1 CONSOLE ERROR: line 15: WebSocket connection to 'ws://localhost:8880/invalid-masked-frames-from-server' failed: A server must not mask any frames that it sends to the client.
2 Test whether WebSocket aborts the connection when it receives an masked frames from server.
4 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
7 PASS onerror() was called
8 PASS closeEvent.wasClean is false
9 PASS successfullyParsed is true