Is there a way to hook a progress bar to an HTTP download?  I'm trying
to make an installer for Squellenium and when it downloads the zip the
long pause is disconcerting.  Here's how I'm downloading:

downloadSelenium
    ^ ZipArchive new readFrom: (self seleniumZipURI retrieveContents
contentStream binary; yourself)

So I send retrieveContents to a HttpURL.  I did a cursory hunt through
the image but couldn't turn up anything (I did find lots of progress bar
examples but nothing connected with HTTP).

David