The current FLowControlHandler keeps a flag to track whether a read() call is pending.
This could lead to a scenario where you call read multiple times when the queue is empty,
and when the FlowControlHandler Queue starts getting messages, channelRead will be fired only once,
when we should've fired x many times, once for each time the handlers downstream called read().
Modifications:
Minor change to replace the boolean flag with a counter and adding a unit test for this scenario.
Result:
I used TDD, so I wrote the test, made sure it's failing, then updated the code and re-ran the test
to make sure it's successful after the changes.
Co-authored-by: Kareem Ali <kali@localhost.localdomain>
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