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

2011-07-25 11:15:49
On Sun, Jul 24, 2011 at 8:46 PM, Mark Andrews <marka(_at_)isc(_dot_)org> wrote:

Adding a SRV lookup should add 0ms if it isn't there as you should be
making A, AAAA and SRV lookups in parallel.  Non-existance is as
cachable as existance is.


But you have to wait until the SRV returns even if the A/AAAA response comes
back first, so there is a non-zero cost even with an optimal implementation.
 I am not arguing whether the cost is worth the benefits, only that there is
a cost in any case.

-- 
John A. Tamplin
Software Engineer (GWT), Google
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