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socket.io-adapter
Advanced tools
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.
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!');
});
This package is an adapter for Socket.IO that enables broadcasting of events to multiple servers. It uses Redis as a pub/sub mechanism, allowing for scaling applications by distributing the load across several nodes. Compared to socket.io-adapter, socket.io-redis is specifically designed for use with Redis to support multi-server setups.
Socket.IO Emitter allows you to emit events to Socket.IO servers from non-Socket.IO processes (e.g., a script or a backend service). It's useful for integrating different parts of your system with your real-time components. Unlike socket.io-adapter, which is focused on managing rooms and namespaces within a Socket.IO server, socket.io-emitter is designed for emitting events from outside the Socket.IO server environment.
Default socket.io in-memory adapter class.
This module is not intended for end-user usage, but can be used as an interface to inheirt from from other adapters you might want to build.
As an example of an adapter that builds on top of this, please take a look at socket.io-redis.
MIT
FAQs
default socket.io in-memory adapter
The npm package socket.io-adapter receives a total of 3,618,275 weekly downloads. As such, socket.io-adapter popularity was classified as popular.
We found that socket.io-adapter demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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