Python · Sockets & Networking

Serving many clients in one process by looping over nonblocking sockets and checking each one is called what — and what's its cost? Which module avoids it?

Answer locked. Get the free KnowCard app to reveal it — plus spaced-repetition review so it actually sticks.

This is one card from the KnowCard library — thousands more across SAP, Linux, Python and more. In the app you get the answer, AI explanations, and cards that come back right before you would forget them. Free to start on iOS, Android or the web.

More in Sockets & Networking

You need a network protocol that guarantees every byte arrives, in order, with no loss. Which socket type do you create, and what do you give up vs the alternative?

On a TCP server you call s.accept(). Which socket do you then use to call recv/send with the client?

What is the correct order of TCP server calls before you can talk to a client, and what does each step do?

What does this client snippet do wrong? ```python s = socket.create_connection( (ip, 50000)) s.send("hello") ```

A peer sends exactly 1000 bytes in one send. Your TCP code does data = conn.recv(1024). Is data guaranteed to be all 1000 bytes?

In a TCP receive loop, how do you detect that the peer closed the connection? ```python while data := conn.recv(1024): ... ```

Start learning today

Free to start — download the app or use it in your browser.