This article explains how to perform a connectivity test from the ProxySG CLI by sending an HTTP GET request to an Origin Content Server (OCS). A successful HTTP GET request should result in HTTP code 200 or HTTP code 302 (redirection) indicating of successful connections from ProxySG to OCS. Other codes, for example: 401 unauthorized, or 502 bad gateway, may indicate deployment or configuration issues.
Note: Some websites operate only HTTPS, so you should expect to receive an HTTP response code 302 for redirection when testing with such a site.
To perform the test, SSH into the ProxySG CLI and issue the following command: test http get www.google.com
Note the HTTP GET results on the last line in the output.
From the above output, note the HTTP response code 302, redirecting the URL to HTTPS://www.facebook.com
Optionally, you can also view this and other tests with a packet capture. You can refer to the following article: How do I create a packet capture filter to capture HTTP GET requests? for help setting up a packet capture on ProxySG. Please refer to article: Using packet captures - Quick start guide on how to run packet capture from CLI.