[Add] Googles Experimental DoH Endpoint

["Winfield, Alister" <[e-mail]>]

**Reposting this here seems on topic for both doh and add **

Oh by the way I noticed this and it seems counter to the claim of DoH only running on 8.8.8.8.


To keep it short I’ve removed the SSL setup step from the example.


$ openssl s_client -connect search.google.com:443 -servername search.google.com
…
---

GET /experimental?dns=AAABAAABAAAAAAAAA3d3dwdleGFtcGxlA2NvbQAAAQAB HTTP/1.1
host: dns.google.com

HTTP/1.1 200 OK
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
Access-Control-Allow-Origin: *
Date: Tue, 14 May 2019 13:49:53 GMT
Expires: Tue, 14 May 2019 13:49:53 GMT
Cache-Control: private, max-age=20595
Content-Type: application/dns-message
Server: HTTP server (unknown)
Content-Length: 49
X-XSS-Protection: 0
X-Frame-Options: SAMEORIGIN
Alt-Svc: quic=":443"; ma=2592000; v="46,44,43,39"

??wwwexamplecom?
                Ps]??"^C
$


Tried a few more gmail.google.com, www.youtube.com, news.google.com

So I guess it’s their entire web estate

As the obvious thing to test Firefox seems to have no official way to do this but I suspect it would be trivial to allow it. Plus malicious applications / malware etc don’t care about rules so expect them to be using this fact already.

--
Alister Winfield.

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