module HTTPClient::Util

def uri_part_of(uri, part)

* target URI's path starts with base URI's path.
* the same port number
* the same host String (no host resolution or IP-addr conversion)
* the same scheme
Returns true if the given 2 URIs have a part_of relationship. 
def uri_part_of(uri, part)
  ((uri.scheme == part.scheme) and
   (uri.host == part.host) and
   (uri.port == part.port) and
   uri.path.upcase.index(part.path.upcase) == 0)
end