GTM - HTTP check through proxy
I try to configure my GTM (v9.4.5) to monitor certain websites on the internet via my balanced proxy servers (ISA 2006).
So I created a TCP based monitor and configured the send string to something like
GET http://blablabla.com HTTP/1.1
First, without a receive string (as this didn't work anyway).
After the monitor is created I assigned it to a specific pool and it started making this GET request through the
proxy (traced the log and GTM interface with tcpdump).
The http request got processed by the proxy and the response delivered back to the GTM. Everything's good so
far but the GTM (cluster of 4 GTMs) marks this pool always to DOWN -> "(state: timeout)"
I also tried it with a HTTP monitor but it's always the same result.
Apart from that I tried to set "\r\n" behind the GET request -> no success
What is my fault?