Dynamic Namespaces Socket.IO

Question

How can I use dynamic namespaces in socket.io.

I\'m looking in the (poor) documentation, and it says that namespaces must be used like this:

io.of(\'/news\

Answer 1

Here is one way. Here is a socket.io subclass I created to solve the problem:

https://github.com/PencilCode/dynamic.io

That subclass adds dynamic namespaces as well as virtual hostname support (each host can go into its own namespace tree if you like). That repo has some examples.

Here is a universal socket.io listener that listens to every namespace requested, and logs a message for every socket that connects. You could listen to a different regexp to listen to any subset of namespaces.

It works with the standard socket.io client library without any modification.

var DynamicServer = require('dynamic.io');
io = DynamicServer({
    host: true,                     // Enable virtual host handling
    publicStatus: true              // Enable /socket.io/status page.
});
// Any number of namespace patterns can be set up.
// This is an example of a single catch-all pattern.
io.setupNamespace(/.*/, function(nsp) {
    nsp.on('connect', function(socket) {
        console.log('a socket connected on', nsp.fullname());
    });
    nsp.expire(function() {
        console.log(nsp.fullname(), 'is expiring');
    });
});
io.listen(8888);