update

bin/config.dart

@@ -28,6 +28,9 @@ ProxyConfig parseProxyConfig(String config) {
   final jsonConfig = json.decode(config);
 
   final managementConfig = jsonConfig['managementConfig'];
+  if (managementConfig != null) {
+    final managementListen = managementConfig['listen'];
+  }
   print(managementConfig);
 
   // print(jsonConfig);
@@ -42,7 +45,7 @@ HostAndPort parseHostAndPort(String hnp) {
   var host = hnp.substring(0, indexOfC);
   final port = int.parse(hnp.substring(indexOfC + 1));
   if (host.isEmpty) {
-    host = "0.0.0.0";
+    host = '0.0.0.0';
   }
   return HostAndPort(host: host, port: port);
 }