using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Net;
using System.Threading;

namespace SocketClient
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btn_chk_Click(object sender, EventArgs e)
        {
            btn_chk.Enabled = false;
            srvr();

        }
        public void srvr()
        {
            try
            {
                TcpClient clientSocket = new TcpClient();
                clientSocket.Connect("127.0.0.1", 8888);
                NetworkStream ns = clientSocket.GetStream();
                Thread rcvr = new Thread(() => rcv(ns, clientSocket));
                rcvr.Start();
            }
            catch (Exception ex)
            {
                MessageBox.Show(Convert.ToString(ex));
                btn_chk.Enabled = true;
            }
        }
        private volatile string ver;
        bool on = false;
        public void rcv(NetworkStream ns, TcpClient clientSocket)
        {
            on = false;
		//sending some random string so the server will respond
           Byte[] sendBytes = Encoding.ASCII.GetBytes("bla");
            ns.Write(sendBytes, 0, sendBytes.Length);
		//receiving server response
            byte[] bytes = new byte[clientSocket.ReceiveBufferSize];
            int bytesread = clientSocket.ReceiveBufferSize;
            ns.Read(bytes, 0, bytesread);
		//received response, now encoding it to a string from a byte array
            string returndata =Encoding.ASCII.GetString(bytes);
            ver = Convert.ToString(returndata);
            //MessageBox.Show("ver\n" + ver);
            //MessageBox.Show("return\n" + returndata);
            on = true;
            if (ver== "2.0.1")
            {
                MessageBox.Show("iahsd");
            }
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            textBox1.Text = ver;
            lbl_ver.Text = ver;
            if (on == true)
            {
                btn_chk.Enabled = true;
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
	 //this is for testing, when the timer is on (intervall 100) i cant copy from the textbox
            timer1.Enabled = false;
        }

        private void button2_Click(object sender, EventArgs e)
        {
	//shows the string ver which contains the received string from the server
            MessageBox.Show(ver);
        }
    }
}