CODEWITHSUNDEEP
node.jssocketswebsocketsocket.io
qräbnö
qräbnö

Reputation: 3031

Socket.IO 4.0.1: Get socket by id

I used

const my_socket = io.sockets.connected['YnwlYH-gCKT2K9jEAAAu'];

a lot.

https://stackoverflow.com/a/24464450/1707015

Is it broken in 3.X and 4.0.1?

$ npm list socket.io
[email protected]

$ npm list socket.io-client
[email protected]

# Object.keys(io.sockets):
_events,_eventsCount,_maxListeners,sockets,_fns,_ids,server,name,adapter

# io.sockets.connected:
undefined

# io.sockets.connected['YnwlYH-gCKT2K9jEAAAu']:
TypeError: Cannot read property 'YnwlYH-gCKT2K9jEAAAu' of undefined
    at Socket.<anonymous> (/path:row:char)
    at processTicksAndRejections (internal/process/task_queues.js:86:5)

I can get it run with version 2 (instead of 3 or 4):

$ npm install --quiet --save-dev [email protected] [email protected]

Yes, this is literally an X - for the newest sub version.

Do you have any refactoring instructions?

Upvotes: 12

Views: 12493

Answers (3)

Prakash
Prakash

Reputation: 621

For any adapter, you can use fetchSockets() function to get the socket connection by socketId.

const socketList = await io.in(socketId).fetchSockets();

Instead of socketId, you can use socketRoom as well.

Refer here for the documentation.

Upvotes: 1

HuyNguyen
HuyNguyen

Reputation: 1

"socket.io": "^4.1.3"

nsp.sockets.get(socketid).join(roomId)
nsp.to(roomId).emit("message",{message : "something"})

it worked for me

Upvotes: -1

qr&#228;bn&#246;
qr&#228;bn&#246;

Reputation: 3031

This question and answer is probably a (newer/better) duplicate of https://stackoverflow.com/a/66835961/1707015. Sorry, I only saw it now. Credits to Sanjay Nishad.

const my_socket = io.sockets.sockets.get('YnwlYH-gCKT2K9jEAAAu');

Upvotes: 33

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