Http-proxy-middleware: Dynamically change target via request headers

[kunokdev]

Is there any way to dynamically change target depending on request headers?

PS. I tried your router thing, but for it, I still need to predefine urls, however I need them to be fully dynamic.

[ghost]

You should still be able to define fully dynamic targets with the router, as it accepts the request, from which you can grab the headers. So, something like this:

app.use(proxy({
  target: 'http://example.com',
  router (req) => {
    let newTarget = req.headers['my-header-containing-the-url-or-flag']
    // ... transformation logic ... //
    return newTarget
  }
})

[kunokdev]

@UseHandsfree Thanks for contribution, that works well!