Can a custom HTTP monitor work with a JSON response?

Hi Ben,

 

 

You can send any TCP or HTTP request and check for any response with a TCP or HTTP monitor. But both need to be a single static string that's sent and a static string that's checked for in the response. You can use the steps in these two links to troubleshoot a failing monitor:

 

 

http://devcentral.f5.com/wiki/default.aspx/AdvDesignConfig/TroubleshootingLtmMonitors.html

 

http://support.f5.com/kb/en-us/solutions/public/12000/500/sol12531.html

 

 

tcpdump might be the simplest method to start troubleshooting this issue. You can use tcpdump to see the exact request bigd is sending and the response the pool member is sending.

 

 

If you want to look for a specific sequence of bytes in the response binary data, you can use ascii escape sequences (without the spaces between \ x and the two characters):

 

 

\ x 00 - null

 

\ x 01 - SOH

 

...

 

 

sol4186: Entering escape sequences in an ECV health monitor's send and receive strings

 

http://support.f5.com/kb/en-us/solutions/public/4000/100/sol4186.html

 

 

Aaron