Re: On the harm of adding new methods

From: Scott Lawrence (
Date: Wed, Jun 10 1998

Date: Wed, 10 Jun 1998 12:15:11 -0400 (EDT)
From: Scott Lawrence <>
To: Larry Masinter <>
cc: Josh Cohen <>,,
Message-ID: <>
Subject: Re: On the harm of adding new methods

On Wed, 10 Jun 1998, Larry Masinter wrote:

> Any new METHOD in HTTP is a serious modification to the protocol, because
> the forwarding function must be aware of it. A new content-type, however,
> can be as easily recognized in the filter layer as a new method, but
> requires NO changes to the forwarding function. Many filters already filter
> on content-type anyway.

  But will the content-type be ok in both directions?  What is the
content-type of an ipp response?  If it is not also application/ipp,
then you could easily create a situation in which the request can be
sent and pass through the filter, but the response cannot...