nginx websocket

nginx.conf

upstream backend {
  server  localhost:9000;
}

server {
  listen      80;
  server_name hoge.org;
  location / {
    proxy_pass http://backend;

    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_connect_timeout 43200000;
    proxy_read_timeout 86400;
}