How it works...

This recipe first creates a server thread and launches it in the background. Then it launches three test clients to send messages to the server. In response, the server echoes back the message to the clients. In the handle() method of the server's request handler, you can see that we retrieve the current thread information and print it. This should be different in each client connection.

In this client/server conversation, the sendall() method has been used to guarantee the sending of all data without any loss:

$ python 2_2_threading_mixin_socket_server.py
Server loop running on thread: Thread-1
Client received: b"Thread-2: b'Hello from client 1'"
Client received: b"Thread-3: b'Hello from client 2'"
Client received: b"Thread-4: b'Hello from client 3'"