Clarify the code to enter admin mode

cmd/ck-client/ck-client.go

@@ -124,18 +124,25 @@ func main() {
 			return
 		}
 
-		log.Printf("Starting standalone mode. Listening for ss on %v:%v\n", localHost, localPort)
+		log.Println("Starting standalone mode")
 	}
 
+	if *isAdmin {
+		sta := client.InitState("", "", "", "", time.Now, 0)
+		err := sta.ParseConfig(pluginOpts)
+		if err != nil {
+			log.Fatal(err)
+		}
+		err = adminPrompt(sta)
+		if err != nil {
+			log.Println(err)
+		}
+		return
+	}
 	// sessionID is usergenerated. There shouldn't be a security concern because the scope of
 	// sessionID is limited to its UID.
 	rand.Seed(time.Now().UnixNano())
-	var sessionID uint32
+	sessionID := rand.Uint32()
-	if *isAdmin {
-		sessionID = 0
-	} else {
-		sessionID = rand.Uint32()
-	}
 
 	// opaque is used to generate the padding of session ticket
 	sta := client.InitState(localHost, localPort, remoteHost, remotePort, time.Now, sessionID)
@@ -144,14 +151,6 @@ func main() {
 		log.Fatal(err)
 	}
 
-	if *isAdmin {
-		err = adminPrompt(sta)
-		if err != nil {
-			log.Println(err)
-		}
-		return
-	}
-
 	if sta.SS_LOCAL_PORT == "" {
 		log.Fatal("Must specify localPort")
 	}
@@ -184,6 +183,7 @@ func main() {
 	wg.Wait()
 
 	listener, err := net.Listen("tcp", sta.SS_LOCAL_HOST+":"+sta.SS_LOCAL_PORT)
+	log.Println("Listening for ss on " + sta.SS_LOCAL_HOST + ":" + sta.SS_LOCAL_PORT)
 	if err != nil {
 		log.Fatal(err)
 	}

internal/multiplex/switchboard.go

@@ -128,6 +128,7 @@ func (sb *switchboard) removeConn(closing *connEnclave) {
 	sb.cesM.Unlock()
 }
 
+// actively triggered by session.Close()
 func (sb *switchboard) shutdown() {
 	for _, ce := range sb.ces {
 		ce.remoteConn.Close()