局域网内【1 to N】的屏幕共享_基于WPF。【不完善】
由于种种原因刷了两个晚上写了这个东西。必须吐槽一下WPF和WinForm的库不一样好麻烦。
BitmapImage、BitmapSource和Bitmap这三个东西弄的我好烦躁。
第一次用异步Socket。写的时候还不是很懂好在Socket部分一次成不用Debug。写完这篇再慢慢回味一下代码。
之前写Shuide的时候服务器总是在连接第二个客户端的时候死掉。当时调了好久没调出来现在来看换成异步应该就阔以了。。。写完这篇就去重写Shuide的后台了。
服务器端的代码。。感觉这次的代码没什么核心技术。就干脆全贴上来了。。。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Interop;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace ScreenServer
{
public partial class MainWindow : Window
{
private Socket serverSocket;
private IPEndPoint serverIEP;
private BitmapImage imgBuffer;
private delegate void SetImageCallBack(BitmapImage bitImage);
SetImageCallBack setImageCallBack;
private delegate void SetTextblockStateCallBack(String Str);
SetTextblockStateCallBack setTextblockStateCallBack;
private int Time;
public MainWindow()
{
InitializeComponent();
setImageCallBack = new SetImageCallBack(SetImage);
setTextblockStateCallBack = new SetTextblockStateCallBack(SetTextblockState);
Time = 50;
}
private void buttonStart_Click(object sender, RoutedEventArgs e)
{
textblockState.Dispatcher.Invoke(setTextblockStateCallBack, "开始监听.........");
buttonStart.IsEnabled = false;
int port = 51888;
if (textboxTime.Text != "" && textboxTime.Text != null)
{
Time = int.Parse(textboxTime.Text);
}
try
{
serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
serverIEP = new IPEndPoint(IPAddress.Any, port);
serverSocket.Bind(serverIEP);
serverSocket.Listen(20);
Thread threadAccept = new Thread(new ThreadStart(Accept));
threadAccept.IsBackground = true;
threadAccept.Start();
}
catch
{
}
}
private void Accept()
{
while(true)
{
Socket client = serverSocket.Accept();
textblockState.Dispatcher.Invoke(setTextblockStateCallBack, "用户 " + ((IPEndPoint)client.RemoteEndPoint).Address.ToString() + " 已登录！");
Thread threadSend = new Thread(new ParameterizedThreadStart(Send));
threadSend.IsBackground = true;
threadSend.Start(client);
}
}
private void Send(Object Obj)
{
try
{
Socket client = (Socket)Obj;
Bitmap bitmap = GetBitmapFromScreen();
Byte[] byteBuffer = new Byte[1048567];
byteBuffer = BitmapToByte(bitmap);
if (client.Connected)
{
client.BeginSend(byteBuffer, 0, byteBuffer.Length, SocketFlags.None, new AsyncCallback(SendCallBack), client);
}
}
catch
{
}
}
private void SendCallBack(IAsyncResult AR)
{
try
{
Thread.Sleep(Time);
Socket client = (Socket)AR.AsyncState;
Bitmap bitmap = GetBitmapFromScreen();
Byte[] byteBuffer = new Byte[1048567];
byteBuffer = BitmapToByte(bitmap);
if (client.Connected)
{
client.BeginSend(byteBuffer, 0, byteBuffer.Length, SocketFlags.None, new AsyncCallback(SendCallBack), client);
}
}
catch
{
textblockState.Dispatcher.Invoke(setTextblockStateCallBack, "1名用户退出登录！");
}
}
private Bitmap GetBitmapFromScreen()
{
System.Drawing.Rectangle rc = SystemInformation.VirtualScreen;
var bitmap = new Bitmap(rc.Width, rc.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
using (Graphics g = Graphics.FromImage(bitmap))
{
g.CopyFromScreen(rc.X, rc.Y, 0, 0, rc.Size, System.Drawing.CopyPixelOperation.SourceCopy);
}
return bitmap;
}
private Byte[] BitmapToByte(Bitmap bitmap)
{
MemoryStream stream = new MemoryStream();
bitmap.Save(stream, System.Drawing.Imaging.ImageFormat.Jpeg);
Byte[] buffer = new Byte[1048567];
stream.Seek(0, SeekOrigin.Begin);
stream.Read(buffer, 0, Convert.ToInt32(stream.Length));
return buffer;
}
private void SetTextblockState(String Str)
{
textblockState.Text = Str;
}
private void buttonRefresh_Click(object sender, RoutedEventArgs e)
{
Time = int.Parse(textboxTime.Text);
}
}
}
客户端的代码。。。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Forms;
using System.Windows.Interop;
using System.Net;
using System.Net.Sockets;
using System.IO;
using System.Drawing;
using System.Threading;
namespace ScreenClient
{
public partial class MainWindow : Window
{
private IPAddress remoteIPA;
private IPEndPoint remoteIEP;
private int port;
private Socket server;
private Byte[] byteBuffer;
private BitmapImage imgBuffer;
private delegate void SetImageCallBack(BitmapImage bitmapImage);
SetImageCallBack setImageCallBack;
public MainWindow()
{
InitializeComponent();
setImageCallBack = new SetImageCallBack(SetImage);
}
private void Go_Click(object sender, RoutedEventArgs e)
{
remoteIPA = IPAddress.Parse(textboxIP.Text);
port = 51888;
remoteIEP = new IPEndPoint(remoteIPA, port);
byteBuffer = new Byte[1048576];
imgBuffer = new BitmapImage();
server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
server.Connect(remoteIEP);
if (server.Connected)
{
Thread threadReceive = new Thread(new ThreadStart(Receive));
threadReceive.IsBackground = true;
threadReceive.Start();
}
}
catch
{
}
}
private void Receive()
{
while (true)
{
try
{
server.Receive(byteBuffer);
try
{
imgBuffer = new BitmapImage();
imgBuffer.BeginInit();
imgBuffer.StreamSource = new MemoryStream(byteBuffer);
imgBuffer.EndInit();
imgBuffer.Freeze();
}
catch
{
imgBuffer = null;
}
}
catch
{
System.Windows.MessageBox.Show("与服务器断开连接！");
this.Close();
}
imageScreen.Dispatcher.BeginInvoke(setImageCallBack, imgBuffer);
}
}
private void SetImage(BitmapImage bitmapImage)
{
imageScreen.Source = bitmapImage;
}
}
}
大概实现方法就是截图存成Bitmap。然后转成Byte。传到Client。再转回BitmapImage。然后贴到客户端的Image控件上。。。
不得不吐槽。BitmapImage和Bitmap完全就是一样的东西还非要在不同的库里面起不同的名字。好烦躁。。。
目前的问题：
网速硬伤。使用Wifi的话延迟太高导致客户端各种无响应。考虑过室友提出的缓冲池。但只是能解决无响应的问题。画面还是会卡顿。求不特别依赖网速的其他实现方法。
适应屏幕是手动调大小的。。心好累。
没写注释。感觉看官老爷们看代码会很忧桑。。。