[hybi] HELLO frames (was Re: It's time to ship)

[Maciej Stachowiak <[e-mail]>]

On Jan 9, 2011, at 3:02 PM, Willy Tarreau wrote:

> On Sun, Jan 09, 2011 at 02:49:10PM -0800, Adam Barth wrote:
> 
>>>  - Greg proposed to replace the MORE bit with a FIN bit so that the first
>>>    hello frame from the server starts with a high bit set, thus ensuring
>>>    that we can break the connection on non-HTTP compliant intermediaries
>>>    which would expect a second response after the 101.
>> 
>> The protocol is good enough without this change.  The masking has us
>> covered here.
> 
> No, I'm talking about the ability to ensure that a non-compliant intermediary
> will fail early instead of remaining stuck waiting for the server to talk.
> That once one of Hixie's major concerns and one of the reasons for the Hello
> frames suggestion.

Is there any evidence that either client-->server or sever-->client HELLO frames would reduce the rate of apparent successful connections that later fail in real-world deployment? If so, we can consider adding them on their own merits.

Regards,
Maciej