From 49494addfaaf4a6cb1abe86df5d3fa92ec9930df Mon Sep 17 00:00:00 2001
From: Zou Nengren <zounengren@cmss.chinamobile.com>
Date: Thu, 24 Jan 2019 02:12:34 +0800
Subject: [PATCH] add default port for dart app (#792)

---
 serving/samples/helloworld-dart/bin/server.dart | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/serving/samples/helloworld-dart/bin/server.dart b/serving/samples/helloworld-dart/bin/server.dart
index a431c33f0..d59ac0e79 100644
--- a/serving/samples/helloworld-dart/bin/server.dart
+++ b/serving/samples/helloworld-dart/bin/server.dart
@@ -5,7 +5,7 @@ import 'package:shelf/shelf_io.dart';
 
 void main() {
   // Find port to listen on from environment variable.
-  var port = int.tryParse(Platform.environment['PORT']);
+  var port = int.tryParse(Platform.environment['PORT']) ?? 8080;
   
   // Read $TARGET from environment variable.
   var target = Platform.environment['TARGET'] ?? 'World';