HTTP2 教程——如何使用Nginx 配置 HTTP2
HTTP2 在 2015年就已经正式发布了，现在如果网站还在使用HTTP/1.1 是不是就有点赶不上潮流了。不慌，这里我们就来看一下如何使用Nginx将网站升级为HTTP2。
安装Nginx
感觉这一栏就是多余，即然说的是使用Nginx配置HTTP2，当然肯定是要安装Nginx。而Nginx的安装随便一搜到处都是。所以这里我们不具体说如何安装Nginx。我们只说两个具体的点。
首先是Nginx的版本不能低于Nginx 1.10。然后就是默认编译的 Nginx 并不包含 h2 模块，我们需要加入参数来编译。
$ ./configure --with-http_v2_module
# 然后就是编译安装了
$ make && make install
还有就是HTTP2 要和 HTTPS一起。因此需要openssl的支持。这里的openssl的版本也是有要求的。最低要求1.0.2，如果不满足，还得手动下载openssl，然后在编译时使用–with-openssl指定openssl目录。
配置 Nginx
这里，废话不多说，直接上配置
server {
listen 443 ssl http2;
listen [::]:443 ssl http2;
server_name www.jiyik.com jiyik.com;
ssl_certificate /certificates/www.jiyik.com/fullchain.pem;
ssl_certificate_key /certificates/www.jiyik.com/privkey.pem;
ssl_trusted_certificate /certificates/www.jiyik.com/fullchain.pem;
ssl_session_timeout 1d;
ssl_session_cache shared:SSL:50m;
ssl_session_tickets off;
部分配置项就是张的这样，剩余的可以去网补。
检测是否支持HTTP2
上面配置完成之后，重启Nginx。然后再访问我们的网站，可以通过 chrome浏览器的开发者工具查看是否支持HTTP2。
这里推荐一款Chrome的扩展 HTTP/2 and SPDY indicator 可以查看是否支持HTTP2
运行结果如下
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