Related issue: #2179
Motivation:
Previous fix e71cbb9308bf8788e1e0fb8db99766d89156386d was not enough.
Modifications:
- Add more test cases for WebSocket handshake
- Fix a bug in HttpMessageDecoder where it does not always enter
UPGRADED state
- Fix incorrect decoder replacement logic in WebSocketClientHandshaker
implementations
- Add WebSocketClientHandshaker.replaceDecoder() as a helper
Result:
We never lose the first WebSocket frame for all WebSocket protocol
versions.
788d3dea42