Gaze.cs

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

public class Gaze : MonoBehaviour
{
    Thread mThread;

    public string connectionIP = "127.0.0.1";
    public int connectionPort = 25001;

    IPAddress localAdd;
    TcpListener listener;
    TcpClient client;
    Vector3 receivedPos = Vector3.zero;

    bool running;

    private void run_cmd(string cmd, string args)
    {
        ProcessStartInfo start = new ProcessStartInfo();

        start.FileName = "cmd";//cmd is full path to python.exe
        start.Arguments = "args";//args is path to .py file and any cmd line args
        
        start.UseShellExecute = true;
        start.RedirectStandardOutput = false;

        using(Process process = Process.Start(start))
        {
            using(System.IO.StreamReader reader = process.StandardOutput)
                {
                    string result = reader.ReadToEnd();
                    print(result);
                 }
        }
    }

    private void Update()
    {
        transform.position = receivedPos; //assigning receivedPos in SendAndReceiveData()
    }

    private void Start()
    {
        ThreadStart ts = new ThreadStart(GetInfo);
        mThread = new Thread(ts);
        mThread.Start();
    }

    void GetInfo()
    {
        localAdd = IPAddress.Parse(connectionIP);
        listener = new TcpListener(IPAddress.Any, connectionPort);
        listener.Start();

        client = listener.AcceptTcpClient();

        running = true;
        while (running)
        {
            SendAndReceiveData();
        }
        listener.Stop();
    }

    void SendAndReceiveData()
    {
        NetworkStream nwStream = client.GetStream();
        byte[] buffer = new byte[client.ReceiveBufferSize];

        //---receiving Data from the Host----
        int bytesRead = nwStream.Read(buffer, 0, client.ReceiveBufferSize); //Getting data in Bytes from Python
        string dataReceived = Encoding.UTF8.GetString(buffer, 0, bytesRead); //Converting byte data to string

        if (dataReceived != null)
        {
            //---Using received data---
            receivedPos = StringToVector3(dataReceived); //<-- assigning receivedPos value from Python
            print(receivedPos);
        }
    }

    public static Vector3 StringToVector3(string sVector)
    {
        // Remove the parentheses
        if (sVector.StartsWith("(") && sVector.EndsWith(")"))
        {
            sVector = sVector.Substring(1, sVector.Length - 2);
        }

        // split the items
        string[] sArray = sVector.Split(',');

        // store as a Vector3
        Vector3 result = new Vector3(
            float.Parse(sArray[0]),
            float.Parse(sArray[1]),
            float.Parse(sArray[2]));

        return result;
    }
    /*
    public static string GetLocalIPAddress()
    {
        var host = Dns.GetHostEntry(Dns.GetHostName());
        foreach (var ip in host.AddressList)
        {
            if (ip.AddressFamily == AddressFamily.InterNetwork)
            {
                return ip.ToString();
            }
        }
        throw new System.Exception("No network adapters with an IPv4 address in the system!");
    }
    */
}