- From: Roberto Peon <grmocg@gmail.com>
- Date: Wed, 2 Jul 2014 17:42:36 -0700
- To: Jason Greene <jason.greene@redhat.com>
- Cc: Nicholas Hurley <hurley@todesschaf.org>, "K.Morgan@iaea.org" <K.Morgan@iaea.org>, IETF HTTP WG <ietf-http-wg@w3.org>
- Message-ID: <CAP+FsNeMqS0akxaKvCP-_=eyZj-rQVT0-UASfDUORQC6fo=sUQ@mail.gmail.com>
I wonder how many servers don't. I don't know of any major servers with such a cap, but I'm surely in the dark. Do we know how many place a cap on the size of response headers? If just about everything supports it, why would it be an extension? -=R On Wed, Jul 2, 2014 at 5:38 PM, Jason Greene <jason.greene@redhat.com> wrote: > Sure every server that supports > 16KB of compressed header data will > implement the extension, or perhaps another extension :) Either way the end > result is the same. > > On Jul 2, 2014, at 7:33 PM, Roberto Peon <grmocg@gmail.com> wrote: > > > Is the extension guaranteed to be supported everywhere? > > If not, then HTTP2 doesn't offer HTTP1's semantics. > > -=R > > > > > > On Wed, Jul 2, 2014 at 5:32 PM, Jason Greene <jason.greene@redhat.com> > wrote: > > Compatibility isn’t really affected here. You simply use the extension > if you wish to accept > 16KB of compressed header data. HTTP/1.1 servers > were not required to support it any more than they are today. > > > > On Jul 2, 2014, at 7:21 PM, Roberto Peon <grmocg@gmail.com> wrote: > > > > > One cannot remove continuation without addressing backwards > compatibility with HTTP/1.1 deployments sending large headers. > > > > > > The status quo, or a variation which improves the state machine around > continuation (e.g. by moving the flags to the last frame of the headers > block) makes the most sense to me > > > -=R > > > > > > > > > On Wed, Jul 2, 2014 at 4:22 PM, Nicholas Hurley <hurley@todesschaf.org> > wrote: > > > This sounds like a non-starter, to me. As mentioned in the other > thread, I prefer either the status quo, or failing that a stateless > CONTINUATION. This seems worse to me than either of those options. With a > stateless CONTINUATION, in the rare occasions when I'll encounter a > compressed header block > 16k, I can roll back just one step in my HPACK > compression, and then continue on sending an uncompressed form of the > headers. With CONTINUATION as an extension, when the other side doesn't > advertise support, I would either have to either roll back the entire HPACK > state that I changed when trying to compress the headers and generate a > RST_STREAM (likely synthesizing an 413 or some other error in the process > for my own side), or I'd have to send a GOAWAY, and dial back. Neither of > those options is in any way more appealing than stateless CONTINUATION > (which I'm still not entirely sold on to begin with!) > > > > > > -- > > > Peace, > > > -Nick > > > > > > > > > On Wed, Jul 2, 2014 at 12:51 PM, <K.Morgan@iaea.org> wrote: > > > I'd like to propose yet another option to Mark's list of options for > dealing with the "CONTINUATION issue". > > > > > > Make it an extension. > > > > > > In NYC several people mentioned that if we add extensibility, we > should have an extension(s) right from the start that are used. > CONTINUATION IMO is a good option for an extension. > > > > > > Here is the CONTINUATION extension draft: > > > http://www.ietf.org/id/draft-johndoe-http2-large-header-blocks-00.txt > > > > > > Here is the pull request to remove CONTINUATION from the core h2 draft: > > > https://github.com/http2/http2-spec/pull/547 > > > > > > -keith > > > > > > This email message is intended only for the use of the named > recipient. Information contained in this email message and its attachments > may be privileged, confidential and protected from disclosure. If you are > not the intended recipient, please do not read, copy, use or disclose this > communication to others. Also please notify the sender by replying to this > message and then delete it from your system. > > > > > > > > > > > > > -- > > Jason T. Greene > > WildFly Lead / JBoss EAP Platform Architect > > JBoss, a division of Red Hat > > > > > > -- > Jason T. Greene > WildFly Lead / JBoss EAP Platform Architect > JBoss, a division of Red Hat > >
Received on Thursday, 3 July 2014 00:43:03 UTC