Indicate regular expression content mismatch in the alert message when checking hosts

If there is a content regexp mismatch, the alert says “Address not available” (and the email says “Connection failed” which isn’t true because the connection did not fail). Reproducible with v 5.27.1.

Config:

check host example.com with address example.com
   if failed 
        port 80 protocol http
        and request "/" with content != '<!doctype html>.*'
        with timeout 10 seconds
   then alert

This will result in these verbose log messages

Socket test failed for [93.184.216.34]:80 -- HTTP error: Regular expression matches
Socket test failed for [2606:2800:220:1:248:1893:25c8:1946]:80 -- Address not available
'example.com' failed protocol test [HTTP] at [example.com]:80/ [TCP/IP] -- Address not available
Sending Connection failed notification to user@example.com

Changing the comparison to = will result in no alert.

Comments (6)