之前介绍了ServiceBus + SignalR的聊天室设计：如果还没有Azure账号，可以先完成SignalR的实现，这个例子容易上手一些。
如果要了解Service Bus，可以参照这里：
https://azure.microsoft.com/en-gb/documentation/articles/service-bus-dotnet-how-to-use-queues/
这篇是介绍Service Bus queue（1个订阅者）的，，看完了可以了解一下Service Bus Topic（多个订阅者），语法大同小异：
https://azure.microsoft.com/en-gb/documentation/articles/service-bus-dotnet-how-to-use-topics-subscriptions/
1. VIEW的代码：@{ViewBag.Title = "Signal R test";}<h2>Messages</h2><div class="container"><ul id="messages"></ul></div><div>Name : <input type="text" class="name"/></div><div><input type="text" class="msg"/> <input type="button" value="send" class="send-btn"/></div>@section scripts {<!–Script references. –><!–The jQuery library is required and is referenced by default in _Layout.cshtml. –><!–Reference the SignalR library. –><script src="~/Scripts/jquery.signalR-2.2.0.min.js"></script><!–Reference the autogenerated SignalR hub script. –><script src="~/signalr/hubs"></script><!–SignalR script to update the chat page and send messages.–><script>$(function () {// Reference the auto-generated proxy for the hub.var proxy = $.connection.serverTimeHub;// Create a function that the hub can call back to display messages.proxy.client.broadcastMessage = function (name, message) {// Add the message to the page.$(‘#messages’).append(‘<li>’ + name+" says: " + ‘</li>’);$(‘#messages’).append(‘<li>’ + htmlEncode(message) + ‘</li>’);};$(".send-btn").click(function() {proxy.server.send($(".name").val(), $(".msg").val());});// Start the connection.$.connection.hub.start();});// This optional function html-encodes messages for display in the page.function htmlEncode(value) {var encodedValue = $(‘<div />’).text(value).html();return encodedValue;}</script>} 2. 创建Hubs文件夹，添加hub类:public class ServerTimeHub : Hub{public void Send(string name, string msg){Clients.All.broadcastMessage(name, msg);}} 3. Startup.Auth（或Global） 中完成Map: app.MapSignalR();
世界上那些最容易的事情中，拖延时间最不费力。
