按照网上说的unity中使用udp的方法开了线程接受消息，但是接受不到啊？

Question

这是代码，recvfrom一直是阻塞的，确定服务端有回复了，但是就是收不到，这个方法是网上都在转载的unity使用udp的方法。无语了。

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

public class UdpHandler : MonoBehaviour
{
    public static UdpHandler instance;

    /// <summary>
    /// 目标socket
    /// </summary>
    Socket socket;

    /// <summary>
    /// 服务端
    /// </summary>
    EndPoint serverEnd;

    /// <summary>
    /// 服务端端口
    /// </summary>
    IPEndPoint ipEnd;


    /// <summary>
    /// /接收的数据，必须为字节
    /// </summary>
    byte[] recvData = new byte[20];

    /// <summary>
    /// 连接线程
    /// </summary>
    Thread connectThread;

    void Start()
    {
        InitSocket();
        instance = this;
    }

    /// <summary>
    /// 初始化
    /// </summary>
    public void InitSocket()
    {
        //定义连接的服务器ip和端口，可以是本机ip，局域网，互联网
        ipEnd = new IPEndPoint(IPAddress.Parse("192.168.1.105"), 8888);
        //定义套接字类型,在主线程中定义
        socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
        //定义服务端
        IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
        serverEnd = (EndPoint)sender;
        //开启一个线程连接，必须的，否则主线程卡死
        connectThread = new Thread(new ThreadStart(SocketReceive))
        {
            IsBackground = true
        };
        connectThread.Start();
    }

    public void SocketSend(byte[] sendStr)
    {
        //发送给指定服务端
        socket.SendTo(sendStr, sendStr.Length, SocketFlags.None, ipEnd);
    }


    /// <summary>
    /// 服务器接收
    /// </summary>
    void SocketReceive()
    {
        while (true)
        {
            recvData = new byte[1024];
            socket.ReceiveFrom(recvData, ref serverEnd);
            SendMessage("MessageReceiveHandler", recvData);
        }
    }



    /// <summary>
    /// 连接关闭
    /// </summary>
    public void SocketQuit()
    {
        //关闭线程
        if (connectThread != null)
        {
            connectThread.Interrupt();
            connectThread.Abort();
        }
        //最后关闭socket
        if (socket != null)
        {
            socket.Close();
        }
    }



}