server/broadcast.js
function(typeCode, listener){
				var c = delByType[typeCode];
				if(c === undefined) c = delByType[typeCode] = [];
				c.push(listener);
			}
function(typeCode, listener){
				var c = delByType[typeCode];
				if(c === undefined) c = delByType[typeCode] = [];
				c.push(listener);
			}
cb(typeCode, id)