因为需要用到unity和其他的程序交互，其他程序可以提供Udp消息，因此找了合适的相互连接方法。这里直接上代码。

工具类：

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using UnityEngine;
using UnityEngine.Video;

public class UdpManager
{
    public static string m_receivedMessage;
    static IPEndPoint m_IPEndPoint;
    static UdpClient m_udpClient;


    public static void InitializeUdpClient()
    {
        m_IPEndPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8080);
        m_udpClient = new UdpClient(m_IPEndPoint);
        UdpModel s = new UdpModel(m_udpClient, m_IPEndPoint);
        m_udpClient.BeginReceive(EndReceive, s);
        Debug.Log("服务器启动");

    }

    //结束得到的信息
    private static void EndReceive(IAsyncResult ar)
    {
        try
        {
            UdpModel m_UdpModel = ar.AsyncState as UdpModel;
            if (m_UdpModel != null)
            {
                UdpClient udpClient = m_UdpModel.m_udpclient;
                IPEndPoint ip = m_UdpModel.m_ip;
                Byte[] receiveBytes = udpClient.EndReceive(ar, ref ip);
                string msg = Encoding.UTF8.GetString(receiveBytes);
                m_receivedMessage = msg;
                udpClient.BeginReceive(EndReceive, m_UdpModel); //开始获取

            }
        }
        catch (Exception ex)
        {
            //处理异常
        }
    }

    //udp模型
    private class UdpModel
    {
        public UdpClient m_udpclient = null;
        public IPEndPoint m_ip;
        public UdpModel(UdpClient udpclient, IPEndPoint ip)
        {
            this.m_udpclient = udpclient;
            this.m_ip = ip;
        }
    }

    //关闭
    public static void Close()
    {
        if (m_udpClient != null)
        {
            m_udpClient.Close();
            m_udpClient = null;
        }
    }

    /// <summary>
    /// 发送数据
    /// </summary>
    /// <param name="obj"></param>
    public static void SendMessage(string message)
    {
        UdpClient myUdpClient = new UdpClient();
        IPEndPoint endpoint;
        //当前服务器ip和端口号
        myUdpClient = new UdpClient(new IPEndPoint(IPAddress.Any, 8800));

        //要发送给的地址和端口号，255.255.255.255表示在这个局域网的所有ip
        endpoint = new IPEndPoint(IPAddress.Parse("192.168.31.174"), 1180);

        byte[] bytes = Encoding.UTF8.GetBytes(message);
        try
        {
            myUdpClient.Send(bytes, bytes.Length, endpoint);
            myUdpClient.Close();
        }
        catch (Exception err)
        {
            Console.Write(err.Message, "发送失败");
        }
        finally
        {
            myUdpClient.Close();
        }
    }
}

需要挂载运行的脚本：

using System.Collections.Generic;
using UnityEngine.UI;
using UnityEngine;
using UnityEngine.Video;

/// <summary>
/// 服务接收生成
/// </summary>
public class ServerControl : MonoBehaviour
{
    
   
 
    void Start()
    {

        UdpManager.InitializeUdpClient();

        //part1Root.SetActive(true);
        //part2Root.SetActive(false);
    }
    void Update()
    {

        if (UdpManager.m_receivedMessage != null)
        {
            string[] array = UdpManager.m_receivedMessage.Split(',');
            Debug.Log(UdpManager.m_receivedMessage);
          
            UdpManager.m_receivedMessage = null;
        
        }
      


    }

    private void OnDestroy()
    {
        UdpManager.Close();
    }
}

使用方法很简单，把ServerControl脚本挂载在一个物体上，直接运行即可，接受信息的方法和发送的方法都在两个脚本里。