Only complete the web socket future once (#9176)

dbc447b1 · Todd Volkert · GitHub · c6cd0bc3 · dbc447b1
Commit dbc447b1 authored Apr 04, 2017 by Todd Volkert Committed by GitHub Apr 04, 2017
Show whitespace changes
Inline Side-by-side

Showing with 2 additions and 1 deletion

flutter_platform.dart packages/flutter_tools/lib/src/test/flutter_platform.dart +2 -1

No files found.
--- a/packages/flutter_tools/lib/src/test/flutter_platform.dart
+++ b/packages/flutter_tools/lib/src/test/flutter_platform.dart
@@ -143,6 +143,7 @@ class _FlutterPlatform extends PlatformPlugin {
      final Completer<WebSocket> webSocket = new Completer<WebSocket>();
      server.listen(
        (HttpRequest request) {
+          if (!webSocket.isCompleted)
            webSocket.complete(WebSocketTransformer.upgrade(request));
        },
        onError: (dynamic error, dynamic stack) {