Redirect domains starting with www to non-www ones in node.js, express and coffeescript

www-redirect.coffee

express = require 'express'
app     = module.exports = express.createServer()


# redirect to a non-www domain
app.get '/*', (req, res, next) ->
  if req.headers.host.match(/^www\./)?
    res.redirect 'http://' + req.headers.host[4..] + req.url, 301
  else next()

app.get '/', (req, res) ->
  res.send 'Hello World'


app.listen(process.env.PORT || 3000)
console.log "Listening on port %d in %s mode...", app.address().port, app.settings.env

I like this better:

app.get '/*', (req, res, next) ->
if req.headers.host.match(/^www\./)?
  res.redirect "http://#{req.headers.host[4..]}#{req.url}", 301
else next()

Thanks for updating it!