Install-Package Microsoft.AspNet.SignalR

// 调用所有客户端的sendMessage方法

Clients.All.sendMessage(name, message);

@section scripts

{

    <!--引用SignalR库. -->

    <script src="~/Scripts/jquery.signalR-2.2.0.min.js"></script>

     <!--引用自动生成的SignalR 集线器(Hub)脚本.在运行的时候在浏览器的Source下可看到 -->

    <script src="~/signalr/hubs"></script>

    <script>

        $(function () {

            // 引用自动生成的集线器代理

            var chat = $.connection.serverHub;

            // 定义服务器端调用的客户端sendMessage来显示新消息

            chat.client.sendMessage = function (name, message) {

                // 向页面添加消息

                $('#discussion').append('<li><strong>' + htmlEncode(name)

                    + '</strong>: ' + htmlEncode(message) + '</li>');

            };

            // 设置焦点到输入框

            $('#message').focus();

            // 开始连接服务器

            $.connection.hub.start().done(function () {

                $('#sendmessage').click(function () {

                    // 调用服务器端集线器的Send方法

                    chat.server.send($('#message').val());

                    // 清空输入框信息并获取焦点

                    $('#message').val('').focus();

                });

            });

        });

        // 为显示的消息进行Html编码

        function htmlEncode(value) {

            var encodedValue = $('<div />').text(value).html();

            return encodedValue;

        }

    </script>

}

The following errors occurred while attempting to load the app.

- No assembly found containing an OwinStartupAttribute.

- No assembly found containing a Startup or [AssemblyName].Startup class.

To disable OWIN startup discovery, add the appSetting owin:AutomaticAppStartup with a value of "false" in your web.config.

To specify the OWIN startup Assembly, Class, or Method, add the appSetting owin:AppStartup with the fully qualified startup class or configuration method name in your web.config.

<appSettings>

    <add key="owin:AutomaticAppStartup" value="false" />

</appSettings>

GET http://localhost:10292/signalr/hubs 404 (Not Found)

Uncaught TypeError: Cannot read property 'client' of undefined

6. In Solution Explorer, right-click the project, then click Add | OWIN Startup Class. Name the new class Startup and click OK.

Note: If you are using Visual Studio 2012, the OWIN Startup Class template will not be available. You can add a plain Class called Startup instead.

using Microsoft.Owin;

using Owin;

[assembly: OwinStartup(typeof(SignalRChat.Startup))]

namespace SignalRChat

{

    public class Startup

    {

        public void Configuration(IAppBuilder app)

        {

            // Any connection or hub wire up and configuration should go here

            app.MapSignalR();

        }

    }

}

element