Rooms are used to further separate concerns.
Socket io rooms list.
During development socket io serves the client automatically for us as we ll see so for now we only have to install one module.
A client library that loads on the browser side socket io client.
The mechanics of joining rooms are handled by the adapter that has been configured see server adapter above defaulting to socket io adapter.
Within each namespace you can also define arbitrary channels that sockets can join and leave.
Without using namespace the following 3 parameters can all get sockets in a specific room.
Io sockets does not return an array unfortunately.
To leave a channel you call leave in the same fashion as join both methods are asynchronous and accept a callback argument.
Socket io is composed of two parts.
I m not sure where i m going wrong.
If you are using some db o nosql you can save it for distributed environments.
In 2 0 io sockets manager and io sockets clients don t exist anymore.
Here s a snippet of my code.
I m trying to get a list of created rooms in an application by using io sockets adapter rooms.
I m just getting strings of socket id s and not their names.
These channels are called rooms.
However it would be great to know about all the rooms without an ex.
I know i could keep my own list using an array but don t think this is an optimal solution for 2 reasons.
Were either incorrect or incomplete if you use 2 0.
Socket io already keeps a copy of this list.
In that case every socket in the room excluding the sender will get the event.
In disconnect event you can query this object to know the rooms you have to leave.
After progress on the question how to create socket io multicast groups i found making rooms a great way to do what i needed.
All the answers above and the one here socket io get rooms which socket is currently in or here socket io how do i get a list of connected sockets clients.
Additonally if rooms list is temporary you can clean it whit controlled event after disconnecting.
Each socket in socket io is identified by a random unguessable unique identifier socket id for your convenience each socket automatically joins a room identified by its own id.
Rooms also share the same socket connection like namespaces.
One thing to keep in mind while using rooms is.
I m trying to get a list of all the sockets clients that are currently connected.