如下：

server {
    listen 80;
    server_name netdata.home.com;
    location / {
        proxy_pass http://192.168.5.4:19999;
        proxy_redirect off;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        #添加长链接支持。
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
 

    }
}