Question

我正在研究一个项目，我坚持转移文件...到目前为止它的工作，但在我看来，这不是正确的方法。当我发送文件时，我发送后等待1秒钟。之后，我将停止命令发送到接收器，以便他（接收器）可以关闭文件。每个字节数组发送到字符串，以便我可以检查接收的字节数组是否是停止命令。如果没有sleep命令，stop命令将不会被分开发送（它将与另一个字节数组一起发送）。有没有办法在不关闭套接字的情况下停止文件传输效率更高？发送功能：

public void sendFile()
    {
        string filename = Path.GetFileName(fileLocation);
        byte[] SendingBuffer = null;
        server = client.GetStream();
        int BufferSize = 1024;
        try
        {
            using (FileStream fs = File.Open(fileLocation, FileMode.Open, FileAccess.Read, FileShare.None))
            {
                int NoOfPackets = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(fs.Length) / Convert.ToDouble(BufferSize)));
                int TotalLenght = (int)fs.Length, CurrentPacketLengh = 0;
                mainWindowClass.progressBar2.Dispatcher.Invoke(new Action(()=> mainWindowClass.progressBar2.Maximum = NoOfPackets));
                sendCommand("sndfil"+ filename, "c0mm@nds t0 s3nd %!3");
                for (int i = 0; i < NoOfPackets; i++)
                {
                    //MessageBox.Show(NoOfPackets.ToString() + " " + i);
                    if (TotalLenght > BufferSize)
                    {
                        CurrentPacketLengh = BufferSize;
                        TotalLenght = TotalLenght - CurrentPacketLengh;
                    }
                    else
                        CurrentPacketLengh = TotalLenght;
                    SendingBuffer = new byte[CurrentPacketLengh];
                    fs.Read(SendingBuffer, 0, CurrentPacketLengh);
                    server.Write(SendingBuffer, 0, (int)SendingBuffer.Length);
                    mainWindowClass.progressBar2.Dispatcher.Invoke(new Action(() => mainWindowClass.progressBar2.Value++));
                }
                Thread.Sleep(1000);
                byte[] outStream = System.Text.Encoding.ASCII.GetBytes("stopfile");
                server.Write(outStream, 0, (int)outStream.Length);
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.ToString());
        }
        mainWindowClass.progressBar2.Dispatcher.Invoke(new Action(() => mainWindowClass.progressBar2.Value=0));
    }

接收功能：

 public void receiveFile(string name)
    {
        string fileName = (System.IO.Path.Combine(mainWindowClass.saveFolder, name));
        byte[] RecData = new byte[1024];
        int RecBytes;
        NetworkStream netstream = null;
        try
        {
            int total = 0;
            netstream = client.GetStream();
            FileStream Fs = new FileStream(fileName, FileMode.OpenOrCreate, FileAccess.Write);
            RecBytes = netstream.Read(RecData, 0, RecData.Length);
            char[] chars = new char[RecBytes];
            System.Text.Decoder d = System.Text.Encoding.UTF8.GetDecoder();
            int charLen = d.GetChars(RecData, 0, RecBytes, chars, 0);
            System.String recv = new System.String(chars);
            while (recv!="stopfile")
            {
                total += RecData.Length;
                Fs.Write(RecData, 0, RecBytes);
                RecBytes = netstream.Read(RecData, 0, RecData.Length);
                chars = new char[RecBytes];
                d = System.Text.Encoding.UTF8.GetDecoder();
                charLen = d.GetChars(RecData, 0, RecBytes, chars, 0);
                recv = new System.String(chars);
            }
            Fs.Close();
            mainWindowClass.testLabel.Dispatcher.Invoke(new Action(() => mainWindowClass.testLabel.Content += total.ToString()));
        }
        catch (Exception e)
        {
            MessageBox.Show(e.ToString());
        }
    }

我在Google上搜索了解决方案，但我发现只是关闭了客户端/服务器。

如何正确停止文件传输（c＃，tcp）？

0 个答案: