Re: [hybi] Frame size

On Mon, Apr 19, 2010 at 4:33 AM, Jamie Lokier <jamie@shareable.org> wrote:

> Thomson, Martin wrote:
> > You make a good case... for SCTP :p
>
> Yes, absolutely!
>
> SCTP would be a much better match for the problem.
>
> Meanwhile, we have to work over TCP.
>
> Remember that Google's tests show you can only communicate from many
> client sites over:
>
>   - TCP port 80, using HTTP
>   - TCP port 443, using CONNECT
>   - No other TCP ports.
>

Are you talking about the Google WebSocket test?  If so, that is not quite
right.
The Google Websockets test shows that using HTTP over non-port 80 has more
success than HTTP over port 80.  We believe this is due to proxies.

  - (Not shown in that test, but) no other IP protocols
>
> It would be great to use SCTP when possible, but the basic protocol
> has to use TCP if it's to support Web Applications over the Web Using
> Internet.

> If you have a proposal for opportunistically upgrading to SCTP, that
> would be great.
>
> Perhaps if my ideas for proxies get taken seriously, we can put the
> SCTP upgrade in there, transparent to WebSocket applications :-)
>

The problem with SCTP is NAT.  NAT services generally only work for TCP and
UDP.  And what percentage of the net uses NAT today?  Everyone.

I suppose SCTP might be deployable those using IPv6.

Mike

>
> -- Jamie
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