Blazor (Server) route does not match when complex characters are in the url

[Sebazzz]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

Kind-of a regression of #16840 (fixed in PR #26769), a route is defined for a page with a placeholder. However, when there are weird characters in the URL it doesn't match the route for the page. This worked in .NET 7 and is broken in .NET 8.

In .NET 8 the route does not match:

dbug: Microsoft.AspNetCore.Components.Routing.Router[3]
      Navigating to non-component URI 'http://localhost:5110/project/asdasd/ruimte/fb6566f385ab4e11a27f3393bb22c8ff/bron/%21%40%23%24%25%5E%26%2A%28%29_%2B-%3D%5B%5D%7B%7D%5C%5C%7C%3B%27%3A%5C%22%3E%3F.%2F/bewerken' in response to path '/project/asdasd/ruimte/fb6566f385ab4e11a27f3393bb22c8ff/bron/%21%40%23%24%25%5E%26%2A%28%29_%2B-%3D%5B%5D%7B%7D%5C%5C%7C%3B%27%3A%5C%22%3E%3F.%2F/bewerken' with base URI 'http://localhost:5110/'
dbug: Microsoft.AspNetCore.Components.Routing.Router[1]
      Displaying NotFound because path '/project/asdasd/ruimte/fb6566f385ab4e11a27f3393bb22c8ff/bron/%21%40%23%24%25%5E%26%2A%28%29_%2B-%3D%5B%5D%7B%7D%5C%5C%7C%3B%27%3A%5C%22%3E%3F.%2F/bewerken' with base URI 'http://localhost:5110/' does not match any component route

Expected Behavior

In .NET 7 the route matches and this is logged:

dbug: Microsoft.AspNetCore.Components.Routing.Router[2]
      Navigating to component dotnet_bug.Pages.MyComponent in response to path 'project/asdasd/ruimte/fb6566f385ab4e11a27f3393bb22c8ff/bron/%21%40%23%24%25%5E%26%2A%28%29_%2B-%3D%5B%5D%7B%7D%5C%5C%7C%3B%27%3A%5C%22%3E%3F.%2F/bewerken' with base URI 'http://localhost:5110/'
dbug: Microsoft.AspNetCore.Components.Routing.Router[2]
      Navigating to component dotnet_bug.Pages.MyComponent in response to path 'project/asdasd/ruimte/fb6566f385ab4e11a27f3393bb22c8ff/bron/%21%40%23%24%25%5E%26%2A%28%29_%2B-%3D%5B%5D%7B%7D%5C%5C%7C%3B%27%3A%5C%22%3E%3F.%2F/bewerken' with base URI 'http://localhost:5110/'
dbug: Microsoft.AspNetCore.Components.Routing.Router[2]
      Navigating to component dotnet_bug.Pages.MyComponent in response to path 'project/asdasd/ruimte/fb6566f385ab4e11a27f3393bb22c8ff/bron/%21%40%23%24%25%5E%26%2A%28%29_%2B-%3D%5B%5D%7B%7D%5C%5C%7C%3B%27%3A%5C%22%3E%3F.%2F/bewerken' with base URI 'http://localhost:5110/'
dbug: Microsoft.AspNetCore.Components.Routing.Router[1]
      Displaying NotFound because path 'project/asdasd/ruimte/fb6566f385ab4e11a27f3393bb22c8ff/bron/!%40%23%24%25%5E%26*()_%2B-%3D[]%7B%7D//|%3B'%3A/%22%3E%3F.%2F/bewerken' with base URI 'http://localhost:5110/' does not match any component route
dbug: Microsoft.AspNetCore.Components.Routing.Router[1]
      Displaying NotFound because path 'project/asdasd/ruimte/fb6566f385ab4e11a27f3393bb22c8ff/bron/!%40%23%24%25%5E%26*()_%2B-%3D[]%7B%7D//|%3B'%3A/%22%3E%3F.%2F/bewerken' with base URI 'http://localhost:5110/' does not match any component route

Steps To Reproduce

Given a component with this route:

@page "/project/{projectCode}/ruimte/{publicAreaId}/bron/{sourceCode}/bewerken"

And URL:

/project/asdasd/ruimte/fb6566f385ab4e11a27f3393bb22c8ff/bron/%21%40%23%24%25%5E%26%2A%28%29_%2B-%3D%5B%5D%7B%7D%5C%5C%7C%3B%27%3A%5C%22%3E%3F.%2F/bewerken

The sourceCode part !@#$%^&*()_+-=[]{}\\|;':\">?./ is url-encoded.

Full repro: dotnet-bug.zip

Exceptions (if any)

No response

.NET Version

8.0.100

Anything else?

.NET 7.0:

.NET 8.0, identical code:

[TDroogers]

Sounds related to my bug #53138

[javiercn]

This is now fixed in main; we'll probably backport it to 8.0 in a future patch release. #53470

[mkArtakMSFT]

@Sebazzz did you by any chance try the fix out from the nightly build to see if this indeed has addressed the issue you were facing? It most probably did but would be nice to get confirmation.