给nginx配置SSL证书之后，https可以正常访问，http访问显示400错误，nginx的配置如下：
server {
listen 80 default backlog=2048;
listen 443;
server_name lvtao.net;
root /var/www/html;
ssl on;
ssl_certificate /usr/local/Tengine/sslcrt/lvtao.net.crt;
ssl_certificate_key /usr/local/Tengine/sslcrt/lvtao.net.key;
}
http访问的时候，报错如下：
server {
listen 80 default backlog=2048;
listen 443 ssl;
server_name lvtao.net;
root /var/www/html;
ssl_certificate /usr/local/Tengine/sslcrt/lvtao.net.crt;
ssl_certificate_key /usr/local/Tengine/sslcrt/lvtao.net.Key;
}
原文：https://www.cnblogs.com/yxfcnbg/p/11355461.html