1. Dart
2. dart:html
3. WebSocket
4. protocol property

WebSocket class

1. Constructors
2. WebSocket
3. Properties
4. binaryType
5. bufferedAmount
6. extensions
7. hashCode
8. on
9. onClose
10. onError
11. onMessage
12. onOpen
13. protocol
14. readyState
15. runtimeType
16. url
17. Methods
18. addEventListener
19. close
20. dispatchEvent
21. noSuchMethod
22. removeEventListener
23. send
24. sendBlob
25. sendByteBuffer
26. sendString
27. sendTypedData
28. toString
29. Operators
30. operator ==
31. Static properties
32. supported
33. Constants
34. CLOSED
35. closeEvent
36. CLOSING
37. CONNECTING
38. errorEvent
39. messageEvent
40. OPEN
41. openEvent

String get protocol native;