nodejs, nginx configuration

######################## nginx.conf ########################
include /Users/ankitthakur/nginx/sites-available/*;
######################## nginx.conf ########################


######################## node config ########################
# The upstream module is the link between Node.js and Nginx.
# Upstream is used for proxying requests to other servers.
# All requests for / get distributed between any of the servers listed.
upstream nodeserver {
  # Set up multiple Node.js webservers for load balancing.
  # max_fails refers to number of failed attempts
  # before server is considered inactive.
  # weight priorities traffic to server. Ex. weight=2 will recieve
  # twice as much traffic as server with weight=1
  server localhost:3000 max_fails=0 fail_timeout=10s weight=1;
  server localhost:3001 max_fails=0 fail_timeout=10s weight=1;
  server unix:/tmp/devNode;

  # Send visitors back to the same server each time.
  ip_hash;

  # Enable number of keep-alive connections.
  keepalive 512;
}

server {
    listen 71;
    listen [::]:71 default_server ipv6only=on;

    # Domain names.
    # Make sure to set the A Record on your domain's DNS settings to your server's IP address.
    # You can test if was set properly by using the `dig` command: dig yourdomain.com
    server_name devnode.com www.devnode.com;
	access_log /var/log/nginx/access.log;
	
	# GZIP Compression
	gzip 			on;
  	gzip_http_version	1.1;
  	gzip_comp_level		6;
	gzip_vary		on;
	gzip_min_length		1000;
	gzip_proxied		any;
	gzip_types		text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
	gzip_buffers		16 8k;
	gzip_disable 		"MSIE [1-6]\.(?!.*SV1)";
	
	# proxy to the node instance
	location / {
		
		# root			www/nodeApps/myapp
		
		# Set this to your upstream module.
		proxy_pass 		http://nodeserver;
		
		# Proxy headers.
		proxy_set_header	X-Real-IP		$remote_addr;
		proxy_set_header	X-Forwarded-Proto	$scheme;
		proxy_set_header	X-Forwarded-For		$proxy_add_x_forwarded_for;
		proxy_set_header	Host			$host;
		proxy_set_header	X-NginX-Proxy		true;
		proxy_set_header	Upgrade			$http_upgrade;
		proxy_set_header	Connection		"upgrade";
		proxy_cache_bypass	$http_upgrade;
		proxy_http_version	1.1;
		proxy_redirect		off;
	    
		# Go to next upstream after if server down.
		proxy_next_upstream	error	timeout	http_500	http_502	http_503	http_504;
		proxy_connect_timeout	5s;
	    
		# Gateway timeout.
		proxy_read_timeout	20s;
		proxy_send_timeout	20s;
		
		# Buffer settings.
		proxy_buffers		8		32k;
		proxy_buffer_size	64k;	
	}
}
######################## node config ########################


######################## command line #######################
ln -nfs /Users/ankitthakur/nginx/sites-available/nodeServer.conf /Users/ankitthakur/nginx/sites-enabled/nodeServer.conf
######################## command line #######################

######################## reference #######################
Unix socket permissions depend on umask, so set umask before listen and reset it after listen succeeds (the callback parameter). The following code will do that.

var http = require("http");
var oldUmask = process.umask(0000);
var server = http.createServer(function(request, response) { 
  // ...
});

server.listen("/some/socket/path", function() {
  process.umask(oldUmask);
});

If there is worry about what happens between the listen() succeeding and the callback being called, you can always set the permissions explicitly (not depending on umask) with a fs.chmodSync call when the listen succeeds.
######################## reference #######################


###################### node server code. #####################
/**
 * Module dependencies.
 */

var express = require('express');
var routes = require('./routes');
var user = require('./routes/user');
var http = require('http');
var path = require('path');
var fs = require('fs');
var mask = process.umask(0);
var socket = '/tmp/devNode';

if (fs.existsSync(socket)) {
    fs.unlinkSync(socket);
}

var app = express();

// all environments
app.set('port', process.env.PORT || socket);
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
app.use(express.favicon());
app.use(express.logger('dev'));
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(app.router);
app.use(express.static(path.join(__dirname, 'public')));

// development only
if ('development' == app.get('env')) {
  app.use(express.errorHandler());
}

app.get('/', routes.index);
app.get('/users', user.list);

http.createServer(app).listen(app.get('port'), function(){
  console.log('Express server listening on port ' + app.get('port'));
  if (mask) {
      mask = null;
  }
});
###################### node server code. #####################

Excelent!! thanks!
this line is what I needed
var mask = process.umask(0);