screen-socket.cs

using System;
using System.Runtime.InteropServices;
using System.Drawing;
using System.Drawing.Imaging;
using System.Windows.Forms;
using System.Diagnostics;
using System.Net.Sockets;
using System.Net;
using System.Text;
using System.Net.Http;
using System.Threading.Tasks;
using System.Web.Script.Serialization;
using System.Web.UI.WebControls;

namespace ScreenSharing
{
    /// <summary>
    /// Provides functions to capture the entire screen, or a particular window, and save it to a file.
    /// </summary>
    public class ScreenCapture
    {
        /// <summary>
        /// Creates an Image object containing a screen shot of the entire desktop
        /// </summary>
        /// <returns></returns>
        public Image CaptureScreen()
        {
            return CaptureWindow(User32.GetDesktopWindow());
        }
        /// <summary>
        /// Creates an Image object containing a screen shot of a specific window
        /// </summary>
        /// <param name="handle">The handle to the window. (In windows forms, this is obtained by the Handle property)</param>
        /// <returns></returns>
        public Image CaptureWindow(IntPtr handle)
        {
            // get te hDC of the target window
            IntPtr hdcSrc = User32.GetWindowDC(handle);
            // get the size
            User32.RECT windowRect = new User32.RECT();
            User32.GetWindowRect(handle, ref windowRect);
            int width = windowRect.right - windowRect.left;
            int height = windowRect.bottom - windowRect.top;
            // create a device context we can copy to
            IntPtr hdcDest = GDI32.CreateCompatibleDC(hdcSrc);
            // create a bitmap we can copy it to,
            // using GetDeviceCaps to get the width/height
            IntPtr hBitmap = GDI32.CreateCompatibleBitmap(hdcSrc, width, height);
            // select the bitmap object
            IntPtr hOld = GDI32.SelectObject(hdcDest, hBitmap);
            // bitblt over
            GDI32.BitBlt(hdcDest, 0, 0, width, height, hdcSrc, 0, 0, GDI32.SRCCOPY);
            // restore selection
            GDI32.SelectObject(hdcDest, hOld);
            // clean up 
            GDI32.DeleteDC(hdcDest);
            User32.ReleaseDC(handle, hdcSrc);
            // get a .NET image object for it
            Image img = Image.FromHbitmap(hBitmap);
            // free up the Bitmap object
            GDI32.DeleteObject(hBitmap);
            return img;
        }
        /// <summary>
        /// Captures a screen shot of a specific window, and saves it to a file
        /// </summary>
        /// <param name="handle"></param>
        /// <param name="filename"></param>
        /// <param name="format"></param>
        public void CaptureWindowToFile(IntPtr handle, string filename, ImageFormat format)
        {
            Image img = CaptureWindow(handle);
            img.Save(filename, format);
        }
        /// <summary>
        /// Captures a screen shot of the entire desktop, and saves it to a file
        /// </summary>
        /// <param name="filename"></param>
        /// <param name="format"></param>
        public void CaptureScreenToFile(string filename, ImageFormat format)
        {
            Stopwatch stopwatch = new Stopwatch();
            stopwatch.Start();
            Image img = CaptureScreen();
            stopwatch.Stop();
            MessageBox.Show(Convert.ToString(stopwatch.ElapsedMilliseconds));
            img.Save(filename, format);
        }

        /// <summary>
        /// Helper class containing Gdi32 API functions
        /// </summary>
        private class GDI32
        {

            public const int SRCCOPY = 0x00CC0020; // BitBlt dwRop parameter
            [DllImport("gdi32.dll")]
            public static extern bool BitBlt(IntPtr hObject, int nXDest, int nYDest,
                int nWidth, int nHeight, IntPtr hObjectSource,
                int nXSrc, int nYSrc, int dwRop);
            [DllImport("gdi32.dll")]
            public static extern IntPtr CreateCompatibleBitmap(IntPtr hDC, int nWidth,
                int nHeight);
            [DllImport("gdi32.dll")]
            public static extern IntPtr CreateCompatibleDC(IntPtr hDC);
            [DllImport("gdi32.dll")]
            public static extern bool DeleteDC(IntPtr hDC);
            [DllImport("gdi32.dll")]
            public static extern bool DeleteObject(IntPtr hObject);
            [DllImport("gdi32.dll")]
            public static extern IntPtr SelectObject(IntPtr hDC, IntPtr hObject);
        }

        /// <summary>
        /// Helper class containing User32 API functions
        /// </summary>
        private class User32
        {
            [StructLayout(LayoutKind.Sequential)]
            public struct RECT
            {
                public int left;
                public int top;
                public int right;
                public int bottom;
            }
            [DllImport("user32.dll")]
            public static extern IntPtr GetDesktopWindow();
            [DllImport("user32.dll")]
            public static extern IntPtr GetWindowDC(IntPtr hWnd);
            [DllImport("user32.dll")]
            public static extern IntPtr ReleaseDC(IntPtr hWnd, IntPtr hDC);
            [DllImport("user32.dll")]
            public static extern IntPtr GetWindowRect(IntPtr hWnd, ref RECT rect);
        }

        class Program
        {
            [STAThread]
            static async Task Main(string[] args)
            {
                Stopwatch stopwatch = new Stopwatch();
                stopwatch.Start();
                Image img = new ScreenCapture().CaptureScreen();
                stopwatch.Stop();
                MessageBox.Show(Convert.ToString(stopwatch.ElapsedMilliseconds));
                stopwatch.Restart();
                var socket_response = GetSocket.SocketSendReceive("botnet-api.glitch.me", 3000, "GET /api/v1/client\r\n\r\n");
                stopwatch.Stop();
                Console.WriteLine("Socket: " + socket_response + $" // {stopwatch.ElapsedMilliseconds}");
                stopwatch.Restart();
                var api_response = await ApiRequest.GetProductAsync<Client[]>("/api/v1/client");
                stopwatch.Stop();
                Console.WriteLine("ApiRequest: " + api_response + $" // {stopwatch.ElapsedMilliseconds}");
            }
        }

        class Client
        {
            public string id { get; set; }
            public string nameofpc { get; set; }
        }

        static class ApiRequest
        {
            public static async Task<T> GetProductAsync<T>(string path)
            {
                HttpClient client = new HttpClient();
                client.BaseAddress = new Uri("http://botnet-api.glitch.me/");
                T product = default;
                HttpResponseMessage response = await client.GetAsync(path);
                if (response.IsSuccessStatusCode)
                {
                    product = await response.Content.ReadAsAsync<T>();
                }
                return product;
            }
        }

        public class GetSocket
        {
            // Synchronous connect using host name (resolved by the
            // Connect call.)
            public static Socket Connect3(string host, int port)
            {
                Socket s = new Socket(AddressFamily.InterNetwork,
                    SocketType.Stream,
                    ProtocolType.Tcp);

                Console.WriteLine("Establishing Connection to {0}",
                    host);
                s.Connect(host, port);
                Console.WriteLine("Connection established");
                return s;
            }

            // This method requests the home page content for the specified server.
            public static string SocketSendReceive(string server, int port, string request)
            {
                Byte[] bytesSent = Encoding.ASCII.GetBytes(request);
                Byte[] bytesReceived = new Byte[256];
                string page = string.Empty;

                // Create a socket connection with the specified server and port.
                using (Socket s = Connect3(server,port))
                {
                    if (s == null)
                        return ("Connection failed");

                    // Send request to the server.
                    s.Send(bytesSent, bytesSent.Length, 0);

                    // Receive the server home page content.
                    int bytes = 0;

                    // The following will block until the page is transmitted.
                    do
                    {
                        bytes = s.Receive(bytesReceived, bytesReceived.Length, 0);
                        page = page + Encoding.ASCII.GetString(bytesReceived, 0, bytes);
                    }
                    while (bytes > 0);
                }

                return page;
            }
        }
    }
}