Customize admin endpoint address with -listen flag

This is a temporary holdover for development purposes

cmd/run.go

@@ -1,6 +1,7 @@
 package caddycmd
 
 import (
+	"flag"
 	"log"
 
 	"bitbucket.org/lightcodelabs/caddy2"
@@ -8,14 +9,18 @@ import (
 
 // Main executes the main function of the caddy command.
 func Main() {
-	addr := ":1234" // TODO: for dev only
-	err := caddy2.StartAdmin(addr)
+	flag.Parse()
+
+	err := caddy2.StartAdmin(*listenAddr)
 	if err != nil {
 		log.Fatal(err)
 	}
 	defer caddy2.StopAdmin()
 
-	log.Println("Caddy 2 admin endpoint listening on", addr)
+	log.Println("Caddy 2 admin endpoint listening on", *listenAddr)
 
 	select {}
 }
+
+// TODO: for dev only
+var listenAddr = flag.String("listen", ":1234", "The admin endpoint listener address")

modules/caddytls/standardstek/stek.go

@@ -23,7 +23,7 @@ type standardSTEKProvider struct {
 
 // Initialize sets the configuration for s and returns the starting keys.
 func (s *standardSTEKProvider) Initialize(config *caddytls.SessionTicketService) ([][32]byte, error) {
-	// keep a reference to the config, we'll need when rotating keys
+	// keep a reference to the config; we'll need it when rotating keys
 	s.stekConfig = config
 
 	itvl := time.Duration(s.stekConfig.RotationInterval)