Re: Fwd: New Version Notification for draft-wouters-edns-tcp-keepalive-00.txt (fwd)

Mark Andrews <[email protected]>
Newsgroups gmane.ietf.dnsext
Message-ID <[email protected]>
In message <[email protected]>, Paul Wouters w
rites:
> On Fri, 18 Oct 2013, Mark Andrews wrote:
> 
> > A nameserver that does not attempt to read a second request on a
> > TCP socket is *broken*.  If you are the vendor of such a product
> > fix it and issue a update notice.
> 
> Do you still see value in the edns-tcp-keepalive and timeout value,
> or do you think dns clients can already assume they can sent multiple
> queries and keep the tcp connection open for a reasonably time as per
> RFC 5966?

It will either work (the server is conformant and not over loaded)
or it won't (the server is over loaded or broken).  Sending multiple
queries over TCP is a optimisation.

If there is more than one broken vendor then writing a RFC saying
this is a common problem may be useful.

> Is there any measurement data out there to see how well multiple queries
> over TCP works?
> 
> Paul
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: [email protected]
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