Querystring in IdentityServer4

Question

Good Morning

I have the following situation:

• The user enters the page with a querystring, for example: https://app.test.com/index.html?name=jhon&age=20&city=vitoria
• The user is not logged in, then is redirected to the user login screen
• Once logged in, the user is redirected to the main page of the "app.test" application configured on the IdentityServer which is https://app.test.com/index.html

My question is, how do I in IdentityServer4 so that after the user is logged in, he is redirected to the main page with the querystring? It is possible?

Answer 1

Typically this is what you'd use the state parameter for when doing an authorize endpoint request. If you're using the standard middleware then to be honest I'm surprised it doesn't work out of the box but it may be possible to use the OpenIdConnectEvents.OnRedirectToIdentityProvider event to manually manipulate the request.

Are you able to post details of the redirect URLs at each step in the flow?