no connection could be made because the target machine actively refused it
i need to know what is the problem and how can solve
i try to ping that (this access point take ip through tcp/ ip module )and that replay no problem

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Net.Sockets;
using System.Threading;
using System.Runtime.Remoting.Channels;

namespace simple_tcpclient
    public partial class Form1 : Form
        public Form1()

        private void Form1_Load(object sender, EventArgs e)

            Connect("", "1");

          public static void Connect(String server, String message) 
    // Create a TcpClient. 
    // Note, for this client to work you need to have a TcpServer  
    // connected to the same address as specified by the server, port 
    // combination.
    int port = 1024;
    TcpClient client = new TcpClient(server, port);

    // Translate the passed message into ASCII and store it as a Byte array.
    Byte[] data = System.Text.Encoding.ASCII.GetBytes(message);         

    // Get a client stream for reading and writing. 
   //  Stream stream = client.GetStream();

    NetworkStream stream = client.GetStream();

    // Send the message to the connected TcpServer. 
    stream.Write(data, 0, data.Length);

    System.Windows.Forms.MessageBox.Show("Sent: {0}" + message); ;         

    // Receive the TcpServer.response. 

    // Buffer to store the response bytes.
    data = new Byte[256];

    // String to store the response ASCII representation.
    String responseData = String.Empty;

    // Read the first batch of the TcpServer response bytes.
    Int32 bytes = stream.Read(data, 0, data.Length);
    responseData = System.Text.Encoding.ASCII.GetString(data, 0, bytes);

    System.Windows.Forms.MessageBox.Show("recieved: {0}"+ responseData); 

    // Close everything.
   // stream.Close();         
   // client.Close();         
  catch (ArgumentNullException e) 
      System.Windows.Forms.MessageBox.Show("ArgumentNullException: {0}"+ e);
  catch (SocketException e) 
      System.Windows.Forms.MessageBox.Show("SocketException: {0}"+ e);

  System.Windows.Forms.MessageBox.Show("\n Press Enter to continue...");




Port 1024 is blocked on the target machine (or by the router, or the firewall).

commented: Deep knowledge +14

Can you telnet to that IP and port? Ping is not telling you much here. The earlier post is probably correct.

Also could be that nothing is listening at