node.js - express server unresponsive after 5 POST's -

i using express serve single page webapp, , rest endpoint said app. works fine static page serving, after 5 posts server becomes unresponsive. have seen lot of other posts problem make sure call res.send() or res.end() in every call somewhere, regardless of how logic branches. app.js code below.

/**  * module dependencies.  */  var express = require('express'),   http = require('http'),   path = require('path');  var app = express(); var auth = require("./controllers/authentication.js");  http.globalagent.maxsockets = 100;  app.configure(function(){   app.set('port', process.env.port || 3000);   app.use(express.logger('dev'));   app.use(express.bodyparser());   app.use(app.router); });  app.configure('development', function(){   app.use(express.errorhandler()); });  app.get('/', function(req, res) {         res.sendfile('./public/index.html'); });  app.get('/public/*', function(req, res) {         res.sendfile('.'+req.url); });  app.post('/auth/login', function(req, res, next) {   auth.login(req, res, next); });  app.post('/auth/logout', function(req, res, next) {   auth.logout(req, res, next); });  app.post('/auth/verify', function(req, res, next) {   auth.verify(req, res, next, function(req, res, next) {     res.conenttype = 'json';     res.send(200, "authorized");   }); });  http.createserver(app).listen(app.get('port'), function(){   console.log("express server listening on port " + app.get('port')); }); 

and here command line output (i tried issuing other requests after, server not process them). assume somehow not terminating connection properly, cant figure out how.

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