System.Net.ConnectStream.ReadCRLF C# (CSharp) Method

        private int ReadCRLF(byte[] buffer) {
            GlobalLog.Enter("ConnectStream#" + ValidationHelper.HashString(this) + "::ReadCRLF");
            int offset = 0;
            int size = NclConstants.CRLF.Length;

            int BytesRead = FillFromBufferedData(buffer, ref offset, ref size);

            if (BytesRead >= 0 && BytesRead != NclConstants.CRLF.Length)
            {
                do {
                    int bytesTransferred = m_Connection.Read(buffer, offset, size);

                    if (bytesTransferred <= 0) {
                        GlobalLog.Leave("ConnectStream#" + ValidationHelper.HashString(this) + "::ReadCRLF", bytesTransferred);
                        throw new IOException(SR.GetString(SR.net_io_readfailure, SR.GetString(SR.net_io_connectionclosed)));
                    }
                    else {
                        size   -= bytesTransferred;
                        offset += bytesTransferred;
                    }
                } while ( size > 0 );
            }

            GlobalLog.Leave("ConnectStream#" + ValidationHelper.HashString(this) + "::ReadCRLF", BytesRead);
            return BytesRead;
        }