However when I test it from Pega Connect REST wizard on Pega 8.1, I am getting below error. Caught unhandled exception: java.lang.RuntimeException: org.apache.http.conn.HttpHostConnectException: Connect to 192.168.1.100:9999 [/192.168.1.100] failed: Connection timed out: connect
I know there are quite a few problems with proxy around 7.3 but does this error have something to do with proxy? Please let me know.
If you use postman from the same machine where your Pega is running (or a curl command to the url from the Pega host machine), does it work? Is your environment inside the company firewall with any proxy servers in between? The outcome of the curl command can tell you a lot.