SignalR . net客户端:如何向组发送消息

本文关键字：消息 net 客户端 SignalR | 更新日期: 2023-09-27 18:10:34

我正在使用来自SignalR Wiki Getting Started Hubs页面的示例聊天应用程序。我已经扩展到添加组支持，它工作得很好。

但是，现在我想从外部控制台应用程序向组发送消息。这是我的控制台应用程序的代码，下面是我的代码组。如何从代理向组发送消息?这可能吗?

// Console App
using System;
using Microsoft.AspNet.SignalR.Client.Hubs;
namespace SignalrNetClient
{
    class Program
    {
        static void Main(string[] args)
        {
            // Connect to the service
            var connection = new HubConnection("http://localhost:50116");
            var chatHub = connection.CreateHubProxy("Chat");
            // Print the message when it comes in
            connection.Received += data => Console.WriteLine(data);
            // Start the connection
            connection.Start().Wait();
            chatHub.Invoke("Send", "Hey there!");
            string line = null;
            while ((line = Console.ReadLine()) != null)
            {
                // Send a message to the server
                connection.Send(line).Wait();
            }
        }
    }
}

SignalR Web App Host:

namespace SignalrServer.Hubs
{
    public class Chat : Hub
    {
        public void Send(string message)
        {
            // Call the addMessage method on all clients            
            Clients.All.addMessage(message);
            Clients.Group("RoomA").addMessage("Group Message " + message);
        }
        //server
        public void Join(string groupName)
        {
            Groups.Add(Context.ConnectionId, groupName);
        }
    }
}

default . aspx 

<script src="http://code.jquery.com/jquery-1.8.2.min.js" type="text/javascript"></script>
<script src="Scripts/jquery.signalR-1.0.1.min.js" type="text/javascript"></script>
<!--  If this is an MVC project then use the following -->
<!--  <script src="~/signalr/hubs" type="text/javascript"></script> -->
<script src="signalr/hubs" type="text/javascript"></script>
<script type="text/javascript">
    $(function () {
        // Proxy created on the fly          
        var chat = $.connection.chat;
        // Declare a function on the chat hub so the server can invoke it          
        chat.client.addMessage = function (message) {
            $('#messages').append('<li>' + message + '</li>');
        };
        $.connection.hub.start(function () {
            chat.server.join("RoomA");
        });
        // Start the connection
        $.connection.hub.start().done(function () {
            $("#broadcast").click(function () {
                // Call the chat method on the server
                chat.server.send($('#msg').val());
            });
        });
    });
</script>
  <div>
    <input type="text" id="msg" />
<input type="button" id="broadcast" value="broadcast" />
<ul id="messages">
</ul>
  </div>

SignalR . net客户端:如何向组发送消息

我所做的类似的事情是创建一个方法来接受你选择的对象，例如

你的新类

public class MyMessage{
    public string Msg { get; set; }
    public string Group { get; set; }
}

然后在Hub中创建一个接受该对象的方法。

public void Send(MyMessage message)
{
    // Call the addMessage method on all clients            
    Clients.All.addMessage(message.Msg);
    Clients.Group(message.Group).addMessage("Group Message " + message.Msg);
}

然后从你的客户端，你可以传入这个对象。

chatHub.Invoke<MyMessage>("send", new MyMessage() { Msg = "Hello World", Group = "RoomA" });

你也可以从JS客户端调用它

chat.server.send({ Msg: "Hello World", Group: "RoomA" });
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