[inline TODO] RPC utf8 conversion failure should throw error 32701 in /rpc/TXP_RPCServer.php #1051

            switch ($encoding) {
                case 'utf-8':
                    $data = $HTTP_RAW_POST_DATA;
                    break;
                case 'iso-8859-1':
// TODO: if utf8 conversion fails, throw: 32701 ---> parse error. unsupported encoding?
// see: http://xmlrpc-epi.sourceforge.net/specs/rfc.fault_codes.php
                    // This will fail on parser if utf8_encode is unavailiable.
                    $data = (function_exists('utf8_encode') && is_callable('utf8_encode'))
                        ? utf8_encode($HTTP_RAW_POST_DATA)
                        : $HTTP_RAW_POST_DATA;
                    break;
                default:
// TODO: if utf8 conversion fails, throw: 32701 ---> parse error. unsupported encoding?
                    // This will fail on parser if mb_convert_encoding is unavailiable.
                    $data = (function_exists('mb_convert_encoding') && is_callable('mb_convert_encoding'))
                        ? mb_convert_encoding($HTTP_RAW_POST_DATA, 'utf-8', $encoding)
                        : $HTTP_RAW_POST_DATA;
                    break;
            }
        }
        $this->message = new IXR_Message($data);
        if (!$this->message->parse()) {
            $this->error(-32700, 'parse error. not well formed');
        }