go. Why does the request not give control to the Handle?

Question

go

A request comes in, but the handle to the function is not passed to process it.
It doesn't even mark as not found the request url.
https://habrahabr.ru/post/202584/ Installed Graceful restart, I
use gin as a shell. This is how I create a custom server:

router := gin.New()
  router.Use(gin.Recovery())

  s := &http.Server{
    Addr:           ":9999",
    Handler:        router,
    ReadTimeout:    45 * time.Second,
    WriteTimeout:   45 * time.Second,
    MaxHeaderBytes: 1 << 20,
  }
        . . .
  err = s.Serve(listener1)

Example:
If I often send requests to certain URLs, then soon they stop working and just redirect me to /.
I assume that the matter is in the graceful server, and due to some hidden error, the requests go somewhere in the wrong place.
What could be the problem?

Answer 1

This is not the first time something has been written about this problem in gin on a toaster. I suppose that 3 different people cannot make the same incomprehensible mistake in a short period of time. I think the problem is in gin itself.