* Do not use deprecated QAbstractSocket::SocketError
* Do not use deprecated ::location
* Do not discard translation load return value
* Use static function calls where applicable
* Remove unused include
* Remove qt6 check
* Remove deprecated type()
* Remove qt6 check
* Use typeId instead of deprecated type
* clang-format fix
* Remove TCP entry point
Resolve#987
* Remove TCP entry point
* Servers that do not support WebSocket will be marked as `Legacy`
* Removal of TCP connection from the master will follow later.
* Tweaked error message