I keep getting EADDRINUSE when deploying a simple node server - linux

Question

okay this is really strange , i am getting EADDRINUSE when implementing a simple server ,
i have changed the ports
looked for the already running node js process
tried using killall -9 node with root
looking for process hoarding the port through sudo netstat -alpn |grep node
var http= require('http');
var server=http.createServer(function(request,response){
response.end("kameha kameha....");
}).listen("162.x.x.38",8010);
process.stdin.resume();
process.on('uncaughtException',function(err){
console.log("closing due to uncaught exception:"+err.message+" "+err.data);
server.close();
process.exit(1);
});
process.on('exit',function(){
console.log("exiting the program");
server.close();
process.exit(0);
});
process.on('SIGINT', function(){
console.log("caught cntrl +c closing the program and performing cleanups");
server.close();
process.exit(0);
});
still no help , i am running centos 6.7 on a vps hosted by bluehost , so let me sum is down, there is no node process running , no prcocess is hoarding the port
strangely enough when i put my host as localhost it starts working but still i am unable to connect it via wget
wget localhost:8010
--2015-05-22 15:19:15-- http://localhost:8010/
Resolving localhost... ::1, 127.0.0.1
Connecting to localhost|::1|:8010... failed: Connection refused.
Connecting to localhost|127.0.0.1|:8010... failed: Connection refused.
when running as local host netstat gives the following :
sudo netstat -alp |grep node
unix 2 [ ACC ] STREAM LISTENING 453187 23439/node localhost
protocol as stated by netstat command is unix instead of tcp ,though i dont have much experience with linux so ....but its strange because above code is running fine in windows , but i dont know what is happening here ..help please !!

Answer 1

The parameters for http.listen() were backwards.
From the node.js docs:
server.listen(port[, hostname][, backlog][, callback])# Begin
accepting connections on the specified port and hostname. If the
hostname is omitted, the server will accept connections directed to
any IPv4 address (INADDR_ANY).
The correct call, from the docs link above, is as follows:
Simple, works on any address for the host
var server=http.createServer(function(request,response){
response.end("kameha kameha....");
}).listen(8010);
Bind to localhost only
var server=http.createServer(function(request,response){
response.end("kameha kameha....");
}).listen(8010, "127.0.0.1");
Bind to 1.2.3.4 is similar
var server=http.createServer(function(request,response){
response.end("kameha kameha....");
}).listen(8010, "1.2.3.4");