|
Hi Divya, The 2 null bytes (0x00) at the end are, may be, indicating end of
contents for some parameter. Are you sure there is no length field for some parameter, before the
bytes you have sent, in which length is specified as EOC-encoded. Thanks and Best Regards, Vishal. ================== Every time you try to operate on of these weird black controls that are
labelled in black on a black background, a little black light lights up black
to let you know you've done it. - The Restaurant at the End of The Universe -----Original Message----- Hi, I have the following data type, which is encoded
using BER. Component ::= CHOICE {
invoke
[1] IMPLICIT Invoke, returnResultLast [2] IMPLICIT
ReturnResult,
returnError [3] IMPLICIT
ReturnError, reject [4]
IMPLICIT Reject, returnResultNotLast [7] IMPLICIT ReturnResult } ReturnResult ::= SEQUENCE { invokeID INTEGER (-128..127), result SEQUENCE { operationCode
CHOICE {
localValue INTEGER,
globalValue OBJECT IDENTIFIER }, parameter OCTET STRING
(SIZE(1..255)) } OPTIONAL } I recieved the following byte stream as the encoding
for this structure. 0xa2 0x0d 0x02 0x01 0x00 0x30 0x06 0x02 0x01 0x0e
0x80 0x01 0x04 0x00 0x00 This can be decoded as: 0xa2: Tag for ReturnResult structure within
Component (CNTX, CONS, 2) 0x0d: Length of the contents = 13 bytes 0x02: Integer tag (for
invokeID) 0x01: Length of the contents
= 1 byte 0x00: Value of invokeID = 0 0x30: Sequence tag (for
result) 0x06: Length of the contents
= 6 bytes
0x02: Integer tag (for localValue)
0x01: Length of the contents = 1 byte
0x0e: Value of localValue = 0x0e
Assumed tag (UNIV, PRIM, OCTETSTRING_TAG_CODE) and length of 6 -
3 = 3 bytes
0x80: parameter[0]
0x01: parameter[1]
0x04: parameter[2] 0x00: ???? 0x00: ???? As you can see, there are the 2 bytes of value 0
each left over. I wanted to know if this is a valid byte stream since
my decode code gives an error when it reaches these 0. In this case, it is probably manageable since these
extraneous bytes are coming at the end of the byte stream. But could I
get a byte stream that contains such not-needed bytes in the middle of the
byte stream ? Some light on what to do would be much appreciated. Regds, Divya "SASKEN RATED THE BEST EMPLOYER IN THE COUNTRY by the BUSINESS
TODAY Mercer Survey 2004"
SASKEN BUSINESS DISCLAIMER This message may contain confidential, proprietary or legally
Privileged information. In case you are not the original intended Recipient of
the message, you must not, directly or indirectly, use, Disclose, distribute,
print, or copy any part of this message and you are requested to delete it and
inform the sender. Any views expressed in this message are those of the
individual sender unless otherwise stated. Nothing contained in this message
shall be construed as an offer or acceptance of any offer by Sasken
Communication Technologies Limited ("Sasken") unless sent with that
express intent and with due authority of Sasken. Sasken has taken enough
precautions to prevent the spread of viruses. However the company accepts no
liability for any damage caused by any virus transmitted by this email _______________________________________________ ASN1 mailing list http://lists.asn1.org/mailman/listinfo/asn1 -- ***************************************************************** This email and any files transmitted with it
are confidential and intended solely for the use of the individual or
entity to whom they are addressed. Any opinions expressed
in the email are those of the individual and not necessarily the company. This footnote also confirms that this message has
been scanned for viruses and dangerous content by the
MailScanner, and is believed to be clean. ***************************************************************** -- ***************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Any opinions expressed in the email are those of the individual and not necessarily the company. This footnote also confirms that this message has been scanned for viruses and dangerous content by the MailScanner, and is believed to be clean. ***************************************************************** |
_______________________________________________ ASN1 mailing list [email protected] http://lists.asn1.org/mailman/listinfo/asn1
