CSM HTTP Probes with Method GET

Hello.
How does the HTTP Probe with Method GET work on CSM and what is the difference with CSS?
CSS calculates the HASH of the web page it receives as a first answer and considers that as a REFERENCE HASH, to compare with subsequent answers. Is the behaviour of the CSM the same?
In the CSS it is also possible to insert the HASH in the configuration as a reference HASH. I did not find such a command on the CSM. Is that feature not present on CSM?
Thanks.

the CSM just looks for the response code.
No hash or anything similar to the CSS.
Regards,
Gilles.

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Sorry, I missed it. The content-length in your request is 4. I think this may be the issue. I created a basic HTML page that says PASS in the body and my server is returning a content-length of 224 when I fetch the page. Here is my HTML request:
GET /index.html
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Content-Length    224
Content-Type    text/html
Last-Modified    Tue, 27 Sep 2011 12:05:00 GMT
Accept-Ranges    bytes
Etag    "8cca60aed7dcc1:41f"
Server    Microsoft-IIS/6.0
Date    Tue, 27 Sep 2011 12:25:59 GMT
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CSM HTTP Probes with Method GET

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