node.js – 使用django设置nginx和使用websocket设置nodejs的配置(wss：//)

upstream node{
    server 127.0.0.1:8081  max_fails=1 fail_timeout=20s;

}
server {
    listen 8000 default_server ssl;
    server_name bla.bla;

    ssl_certificate path;
    ssl_certificate_key path;

    LOCATIOn /serve {
        proxy_pass http://node;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_cache_bypass 1;
        proxy_no_cache 1;
        proxy_redirect off;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-ForWARDed-For $proxy_add_x_forWARDed_for;
        proxy_set_header X-Nginx-Proxy true;
        proxy_connect_timeout 2s;
    }
    LOCATIOn / {
        include         uwsgi_params;
        uwsgi_pass      unix:///var/uwsgi/sel.sock;
    }
}

我有一个nodejs服务器,在端口8081上运行websocket服务器

var WebSocketServer = require('ws').Server,wss = new WebSocketServer({ port: 8081,path: "/serve" });

现在,当我使用html页面访问websocket服务器时

var websocket = new WebSocket("wss://host:8081/serve"); // works
var websocket = new WebSocket("wss://host:8000/serve"); // doesn't work get 504 error

我究竟做错了什么？任何人都可以指出我的错误,并显示一个正确配置它的指针.

编辑：我的Nginx版本是Nginx版本：Nginx / 1.4.6(Ubuntu)