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POCan't set headers after they are sent
 

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    <p>I'm using node version 0.10.3 and Express 3.1.1.</p> <p>I'm trying to return a simple response, but I'm getting the following error:</p> <pre><code>http.js:692 throw new Error('Can\'t set headers after they are sent.'); ^ Error: Can't set headers after they are sent. at ServerResponse.OutgoingMessage.setHeader (http.js:692:11) </code></pre> <p>I've read a lot about it, and tried many solutions but I'm still getting that error. I've used node-inspector and i'm getting the error after that line - </p> <pre><code>res.render('index', { title: 'Express' }); </code></pre> <p><strong>app.js:</strong></p> <pre><code>/** * Module dependencies. */ var express = require('express') , http = require('http') , path = require('path') , socketio = require('socket.io'); var app = express() , server = http.createServer(app) , io = socketio.listen(server); app.configure(function(){ app.set('port', process.env.PORT || 3000); app.set('views', __dirname + '/views'); app.set('view engine', 'hjs'); 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'))); }); app.configure('development', function(){ app.use(express.errorHandler()); }); server.listen(app.get('port'), function(){ console.log("Express server listening on port " + app.get('port')); }); io.configure('production', function(){ io.enable('browser client etag'); io.set('log level', 1); }); io.configure('development', function(){ io.set('log level', 1); }); io.sockets.on('connection', function(socket) { socket.on('event', function(event) { socket.join(event); }); }); require('./routes')(app, io); </code></pre> <p><strong>routes/index.js:</strong></p> <pre><code>var utils = require('../utils') , config = require('../config') , io; module.exports = function(app, socketio) { io = socketio; app.get('/', index); }; var index = function(req, res){ res.render('index', { title: 'Express' }); }; </code></pre> <p><strong>views/index.hjs:</strong></p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt;{{ title }}&lt;/title&gt; &lt;link rel='stylesheet' href='/stylesheets/style.css' /&gt; &lt;/head&gt; &lt;body&gt; &lt;h1&gt;{{ title }}&lt;/h1&gt; &lt;p&gt;Welcome to {{ title }}&lt;/p&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p><strong>package.json:</strong></p> <pre><code>{ "name": "blabla", "version": "0.0.1", "private": true, "scripts": { "start": "app.js" }, "dependencies": { "express": "3.0.3", "hjs": "0.0.4", "cradle": "0.6.4", "twiliosig": "0.0.1", "socket.io": "0.9.11" }, "subdomain": "blabla", "engines": { "node": "0.6.x" } } </code></pre> <p>Any Clue?</p>
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    1. COThe code you post doesn't seem to have issues (I tested it locally as well, works fine).
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    2. COunder the same version of node.js and express ?
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    3. COYes, same versions. I'm not seeing anything obvious in your code which could cause your issues.
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