node.js中的favicon.ico请求问题处理

 var http=require("http");
 var server=http.createServer();
 server.on("request",function(req,res){5         console.log(req.url);
     res.end();
 });
 server.listen(1337,"127.0.0.1");

 var http=require("http");
 var server=http.createServer();
 server.on("request",function(req,res){
     if(req.url!=="/favicon.ico")
         console.log(req.url);
     res.end();
 });