通过WebService ASMX传输字节阵列

Question

我正在研究用于在服务器之间传输ZIP文件的旧网络服务，直到最近，文件大小变大，超过700 MB。这会导致例外，因为我的控制台应用程序（客户端）无法一次接收大型字节阵列，因此我试图通过块发送和接收字节数组，但是zip文件最终被损坏，无法解压缩。 ，下面是我尝试的，我对WebService有点不熟悉，因此，如果你们可以指出我的错误，或者也许我将我指向更好的解决方案：

Console App（Original）：

 string saveto = MdlMain.FileName;
                object file = (object)serviceSoapClient.GetFile( saveto);
                FileStream fileStream = new FileStream(GlobalVariable.FileDirectory + str2, FileMode.Create);
                fileStream.Write((byte[])file, 0, Conversions.ToInteger(NewLateBinding.LateGet(file, (Type)null, "Length", new object[0], (string[])null, (Type[])null, (bool[])null)));
                fileStream.Flush();
                fileStream.Close();

WebService（Original）：

        public byte[] GetFile( string strFilename)
    {
        FileStream fileStream = new FileStream(this.DJDownloadPath + strFilename, FileMode.Open, FileAccess.Read);
        long length = fileStream.Length;
        byte[] array = new byte[checked((int)(length + 1L - 1L) + 1)];

        fileStream.Read(array, 0, checked((int)length));
        fileStream.Close();
        HttpContext.Current.Response.BufferOutput = false;
        HttpContext.Current.Response.Buffer = false;

        return array;

    }

Console App（Modified ） ）：

 FileStream fileStream= new FileStream(@"D:\example.zip", FileMode.Create);

                    int totalchunkNo = targetfilesize / 2000000;
                    int remainder = targetfilesize % 2000000;

                    if (remainder > 0 && remainder != totalchunkNo)
                        totalchunkNo++;

                    for (int i = 1; i <= totalchunkNo; i++)
                    {

                        byte[] bytetobeWritten = (byte[])serviceSoapClient.GetFileByChunk(MdlMain.FileName, i);

                        fileStream.Write(bytetobeWritten, 0, Conversions.ToInteger(NewLateBinding.LateGet(bytetobeWritten, (Type)null, "Length", new object[0], (string[])null, (Type[])null, (bool[])null)));
                       
                    }

                    fileStream.Flush();
                    fileStream.Close();

WebService（修改）：

[WebMethod]
    public byte[] GetFileByChunk(string strFilename, int requestChunkNo)
    {
        FileStream fileStream = new FileStream(this.DJDownloadPath + strFilename, FileMode.Open, FileAccess.Read);

        long length = fileStream.Length;
        byte[] array = new byte[length];
        int incomingOffset = 0;
        int chunkSize = 2000000;

        fileStream.Read(array, 0, (int)length);
        fileStream.Close();

        int currentchunkNo = 0;
        byte[] outboundBuffer = new byte[chunkSize];

        while (incomingOffset < array.Length)
        {
            int lengthh = Math.Min(outboundBuffer.Length, array.Length - incomingOffset);

            Buffer.BlockCopy(array, incomingOffset,
                             outboundBuffer, 0,
                             lengthh);

            incomingOffset += lengthh;

            currentchunkNo++;

            if (currentchunkNo == requestChunkNo)
            {
                return outboundBuffer;
            }
        }

        return null;
    }