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   <H1>[whatwg] BWTP for WebSocket transfer protocol</H1>
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    <B>Greg Wilkins</B> 
    <A HREF="mailto:whatwg%40lists.whatwg.org?Subject=Re%3A%20%5Bwhatwg%5D%20BWTP%20for%20WebSocket%20transfer%20protocol&In-Reply-To=%3C4A82A187.4090200%40mortbay.com%3E"
       TITLE="[whatwg] BWTP for WebSocket transfer protocol">gregw at mortbay.com
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    <I>Wed Aug 12 04:03:35 PDT 2009</I>
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<PRE>Jonas Sicking wrote:

&gt;<i> I'd rather not debate about which process should be used to get to a
</I>&gt;<i> good protocol. I'd rather debate concrete proposals.
</I>
Sure.

So I think I'll keep this response short and see if I can
come up with a BWTP mkII  proposal that addresses
the feedback that I've received.



&gt;<i> So, can you describe an application which takes advantage of this
</I>&gt;<i> added value. I.e. an application that transmits JSON, and that would
</I>&gt;<i> not be put at some type of disadvantage (slower, harder to implement,
</I>&gt;<i> impossible to implement etc) if it couldn't use the new 0x01 frame
</I>&gt;<i> type.
</I>
An application that sends just a single content type like JSON is
not going to have any advantage from that proposal, because it
can assume that messages will be text/json;charset=utf8 and
be more efficient than anything that actually transmits that.

But any application that might send multiple types and/or charsets
will benefit.   Also any application that might want to conditionally
compress or encrypt a message would benefit.

Also browser that want to share a single connection between multiple
WebSocket API instances would benefit as they could use the metadata
to organize the virtual connections without the need to alter the
payload.


cheers

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