code: function _fetchHostMeta(host, callback) {
  	var url = "http://" + host + "/.well-known/host-meta";
  	console.log("Requesting host meta at " + url);
     	Http.get(url, function(err, response, content) {
  		if (err) return callback(err);
  		if (response.statusCode == 200) {
  			try {
  			    callback(null, _parseHostMeta(content));
  			} catch (e) {
  			    callback(e);
  			}
     		} else {
     			callback(new Error("Fetching host meta returned HTTP Status " + response.statusCode));
     		}
      });
  }
docs: ///// Private helper functions /*
  Get the host XRD.