- From: Roberto Peon <grmocg@gmail.com>
- Date: Sun, 22 Jul 2012 09:20:41 -0700
- To: Marcelo Fernandez <fernandezm@gmail.com>
- Cc: Benjamin Carlyle <benjamincarlyle@soundadvice.id.au>, HTTP Working Group <ietf-http-wg@w3.org>
- Message-ID: <CAP+FsNf28s5=_9RpwDVV3n1KMwu6rsC0H5o5tO-Ti3rvJh5Xog@mail.gmail.com>
You're right Marcelo. :) -=R On Jul 22, 2012 5:54 AM, "Marcelo Fernandez" <fernandezm@gmail.com> wrote: > Hello Benjamin, > > 2012/7/22 Benjamin Carlyle <benjamincarlyle@soundadvice.id.au>: > [...] > > #3 Out of order responses and heartbeat capability > > Modifying http to be able to make efficient use of a single TCP > connection > > is I think a priority for many members of this list, and is something > that > > SPDY has been specifically developed to address. I would like to expand > on > > this with the specific notion of heartbeats to be able to reliably answer > > the question: Is my connection alive or dead? If the connection is dead > the > > client will want to know as quickly as possible so that it can connect > to a > > redundant instance of the server. > > In my use cases I often want positive confirmation that my connection is > > still valid approximately every four seconds, plus assurances from > > intermediates that they are also seeing heartbeats. For long poll use > cases > > this can be taken care of by requesting a short timeout in requests and > for > > long database transactions a slow response can be replaced by an > > asynchronous interaction, but it would be helpful to have the server send > > regular updates on the processing status for a given request. A regular > high > > priority OPTIONS * request may suffice to solve this problem. > > In SPDY, I guess you can use a Ping Frame to do this, and also calculate > RTT. > > http://tools.ietf.org/html/draft-mbelshe-httpbis-spdy-00#section-2.6.5 > > The SPDY guys surely will correct me if I'm wrong. > > Regards > -- > Marcelo F. Fernández > Buenos Aires, Argentina > Lic. en Sistemas de Información > > E-Mail: fernandezm@gmail.com > Web Site: http://www.marcelofernandez.info > Twitter: @fidelfernandez > >
Received on Sunday, 22 July 2012 16:21:09 UTC