From http://nginx.org/en/docs/http/ngx_http_spdy_module.html http://nginx.org/en/docs/http/ngx_http_spdy_module.html : "This module is not built by default, it

From http://nginx.org/en/docs/http/ngx_http_spdy_module.html http://nginx.org/en/docs/http/ngx_http_spdy_module.html : "This module is not built by default, it should be enabled with the --with-http_spdy_module configuration parameter." So unless you go with an unofficial binary, you'll have to compile it in yourself.