Re: HTTP 1.1 issue 23: 13.5.2 Non-modifiable Headers
Jim Gettys (jg@pa.dec.com)
Wed, 11 Nov 1998 10:07:46 -0800
> In section 13.5.2 "Non-modifiable Headers", the statement
>
> "A non-transparent proxy MAY modify or add these fields to a
> message that does not include no-transform, but if it does so, if
> not already present, it MUST add a Warning 214 (Transformation
> applied) if one does not already appear in the message (see
> section 14.46)."
>
> appears to be in error. It allows non-transparent proxies to make
> certain changes to messages that do not contain Cache-Control:
> no-transform. The discussion of the no-transform directive in section
> 14.9.5 doesn't jive, and makes it look like this paragraph should read
> "... that contains no-transform ...", just as the immediately prior
> paragraph does.
>
No, I think it is correct: there are two cases: a message that
contains no-transform and one that does contain no-transform.
You are allowed to change the headers in the default case of
a message not marked "no-transform", so long as you mark
the message with the 214 (Transformation applied) warning.
- Jim