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Add support for Facebook crawler
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In some networks, there are some anomalous TCP flows where the smallest
ACK packets have some kind of zero padding.
It looks like the IP and TCP headers in those frames wrongly consider the
0x00 Ethernet padding bytes as part of the TCP payload.
While this kind of packets is perfectly valid per-se, in some conditions
they might be treated by the TCP reassembler logic as (partial) overlaps,
deceiving the classification engine.
Add an heuristic to detect these packets and to ignore them, allowing
correct detection/classification.
This heuristic is configurable. Default value:
* in the library, it is disabled
* in `ndpiReader` and in the fuzzers, it is enabled (to ease testing)
Credit to @vel21ripn for the initial patch.
Close #1946
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Signed-off-by: lns <matzeton@googlemail.com>
Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
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Signed-off-by: lns <matzeton@googlemail.com>
Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
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Signed-off-by: lns <matzeton@googlemail.com>
Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
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Extend internal unit tests to handle multiple configurations.
As some examples, add tests about:
* disabling some protocols
* disabling Ookla aggressiveness
Every configurations data is stored in a dedicated directory under
`tests\cfgs`
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