SignalR

Posted

tags:

篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了SignalR相关的知识，希望对你有一定的参考价值。

 

http://blog.csdn.net/kesalin/article/details/8166925

 

打开 NuGet 的 package manager console(Tools->Library package manager)，输入：install-package SignalR.Sample，回车安装

后台：

 

using Microsoft.AspNet.SignalR;
using Microsoft.AspNet.SignalR.Hubs;
using Microsoft.Owin.Cors;
using Microsoft.Owin.Hosting;
using Owin;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SignalRBackService
{
    class Program
    {
        static void Main(string[] args)
        {
            string url = "http://192.168.2.171:8181";
            using (WebApp.Start(url))
            {
                Console.WriteLine("Server running on {0}", url);
                Console.ReadLine();
            }
        }
    }
    public class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            app.Map("/signalr", map =>
            {
                // Setup the cors middleware to run before SignalR.
                // By default this will allow all origins. You can 
                // configure the set of origins and/or http verbs by
                // providing a cors options with a different policy.
                map.UseCors(CorsOptions.AllowAll);

                var hubConfiguration = new HubConfiguration
                {
                    // You can enable JSONP by uncommenting line below.
                    // JSONP requests are insecure but some older browsers (and some
                    // versions of IE) require JSONP to work cross domain
                    // EnableJSONP = true
                    //EnableJSONP = true,
                    //EnableDetailedErrors = true,
                    //EnablejavascriptProxies = true
                };

                // Run the SignalR pipeline. We‘re not using MapSignalR
                // since this branch is already runs under the "/signalr"
                // path.
                map.RunSignalR(hubConfiguration);
            });
        }
    }
    [HubName("myHub")]
    public class MyHub : Hub
    {

        public void Send(string group, string recipient, string name, string message)
        {
            // IHubContext context = GlobalHost.ConnectionManager.GetHubContext<MyHub>();
            var dd = Context.ConnectionId;
            #region  单个人

            //if (!string.IsNullOrEmpty(recipient))
            //{
            //    //单个人
            //    Clients.Client(recipient).addMessage(name, message);
            //}
            //else
            //{
            //    //全部
            //    Console.WriteLine(message);
            //    Clients.All.addMessage(name, message);
            //}

            #endregion

            #region 群组
           
            if (!string.IsNullOrEmpty(group))
            {
                var ids = group.Split(‘,‘);
                foreach (var id in ids)
                {
                    Groups.Add(id, "测试组");
                }
                Clients.Group("测试组").addMessage(name, message);
            }

            #endregion



            //var toSelfinfo = "You had sent message " + message;
            //Caller.addSomeMessage(clientName, toSelfinfo);
            //// Call the addMessage method on all clients
            //Clients.addSomeMessage(clientName, message);
            //Clients[Context.ConnectionId].addSomeMessage(name, message);
        }


    }
}

前端：

<!DOCTYPE html>
<html>
<head>
    <title>SignalR Simple Chat</title>
    <style type="text/css">
        .container {
            background-color: #99CCFF;
            border: thick solid #808080;
            padding: 20px;
            margin: 20px;
        }
    </style>
</head>
<body>
    <div class="container">
        消息：<input type="text" id="message" />
        接收者：<input type="text" id="recipientId" />
        群组：<input type="text" id="groupId" />
        <input type="button" id="sendmessage" value="Send" />
        <input type="hidden" id="displayname" />
        <ul id="discussion"></ul>
    </div>
    <!--Script references. -->
    <!--Reference the jQuery library. -->
    <script src="Scripts/jquery-1.8.2.min.js"></script>
    <!--Reference the SignalR library. -->
    <script src="Scripts/jquery.signalR-2.1.1.min.js"></script>
    <!--Reference the autogenerated SignalR hub script. -->
    <script src="http://192.168.2.171:8181/signalr/hubs"></script>
    <!--Add script to update the page and send messages.-->
    <script type="text/javascript">
        $(function () {
        //Set the hubs URL for the connection
            $.connection.hub.url = "http://192.168.2.171:8181/signalr";
            for(var i in  $.connection){
                console.log(i+":"+$.connection)
            }
            
            // Declare a proxy to reference the hub.
            var chat = $.connection.myHub;
            
            // Create a function that the hub can call to broadcast messages.
            chat.client.addMessage = function (name, message) {
                alert(message);
                // Html encode display name and message.
                //var encodedName = $(‘<div />‘).text(name).html();
                //var encodedMsg = $(‘<div />‘).text(message).html();
                // Add the message to the page.
                //$(‘#discussion‘).append(‘<li><strong>‘ + encodedName
                   // + ‘</strong>:&nbsp;&nbsp;‘ + encodedMsg + ‘</li>‘);
            };
            // Get the user name and store it to prepend to messages.
            $(‘#displayname‘).val(prompt(‘Enter your name:‘, ‘‘));
            // Set initial focus to message input box.
            $(‘#message‘).focus();
            // Start the connection.
            $.connection.hub.start().done(function () {
                $(‘#sendmessage‘).click(function () {
                    // Call the Send method on the hub.
                    chat.server.send($(‘#groupId‘).val(),$(‘#recipientId‘).val(), $(‘#displayname‘).val(), $(‘#message‘).val());
                    // Clear text box and reset focus for next comment.
                    $(‘#message‘).val(‘‘).focus();
                });
            });
        });
    </script>
</body>
</html>

 

以上是关于SignalR的主要内容，如果未能解决你的问题，请参考以下文章

SignalR OnConnected 与多台服务器和 Redis 背板

C# SignalR：从代码隐藏更新数据的问题

角度 SignalR 经常断开连接并显示错误状态代码 1006

websocket握手代码期间无法连接signalR错误：400

ASP.NET Core SignalR ：SignalR Javascript 客户端

SignalR - 从服务器端代码调用 Hub 类方法（存在于单独的 MVC 项目中）