I am trying to get "<http://hostname>" in below way.

```
string.Concat(Request.Url.Scheme, Uri.SchemeDelimiter, Request.Url.Host)

```

this should work in normal cases, but i am doing this on `publish:end` event, where request is null.

The context site is `publisher` and could not find Request property in `EventArgs` whats the best way to get Request properties in this case?