----------System.out:(11/180)----------
Sender starts
Main sleep 1000
Sender ends
Other starts: sleep 5000
Main continue
Main sleep 15000
Closer starts
Other opening socket
Other ends
Main closing serversocket
Main ends
----------System.err:(14/661)----------

JavaTest Message: Test complete.


JavaTest Message: Problem cleaning up the following threads:
Thread-17
  at java.base@12-internal/java.net.PlainSocketImpl.socketClose0(Native Method)
  at java.base@12-internal/java.net.AbstractPlainSocketImpl.socketPreClose(AbstractPlainSocketImpl.java:706)
  at java.base@12-internal/java.net.AbstractPlainSocketImpl.close(AbstractPlainSocketImpl.java:569)
  at java.base@12-internal/java.net.SocksSocketImpl.close(SocksSocketImpl.java:1082)
  at java.base@12-internal/java.net.Socket.close(Socket.java:1495)
  at LingerTest$Closer.run(LingerTest.java:65)
  at java.base@12-internal/java.lang.Thread.run(Thread.java:835)

result: Error. Error while cleaning up threads after test


test result: Error. Error while cleaning up threads after test