1
 2/*!
 3 * Connect - vhost
 4 * Copyright(c) 2010 Sencha Inc.
 5 * Copyright(c) 2011 TJ Holowaychuk
 6 * MIT Licensed
 7 */
 8
 9/**
10 * Vhost:
11 *
12 *   Setup vhost for the given `hostname` and `server`.
13 *
14 *     connect()
15 *       .use(connect.vhost('foo.com', fooApp))
16 *       .use(connect.vhost('bar.com', barApp))
17 *       .use(connect.vhost('*.com', mainApp))
18 *
19 *  The `server` may be a Connect server or
20 *  a regular Node `http.Server`.
21 *
22 * @param {String} hostname
23 * @param {Server} server
24 * @return {Function}
25 * @api public
26 */
27
28module.exports = function vhost(hostname, server){
29  if (!hostname) throw new Error('vhost hostname required');
30  if (!server) throw new Error('vhost server required');
31  var regexp = new RegExp('^' + hostname.replace(/[^*\w]/g, '\\$&').replace(/[*]/g, '(?:.*?)')  + '$', 'i');
32  if (server.onvhost) server.onvhost(hostname);
33  return function vhost(req, res, next){
34    if (!req.headers.host) return next();
35    var host = req.headers.host.split(':')[0];
36    if (!regexp.test(host)) return next();
37    if ('function' == typeof server) return server(req, res, next);
38    server.emit('request', req, res);
39  };
40};