Re: Fwd: New Version Notification for draft-wouters-edns-tcp-chain-query-00.txt

Dave Lawrence <[email protected]>
Newsgroups gmane.ietf.dnsext
Message-ID <[email protected]>
Joe Abley writes:
> Isn't "keep the TCP connection open" superfluous, since in DNS the
> responsibility for closing the socket lies with the client, not the
> server? 

Yes, and no.  This is definitely what the spec says,.  For years many
operators have believed it to be a misfeature of the original spec and
have subverted it in various ways, including short timeouts before the
server kills the connection if a client EOF is not forthcoming.

It would be useful to have a way to negotiate the TCP connection
behavior, including options like signalling that the server may close
the connection as soon as the response is sent, or that the client
wants to send more than one request.  I don't think this meaning
should be bundled into the DNSSEC chain query option, however.

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