Node.js

18.4    Duplex Streams

Duplex streams represent a combination of readable streams and writable streams. You can read data from a duplex stream as well as write data into it. The write and read operations of a duplex stream are independent of each other, and each has its own buffer. A typical implementation of a duplex stream are network sockets as they are used in the net module.

18.4.1    Duplex Streams in Use

Unfortunately, duplex streams can only be described quite abstractly. Much more understandable here, however, are concrete examples. Listing 18.17 contains source code that demonstrates the use of a duplex stream.

import { createServer } from 'net'; createServer((socket) => {  socket.on('readable', () => {    const data = socket.read();