Here are some patches and a new module to introduce the notion of Tcap context for a Tcap transaction. For each Tcap transaction, several parameters, like session identifier, start time or OID, will be saved in a hash table, to keep these informations available for the next messages. This context is then given to the upper layer, and can be used, for example, to generate transaction-associated statistics.
Moreover, the Upper protocol, detected in the Begin of the TCAP transaction ( according to the OID ), is saved in the context, and will be reused for the next messages of the transaction. This help the decoding of SS7 messages, without any SSN configuration in the "wireshark preferences".
You will have too, the possibility to apply a filter to see only the messages related to a TCAP transaction. (tcap.srt.session_id=XXX)
To enable the use of the Tcap context, you have 2 new parameters in the preferences,
- SRT, enable search for a Tcap context for any TCAP messages
- persistentSRT, keep the Tcap context, even after the transaction has been closed. This is mandatory with Wireshark, to have a clean display of the stats.
There is 2 new timers in the preferences for the statistics, to tune the retransmission timeout, and messages lost timeout.
svn path=/trunk/; revision=19341
Small patch to ber.c
The tcap dissector has been updated to use this length. I have not tested other asn.1 dissectors to ensure that they correctly use the indefinite encoding flag instead of the length value returning zero.
There may also be some problems when re-assembly is needed, but the ability to deal with indefinite length is much more useful.
For developers the get_ber_length now returns the length of the pdu including the EOC, where you have dissectors that use packet-ber.c the eoc may need to be dealt with separately.
The tcap dissector has had numerous changes to make it less cluttered, and the useful feature of the previous version where a dialogue could be filtered out by selecting either the source or destination transaction ID has been incorporated into this version.
svn path=/trunk/; revision=15414
index of the branch taken or -1 to make prettifications easier to implement.
change the signature of dissect_ber_choice and rename it to dissect_ber_CHOICE to catch all
occurences of the use of this function
update asn2eth to use the new name/signature
update all occurences of this function to the new name and new signature.
svn path=/trunk/; revision=14758
remove the include <epan.asn1.h> from tcap since it no longer needs that file.
only 9 dissectors remain that use asn1.h
svn path=/trunk/; revision=14710
Register "standard" and "lock_info_col" as obsolete preferences, so
they're silently ignored rather than triggering warnings.
Propagate changes to check for "dissect_ber_octet_string()" supplying a
null tvbuff pointer from the checkins to the generated dissector ("Do
not modify this file" means "Do not modify this file"!) to the tcap.cnf
file, so that they're not lost if the dissector is regenerated. (Don't
propagate the checks for "tvb_new_subset()" returning null - it never
returns null.)
Pass -1 to "tvb_new_subset()" when appropriate.
When looping over packet data, check against the reported length, not
the captured length, so we indicate a short frame if we get stopped by
the snapshot length.
Get rid of unused variables.
svn path=/trunk/; revision=14658
- I have had to make some changes to packet-ber to allow for PRIVATE and APPLICATION tags.
- Both ANSI and ITU variants supported without configuration.
- Asn.1 dissectors can now register using an OID value as well as an SSN, the oid it tried first.
svn path=/trunk/; revision=14572
Also move ncp222.py, x11-fields, process-x11-fields.pl,
make-reg-dotc, and make-reg-dotc.py.
Adjust #include lines in files that include packet-*.h
files.
svn path=/trunk/; revision=11410
