Removal of per flow 'aldata' array. It contained a ptr for each ALPROTO. Instead now we have 2 ptrs in the flow: alparser and alstate.
Various cleanups and dead code removal from the app layer API.
Should safe 100+ bytes memory per flow on 64 bit.
Updated lots of unittests to reflect these changes.
Per packet per app layer parser profiling. Example summary output:
Per App layer parser stats:
App Layer IP ver Proto cnt min max avg
-------------------- ------ ----- ------ ------ ---------- -------
ALPROTO_HTTP IPv4 6 163394 126 38560320 42814
ALPROTO_FTP IPv4 6 644 117 26100 2566
ALPROTO_TLS IPv4 6 670 117 7137 799
ALPROTO_SMB IPv4 6 114794 126 225270 957
ALPROTO_DCERPC IPv4 6 5207 126 25596 1266
Also added to the csv out.
In the csv out there is a new column "stream (no app)" that removes the
app layer parsers from the stream tracking. So raw stream engine performance
becomes visible.
Split stream reassembly in 2 parts: a part that sends ack'd data to the app
layer parsers as soon as it's available, and another part that queues up
data into larger chunks for raw inspection.
Stateful detection for app layer detection keywords, except uricontent. Stores it's partial results in the flow structure. Other modifications:
- Generalize transaction tracking, logging and inspection.
- Adapt http and dcerpc to use the new transaction handling.
- Stream engine now always notifies app layer of a stream eof.
This commit fixes bug #124.
- improve locking of application layer handling, making sure that the flow cannot be freed/cleared when the detection engine is still working with it.
- add a check to the app layer detection to make sure that a match function will only inspect an app layer state if it's of the right type.