node js getting the HTTP Request name

   http.createServer(function (request, response) {
   request.on("end", function () {

    if(request.method='PUT')
    {
    buf1='This is PUT';
    console.log('received PUT');
    }

       response.writeHead(200, {
         'Content-Type': 'text/plain'
      });  
      response.end('Hello HTTP!'+buf1);
   });

I see that even I just try to do a GET also, the PUT command is gettingexecuted. is there anything basic I am missing? all I need is my program should read all headers based on method.