Have you considered POE? (Learning POE is on my to-do list.)

Or if other languages are an option and this needs to scale out to a large number of connections, have you considered Erlang/OTP? (Which, as I currently understand, effectively hides a multi-threaded event loop in the language runtime, but more-or-less forces you into a message-passing functional programming paradigm as a result. I have heard good things about it but have not yet used it for a non-trivial program myself.)

In reply to Re^3: Mixing asynchronous data feed with synchronous program flow control (in Raku) by jcb
in thread Mixing asynchronous data feed with synchronous program flow control by Your Mother

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