AJAX在C#中如何優雅地處理WebSocket消息確認

在C#中，使用WebSocket進行實時通信是一種常見的方法。為了優雅地處理WebSocket消息確認，你可以采用以下步驟：

1. 首先，創建一個WebSocket服務器。你可以使用System.Net.WebSockets命名空間中的HttpListener類來實現這個功能。以下是一個簡單的WebSocket服務器示例：

using System;
using System.Net;
using System.Net.WebSockets;
using System.Threading;
using System.Threading.Tasks;

namespace WebSocketServer
{
    class Program
    {
        static async Task Main(string[] args)
        {
            var listener = new HttpListener();
            listener.Prefixes.Add("http://localhost:8080/");
            listener.Start();

            while (true)
            {
                var context = await listener.GetContextAsync();
                if (context.Request.IsWebSocketRequest)
                {
                    ProcessWebSocketRequest(context);
                }
            }
        }

        private static async void ProcessWebSocketRequest(HttpListenerContext context)
        {
            var webSocketContext = await context.AcceptWebSocketAsync(null);
            var webSocket = webSocketContext.WebSocket;

            var buffer = new byte[1024 * 4];
            var result = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.None);

            while (!result.CloseStatus.HasValue)
            {
                // Process the received message
                var message = Encoding.UTF8.GetString(buffer, 0, result.Count);
                Console.WriteLine($"Received: {message}");

                // Send a confirmation message
                var confirmationMessage = "Message received";
                var confirmationBuffer = Encoding.UTF8.GetBytes(confirmationMessage);
                await webSocket.SendAsync(new ArraySegment<byte>(confirmationBuffer), WebSocketMessageType.Text, true, CancellationToken.None);

                // Wait for the next message
                result = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.None);
            }

            await webSocket.CloseAsync(result.CloseStatus.Value, result.CloseStatusDescription, CancellationToken.None);
        }
    }
}

2. 然后，創建一個客戶端應用程序，用于連接到WebSocket服務器并發送消息。以下是一個簡單的WebSocket客戶端示例：

using System;
using System.Net.WebSockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace WebSocketClient
{
    class Program
    {
        static async Task Main(string[] args)
        {
            var client = new ClientWebSocket();
            await client.ConnectAsync(new Uri("ws://localhost:8080"), CancellationToken.None);

            // Send a message to the server
            var message = "Hello, WebSocket!";
            var messageBuffer = Encoding.UTF8.GetBytes(message);
            await client.SendAsync(new ArraySegment<byte>(messageBuffer), WebSocketMessageType.Text, true, CancellationToken.None);

            // Wait for the server's confirmation message
            var buffer = new byte[1024 * 4];
            var result = await client.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.None);
            var confirmationMessage = Encoding.UTF8.GetString(buffer, 0, result.Count);
            Console.WriteLine($"Server: {confirmationMessage}");

            await client.CloseAsync(WebSocketCloseStatus.NormalClosure, "Bye", CancellationToken.None);
        }
    }
}

3. 運行WebSocket服務器和客戶端應用程序。當客戶端向服務器發送消息時，服務器將返回一個確認消息。這樣，你就可以優雅地處理WebSocket消息確認了。

注意：這些示例僅用于演示目的。在實際項目中，你可能需要添加錯誤處理、日志記錄等功能。