Re: Secdir last call review of draft-ietf-httpbis-early-hints-03

On 7 Jul 2017, at 7:23 pm, Willy Tarreau <> wrote:
> Maybe the stronger wording should be oriented differently, such as
> "Servers MUST not send 103 to HTTP/1.0 clients nor to any client
> known not to support 1xx informational responses" ? This way it
> leaves the possibility opened (ie rely on version and/or user-agent
> or anything else once an exception is known).

RFC7231 already says "Since HTTP/1.0 did not define any 1xx status codes, a server MUST NOT send a 1xx response to an HTTP/1.0 client."

Mark Nottingham

Received on Friday, 7 July 2017 09:33:50 UTC