I am using the net/http standard library package for subrouting in Golang while developing a simple API. However, I encountered a problem. I have user routes for registration with POST /v1/users/. When I try to send a request to POST /v1/users, I get a 404 page not found error. I need to add a trailing / to make it work. I believe it should work with both trailing / and without trailing /. If you can help me fix this, it would be great.

Here is my main.go:

package main

import (
    "log/slog"
    "net/http"
    "os"

    routes "github.com/rohitvpatil0810/go-url-shortener-api/api/v1"
    "github.com/rohitvpatil0810/go-url-shortener-api/internal/config"
    "github.com/rohitvpatil0810/go-url-shortener-api/pkg/logger"
)

func main() {
    config, err := config.LoadConfig()
    if err != nil {
        slog.Error("Error loading config", "error", err)
        os.Exit(1)
    }

    router := routes.RegisterV1Routes()
    server := http.Server{
        Addr:    ":" + config.Port,
        Handler: router,
    }

    logger.Logger.Info("Starting server", slog.String("port", config.Port))
    server.ListenAndServe()
}

api/v1.go:

package routes

import "net/http"

func RegisterV1Routes() http.Handler {
    router := http.NewServeMux()

    router.Handle("/v1/", http.StripPrefix("/v1", RegisterRoutes()))

    return router
}

api/routes.go:

package routes

import "net/http"

func RegisterRoutes() http.Handler {
    router := http.NewServeMux()

    router.Handle("/users/", http.StripPrefix("/users", RegisterUserRoutes()))

    return router
}

api/user_routes.go:

package routes

import "net/http"

func RegisterUserRoutes() http.Handler {
    router := http.NewServeMux()

    router.HandleFunc("POST /", func(w http.ResponseWriter, r *http.Request) {
        w.Write([]byte("<p>POST /users</p>"))
    })
    router.HandleFunc("POST /login", func(w http.ResponseWriter, r *http.Request) {
        w.Write([]byte("<p>POST /users/login</p>"))
    })
    router.HandleFunc("POST /logout", func(w http.ResponseWriter, r *http.Request) {
        w.Write([]byte("<p>POST /users/logout</p>"))
    })

    return router
}

According to this documentation, it should redirect POST /v1/users to POST /v1/users/. Am I right or wrong?