Get original url without non-standard port (C#)

Question

First question!

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Environment

MVC, C#, AppHarbor.

Problem

I am calling an openid provider,

Answer 1

If you use the UrlBuilder class in the framework you can easly get around this. On the builder class if you set the port to -1 then the port number will be removed:

new UriBuilder("http://sub.example.com:15232/callback"){ Port = -1}

returns : http://sub.example.com/callback

To keep the port number on a local machine just check Request.IsLocal and don't apply -1 to the port.

I would wrap this into a extension method to keep it clean.