why does spdy not function here with nginx 1.5.10?

Question

i have compiled nginx 1.5.10 with the spdy module on centos 6.5 and it is operating without a problem, as far as i know except, that spdy is apparently not being used.

i have added the 'spdy' option to the listen directive in nginx.conf and restarted the server, yet the various spdy checking methods, such as the firefox plugin that is available and also the website: https://spdycheck.org/ both show that spdy is not being used on my site.

the line in nginx.conf is:

listen 443 ssl spdy default_server;

i saw this thread: How to set up SPDY Protocol over Nginx?

and looked to see if i needed to change the DAEMON or PATH lines in /etc/init.d/nginx - yet in my versions those lines are not present at all.

the output of nginx -V is:

nginx version: nginx/1.5.10 built by gcc 4.4.7 20120313 (Red Hat 4.4.7-4) (GCC) TLS SNI support enabled configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-http_ssl_module --with-http_realip_module --with-http_addition_module --with-http_sub_module --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_random_index_module --with-http_secure_link_module --with-http_stub_status_module --with-http_auth_request_module --with-mail --with-mail_ssl_module --with-file-aio --with-ipv6 --with-http_spdy_module --with-cc-opt='-O2 -g'

any tips welcomed!

Answer 1

SPDY/3.1 isn't supported by Firefox 26. The support was added to Firefox in version 27, see release notes.