In the url_response probe, profiles have a "Test URL" button. A successful test results in a "Fetched ok" message. What specifically does the probe key on to issue this "Fetched ok"? A 200 code, a 2xx code, a 2xx + some 3xx codes, something else? One of our developers asked what it was looking for to be successful, and I didn't have an answer, nor can I seem to find it documented anywhere.
Hello Darryl, can you please raise a support case so we can check with engineering that has access to the code for the probe.
The url_response probe actually uses curl (libcurl) to fetch a web page. You can see some of the activity when you set the loglevel to 5, e.g., HttpOpenResponse/HttpSendResponse.
As per the code, the Fetched Ok response and logged activity is based on the curl result (CURLE_*) and resultant HTTP response code/Status.