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of protocol-id-plus-datum pairs, so that multiple protocols can attach
information to the same conversation.
Dissectors that attach information to a conversation should not assume
that if they find a conversation it has one of its data attached to it;
the conversation might've been created by another dissector.
svn path=/trunk/; revision=3901
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that look up conversations in hash tables, unless they are arguments
that will be ignored; if they're not being ignored, then if the argument
is a null pointer you may get a crash if it's dereferenced, and if it's
not a null pointer you'll only get a match if the conversation has
whatever stuff the arguments points to as its first address or port.
If you match a conversation with a wildcarded address and/or port, and
the address and/or port matched a non-wildcarded search argument, and
the conversation is for a connection-oriented transport protocol, set
the wildcarded address and/or port for the conversation to the value
that matched it.
svn path=/trunk/; revision=3897
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"try_conversation_dissector()" does - start with as exact matches as
possible, and then start doing wildcarding - so that it can find
conversations with wildcard addresses or ports even if both address and
port arguments are supplied to it.
svn path=/trunk/; revision=3893
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to imply that
1) conversations have source and destination addresses and ports
- they don't (if they did, they'd be monologues, not
conversations), they just have two address/port pairs for the
two endpoints, with one or more of the address or port in the
second pair possibly being wildcarded;
2) the first and second address or port argument to
"find_conversation()" or "try_conversation_dissector()" have
anything to do with the first or second address/port pair in
a conversation - they don't, the two arguments to those
routines are matched against *both* address/port pairs for a
conversation;
as otherwise people might think that they need to add flags to wildcard
the first arguments "conversation_new()" or "find_conversation()" (they
don't, they just have to pass the non-wildcarded address/port first and
then pass the wildcarded one, even if that means passing the destination
first and source second).
svn path=/trunk/; revision=3537
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Split some lines differently.
svn path=/trunk/; revision=3519
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another (copying the data to a mallocated array) in
"epan/packet_info.h", and use it in the conversation code.
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structures as arguments, that evaluates to "true" if the two addresses
are equal and "false" if they're not equal. Use that macro in the
conversation code.
svn path=/trunk/; revision=3509
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"old_dissector_try_heuristic()" any more, as their users have all been
tvbuffified - get rid of them.
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in "try_conversation_dissector()" that they're done in
"old_try_conversation_dissector()".
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conversation doesn't have a dissector.
svn path=/trunk/; revision=2655
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source *and* destination port and/or both the source *and* destination
address passed to "find_conversation()", because the packet for which
you're trying to find the conversation may be going in the opposite
direction to the packet for which the conversation was originally
created.
Create different hash tables for wildcarded conversations, to reduce the
number of "is this a wildcard?" tests done when doing hash lookups.
This is sufficient to allow the TFTP dissector to use conversations
rather than being special-cased in the UDP dissector, and may also be
sufficient to handle a similar problem with SMTP (request goes from
client IP X port Y to server IP Z's well-known port, reply comes back
from some other port on server Z to client IP X port Y), but further use
may reveal other changes that should be made.
svn path=/trunk/; revision=2525
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Jeff Foster.
svn path=/trunk/; revision=2523
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svn path=/trunk/; revision=2458
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