What is "socket programming"?

Question

Programming

Periodically I hear about sockets in this context. For example, a couple of times at the interview they asked if I did or would not like to do "socket programming"?
What? Well, I remember that a socket is a pair of ip-ports, are we talking about them? Still available for processors 1151, etc.
If we are talking about the ip-port, then what is meant by this phrase? Is it really some separate big discipline, to transfer data from one socket to another?

Answer 1

web sockets . As a web developer, you were most likely asked about them.

Answer 2

A socket is an abstraction adopted by Unix and carried over to Windows, representing a network connection.
https://en.wikipedia.org/wiki/Berkeley_Sockets

Answer 3

A socket is not a "pair of ip-ports", it's just "connection management", because several connections (servers, yeah!) can be connected to one port of one ip (servers, aha!)
Operations are performed on the socket. I/O, state changes, polling, etc.
When you create a socket, it doesn't have any ip and port yet. They will show up later (or not show up if it's a raw socket).
You can bind a port to the created socket - then connections to this port will change the state of the socket (in the case of tcp - in addition to bind, you also need to listen and accept).
If a socket is made connect, it will create a connection to the server.
In short - a socket is a control handle!