Spring-RSocket: server memory overflow with request-response

[mostroverkhov]

Spring's RSocket server terminates with OutOfMemoryError if bad client sends
requests without reading responses from socket.

Trivial reproducer is at response-overflow using springboot 2.5.4

./server.sh, response_overflow.sh

[rstoyanchev]

Superseded by rsocket/rsocket-java#1065.