Some scripy cody thing to check open / forwarded ports.

PortCheckerClientThingy.cs

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

namespace PortChecker
{
    public partial class MainWindw : Form
    {
        public System.Net.IPAddress ServerAddress = System.Net.IPAddress.Parse("192.168.0.5");

        public MainWindw()
        {
            InitializeComponent();
        }

        private void GoCheck_Click(object sender, EventArgs e)
        {
            if (int.Parse(PortNumber.Text) > 65535)
            {
                Result.Text = "Invalid Port";
            }
            else
            {
                /*
                 * Do Check the port
                 */

                if (TCPPort.Checked)
                {
                    // TCP Port, Create a TCP socket, and form a connection to the Listen server
                    Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                    IPEndPoint remoteEP = new System.Net.IPEndPoint(ServerAddress, int.Parse(PortNumber.Text));

                    // Try and establish a connection to the remote system
                    try
                    {
                        sock.Connect(remoteEP);
                        Result.Text = "Connected!";
                    }
                    catch (SocketException Exep)
                    {
                        MessageBox.Show(Exep.Message);
                    }

                    // Send some data
                    try
                    {
                        String szData = "Test";
                        byte[] byData = System.Text.Encoding.ASCII.GetBytes(szData);
                        sock.Send(byData);
                        Result.Text = "Data Sent";
                    }
                    catch (SocketException Exep)
                    {
                        MessageBox.Show("Error Sending Data\n" + Exep.Message);
                    }

                    try
                    {
                        // Recieve some data.
                        Result.Text = "Listening";
                        byte[] buffer = new byte[1024];
                        int iRx = sock.Receive(buffer);

                        MessageBox.Show(buffer.ToString());
                    }
                    catch (SocketException Exep)
                    {
                        MessageBox.Show(Exep.Message);
                    }


                }
                else if (UDPPort.Checked)
                {
                    // UDP Port, Create a UDP socket, and then do the UDP thingy.
                    Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
                }
            }
        }

    }
}