How to implement a full duplex channel over TCP using a single thread?

Question

On the network I am writing, I need to send and receive messages through a TCP socket. Messages can be sent or received at any time, that is, they must work as a full duplex channel.

I managed to implement such a scenario using two threads: the main thread calling send (), and the dedicated thread, which was mostly blocked when recv () was called.

My question is: is it possible to implement the same scenario with a single thread? That is, by registering some callback function?

As a side note: I need to implement this script in C ++, Java and Python.

Answer 1

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