在特定IP地址EADDRNOTAVAIL上的node.js server.listen

Question

When I try to listen on a specific IP address, I am getting an error.

var http = require('http');

http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello World\n');
}).listen(8080, "10.211.56.1");

console.log('Server running at http://10.211.56.1:8080/');

I get the following error:

➜  node-test  sudo node server.js
Server running at http://10.211.56.1:8080/
events.js:85
      throw er; // Unhandled 'error' event
            ^
Error: listen EADDRNOTAVAIL
    at exports._errnoException (util.js:746:11)
    at Server._listen2 (net.js:1139:19)
    at listen (net.js:1182:10)
    at net.js:1280:9
    at dns.js:85:18
    at process._tickCallback (node.js:355:11)
    at Function.Module.runMain (module.js:503:11)
    at startup (node.js:129:16)
    at node.js:814:3

Answer 1

This basically means the ip/port combo you are using is not available to your server. This could be because the port is already in use, or, that ip address isn't one your server is using.

You should instead be either using localhost:someport or 0.0.0.0:someport , where someport is a port that isn't currently being used.