API socket error

I am trying to run the sample python script to use the API cloud generation. I am getting a socket error:

socket.error: [Errno 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

when attempting to execute the line that calls generateCloud.

The server URL I am using is: https://tagul.com:4433/api

Is your server up? Am I using the right URL? Do I need to increase a timeout on my side somewhere?

Please help.

Thanks.

Somewhat resolved. The problem was that I was calling the API from behind a proxy firewall. It works if I use a client outside the firewall.