readn(this.in, buffer, Smb2Constants.SMB2_HEADER_LENGTH, rl - Smb2Constants.SMB2_HEADER_LENGTH);

                len = cur.decode(buffer, 0, true);
                if ( len > rl ) {
                    throw new IOException(String.format("WHAT? ( read %d decoded %d ): %s", rl, len, cur));
                }
                else if ( nextCommand != 0 && len > nextCommand ) {