发射到socket.io 1.X名称空间的特定空间

Question

• I've implemented a number of socket.io namespaces that a user can connect to based on the page they are on.

• Emitting data to a particular namespace:room combination seems to require excess boilerplate.

• This is how I'm currently setting up the namespace and emitting events to sockets in a given room:

---

1) Setting up the namespace

let newsNs = io.of('/news');
newsNs.on(CONNECTION, socket => {
    socket.join('political');
});

2) Emitting an event to sockets in the /news namespace and political room:

newsNs.in('political').clients((err, clients) => {
    clients.forEach(c => newsNs.connected[c].emit(EVENT, 'data'));
})

---

Is there a cleaner and more concise way to emit to all sockets in a namespace:room combination without first iterating over each client and then deriving the sockets from someNs.connected?

Answer 1

A simple newsNs.to('political').emit(payload) should suffice.

Check out http://socket.io/docs/rooms-and-namespaces/#joining-and-leaving as an example.