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Possible bug http2 module

February 06, 2016 12:16PM
Hello,

I am running a WordPress multisite install and recently turned off http2
on the domain in order to use a third party module which evidently
doesn't play nicely with http2 (echo module). In testing I noticed that
the site was still being served with http2 enabled according to both
Chrome and Firefox. I confirmed with curl.

I recompiled nginx without any third party modules:

# nginx -V
nginx version: nginx/1.9.10
built with OpenSSL 1.0.2f 28 Jan 2016
TLS SNI support enabled
configure arguments: --prefix=/usr/local/etc/nginx --with-cc-opt='-I
/usr/local/include' --with-ld-opt='-L /usr/local/lib'
--conf-path=/usr/local/etc/nginx/nginx.conf
--sbin-path=/usr/local/sbin/nginx --pid-path=/var/run/nginx.pid
--error-log-path=/var/log/nginx-error.log --user=www --group=www
--with-file-aio --with-ipv6
--http-client-body-temp-path=/var/tmp/nginx/client_body_temp
--http-fastcgi-temp-path=/var/tmp/nginx/fastcgi_temp
--http-proxy-temp-path=/var/tmp/nginx/proxy_temp
--http-scgi-temp-path=/var/tmp/nginx/scgi_temp
--http-uwsgi-temp-path=/var/tmp/nginx/uwsgi_temp
--http-log-path=/var/log/nginx-access.log --with-http_stub_status_module
--with-pcre --with-http_v2_module --with-http_ssl_module


I then adjusted the config files so as not to reference any third party
modules and performed a binary "upgrade".

I still see that http2 is in use on both Chrome and Firefox, and also
via curl.

# curl -I -k https://my.ip4.add.ress/
HTTP/2.0 302
server:nginx/1.9.10
date:Sat, 06 Feb 2016 16:49:44 GMT
content-type:text/html; charset=UTF-8

# curl -I https:/mydomain.net/
HTTP/2.0 200
server:nginx/1.9.10
date:Sat, 06 Feb 2016 16:50:41 GMT
content-type:text/html; charset=UTF-8

There are other domains on that IPv4 which use http2. Disabling http2 on
all of them resulted in the expected behavior in the browsers and in curl:

# curl -I -k https:///my.ip4.add.ress/
HTTP/1.1 302 Moved Temporarily
Server: nginx/1.9.10
Date: Sat, 06 Feb 2016 17:03:39 GMT
Content-Type: text/html; charset=UTF-8
Connection: keep-alive

# curl -I https://mydomain.net/
HTTP/1.1 200 OK
Server: nginx/1.9.10
Date: Sat, 06 Feb 2016 17:05:05 GMT
Content-Type: text/html; charset=UTF-8
Connection: keep-alive

I don't see any reference to this at
http://nginx.org/en/docs/http/ngx_http_v2_module.html so I am guessing
this is unintended.

Obvious workaround is to place this domain on an IPv4 in which there are
no http2 sites.

More permanent solution should be considered.

--
Jim Ohlstein


"Never argue with a fool, onlookers may not be able to tell the
difference." - Mark Twain

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Subject Author Posted

Possible bug http2 module

Jim Ohlstein February 06, 2016 12:16PM

Re: Possible bug http2 module

Валентин Бартенев February 06, 2016 12:24PM

Re: Possible bug http2 module

Jim Ohlstein February 06, 2016 12:46PM

Re: Possible bug http2 module

Валентин Бартенев February 06, 2016 01:00PM

Re: Possible bug http2 module

Jim Ohlstein February 06, 2016 02:52PM



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