Q:

{NodeJS} Got stupid ws error getaddrinfo ENOTFOUND echo.websocket.org

I use ws library.
The code:
WebSocket = require("ws");

ws = new WebSocket("ws://echo.websocket.org");
ws.onopen = function() {
    ws.send("Hello, world!");
};
ws.onmessage = function(msg) {
    console.log("Message: " + msg.data);
};
ws.onerror = function(e) {
    console.log(e);
};
ws.onclose = function() {
    console.log("Closed");
};

The console returns:
{ [Error: getaddrinfo ENOTFOUND echo.websocket.org echo.websocket.org:80]
  code: 'ENOTFOUND',
  errno: 'ENOTFOUND',
  syscall: 'getaddrinfo',
  hostname: 'echo.websocket.org',
  host: 'echo.websocket.org',
  port: 80,
  type: 'error',
  target:
   WebSocket {
     domain: null,
     _events:
      { open: [Object],
        message: [Object],
        error: [Object],
        close: [Object] },
     _eventsCount: 4,
     _maxListeners: undefined,
     _socket: null,
     _ultron: null,
     _closeReceived: false,
     bytesReceived: 0,
     readyState: 0,
     supports: { binary: true },
     extensions: {},
     _isServer: false,
     url: 'ws://echo.websocket.org',
     protocolVersion: 13 } }

Yesterday it worked, but today, it doesn't work. I tried reinstalling Node.JS and ws, but it didn't help. How can I fix it?

A:

I ran cmd.exe and ping echo.websocket.org. Then I tried run my script again. I don't know why, but it worked. Probably it's a bug with Node.JS DNS.

