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/**
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* Module dependencies.
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*/
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var net = require('net');
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var ip = require('ip');
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/**
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* Module exports.
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*/
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module.exports = myIpAddress;
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myIpAddress.async = true;
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/**
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* Returns the IP address of the host that the Navigator is running on, as
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* a string in the dot-separated integer format.
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*
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* Example:
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*
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* ``` js
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* myIpAddress()
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* // would return the string "198.95.249.79" if you were running the
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* // Navigator on that host.
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* ```
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*
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* @return {String} external IP address
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*/
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function myIpAddress (fn) {
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// 8.8.8.8:53 is "Google Public DNS":
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// https://developers.google.com/speed/public-dns/
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var socket = net.connect({ host: '8.8.8.8', port: 53 });
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socket.once('error', function(err) {
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// if we fail to access Google DNS (as in firewall blocks access),
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// fallback to querying IP locally
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fn(null, ip.address());
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});
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socket.once('connect', function () {
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socket.removeListener('error', fn);
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var ip = socket.address().address;
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socket.destroy();
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fn(null, ip);
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});
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}
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