neimadTL

updates code school url when protocol is missing

1

tries with https first if possible then http.

Update custom errors with Exception#full_message

5

## What was the end-user or developer problem that led to this PR? Not an issue per se but more of an enhancement related to issue #8067 ## What is...

Move handleEvent to WebSocketEventHandler

2

For readability reason the handleEvent function has been moved `WebSocketCoreImpl` to `WebSocketEventHandler`. The function could be refactored into smaller functions later on. Tests still need to be added. Related to...