Re: [hybi] Last Call: <draft-ietf-hybi-thewebsocketprotocol-10.txt> (The WebSocket protocol) to Proposed Standard

Willy Tarreau <w@1wt.eu> Sun, 24 July 2011 19:32 UTC

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Date: Sun, 24 Jul 2011 21:32:30 +0200
From: Willy Tarreau <w@1wt.eu>
To: =?iso-8859-1?Q?I=F1aki?= Baz Castillo <ibc@aliax.net>
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References: <20110721163910.GA16854@1wt.eu> <CAP992=FrX5VxP2o0JLNoJs8nXXba7wbZ6RN9wBUYC0ZSN_wbAg@mail.gmail.com> <9031.1311270000.588511@puncture> <CALiegf=pYzybvc7WB2QfPg6FKrhLxgzHuP-DpuuMfZYJV6Z7FQ@mail.gmail.com> <B2C17B21-EA8A-4698-8C41-F55A9AA140D4@gbiv.com> <CALiegfkshhJVUHzTD1Kka5+RjGwZ5CS2J=Qk92jfSBg6Z0VfOQ@mail.gmail.com> <20110724121622.GS22405@1wt.eu> <CALiegfkzaMOHBz0-Sgj7HWtQX1jadczDu6t=5PoiNPMG69ZyVg@mail.gmail.com> <20110724185706.GA22405@1wt.eu> <CALiegf=smDo6CNQE+cA_2__BLr5wqbmr75unDJSMitavD4ySyA@mail.gmail.com>
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Cc: "Roy T. Fielding" <fielding@gbiv.com>, Server-Initiated HTTP <hybi@ietf.org>, IETF-Discussion <ietf@ietf.org>
Subject: Re: [hybi] Last Call: <draft-ietf-hybi-thewebsocketprotocol-10.txt> (The WebSocket protocol) to Proposed Standard
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On Sun, Jul 24, 2011 at 09:02:59PM +0200, Iñaki Baz Castillo wrote:
> 2011/7/24 Willy Tarreau <w@1wt.eu>eu>:
> > But that's not what I meant, I meant that DNS is not the only solution
> > to resolve host names. WINS, NIS and /etc/hosts are usable too. When I
> > was a student in 94, we had all our passwords and hostnames in NIS and
> > no DNS was configured. It worked like a charm. DNS is not something
> > mandatory at all for many protocols. It just happens to be the standard
> > over the public Internet.
> 
> Ok, I get your point now :)
> But, do current webbrosers resolve names using anything but DNS A?
> (well, I know that they use /etc/hosts). Anyhow, WINS / NIS /etc/hosts
> and such stuff just maps a hostname into a single IP. It's the
> equivalent of a DNS A resource record. Think about locating a mail
> server (MX is required), you need a DNS server.

... or a static entry (the "Smart Relay host" entry you see in on the DS
line in sendmail.cf). That's the case of any mail client in a campus, they
don't use DNS to send outgoing mail. And even within the mail relays and
servers, it's quite common to have a relaydomains file to map domains to
servers.

Willy