Asp.net MVC4 + signalR 聊天室实现

之前介绍了ServiceBus + SignalR的聊天室设计：
http://blog.csdn.net/lan_liang/article/details/46480529


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();