Get the port number of the default proxy server.
First available in version 3.0 build 2039.
result - The port number of the default proxy server.
When this method is called synchronously, a return object containing the output parameters is returned to the caller immediately.
This information is extracted from the user's default browser. Internet Explorer is the only supported browser at this time. Any browsers that use the IE registry location for storing proxy server information will also be able to use this value.
var return_obj = ssCore.HTTP.getDefaultProxyPort();