Learning Python Networking - Second Edition

Executing client and server

We start the server with the echo_server_ipv6.py Python command and wait for a connection:

usage: echo_server_ipv6.py [-h] --port PORT

We must pass the port for listening connections as an argument:

$ python echo_server_ipv6.py --port 7575Waiting connections in ::1:7575

Next, we start the client with the same port parameter:

$ python echo_client_ipv6.py --port 7575 Connected to the server --->::1:7575 Send data to server: Hello from ipv6 clientReceived initial message from server: Hello from ipv6 client 

We will see that the server has already found the connection:

Connected to ('::1', 5223, 0, 0) Received data from the client: [Hello from ipv6 client] Sent data echoed back to the client: [Hello from ipv6 client] ...