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Middleware skipped when UseEndpoints is called multiple times

See original GitHub issue

Describe the bug

Middleware between two calls to configure endpoint routing using app.UseEndpoints(...) is never executed.

Expected: Looking at this startup code, I would expect SetUser() middleware to be executed before MVC controller. image

Actual: The breakpoint is never hit.

To Reproduce

Create a new ASP.NET Core 3.1 MVC web application. Replace Startup.cs with this: https://gist.github.com/jussimattila/047ab4936f943ed8b0f2a6574c2525a5

Set a breakpoint to the middleware, confirm it is not executed.

Further technical details

  • ASP.NET Core 3.1
C:\Users\Jussi>dotnet --info
.NET Core SDK (reflecting any global.json):
 Version:   3.1.100
 Commit:    cd82f021f4

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.18362
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\3.1.100\

Host (useful for support):
  Version: 3.1.0
  Commit:  65f04fb6db
  • Visual Studio 2019 16.4

Issue Analytics

  • State:closed
  • Created 4 years ago
  • Reactions:1
  • Comments:13 (8 by maintainers)

github_iconTop GitHub Comments

1reaction
rizicommented, May 8, 2020

@mkArtakMSFT we have exactly the same problem, please “allow” to call app.UseEndPoints multiple times and execute all configured middlewares. br

1reaction
khellangcommented, Apr 23, 2020

@mkArtakMSFT This issue isn’t a question or a discussion. This is a bug 🐛 🙈

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