Readings: Socket.io Namespaces and Roomsv2

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Jacob-Wendt edited this page Jul 2, 2019 · 1 revision

Socket.io

Default namespace

the default namespace is / and it’s the one Socket.IO clients connect to by default, and the one the server listens to by default.
Each namespace emits a connection event that receives each Socket instance as a parameter

Custom namespaces

To set up a custom namespace, you can call the of function on the server-side
On the client side, you tell Socket.IO client to connect to that namespace
The namespace is an implementation detail of the Socket.IO protocol, and is not related to the actual URL of the underlying transport, which defaults to /socket.io/…

Rooms

Within each namespace, you can also define arbitrary channels that sockets can join and leave

Joining and leaving

You can call join to subscribe the socket to a given channel
And then simply use to or in (they are the same) when broadcasting or emitting