How do you force express on node.js in Azure Websites to use https?

Running on Windows Azure Websites, I want to use ssl via the default * certificate. It works without doing anything, but http is also available for every destination, not just https. How do I force a redirect from http to https? Normally I could just do something like:

var https = require('https'); ... var options = { key: fs.readFileSync('path.key'), cert: fs.readFileSync('path.crt') }; ... https.createServer(options, app)

but since I don't know anything about the * certificate, such as its path, that's not going to work.

How do I redirect all or some requests to https?

-------------Problems Reply------------

In web.config, add the following rule before any other rule that has stopProcessing="true".

<rule name="RedirecttoHTTPS">
<match url="(.*)" />
<add input="{HTTPS}" pattern="off" ignoreCase="true" />
<add input="{URL}" pattern="/$" negate="true" />
<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
<action type="Redirect" url="https://{SERVER_NAME}/{R:1}" redirectType="SeeOther" />

You can also just use the normal http.createServer(app) for production if you want to the * wildcard certificate.


  1. How to require SSL in IIS7 and Azure with Rewrite
  2. URL Rewrite Module Configuration Reference

Since it sounds like Azure Websites is acting as a reverse proxy in your case, this approch may work for you:

If you can get the protocol from the following, it should help you:


This should give you the http or https you need to key on on order to do a redirect if it is not valid for the resource you are serving.

I use code like the following to redirect any time I get a request (for an html file or site root for example). I put all the files I want to be secure in a /secure directory to make it easy to know what should and should not be ssl:

protocol = req.headers['x-forwarded-proto'];

if ((req.url.lastIndexOf('.html') == (req.url.length - 5)) || (req.url.slice(-1) == '/')) {
if (protocol == 'http') {

if (req.url.indexOf('/secure/') == 0) {
console.log('Non ssl request made to secure resource: ' + req.url);
console.log('Redirecting to https://' + site_host_name + req.url);
{Location: 'https://' + site_host_name + req.url}
} else {
} else {
if (req.url.indexOf('/secure/') != 0) {
console.log('ssl request made for non-secure resource: ' + req.url);
console.log('Redirecting to http://' + site_host_name + req.url);
{Location: 'http://' + site_host_name + req.url}
} else {

Category:node.js Views:0 Time:2013-12-14

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