Re: [Doh] [Ext] a tad confused on response sizes
Tony Finch <dot@dotat.at> Tue, 05 June 2018 18:12 UTC
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Date: Tue, 05 Jun 2018 19:12:31 +0100
From: Tony Finch <dot@dotat.at>
To: Star Brilliant <m13253@hotmail.com>
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Subject: Re: [Doh] [Ext] a tad confused on response sizes
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Star Brilliant <m13253@hotmail.com> wrote: > > The DoH client does not need to understand the TC bit. It just pass the TC bit to downstream. > Let me explain how this work: > > When the downstream finds the TC bit, it should retry with TCP to the DoH client. > And the DoH client should return the exactly same answer with TC. > The downstream should stop retrying with the second TC (since there are no more methods to retry). I'm afraid I don't understand that at all. In many cases, the DoH client will be embedded in an application as an alternative to a traditional stub resolver, so it doesn't have a downstream that can retry. > > My trivial DoH code makes upstream queries over TCP, so the EDNS buffer > > size is ignored. > > Just a friendly warning: > I have done this thing in my productive server, and soon get banned by > some authoritative servers. My DoH server is a proxy that talks to a full-service resolver that I control. Tony. -- f.anthony.n.finch <dot@dotat.at> http://dotat.at/ fight poverty, oppression, hunger, ignorance, disease, and aggression
- Re: [Doh] [Ext] a tad confused on response sizes Star Brilliant
- Re: [Doh] [Ext] a tad confused on response sizes Andrew Sullivan
- Re: [Doh] [Ext] a tad confused on response sizes Patrick McManus
- Re: [Doh] [Ext] a tad confused on response sizes Massimiliano Fantuzzi
- Re: [Doh] [Ext] a tad confused on response sizes Ray Bellis
- [Doh] a tad confused on response sizes bert hubert
- Re: [Doh] a tad confused on response sizes Dave Lawrence
- Re: [Doh] [Ext] a tad confused on response sizes Paul Hoffman
- Re: [Doh] a tad confused on response sizes Tony Finch
- Re: [Doh] [Ext] a tad confused on response sizes Tony Finch
- Re: [Doh] [Ext] a tad confused on response sizes Paul Hoffman
- Re: [Doh] [Ext] a tad confused on response sizes Andrew Sullivan
- Re: [Doh] [Ext] a tad confused on response sizes Tony Finch
- Re: [Doh] [Ext] a tad confused on response sizes Stephane Bortzmeyer
- Re: [Doh] [Ext] a tad confused on response sizes Stephane Bortzmeyer
- Re: [Doh] [Ext] a tad confused on response sizes Tony Finch
- Re: [Doh] [Ext] a tad confused on response sizes Andrew Sullivan
- Re: [Doh] [Ext] a tad confused on response sizes Star Brilliant
- Re: [Doh] [Ext] a tad confused on response sizes Tony Finch
- Re: [Doh] [Ext] a tad confused on response sizes Paul Hoffman
- Re: [Doh] [Ext] a tad confused on response sizes Dave Lawrence
- Re: [Doh] [Ext] a tad confused on response sizes Dave Lawrence
- Re: [Doh] [Ext] a tad confused on response sizes Star Brilliant
- Re: [Doh] [Ext] a tad confused on response sizes Tony Finch
- Re: [Doh] [Ext] a tad confused on response sizes Tony Finch
- Re: [Doh] [Ext] a tad confused on response sizes Star Brilliant
- Re: [Doh] [Ext] a tad confused on response sizes Tony Finch
- Re: [Doh] [Ext] a tad confused on response sizes Paul Hoffman
- Re: [Doh] [Ext] a tad confused on response sizes Andrew Sullivan
- Re: [Doh] [Ext] a tad confused on response sizes Tony Finch