It looks like AdonisJS is using the request.url to parse these details out using the parse method from node:url and it looks like the request.url only contains the path for the request. So, it's being built without those details included and since the parsedUrl object is just an instance of URL that'd be why they're still included despite being null.

You can get a complete parse of the URL by doing:

router.get('/my-endpoint', (ctx) => {
  // passing true to completeUrl will include the query string
  const completeUrl = new URL(ctx.request.completeUrl(true))
  return completeUrl
})

  

    

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Host and hostname will mostly be the same. The difference is, if the URL contains a port, host will include it and hostname will not.

REQUEST: https://test.com:3333/endpoint
HOST: test.com:3333
HOSTNAME: test.com