New Authorization Service and Using Wildcards

Hi,

I'm trying to port over our application to use the new authorization service and I made a copy of our app as per the instructions here:

https://v3.developer.constantcontact.com/api_guide/auth_update_apps.html

Our redirect URL goes to localhost, however, the port number may be different depending on the circumstance so I have:

http://localhost:*/ccauth as the redirect.

The * wildcard allows me to specify a different port number.

Now, for the new copied app it has this error:

This redirect URI uses an unsupported wildcard character. The redirect URI must be an absolute URI.

Does this mean that there is a supported wildcard character or does this mean that wildcards are no longer accepted at all?

If there is a supported wildcard char, what can I use to indicate different port #?