- From: Mark Nottingham <mnot@mnot.net>
- Date: Mon, 21 Jan 2013 11:05:50 +1100
- To: William Chan (陈智昌) <willchan@chromium.org>
- Cc: "Adrien W. de Croy" <adrien@qbik.com>, Pablo <paa.listas@gmail.com>, HTTP Working Group <ietf-http-wg@w3.org>
It was discussed in terms of disabling it at the sender, not through negotiation, so I don't think the case you're talking about is going to be a problem. On 21/01/2013, at 10:55 AM, William Chan (陈智昌) <willchan@chromium.org> wrote: > Maybe it falls upon me to be the voice of concern here :) Depending on > what a "debug" option entails, I'm worried about it being used to > disable a performance feature. As an example of how options can be > dangerous, we've seen intermediaries that strip out Accept-Encoding > headers in order to force responses to be uncompressed (probably so > they can inspect the payloads more easily/cheaply), which is an issue > from a web performance perspective. > > Back to the use case, if you're in a position to use the debug option, > is it likely that you would not also be in a position to capture > enough to decode? I'd like to understand the use case so I can > properly weigh the benefit of such an option, in contrast to the cost > that I highlighted above. > > On Sun, Jan 20, 2013 at 3:48 PM, Mark Nottingham <mnot@mnot.net> wrote: >> >> On 21/01/2013, at 10:38 AM, "Adrien W. de Croy" <adrien@qbik.com> wrote: >> >>> >>> the thing that will make debugging harder won't be binary vs text, but the inter-dependence of messages. Especially when it comes to looking through debug logs for issues. >>> >>> On-the-wire, you already need to piece together a TCP stream to see what's going on, so having http messages effectively split over multiple frames (e.g. delta encoding, or compression) only becomes a problem when you don't capture enough to decode. >>> >>> I think it might be worth-while specifying a requirement for a "debug" option for senders of binary messages which turns off all other optimisations, such as caching unchanged headers etc (so they are sent every time). Just an idea. >> >> That's been brought up a few times, and the reaction has been pretty positive. >> >> Cheers, >> >> >> -- >> Mark Nottingham http://www.mnot.net/ >> >> >> > -- Mark Nottingham http://www.mnot.net/
Received on Monday, 21 January 2013 00:06:20 UTC