socketio 握手前中断报错

前两天折腾了下socketio，部署完发现通过nginx代理之后前端的socket无法和后端通信了，于是暴查一通，最后解决问题：

location / {

    proxy_pass http://127.0.0.1:9999;

    proxy_connect_timeout 60;

    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-NginX-Proxy true;



    # 下面是关键

    proxy_http_version 1.1;

    proxy_set_header Upgrade $http_upgrade;

    proxy_set_header Connection "upgrade";

    # 这是配置webpysessoin丢失的问题

    fastcgi_param  SCRIPT_NAME        "";

}

参考： 1. http://nginx.org/en/docs/http/websocket.html