//manifest.json
{
  "name": "MyBca Chrome Apps",
  "description": "MyBCA Chrome Apps",
  "version": "1",
  "manifest_version": 2,
  "app": {
    "background": {
      "scripts": ["background.js"]
    }
  },
  "sockets": {
    "udp": {
      "send": "*"
    },
    "tcp": {
      "connect": "localhost:21"
    },
    "tcpServer": {
      "listen": "127.0.0.1:8080"
    }
  },
  "permissions":["storage", "webview"]
}

//jsftp
var ftp = new JSFtp({
  host: "127.0.0.1",
  port: 21, // defaults to 21
  user: "bca", // defaults to "anonymous"
  pass: "admin" // defaults to "@anonymous"
});

ftp.ls(".", function(err, res) {
  res.forEach(function(file) {
    console.log(file.name);
  });
});