How to hold onDown with listeners?

[SoundChaos]

I'm quite new to phaser, and also new to the node.js and socket.io I'm working with. I've been using a tutorial here to get started.

Making a multiplayer browser test game and I can't figure out how to hold an arrow key to have a player move. This code is working per press from inside my game.js file, but it seems like I made it overly complicated.. And I need it to be able to move players while an arrow key is held down continuously. 

Here is how I am reading the down arrow key:

var cursors = game.input.keyboard.createCursorKeys();
cursors.down.onDown.add(Client.sendKeyDown, this);

which calls my client.js as such:

Client.sendKeyDown = function(){
  Client.socket.emit('keyboardDown');
};

Which tells my server.js:

socket.on('keyboardDown',function(){
            console.log('arrow down');
            socket.player.y += 4;
            io.emit('move',socket.player);
        });

And then back to client.js:

Client.socket.on('move',function(data){
        Game.movePlayer(data.id,data.x,data.y);
    });

and then finally to game.js:

Game.movePlayer = function(id,x,y){
    var player = Game.playerMap[id];
    var distance = Phaser.Math.distance(player.x,player.y,x,y);
    var tween = game.add.tween(player);
    var duration = distance*10;
    tween.to({x:x,y:y}, duration);
    tween.start();
};

From what I can see from searching for options, is that I should be using the "isDown" method, but I can't seem to get isDown to trigger my "Client.sendKeyDown".

 

server.js

client.js

game.js