unity socket通信

在Unity中实现Socket通信需要使用C#中的Socket类。以下是一个简单的示例代码：

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using UnityEngine;

public class SocketClient : MonoBehaviour
{
    private Socket clientSocket;
    private byte[] receiveBuffer = new byte[1024];

    public void Connect(string ipAddress, int port)
    {
        clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        clientSocket.BeginConnect(new IPEndPoint(IPAddress.Parse(ipAddress), port), ConnectCallback, null);
    }

    private void ConnectCallback(IAsyncResult ar)
    {
        clientSocket.EndConnect(ar);
        Debug.Log("Connected to server.");
        StartReceiving();
    }

    private void StartReceiving()
    {
        clientSocket.BeginReceive(receiveBuffer, 0, receiveBuffer.Length, SocketFlags.None, ReceiveCallback, null);
    }

    private void ReceiveCallback(IAsyncResult ar)
    {
        int receivedBytes = clientSocket.EndReceive(ar);
        if (receivedBytes > 0)
        {
            string receivedData = Encoding.ASCII.GetString(receiveBuffer, 0, receivedBytes);
            Debug.Log("Received data: " + receivedData);
        }
        StartReceiving();
    }

    public void Send(string data)
    {
        byte[] buffer = Encoding.ASCII.GetBytes(data);
        clientSocket.BeginSend(buffer, 0, buffer.Length, SocketFlags.None, SendCallback, null);
    }

    private void SendCallback(IAsyncResult ar)
    {
        clientSocket.EndSend(ar);
    }

    private void OnDestroy()
    {
        clientSocket.Shutdown(SocketShutdown.Both);
        clientSocket.Close();
    }
}

通过调用 Connect 方法来连接服务器，通过 Send 方法来发送数据，通过 ReceiveCallback 方法来接收数据。注意，在 OnDestroy 方法中需要关闭和销毁Socket对象。