| |
| /** |
| * Module dependencies. |
| */ |
| |
| var dns = require('dns'); |
| |
| /** |
| * Module exports. |
| */ |
| |
| module.exports = dnsResolve; |
| |
| dnsResolve.async = true; |
| |
| /** |
| * Resolves the given DNS hostname into an IP address, and returns it in the dot |
| * separated format as a string. |
| * |
| * Example: |
| * |
| * ``` js |
| * dnsResolve("home.netscape.com") |
| * // returns the string "198.95.249.79". |
| * ``` |
| * |
| * @param {String} host hostname to resolve |
| * @return {String} resolved IP address |
| */ |
| |
| function dnsResolve (host, fn) { |
| var family = 4; |
| dns.lookup(host, family, function (err, ip) { |
| if (err) return fn(err); |
| fn(null, ip || '127.0.0.1'); |
| }); |
| } |
