There workaround for a servlet implementation lower then 3 can be removed.
After we migrated from ESH to openHAB Core we could set servlet >= 3 as a requirement.
Signed-off-by: Markus Rathgeb <maggu2810@gmail.com>
We should disable the compression regardless if servlet 3 is used or
not. It does not matter which servlet version is used, the client should
receive the messages as soon as possible without compression or
buffering.
You can identify the lost SSE feature as soon as you enable the usage of
Jetty's GzipHandler.
Signed-off-by: Markus Rathgeb <maggu2810@gmail.com>