Golang HTTP File Server With DELETE

httpFS.go

package main

import (
    "net/http"
    "fmt"
    "os"
)

func main() {
    mux := http.NewServeMux()
    fs := http.FileServer(http.Dir("/home/ravir/tmp/"))
    mux.Handle("/", mw("/home/ravir/tmp/", fs))
    http.ListenAndServe("localhost:11223", mux)
}

func mw (dirprefix string, next http.Handler) http.Handler {
    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        if r.Method == "DELETE" {
            file2Del := dirprefix+r.URL.String()
            fmt.Println("Deleting file:", file2Del)
            os.Remove(file2Del)
            return
        }
        next.ServeHTTP(w, r)
    })
}