server {
        server_name relayname.com;

  location / {
    try_files /nonexistent @$http_upgrade;
  }

  location @websocket {
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header Host $host;
            proxy_pass http://127.0.0.1:7777;
            proxy_http_version 1.1;
            proxy_read_timeout 300s;
            proxy_connect_timeout 300s;
            proxy_send_timeout 300s;
            send_timeout 300s;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
  }

  location @ {
        root /var/www/html;
        index index.html;
  }