refactored to use callback for error handling

lib/nodejs-mysql-native/client.js

@@ -14,16 +14,22 @@
         return len;
     }
 
-    exports.createTCPClient = function(host, port)
+    exports.createTCPClient = function()
     {
-        var host = host ? host : "localhost";
-        var port = port ? port : 3306;
-        var connection = net.createConnection(port, host);
+        var args       = exports.createTCPClient.arguments,
+            host       = (args.length == 3) ? args['0'] : "localhost",
+            port       = (args.length == 3) ? args['1'] : 3306,
+            callback   = (args.length == 3) ? args['2'] : args['0'],
+            connection = net.createConnection(port, host)
+
+        connection.on("connect", function() {
           connection.pscache = {};
           connection.setEncoding("binary");
           connection.setTimeout(0);
 
-        return new socketClient(connection);
+          callback(null, new socketClient(connection))
+        })
+        connection.on("error", callback)
     }
 
     exports.createUNIXClient = function(path)