HTTP2 spec HEADERS padding needs clarification

• From: Daurnimator <quae@daurnimator.com>
• Date: Mon, 16 Mar 2015 14:57:49 -0400
• To: ietf-http-wg@w3.org
• Message-ID: <CAEnbY+dPZEEGeHxNW60ZLgf1LzqA+VMFZHH0c+ggkNaQfwSjvw@mail.gmail.com>

>From 6.2 HEADERS:
> The HEADERS frame can include padding. Padding fields and flags are identical to
> those defined for DATA frames (Section 6.1).

>From 6.1 DATA:
> The total number of padding octets is determined by the value of the Pad Length field.
> If the length of the padding is the length of the frame payload or greater, the recipient
> MUST treat this as a connection error (Section 5.4.1) of type PROTOCOL_ERROR.

This could do with clarification. The HEADERS frame has additional
fields around priority.
i.e. stream dependency, weight.

I assume it should be a protocol error if padding length does not
leave enough room for weight?
Or could it be a valid frame for an empty header fragment and a weight
of 0 that overlaps padding?

Daurn.

Received on Monday, 16 March 2015 18:58:20 UTC