unity WebSocket加密解密

Unity中的WebSocket加密解密可以通过使用SSL/TLS协议来实现。具体来说，可以使用Unity的`SslStream`类来对WebSocket通信进行加密和解密。

在使用`SslStream`之前，需要先创建一个`TcpClient`对象来与WebSocket服务器建立连接。然后，可以使用`SslStream`的构造函数来创建一个加密的流对象。最后，可以使用`SslStream`的`Read()`和`Write()`方法来对WebSocket通信进行加密和解密。

以下是一个示例代码：

using System;
using System.Net.Sockets;
using System.Security.Authentication;
using System.Security.Cryptography.X509Certificates;
using System.Threading.Tasks;
using UnityEngine;

public class WebSocketClient : MonoBehaviour
{
    private TcpClient tcpClient;
    private SslStream sslStream;
    private byte[] receiveBuffer = new byte[1024];

    private async Task Connect(string serverIp, int serverPort)
    {
        tcpClient = new TcpClient();
        await tcpClient.ConnectAsync(serverIp, serverPort);

        // Create SslStream object with client certificate validation
        sslStream = new SslStream(tcpClient.GetStream(), false, new RemoteCertificateValidationCallback(ValidateServerCertificate), null);

        // Authenticate server and client with SSL/TLS connection
        try
        {
            await sslStream.AuthenticateAsClientAsync(serverIp);
        }
        catch (AuthenticationException e)
        {
            Debug.LogError($"SSL/TLS authentication failed: {e.Message}");
            tcpClient.Close();
            return;
        }

        // Start listening for incoming WebSocket messages
        await Receive();
    }

    private async Task Receive()
    {
        // Read incoming data from WebSocket server
        int bytesReceived = await sslStream.ReadAsync(receiveBuffer, 0, receiveBuffer.Length);

        // Decrypt received data

        // Process decrypted data

        // Continue listening for incoming WebSocket messages
        await Receive();
    }

    private void Send(string message)
    {
        // Encrypt outgoing data

        // Send encrypted data to WebSocket server
        byte[] sendBuffer = System.Text.Encoding.UTF8.GetBytes(message);
        sslStream.Write(sendBuffer, 0, sendBuffer.Length);
    }

    private bool ValidateServerCertificate(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
    {
        // Perform certificate validation if needed

        return true;
    }
}

请注意，以上代码仅提供了WebSocket加密解密的基本思路，具体实现可能因应用场景而有所不同。还需要根据实际情况进行一些改进，比如对接收到的数据进行解析和处理，对发送的数据进行封装和编码等。