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net

Globalizes the 'net' module functions

  • 1.0.2
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What is net?

The 'net' npm package provides an asynchronous network API for creating stream-based TCP or IPC servers and clients. It is a core module in Node.js, allowing developers to build network applications with ease.

What are net's main functionalities?

Creating a TCP Server

This feature allows you to create a TCP server that listens for incoming connections on a specified port and IP address. The server can send and receive data from connected clients.

const net = require('net');
const server = net.createServer((socket) => {
  socket.write('Hello from server!\n');
  socket.on('data', (data) => {
    console.log('Received:', data.toString());
  });
});
server.listen(8080, '127.0.0.1', () => {
  console.log('Server listening on port 8080');
});

Creating a TCP Client

This feature allows you to create a TCP client that connects to a specified server. The client can send and receive data from the server.

const net = require('net');
const client = net.createConnection({ port: 8080, host: '127.0.0.1' }, () => {
  console.log('Connected to server!');
  client.write('Hello from client!');
});
client.on('data', (data) => {
  console.log('Received:', data.toString());
  client.end();
});
client.on('end', () => {
  console.log('Disconnected from server');
});

Handling Multiple Connections

This feature demonstrates how to handle multiple client connections on a TCP server. Each new connection is logged, and data can be sent and received from each client independently.

const net = require('net');
const server = net.createServer((socket) => {
  console.log('New connection');
  socket.write('Welcome!\n');
  socket.on('data', (data) => {
    console.log('Received:', data.toString());
  });
  socket.on('end', () => {
    console.log('Connection closed');
  });
});
server.listen(8080, '127.0.0.1', () => {
  console.log('Server listening on port 8080');
});

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Package last updated on 19 Jan 2014

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