Go Standard Library Cookbook

How to do it...

1. Open the console and create the folder chapter09/recipe11.
2. Navigate to the directory.
3. Create the file gracefully.go with the following content:

        package main        import (          "context"          "fmt"          "log"          "net/http"          "os"          "os/signal"          "time"        )        func main() {          mux := http.NewServeMux()          mux.HandleFunc("/",func(w http.ResponseWriter, r *http.Request){            fmt.Fprintln(w, "Hello world!")          })          srv := &http.Server{Addr: ":8080", Handler: mux}          go func() {            if err := srv.ListenAndServe(); err != nil {              log.Printf("Server error: %s\n", err)            }          }()          log.Println("Server listening on : " + srv.Addr)          stopChan := make(chan os.Signal)          signal.Notify(stopChan, os.Interrupt)          <-stopChan // wait for SIGINT          log.Println("Shutting down server...") ctx, cancel := context.WithTimeout( ...