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Re: comments on draft-mbelshe-httpbis-spdy-00

From: Eliot Lear <lear@cisco.com>
Date: Thu, 16 Aug 2012 15:10:00 +0200
Message-ID: <502CF128.2030107@cisco.com>
To: "William Chan (陈智昌)" <willchan@chromium.org>
CC: Patrick McManus <pmcmanus@mozilla.com>, Phillip Hallam-Baker <hallam@gmail.com>, "ietf-http-wg@w3.org Group" <ietf-http-wg@w3.org>

On 8/16/12 6:50 AM, William Chan (陈智昌) wrote:
> Can you clarify the reason to prefer srv over something like an
> Alternate-Protocol response header? I can see that Alternate-Protocol
> is suboptimal in that it requires waiting for a response first, but I
> have concerns about adding yet another DNS lookup. Chromium has
> already lowered our concurrent getaddrinfo() calls to 6 due to
> problems with home routers not being able to handle too many
> concurrent DNS queries. Adding more DNS lookups per hostname will
> further exacerbate the problem.

And whatever mechanism is used has to work with the http: schema, which
includes a port.

Eliot
Received on Thursday, 16 August 2012 13:10:31 GMT

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