using ends_with crashed my site -- what am I doing wrong?????

A couple of things I've noticed.

1. You don't need a matchclass if you are just comparing two strings.

2. Your HTTP::redirect has a space after the "http://" and the [HTTP::host]. This will result in the following url: "http:// foo.com /bar". Odds are this is what is causing your network is unreachable error.

Try this out:

when HTTP_REQUEST {
  if { [matchclass [string tolower [HTTP::uri]] starts_with $::secure_pages]} {
    pool public_http_pool
  } elseif { [string tolower [HTTP::uri]] ends_with ".aspx" } {
    HTTP::redirect "http://[HTTP::host][HTTP::uri]"
  }
}

-Joe