System.Net.Sockets

Remarks

When establishing a connection, you can use hostnames or IP addresses along with the target port. The Connected property can be used to check the status of the connection.

For asynchronous operations, methods like BeginConnect and EndConnect are available, allowing your application to remain responsive while waiting for network operations to complete.

It's important to dispose of TcpClient instances properly, typically by calling the Close() method or by using a using statement in C#. This ensures that network resources are released promptly.

using System;
using System.Net.Sockets;
using System.Text;

public class SimpleTcpClient
{
    public static void Main(string[] args)
    {
        string serverIP = "127.0.0.1"; // Replace with your server IP
        int serverPort = 13000;     // Replace with your server port

        try
        {
            using (TcpClient client = new TcpClient())
            {
                Console.WriteLine($"Connecting to {serverIP}:{serverPort}...");
                client.Connect(serverIP, serverPort);
                Console.WriteLine("Connected!");

                NetworkStream stream = client.GetStream();
                string messageToSend = "Hello, Server!";
                byte[] data = Encoding.ASCII.GetBytes(messageToSend);

                // Send data
                stream.Write(data, 0, data.Length);
                Console.WriteLine($"Sent: {messageToSend}");

                // Receive data
                byte[] buffer = new byte[1024];
                int bytesRead = stream.Read(buffer, 0, buffer.Length);
                string receivedMessage = Encoding.ASCII.GetString(buffer, 0, bytesRead);
                Console.WriteLine($"Received: {receivedMessage}");
            }
        }
        catch (SocketException e)
        {
            Console.WriteLine($"SocketException: {e.Message}");
        }
        catch (Exception e)
        {
            Console.WriteLine($"Exception: {e.Message}");
        }
        Console.WriteLine("Press any key to exit.");
        Console.ReadKey();
    }
}