Tridion GUI Extension js file to send messages from SignalR to the MessageCenter. Part of the SignalR + Tridion MessageCenter notification.

notification.js

var $j = jQuery.noConflict();
var userid = GetUserID();
var connection = $j.connection('http://localhost:8123/channel');

connection.start()
	.done(function() {
		connection.send('join ' + userid);
		connection.received(function (data) {
			// Show MessageCenter Message
			$messages.registerNotification(data);
			console.log('message received, ' + userid + ':' + data);
		});
	})
	.fail(function() {
		console.log('error connecting to signalr');
	});
	
function GetUserID() {
	var id = Tridion.UI.UserSettings.getJsonUserSettings(true).User["@ID"];
	var pos = id.indexOf('-');
	id = id.substr(pos + 1);
	pos = id.indexOf('-');
	id = id.substr(0, pos);
	return id;
}