os.Interrupt does not respond to Ctrl+C after fiber get some requests

[boskiv]

Required check list:

• I'm gonna mark the checkboxes like this.
• I didn't find in the repository's issues section similar bug.
• I understand, this is Open Source and not-for-profit product.
• This is not about third-party project, framework, package or technology.

My environment:

• OS (uname -a): Darwin us2-al-004.local 21.1.0 Darwin Kernel Version 21.1.0: Wed Oct 13 17:33:23 PDT 2021; root:xnu-8019.41.5~1/RELEASE_X86_64 x86_64 (macOS Monterey 12.0.1 (21A559))
• Golang (go version): go version go1.17.2 darwin/amd64

Describe the bug:

Steps to reproduce the behavior:

1. Run App with StartServerWithGracefulShutdown
2. Get few requests
3. Press Ctrl+C
4. App does not exit

Expected behavior:

App should respond to Ctrl+C

Screenshots:

Additional context:
If I run Ctrl+C before any requests are served, it works as expected

[boskiv]

FYI, this example also has an issue in my env https://github.com/gofiber/recipes/blob/master/graceful-shutdown/main.go

[boskiv]

After some experiments around ab and curl, i have idea that connection is holding by browser. After I close a browser server immediately exit. More then, time is different between firefox and chrome browsers. Firefox closing connection faster.
So I think you can close this issue, because gracefull exit works as expected.

[koddr]

Hi, @boskiv

Yes it is. Graceful shot down doesn't close connection, if any client idle. If you don't want to, you can switch to dev in your dot env file.