[FYI, Wireshark-dev is probably a better place to ask such questions now...]
Jim Fan wrote:
Hi, I am getting an error in one of the packets I am decoding:
dissector bug, protocol xxx: proto.c:2742 Failed assertion
"(guint)hfIndex < gpa_hfInfo.len"
I found that this could be related to the limitation of how many header
fields can a protocol have. 200 is the default value. In my case I have
over 200 header fields (approximately 260), therefore any header fields
that is after the 200th are reported as assertion error. Ethereal should
have the ability of dynamically increases the memory allocation on the
go based on the dissector definition, but somehow I am getting this
error here.
Anyone has any idea about how to fix this problem?
The header fields are dynamically allocated--by the dissector, no less.
Are they all being registered in 'proto_register_field_array()'? Are
you sure you don't have something wrong with your 'hf_register_info'
array (maybe around the 200th entry) that causes
'proto_register_field_array()' to not read the whole array?
As an example, packet-h245.c has a few more than 200 header fields:
mozart [~/Projects/wireshark/source/]> egrep -c "^static int hf" epan/dissectors/packet-h245.c
1375
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