package main import ( "fmt" "sync" "github.com/codegangsta/negroni" "github.com/tylerb/graceful" ) func main() { var wg sync.WaitGroup wg.Add(3) go func() { n := negroni.New() fmt.Println("Launching server on :3000") graceful.Run(":3000", 0, n) fmt.Println("Terminated server on :3000") wg.Done() }() go func() { n := negroni.New() fmt.Println("Launching server on :3001") graceful.Run(":3001", 0, n) fmt.Println("Terminated server on :3001") wg.Done() }() go func() { n := negroni.New() fmt.Println("Launching server on :3002") graceful.Run(":3002", 0, n) fmt.Println("Terminated server on :3002") wg.Done() }() fmt.Println("Press ctrl+c. All servers should terminate.") wg.Wait() }