mozilla/snippets-tests — pull request #5 by Osmose (2012-04-13 18:20:18+00:00)
Title: Add 5 second timeout and use HEAD for url checks.

To protect against intermittent slowness, we should use a 5 second
timeout on external URL requests.

I've also refactored the URL validity checks to use a HEAD request
instead of a GET, as a HEAD request will return the same result without
a response body, saving on time and space.