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Invokes the iterator function once for each item in the client collection (only for WebSocket). https://docs.totaljs.com/latest/en.html#apiFrameworkControllercontroller.all

Some module:

// bla bla
F.emit('myevent', mytask);
// bla bla

Websocket action:

function websocket_action() {
    var self = this;

    self.on('open', ...);
    self.on('close', ...);
    self.on('message', ...);

    F.on('myevent', function(data) {
        // data === mytask
        self.send(data);
    });
}