#52

lib/index.js

@@ -1,13 +1,43 @@
+/*
+ * The skeleton of this file is gotten from socket.io source code.
+ *
+ * If you are looking for a original code then you are on wrong way. 
+ * All this staff is intended to be for study porpuse.
+ */
 var Manager = require('./manager');
 var Socket = require('./socket');
 var Emitter = require('./eventemitter');
 
-module.exports = io;
+var util = require('./util');
+var url = require('url');
 
-function io(url, opts) {
+module.exports = lookup;
+
+var cache = exports.managers = {};
+
+function lookup(url, opts) {
+	if(! util.isString(url)) throw new Error('url is expected to be string');
+
+	//I do not check if opts is object or not. The programmer is in charge with this moment
 	opts = opts || {};
+
+	var urlInfo = url.parse(url);
+	var id = urlInfo.protocol + '//' + urlInfo.host; //protocol + hostname + port
+	var io;
+
+	if(opts.forceNew || opts['force new connection'] || opts.multiplex === false){
+		io = new Manager(url, opts);
+	} else {
+		if( ! cache[id]) {
+			cache[id] = new Manager(url, opts);
+		}
+
+		io = cache[id];
+	}
+
+	return io.socket(urlInfo.pathname);
 }
 
-io.Manager = Manager;
-io.Socket = Socket;
-io.Emitter = Emitter;
+lookup.Manager = Manager;
+lookup.Socket = Socket;
+lookup.Emitter = Emitter;