[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 hostname = "dirask.com";
        int port = 80;

        using (TcpClient socket = new TcpClient(hostname, port))
        using (NetworkStream stream = socket.GetStream())
        using (TextWriter writer = new StreamWriter(stream, Encoding.UTF8))
        using (TextReader reader = new StreamReader(stream, Encoding.UTF8))
        {
            // request:

            string requestText = "GET / HTTP/1.1\n\r" +
                                 "Host: " + hostname + "\n\r" +
                                 "";

            writer.Write(requestText);
            writer.Flush();

            // response:

            string responseText = "";

            while (true)
            {
                String? line = reader.ReadLine();

                if (line == null)
                    break;

                responseText += line + "\n";
            }

            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>
        }
    }
}