如何让服务器从多个客户端套接字接收图片

Question

所以这是我从客户端接收图片的服务器代码

public void Hey()
{
    Functions.ServerSend("Picture");
    if (Functions.serverrecievetext().CompareTo("Okay") == 0)
    {
        sck = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

        LingerOption lo = new LingerOption(false, 0);
        sck.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Linger, lo);

        try
        {
            sck.Bind(Login.ip_ep);
            sck.Listen(100);
            Socket accepted = sck.Accept();
            byte[] buff = new byte[300000];

            MemoryStream m = new MemoryStream();

            read = accepted.Receive(buff, buff.Length, 0);
            m.Write(buff, 0, read);
            while (read > 0)
            {
                read = accepted.Receive(buff, buff.Length,0);
                if (read != 0)
                    m.Write(buff, 0, read);
            }

            Bitmap p = new Bitmap(m, false);
            m.Dispose();
            pictureBox1.Image = p;
            pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
            accepted.Close();

            sck.Dispose();
            sck.Close();
        }
        catch (Exception f)
        {

        }
    }
}



private void timer1_Tick(object sender, EventArgs e)
{
    Thread t = new Thread(Hey);
    t.Start();
}

它适用于一个客户，这里是客户代码：

private void timer1_Tick(object sender, EventArgs e)
{
    p = Functions.ClientRecieve();
    if (p.CompareTo("Picture") == 0)
    {
        Functions.ClientSendText("Okay");
        Bitmap b = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);
        Graphics g = Graphics.FromImage(b as Image);
        g.CopyFromScreen(0, 0, 0, 0, b.Size);
        pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
        pictureBox1.Image = b;
        sck = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

        try
        {
            sck.Connect(Login.ip_ep);

            MemoryStream s = new MemoryStream();
            pictureBox1.Image.Save(s, System.Drawing.Imaging.ImageFormat.Png);

            sck.Send(s.ToArray());
            sck.Disconnect(true);
            sck.Dispose();
            sck.Close();
        }
        catch (Exception f)
        {

        }
    }
    else
    {
        Functions.ClientSendText("Okay");
        timer1.Stop();
        this.Close();
    }
}

我希望服务器能够同时接收来自不同客户端的不同图片（如果可能的话） 请注意，当我单击按钮时，我会打开一个新服务器，它也会给出启动新客户端的命令 所以当我点击按钮两次时，我想要两个服务器表单，每个表单都得到不同的图片 提前谢谢^^

Answer 1

您希望同时接收来自多个客户端的不同图片。然后你需要学习使用线程。接收服务器将侦听客户端并为每个客户端启动一个新线程，其中将编写接收图像的代码。像这样，您可以同时并行接收或发送数据。

This 将帮助您开始使用 c# 中的线程