socket文件传输问题，高手帮忙看看

Question

我用filestream读写文件，用networkstream发送接收文件，为何接收到的文件和原文件大小不一致呢？而且有时会显示接收到的文件已损坏，这会是什么原因造成的呢?

Answer 1

//发送文件
        private void sendBinary(ref Socket socket, string filePath)
        {
            try
            {
                long readcount = fi.Length / 10240;
                long byteremain = fi.Length % 10240;
                byte[] bb = new byte[10240];
                int number;
                stream = new NetworkStream(socket);
                for (long count1 = 1; count1 <= readcount; count1++)
                {
                    number = filestream.Read(bb, 0, bb.Length);
                    stream.Write(bb, 0, bb.Length);
                    stream.Flush();
                    bb = new byte[10240];
                }
                if (byteremain != 0)
                {
                    bb = new byte[byteremain];
                    filestream.Read(bb, 0, bb.Length);
                    stream.Write(bb, 0, bb.Length);
                    stream.Flush();
                }
                filestream.Close();
                stream.Close();
                richTextBox1.AppendText("文件发送完毕" + "\r\n");
                toolStripStatusLabel1.Text = "就绪";
            }
            catch (Exception f)
            {
                MessageBox.Show(f.ToString(), "sendbinary errer");
            }
//接收文件
        private void getBinary(ref Socket socket, string filePath)
        {
            try
            {
                filestream = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.Write);
                byte[] bb = new byte[10240];
                NetworkStream netStream = new NetworkStream(socket);
                long readnumber;
                long currentread = 0;
                long readcount = Convert.ToInt64(str[1]) / 10240;
                long byteremain = Convert.ToInt64(str[1]) % 10240;
                while ((readnumber = netStream.Read(bb, 0, bb.Length)) > 0 && currentread != readcount)
                {
                    currentread++;
                    filestream.Write(bb, 0, bb.Length);
                    filestream.Flush();
                    if (currentread == readcount)
                    {
                        if (byteremain != 0)
                        {
                            bb = new byte[byteremain];
                            netStream.Read(bb, 0, bb.Length);
                            filestream.Write(bb, 0, bb.Length);
                            filestream.Flush();
                        }
                        break;
                    }
                }
                filestream.Close();
                netStream.Close();
                richTextBox1.AppendText("接收文件成功\r\n");
                filesend = false;            }
            catch (Exception f)
            {
                richTextBox1.AppendText("接收文件时错误" + f.ToString() + "\r\n");
            }
        }