multiprocessing.connection

Usually message passing between processes is done using queues or by using Connection objects returned by Pipe().

answer_challenge: Receive a message, calculate the digest of the message using authkey as the key, and then send the digest back.

Client: Returns a connection to the address of a `Listener`
Connection: Connection class based on an arbitrary file descriptor (Unix only), or a socket handle (Windows).

deliver_challenge: Send a randomly generated message to the other end of the connection and wait for a reply.