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We should have two protocols in classification results only when the
"master" protocol allows some sub-protocols.
Classifications like `AmazonAWS`, `TLS/AmazonAWS`, `DNS/AmazonAWS` are
fine. However classifications like `NTP/Apple`, `BitTorrent/Azure`,
`DNScrypt.AmazonAWS` or `NestLogSink.Google` are misleading.
For example, `ndpiReader`shows `BitTorrent/Azure` flows under `Azure`
statistics; that seems to be wrong or, at least, very misleading.
This is quite important since we have lots of addresses from CDN
operators.
The only drawback of this solution is that right now ICMP traffic is
classified simply as `ICMP`; if we are really interested in ICMP stuff
we can restore the old behaviour later.
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Fix: 7a3aa41a
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As a general rule, the higher the confidence value, the higher the
"reliability/precision" of the classification.
In other words, this new field provides an hint about "how" the flow
classification has been obtained.
For example, the application may want to ignore classification "by-port"
(they are not real DPI classifications, after all) or give a second
glance at flows classified via LRU caches (because of false positives).
Setting only one value for the confidence field is a bit tricky: more
work is probably needed in the next future to tweak/fix/improve the logic.
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The goal is to have a (roughly) idea about how many packets nDPI needs
to properly classify a flow.
Log this information (and guessed flows number too) during unit tests,
to keep track of improvements/regressions across commits.
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requests/responses (v1/v2).
* Renamed dnscrypt.pcap to simple-dnscrypt.pcap
Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
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