javascript - How to make a redirect (301) in Node.js / Express?

Question

I have a static site, a simple single page layout that I deploy in Dokku. I need to make a redirect (301) from www to non www and from *.website1.com to website2.com, but I don't know how. I was trying to use express-force-domain in npm but it makes my URL's crazy and having some redirect loops, I was trying other methods that I find on the web but none succeeds.

my server.js is:

var express = require('express')
var app = express();

app.set('port', (process.env.PORT || 80))
app.use(express.static(__dirname + '/public'))

app.get('/', function(request, response) {
  response.send('Hello World!')
})

app.listen(app.get('port'), function() {
  console.log("Node app is running at localhost:" + app.get('port'))
})

That is the version that works, but without redirects.

Answer 1

res.redirect(301, 'http://yourotherdomain.com' + req.path)

See Express documentation.