c#连接websocket最简单的接受和发送消息方法

在C#中，连接WebSocket并接收和发送消息通常需要借助第三方库，如`Microsoft.AspNet.WebSockets.Client`或更现代的`System.Net.WebSockets`。这里提供一个基本的例子，假设你已经添加了所需的命名空间：

using System.Net.WebSockets;
using System.Text;

// 创建WebSocket连接
private async Task ConnectToWebSocket(string url)
{
    using var client = new ClientWebSocket();
    await client.ConnectAsync(new Uri(url), CancellationToken.None);

    // 发送消息
    string message = "Hello from C#";
    var encodedMessage = Encoding.UTF8.GetBytes(message);
    await client.SendAsync(new ArraySegment<byte>(encodedMessage), WebSocketMessageType.Text, true, CancellationToken.None);

    // 接收消息
    byte[] buffer = new byte[4096];
    MemoryBuffer memory = new MemoryBuffer(buffer);
    await client.ReceiveAsync(memory, CancellationToken.None);
    var receivedMessage = Encoding.UTF8.GetString(buffer, 0, (int)memory.Length);
    Console.WriteLine($"Received: {receivedMessage}");
}

public async void StartWebSocketCommunication()
{
    try
    {
        await ConnectToWebSocket("wss://your-websocket-url");
    }
    catch (Exception ex)
    {
        Console.WriteLine($"Error connecting to WebSocket: {ex.Message}");
    }
}

在这个示例中，`ConnectToWebSocket`方法用于建立连接，并发送消息，`ReceiveAsync`则是用于接收服务器返回的消息。记得替换`"wss://your-websocket-url"`为你实际的WebSocket地址。