location /baidu/ #二级目录 https://www.cmliu.net/baidu
{
proxy_redirect off;
proxy_pass http://www.baidu.com/; #https与http要分清,最后的/一定不能少
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Host www.baidu.com; #发送域名 默认原域名就用$http_host
}