Receiving signals in a session

To start receiving all signals sent in a session, add an event listener for the signal event, dispatched by the Session object:

You can also listen for only signals set to a specific type. (You can optionally set the type of a signal when you send a signal.) Register an event listener for the signal:type event, replacing "type" with the type string. For example, the following listens for signals of type "foo":

You can compare the from property of the event object with the connection property of the Session object to see if the signal was sent by your client or another:

Note that you can use a REST API call to send a signal from your server, instead of from a client connected to the session. In this case, the from property of the event object is set to null.