logging url of service

main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"flag"
+	"fmt"
 	"log"
 	"math/rand"
 	"net/http"
@@ -13,7 +14,7 @@ import (
 
 const MAX = 12
 
-var addr = flag.String("addr", ":8000", "address I'll listen on.")
+var port = flag.Int("port", 8000, "listen on this port")
 
 var store = sessions.NewCookieStore([]byte(os.Getenv("MMG_SECRET_KEY")))
 var statics map[string][]byte
@@ -40,7 +41,14 @@ func main() {
 		"/reset/",
 		reset,
 	)
-	if err := http.ListenAndServe(*addr, nil); err != nil {
+
+	hostname, err := os.Hostname()
+	if err != nil {
+		log.Fatal("problem getting hostname:", err)
+	}
+	log.Printf("serving at: http://%s:%d/", hostname, *port)
+
+	if err := http.ListenAndServe(fmt.Sprintf(":%d", *port), nil); err != nil {
 		log.Fatal("ListenAndServe:", err)
 	}
 }