HTTP probe issue with expect regex string

Question

Hello,
We have a simple cgi status page setup to poll a background service and return a "PASS" or "FAIL" as output.  I've setup an HTTP probe to look for the "PASS" to determine application health.  The issue appears to be that the expect regex is searching the HEADER but not the BODY of the web page.  I can successfully match on any string in the header, but never on anything in the body.
Here is what the web page returns if you telnet to it:
HTTP/1.1 200 OK
Date: Thu, 22 Sep 2011 22:45:07 GMT
Server: Apache/2.0.59  HP-UX_Apache-based_Web_Server (Unix) DAV/2
Content-Length: 4
Connection: close
Content-Type: text/plain; charset=iso-8859-1
PASS
Here is my probe:
probe http JOE-TEST-CS
  interval 45
  passdetect interval 30
  receive 30
  request method get url /cgi-bin/ERMS-PREP-statusRepo.cgi
  expect status 0 999
  open 20
  expect regex "PASS"
Here is the output of the show probe:
ACE1/euhr-test-ace2# sh probe JOE-TEST-CS detail
probe       : JOE-TEST-CS
type        : HTTP
state       : ACTIVE
description :
   port      : 80      address     : 0.0.0.0         addr type  : -
   interval  : 45      pass intvl  : 30              pass count : 3
   fail count: 3       recv timeout: 30
   http method      : GET
   http url         : /cgi-bin/ERMS-PREP-statusRepo.cgi
   conn termination : GRACEFUL
   expect offset    : 0         , open timeout     : 20
   expect regex     : PASS
   send data        : -
                       --------------------- probe results --------------------
   probe association   probed-address  probes     failed     passed     health
   ------------------- ---------------+----------+----------+----------+-------
   serverfarm  : JOE-TEST-PROBE-CS
     real      : EUHRTDM50.APP[0]
                       192.168.73.71   2          2          0          FAILED
   Socket state        : CLOSED
   No. Passed states   : 0         No. Failed states : 1
   No. Probes skipped  : 0         Last status code  : 200
   No. Out of Sockets  : 0         No. Internal error: 0
   Last disconnect err : User defined Reg-Exp was not found in Host Response
  Last probe time     : Thu Sep 22 15:00:36 2011
   Last fail time      : Thu Sep 22 15:00:36 2011
   Last active time    : Thu Sep 22 09:40:19 2011
If I replace the expect regex "PASS" with anything from the HEADER it succeeds!
Any thoughts?

Answer 1

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
http-equiv="Content-Type">
  Probe
PASS
Here are my headers that I received:
(Status-Line)    HTTP/1.1 200 OK
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
What version of code are you running on your ACE?  I can also look to see if there are any known issues.
Kris