[Solution] Using ASP. Add Live Web SignalR

The ASP. NET SignalR is a library for ASP. NET developers that simplifies the process of adding real-time WEB functionality to applications by developers. Real-time WEB functionality refers to the ability for server code to push content immediately when a connected client becomes available, rather than having the server wait for the client to request new data.

Official website: http://signalr.net/

Download: Install-package Microsoft.AspNet.SignalR

This section provides a quick and easy introduction

• Implementation principle
• Hello World
• Quick analysis
• Precautions

Implementation principle

1. If the browser <=internet Explorer 8, use the long polling method
2. If using JSONP is specified in the configuration, a long polling method is used
3. How to create a cross-domain connection, such as using WebSocket, if the condition is met (otherwise with long polling)
1. Client Support WebSocket
2. Service-Side Support WebSocket
3. Client Support Cross-origin Resource sharing

Based on the SIGNALR (SR) Implementation principle, the SR is basically fully compatible with the client browser IE8 above. It can be said that full support for jquery 1.6.4 browser can support SIGNALR.

Hello World

Create an empty ASP. NET Project

Installation

Install-package Microsoft.AspNet.SignalR

Install-package Bootstrap

Add a Hub class

    public class Chathub:hub    {public        void Send (string name, String message)        {            //Call the Broadcastmessage method to update clients.            Clients.All.broadcastMessage (name, message);        }    }

Add a Owin startup class

[Assembly:owinstartup (typeof (Signalrchart.startup))]namespace signalrchart{public    class Startup    {        public void configuration (Iappbuilder app)        {            //For more information on how to configure an application, visit http://go.microsoft.com/fwlink/? linkid=316888            app. MAPSIGNALR ();}}}    

Add a index.html

1. Import JS

    <!--Script references.    -<!--Reference the JQuery library--    <script src= "Scripts/jquery-1.9.1.min.js" ></ Script>    <!--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>

2.hub

Declare a proxy to reference the Hub.var chats = $.connection.chathub;//Call the Send method on the Hub.chat.server.sen d (name, message); Create a function, the hub can call to broadcast messages.chat.client.broadcastMessage = function (name, message) { }

Quick analysis

Hub Code

Client code

Precautions

in ASP. NET MVC 4 You can do the following:

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

If you ' re writing an ASP. 3 application, make sure, the is using url.content for your script references:

<script src= "@Url. Content (" ~/signalr/hubs ")" ></script>

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This article link: http://www.cnblogs.com/neverc/p/4617488.html

[Solution] Using ASP. Add Live Web SignalR