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fallback-file doesn't work with Blazor webassembly #149

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pekspro opened this issue May 12, 2024 · 3 comments · May be fixed by #150
Open

fallback-file doesn't work with Blazor webassembly #149

pekspro opened this issue May 12, 2024 · 3 comments · May be fixed by #150
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@pekspro
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pekspro commented May 12, 2024 •
edited

Describe the bug
I'm trying to use fallback-file with a Blazor webassembly application. I get 404 when I'm loading URL:s that should return the fallback page.

This is related to #104.

To Reproduce
Steps to reproduce the behavior:

Create, publish and host a Blazor Webassembly application like this:

dotnet new create blazorwasm
dotnet publish
dotnet serve --port 5200 --directory bin/Release/net8.0/publish/wwwroot --fallback-file "bin/Release/net8.0/publish/wwwroot/index.html"

Navigate to http://localhost:5200/ and click on counter page. This works fine.

Now, navigate to http://localhost:5200/counter. 404 is returned, but the content in index.html was expected.

Logs

Starting server, serving bin\Release\net8.0\publish\wwwroot
Listening on:
  http://localhost:5200

Press CTRL+C to exit
info: Microsoft.AspNetCore.Hosting.Diagnostics[1]
      Request starting HTTP/1.1 GET http://localhost:5200/counter - -
info: Microsoft.AspNetCore.Routing.EndpointMiddleware[0]
      Executing endpoint 'Fallback {*path:nonfile}'
info: Microsoft.AspNetCore.Routing.EndpointMiddleware[1]
      Executed endpoint 'Fallback {*path:nonfile}'
info: Microsoft.AspNetCore.Hosting.Diagnostics[2]
      Request finished HTTP/1.1 GET http://localhost:5200/counter - - - 404 - text/html 10.6292ms
@pekspro pekspro added the bug label May 12, 2024
@pekspro
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pekspro commented May 12, 2024

I'm playing with the code and I think the correct way to the application should be:

dotnet serve --port 5200 --directory bin/Release/net8.0/publish/wwwroot --fallback-file index.html

But this will give me an error saying that index.html doesn't exists. I guess it looks in the current directory, not in the directory provided by the directory argument. Everything works if I remove the [FileExists] attribute on the FallbackFile property.

@pekspro pekspro linked a pull request May 12, 2024 that will close this issue
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@natemcmaster
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natemcmaster commented May 19, 2024 •
edited

Should we make the path relative to the value of --directory here?

https://github.com/natemcmaster/dotnet-serve/blob/fa21e93f390390cee5b6e5d440e9439a8b1b81f1/src/dotnet-serve/Startup.cs#L224C45-L224C66

@pekspro
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pekspro commented May 19, 2024

@natemcmaster, no, that is not necessary. It already uses works as it is :-) MapFallbackToFile is relative to the directory that is hosted as I understand it.

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Removes [FileExists] from FallbackFile pekspro/dotnet-serve
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