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Re: [hybi] Multiplexing: Pre-AddChannelResponse quota

Takeshi Yoshino <tyoshino@google.com> Mon, 25 June 2012 02:19 UTC

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From: Takeshi Yoshino <tyoshino@google.com>
Date: Mon, 25 Jun 2012 11:19:18 +0900
Message-ID: <CAH9hSJbngbwRAM3cMG7TH8mPhUVpvJ-LyK+3nckMuiEZbN-g6w@mail.gmail.com>
To: Jamie Lokier <jamie@shareable.org>
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Cc: hybi@ietf.org
Subject: Re: [hybi] Multiplexing: Pre-AddChannelResponse quota
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On Fri, Jun 22, 2012 at 9:17 PM, Jamie Lokier <jamie@shareable.org> wrote:

> Why not just send NewChannelSlots[ADD=3], instead of 3
> NewChannelSlot messages?
>
> The slot messages are wasteful if the server is happy to accept 1000
> low-usage slots from the beginning.
>
> >    (C) receives FlowControl[ID=1, quota=1024]
> >    (C) receives FlowControl[ID=2, quota=1024]
> >    (C) receives FlowControl[ID=3, quota=1024]
> >    Now (C) is allowed to send pre-handshake data up to 1024 for each of
> >    allocated slots.
>
> Why not just send NewChannelSlots[ADD=3,PER_CHANNEL_QUOTA=1024]?
>
>
This is fine if we don't need a way to increase pre-handshake quota for the
slots after allocating them e.g. when the server gets more room for
processing after the allocation.

   (C) receives NewChannelSlots[ADD=1,PER_CHANNEL_QUOTA=1024].
>
> (Or it can be a flag in the AddChannelResponse parameters in the
> common case where it's COUNT=1 and the data quotas haven't changed,
> but that's just a special case to compress a message.)
>

Yes.

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