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I can get room's clients list with this code in socket.io 0.9.
io.sockets.clients(roomName) How can I do this in socket.io 1.0?
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You can check the socket. connected property: var socket = io. connect(); console.
socket.io rooms are a lightweight data structure. They are simply an array of connections that are associated with that room. You can have as many as you want (within normal memory usage limits). There is no heavyweight thing that makes a room expensive in terms of resources.
socket-io. client is the code for the client-side implementation of socket.io. That code may be used either by a browser client or by a server process that is initiating a socket.io connection to some other server (thus playing the client-side role in a socket.io connection).
Once you reboot your machine, you will now be able to happily go to 55k concurrent connections (per incoming IP).
Consider this rather more complete answer linked in a comment above on the question: https://stackoverflow.com/a/24425207/1449799
The clients in a room can be found at
io.nsps[yourNamespace].adapter.rooms[roomName] This is an associative array with keys that are socket ids. In our case, we wanted to know the number of clients in a room, so we did Object.keys(io.nsps[yourNamespace].adapter.rooms[roomName]).length
In case you haven't seen/used namespaces (like this guy[me]), you can learn about them here http://socket.io/docs/rooms-and-namespaces/ (importantly: the default namespace is '/')
Updated (esp. for @Zettam):
checkout this repo to see this working: https://github.com/thegreatmichael/socket-io-clients
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