Errors from remote services not correctly formatted at endpoint level

[claustres]

Steps to reproduce

Run an authenticated app with some services.
Run a microservices app exposed to the first one.
Try to reach a remote service from the authenticated app API endpoint without a token, eg open http://localhost:8081/api/remote_service in a browser.

Expected behavior

The 401 HTML error page should be returned

Actual behavior

The browser display [object Object]. This is probably due to the fact the raw error object is returned. The behavior might be similar to what happen in #3: because the express.errorHandler() middleware is registered before the remote services it is not applied on remote errors.

System configuration

Module versions : 0.3.4

NodeJS version: 8.9

Operating System: Windows

[claustres]

Partially solved by 1dc0714, using the error handler as an after middleware.

However the returned error page is a general error, it does not maintain the original error type property.