What is netsocket?

Question

Computer networks

Explain in detail what is instance no socket? From the literature on networks, I concluded that a socket is just a pair of ip \ port, is that so?
What does it mean to write to a socket or read from a socket? Does the socket exist outside the server? Or is the socket in the node an event emitter like a server...?

Answer 1

in node.js, the net module implements the tcp, upd and unixsock protocols,
it is this module that allows the node to create various servers, as well as connect to other servers , the
http module, for example, is written as a wrapper over the net module that implements the http protocol (which works on top of tcp)
The class itself socket inherits from stream.Duplex