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socket.io-adapter

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socket.io-adapter

default socket.io in-memory adapter


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Weekly downloads
5.9M
increased by3.61%
Maintainers
2
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What is socket.io-adapter?

The socket.io-adapter npm package is designed to be used with Socket.IO, a library that enables real-time, bidirectional and event-based communication between web clients and servers. The adapter is responsible for managing rooms and namespaces, as well as broadcasting and emitting events to a subset of clients. It can be extended to support different backends like Redis, allowing for scaling across multiple processes or servers.

What are socket.io-adapter's main functionalities?

Room Management

This feature allows you to manage rooms, which are arbitrary channels that sockets can join and leave. It enables you to emit events to all clients in a specific room.

const { Server } = require('socket.io');
const io = new Server();
io.on('connection', (socket) => {
  socket.join('some room');
  io.to('some room').emit('some event');
});

Namespace Management

Namespaces are a way to divide your clients into different endpoints or paths. This feature allows you to manage these namespaces, enabling targeted communication and organization.

const { Server } = require('socket.io');
const io = new Server();
const nsp = io.of('/my-namespace');
nsp.on('connection', (socket) => {
  console.log('someone connected to my-namespace');
});
nsp.emit('hi', 'everyone!');

Broadcasting Events

Broadcasting enables you to send a message to all connected clients except for the sender. This is useful for notifying all users about the actions of one.

const { Server } = require('socket.io');
const io = new Server();
io.on('connection', (socket) => {
  socket.broadcast.emit('broadcast', 'hello friends!');
});

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Package last updated on 18 Jun 2024

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