanks.