[Edit]

C# HTTP request example with client socket

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

public class Program
{
    public static void Main()
    {
        string host = "dirask.com";
        int    port = 80;

        IPHostEntry entry = Dns.GetHostEntry(host); // getting avaialble IP addresses from DNS using host name

        Socket socket = new Socket(SocketType.Stream, ProtocolType.Tcp);

        try
        {
            // connecting:

            socket.Connect(entry.AddressList, port);

            // request:

            string requestText = "GET / HTTP/1.1\n\r" +
                                 "Host: " + host + "\n\r" +
                                 "";
            byte[] requestBytes = Encoding.UTF8.GetBytes(requestText);

            socket.Send(requestBytes);

            // response:

            byte[] responseBuffer = new byte[1024];
            int responseSize = socket.Receive(responseBuffer);

            string responseText = Encoding.UTF8.GetString(responseBuffer, 0, responseSize);

            Console.WriteLine(responseText); // HTTP/1.1 400 Bad Request
                                             // Server: cloudflare
                                             // Date: Thu, 24 Mar 2022 20:40:49 GMT
                                             // Content-Type: text/html
                                             // Content-Length: 155
                                             // Connection: close
                                             // CF-RAY: -
                                             // 
                                             // <html>
                                             // <head><title>400 Bad Request</title></head>
                                             // <body>
                                             // <center><h1>400 Bad Request</h1></center>
                                             // <hr><center>cloudflare</center>
                                             // </body>
                                             // </html>
        }
        catch (Exception ex)
        {
            Console.Error.WriteLine(ex.ToString());
        }
        finally
        {
            // cleaning:
          
            socket.Dispose();

            // or:  socket.Shutdown(SocketShutdown.Both);  with  socket.Close();
        }
    }
}