Related: #3476
Motivation:
Some users use TrafficCounter for other uses than we originally
intended, such as implementing their own traffic shaper. In such a
case, a user does not want to specify an AbstractTrafficShapingHandler.
Modifications:
- Add a new constructor that does not require an
AbstractTrafficShapingHandler, so that a user can use it without it.
- Simplify TrafficMonitoringTask
- Javadoc cleanup
Result:
We open the possibility of using TrafficCounter for other purposes than
just using it with AbstractTrafficShapingHandler. Eventually, we could
generalize it a little bit more, so that we can potentially use it for
other uses.
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