Minor Description
I think with Firefox's latest Quantum engine I started to see frequent IOExceptions caused by 'client connection abort'.
So we might try to suppress java.io.IOException of kind 'An established connection was aborted by the software in your host machine'
1) the TCP protocol (by design) does not provide a means to check, whether a connection has been closed by the client
2) the exception thrown and the exception message text are specific to the servlet-engine implementation