WCF 提高传输数据性能方法之二 (数据分割)

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在WCF中分批发送和接收数据来实现提高网络传输性能

private byte[] buffer = null;
private int bufferSize = 10000;
private long stream_length;
private Stream stream;

public void GetFile(string path)
{
    stream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
    stream.Position = 0;
    stream_length = stream.Length;
}

public byte[] GetBuffer()
{
    if (buffer != null)
        return buffer;
    else
        return null;
}

public bool ReadBuffer()
{
    bool exist;
    if (stream_length > 0)
    {
        if (stream_length > bufferSize)
        {
            buffer_currect = new byte[bufferSize];
            stream.Read(buffer, 0, bufferSize);
            stream_length -= bufferSize;
        }
        else
        {
            buffer_currect = new byte[stream_length];
            stream.Read(buffer, 0, (int)stream_length);
            stream_length = 0;
        }
        exist = true;
    }
    else
    {
        exist = false;
    }
    return exist;
}

using (DataClient client = new DataClient())
{
      client.GetFile("e:\\docx.rar");
      FileStream stream = new FileStream("d:\\docx.rar", FileMode.CreateNew);
      byte[] buffer;
      while (client.ReadBuffer())
      {
          buffer = client.GetBuffer();
          stream.Write(buffer, 0, buffer.Length);
      }      
      stream.Close();
      client.Close();
}