[GH-ISSUE #111] Sometimes receiving the russian website although I don't speak russian #331

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opened 2026-03-01 17:25:17 +03:00 by kerem · 3 comments

kerem commented

2026-03-01 17:25:17 +03:00

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Originally created by @mineo on GitHub (Jun 19, 2014).
Original GitHub issue: https://github.com/abh/ntppool/issues/111

While browsing http://www.pool.ntp.org/zone/europe (reached by going to http://www.pool.ntp.org/en/, clicking on "easy to use" in the introduction, clicking on "europe" or simply clicking the link here) I noticed that the links in the sidebar sometimes (but not always, that would have been too easy) link to the russian version of the website (the content itself is english, although that might just be because it hasn't been translated yet).

These are the request headers:

GET /zone/europe HTTP/1.1
Host: www.pool.ntp.org
Connection: keep-alive
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,/;q=0.8
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) > Chrome/35.0.1916.153 Safari/537.36
DNT: 1
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en,en-US;q=0.8,de;q=0.6

These are the response headers:

HTTP/1.1 200 OK
Date: Thu, 19 Jun 2014 11:00:49 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Cache-Control: s-maxage=900, maxage=1800
Last-Modified: Thu, 19 Jun 2014 05:32:23 GMT
P3P: CP="There's no P3P policy. Learn why here: http://www.w3.org/P3P/"
X-NPV: c92d928c-M (ntplax4)
X-UA-Compatible: IE=9
X-Varnish: 508959951
Age: 0
Via: 1.1 varnish
Vary: Accept-Language
X-Varnish-Language: ru
X-Served-By: ntplax8.ntppool.net
X-Cache: MISS
X-Cache-Hits: 0
Server: NetDNA-cache/2.2
X-Cache: HIT
Content-Encoding: gzip

The remote address Chromium shows is 108.161.188.192:80, so I guess it's using my IPv4 adress which is inside 141.24.0.0/16 (I do see some requests to ipv{4,64,6}.v6test.develooper.com, the latter two use v6 where I'm inside 2001:638:904::/48).

As you can see, my browser does not actually indicate at any point in time that I would be able to understand a russian website.

(Force) reloading the website does not always help.

The same thing happens in Firefox but I didn't find a way to copy the headers in its developer tools :(

Originally created by @mineo on GitHub (Jun 19, 2014). Original GitHub issue: https://github.com/abh/ntppool/issues/111 While browsing http://www.pool.ntp.org/zone/europe (reached by going to http://www.pool.ntp.org/en/, clicking on "easy to use" in the introduction, clicking on "europe" or simply clicking the link here) I noticed that the links in the sidebar sometimes (but not always, that would have been too easy) link to the russian version of the website (the content itself is english, although that might just be because it hasn't been translated yet). These are the request headers: > GET /zone/europe HTTP/1.1 > Host: www.pool.ntp.org > Connection: keep-alive > Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,_/_;q=0.8 > User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) > Chrome/35.0.1916.153 Safari/537.36 > DNT: 1 > Accept-Encoding: gzip,deflate,sdch > Accept-Language: en,en-US;q=0.8,de;q=0.6 These are the response headers: > HTTP/1.1 200 OK > Date: Thu, 19 Jun 2014 11:00:49 GMT > Content-Type: text/html; charset=utf-8 > Transfer-Encoding: chunked > Connection: keep-alive > Cache-Control: s-maxage=900, maxage=1800 > Last-Modified: Thu, 19 Jun 2014 05:32:23 GMT > P3P: CP="There's no P3P policy. Learn why here: http://www.w3.org/P3P/" > X-NPV: c92d928c-M (ntplax4) > X-UA-Compatible: IE=9 > X-Varnish: 508959951 > Age: 0 > Via: 1.1 varnish > Vary: Accept-Language > X-Varnish-Language: ru > X-Served-By: ntplax8.ntppool.net > X-Cache: MISS > X-Cache-Hits: 0 > Server: NetDNA-cache/2.2 > X-Cache: HIT > Content-Encoding: gzip The remote address Chromium shows is 108.161.188.192:80, so I guess it's using my IPv4 adress which is inside 141.24.0.0/16 (I do see some requests to ipv{4,64,6}.v6test.develooper.com, the latter two use v6 where I'm inside 2001:638:904::/48). As you can see, my browser does not actually indicate at any point in time that I would be able to understand a russian website. (Force) reloading the website does not always help. The same thing happens in Firefox but I didn't find a way to copy the headers in its developer tools :(

kerem closed this issue

2026-03-01 17:25:17 +03:00

kerem commented

2026-03-01 17:25:18 +03:00

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@abh commented on GitHub (Jan 14, 2015):

Hello! I only just saw this now. I wonder if the CDN is ignoring the Vary header. :-/ Does it still happen?

@abh commented on GitHub (Jan 14, 2015): Hello! I only just saw this now. I wonder if the CDN is ignoring the Vary header. :-/ Does it still happen?

kerem commented

2026-03-01 17:25:18 +03:00

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@mineo commented on GitHub (Jan 14, 2015):

That's a good question - I remember that when I reported this, I could reproduce it with less than 10 reloads (ignoring the browser cache) of that website, but now that doesn't work anymore.

From what I understand of HTTP caching (and that's not much) the X-Cache: MISS header would indicate that I'm getting sent a fresh response, no?

@mineo commented on GitHub (Jan 14, 2015): That's a good question - I remember that when I reported this, I could reproduce it with less than 10 reloads (ignoring the browser cache) of that website, but now that doesn't work anymore. From what I understand of HTTP caching (and that's not much) the `X-Cache: MISS` header would indicate that I'm getting sent a fresh response, no?

kerem commented

2026-03-01 17:25:18 +03:00

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@mineo commented on GitHub (Jan 28, 2015):

I'll close this ticket because I couldn't reproduce the behaviour over the last few days.

@mineo commented on GitHub (Jan 28, 2015): I'll close this ticket because I couldn't reproduce the behaviour over the last few days.