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Re: [hybi] CONNECT vs UPGRADE as method for handshake

Zhong Yu <zhong.j.yu@gmail.com> Fri, 12 November 2010 18:17 UTC

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Date: Fri, 12 Nov 2010 12:18:02 -0600
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From: Zhong Yu <zhong.j.yu@gmail.com>
To: Salvatore Loreto <salvatore.loreto@ericsson.com>
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Cc: "hybi@ietf.org" <hybi@ietf.org>
Subject: Re: [hybi] CONNECT vs UPGRADE as method for handshake
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On Fri, Nov 12, 2010 at 12:03 PM, Zhong Yu <zhong.j.yu@gmail.com> wrote:
> How about CONNECT + Upgrade?
>
>  CONNECT example.com:80 HTTP/1.1
>  Host: example.com
>  Upgrade: WebSocket
>
> CONNECT and "Host" usages follow existing conventions. "Upgrade:
> WebSocket" is simply to flag the connection as WS.
>
> WS server must respond with
>
>  HTTP/1.1 200 OK
>  Upgrade: WebSocket
>
> That takes care of the tunneling part. The meat of WS handshake should
> be done in the next two WS frames. A pure WS server doesn't need to be
> HTTP savvy. It can treat the HTTP request part as historical magic
> bits that ends with \r\n\r\n, bypass and ignore it, and return the

scratch that. that's a really bad idea. the server must validate
something in the HTTP request to make sure it's from a WS client.

> fixed HTTP response as another historical magic bits. After that, the
> "real" WS handshake is done in the WS language.
>
> - Zhong Yu
>

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