crypto-nodes/socketChannelManager.js

module.exports = function(RED) {

    function socketChannelManager(config) {
		
        RED.nodes.createNode(this,config);
	
		var count = 0;
        var node = this;
		
		node.status({fill:"red",shape:"dot", text:"waiting for subscribers"});
		
        node.on('input', function(msg) {
						
			msg.socket.on('subsribe', function(channel) {
				
				msg.socket.join(channel);
				
				count++;
				node.status({fill:"green",shape:"dot", text: msg.socket.handshake.address + ' joined ' + channel + ' (' + count + ')' });
				
			});
			
			msg.socket.on('unsubsribe', function(channel) {
				
				msg.socket.leave(channel);
				
				count++;
				node.status({fill:"red",shape:"dot", text: msg.socket.handshake.address + ' left ' + channel + ' (' + count + ')' });
				
			});
			
		});
        
    }
	
    RED.nodes.registerType("socketChannelManager",socketChannelManager);
	
	function socketChannelBroadcaster(config) {
		
        RED.nodes.createNode(this,config);
	
		var count = 0;
        var node = this;
		
		node.status({fill:"red",shape:"dot", text:"nothing sent yet"});
		
        node.on('input', function(msg) {
						
			count++;
			
			delete msg.PROVIDER;
			//global.app.io.
			
			var roomsAdapter = global.app.io.sockets.adapter.rooms;
			var roomName     = msg.EXCHANGE + '/' + msg.FROMSYMBOL + '/' + msg.TOSYMBOL;
			
			if(roomsAdapter[roomName]) {
			
				var clients = roomsAdapter[roomName].sockets;   
				
				//to get the number of clients
				var numClients = (typeof clients !== 'undefined') ? Object.keys(clients).length : 0;
				
				/*
				console.log('A');
				console.log(global.app.io.sockets.adapter.rooms);
				console.log('B');
				console.log(msg);
				console.log('C');
				*/
				//console.log(clients);
				//console.log(numClients);
				
				
				var msgJson = JSON.stringify(msg);
				
				for (var clientId in clients ) {
					
					 //this is the socket of each client in the room.
					 var clientSocket = global.app.io.sockets.connected[clientId];

					 //you can do whatever you need with this
					 clientSocket.emit('data', msgJson );

				}
				
				node.status({fill:"green",shape:"dot", text: 'Processed ' + count + ' data ticks, last broadcasted to ' + numClients + ' clients' });
				
			}
			
		});
        
    }
	
    RED.nodes.registerType("socketChannelBroadcaster",socketChannelBroadcaster);
	
}