http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=1332
------- Comment #11 from martin.mathieson@xxxxxxxxxxxx 2007-01-30 23:11 GMT -------
I think your message had the wrong AVP length. It had 2 bytes of padding, but
your length field said 16 instead of 14. There are 8 bytes of header, 6 bytes
of AVP data.
>From rfc 3588:
"Each AVP of type OctetString MUST be padded to align on a 32-bit
boundary, while other AVP types align naturally. A number of zero-
valued bytes are added to the end of the AVP Data field till a word
boundary is reached. The length of the padding is not reflected in
the AVP Length field."
Also:
"AVP Length
The AVP Length field is three octets, and indicates the number of
octets in this AVP including the AVP Code, AVP Length, AVP Flags,
Vendor-ID field (if present) and the AVP data. If a message is
received with an invalid attribute length, the message SHOULD be
rejected."
These make it clear that the length shouldn't be rounded up, but should
actually be 14. Tomorrow I'll add a couple of malformed expert items to show
cases where the AVP length is wrong.
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