Chunked Stream响应不正确

Question

对于这样一个模糊的标题，我真的不知道该怎么称呼这个问题。基本上当我得到一个按照Transfer-Encoding告知的流分块时，我会执行以下代码：

private IEnumerable<byte[]> ReceiveMessageBodyChunked() {
    readChunk:
    #region Read a line from the Stream which should be a Block Length (Chunk Body Length)
    string blockLength = _receiverHelper.ReadLine();
    #endregion
    #region If the end of the block is reached, re-read from the stream
    if (blockLength == Http.NewLine) {
        goto readChunk;
    }
    #endregion
    #region Trim it so it should end up with JUST the number
    blockLength = blockLength.Trim(' ', '
', '
');
    #endregion
    #region If the end of the message body is reached
    if (blockLength == string.Empty) {
        yield break;
    }
    #endregion
    int blockLengthInt = 0;
    #region Convert the Block Length String to an Int32 base16 (hex)
    try {
        blockLengthInt = Convert.ToInt32(blockLength, 16);
    } catch (Exception ex) {
        if (ex is FormatException || ex is OverflowException) {
            throw new Exception(string.Format(ExceptionValues.HttpException_WrongChunkedBlockLength, blockLength), ex);
        }
        throw;
    }
    #endregion
    // If the end of the message body is reached.
    if (blockLengthInt == 0) {
        yield break;
    }
    byte[] buffer = new byte[blockLengthInt];
    int totalBytesRead = 0;
    while (totalBytesRead != blockLengthInt) {
        int length = blockLengthInt - totalBytesRead;
        int bytesRead = _receiverHelper.HasData ? _receiverHelper.Read(buffer, 0, length) : _request.ClientStream.Read(buffer, 0, length);
        if (bytesRead == 0) {
            WaitData();
            continue;
        }
        totalBytesRead += bytesRead;
        System.Windows.Forms.MessageBox.Show("Chunk Length: " + blockLengthInt + "
Bytes Read/Total:" + bytesRead + "/" + totalBytesRead + "

" + Encoding.ASCII.GetString(buffer));
        yield return buffer;
    }
    goto readChunk;
}

这样做是从流中读取1行数据，这应该是Chunk的长度，在这里和那里进行一些检查，但最终将其转换为Int32 Radix16整数。

从那里它实际上创建了一个int32的字节缓冲区作为其长度大小。

然后它继续从流中读取，直到它读取与我们转换的Int32相同的量。

然而，无论出于何种原因，它的效果都非常出色，它在最后一次阅读中的反应不正确。

它将读取精确的字节数，因为块长度完全正常，并且我期望的所有数据都被读取。但它还是再次读取另一小部分数据，这些数据最后已被读取，导致让我们说从<!DOCTYPE html>到</html> ASWELL的所有数据都是来自某些地方的数据，如<form> e.t.c

这是发生的事情的一个例子：

如您所见，突出显示的红色文本不应该从读取中返回！它应该在</html>结束。为什么Chunk的长度对我来说，我怎样才能找到合适的尺寸来阅读？