Nginx 配置支持 WebSocket

找到nginx的配置文件：nginx.conf，增加以下三行配置。

示例：

 server {
        listen       80;
        server_name www.test.com;
        location / {
            proxy_pass  http://192.168.90.90:8080;

            # WebScoket Support
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";

            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
        }
	access_log logs/www.test.com.log;
    }