At least our tests are plagued by RPC connection lifetime issues. The connection (in python, test/functional/test_framework/authproxy.py) often throws BrokenPipeError ( ConnectionResetError on freebsd, OsError: [WinError 10053] An established connection was aborted by the software in your host machine on Windows)

On Windows, running feature_fee_estimation is just not possible at all. See

Useful skills:

• Strong background in internet protocols
• Strong background in libevent
• Basic knowledge of the Bitcoin Core HTTP RPC server and functional tests' RPC dispatcher

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