Re: [hybi] Websocket success rates and TLS extension.

[Justin Erenkrantz <[e-mail]>]

On Fri, Apr 16, 2010 at 1:56 AM, Mike Belshe <[e-mail]> wrote:
> So back to Greg's note:  the current websocket handshake requires a RT, and
> it will be difficult to use websocket for low-latency uses which it has
> that.  We're pretty sure that a low-latency protocol needs to remove more
> RTs.  But perhaps there is something genius yet to be discovered :-)

To just (re)state the obvious - if there is some extra bit coming
along with the TLS handshake (such as the extension Greg pointed at),
I think that'd reduce the RTs - or at least not add an additional one
on top of TLS.

To restate it even more verbosely...it'd be pretty straightforward for
a client that sticks a Web Socket handshake (or something) in the
tlsext for httpd/mod_ssl to immediately operate as if the upgrade is
successful.  Obviously, if you're talking to a server that doesn't
understand that tlsext, then you'd have to fallback to the GET
Upgrade: request mechanism.  But, it'd give us a nice opt-in for
latency reduction if both sides support the optimized sequence.

I do like this idea...  -- justin