MovementsServer.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Net;
using System.Net.Sockets;
using System;

public class MovementsServer : MonoBehaviour
{
    [SerializeField]
    GameObject objectToMove;

    [SerializeField]
    string address = "0.0.0.0";

    [SerializeField]
    int port = 5000;

    [SerializeField]
    int maxPacketsPerFrame = 100;

    Socket socket;


    void Awake()
    {
        socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
        socket.Blocking = false;
        IPEndPoint endPoint = new IPEndPoint(IPAddress.Parse(address), port);
        socket.Bind(endPoint);
        Debug.Log("socket bound");
    }

    void Move(byte[] data, int length)
    {
        if (length != sizeof(float) * 3)
            return;

        float x = BitConverter.ToSingle(data, 0);
        float y = BitConverter.ToSingle(data, 4);
        float z = BitConverter.ToSingle(data, 8);

        objectToMove.transform.position = new Vector3(x, y, z);
    }

    // Update is called once per frame
    void Update()
    {
        byte[] data = new byte[128];
        for (int i = 0; i < maxPacketsPerFrame; i++)
        {
            try
            {
                EndPoint sender = new IPEndPoint(0, 0);
                int rlen = socket.ReceiveFrom(data, data.Length, SocketFlags.None, ref sender);
                Debug.Log("packet received");
                if (rlen > 0)
                {
                    Debug.Log("packet received");
                    Move(data, rlen);
                }
            }
            catch
            {
                break;
            }
        }
    }
}