javax/net/ssl/DTLS/PacketLossRetransmission.java failed: SocketTimeoutException: Receive timed out

Client: Handshake finished, status is NEED_UNWRAP_AGAIN
Exception in ClientCallable.call():
java.lang.Exception: Handshake finished, but handshake session is not null
at DTLSOverDatagram.handshake(DTLSOverDatagram.java:253)
at DTLSOverDatagram.doClientSide(DTLSOverDatagram.java:120)
at DTLSOverDatagram$ClientCallable.call(DTLSOverDatagram.java:617)
at DTLSOverDatagram$ClientCallable.call(DTLSOverDatagram.java:611)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception on client side:
java.util.concurrent.ExecutionException: java.lang.Exception: Handshake finished, but handshake session is not null
at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
at DTLSOverDatagram.runTest(DTLSOverDatagram.java:560)
at PacketLossRetransmission.main(PacketLossRetransmission.java:90)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.Exception: Handshake finished, but handshake session is not null
at DTLSOverDatagram.handshake(DTLSOverDatagram.java:253)
at DTLSOverDatagram.doClientSide(DTLSOverDatagram.java:120)
at DTLSOverDatagram$ClientCallable.call(DTLSOverDatagram.java:617)
at DTLSOverDatagram$ClientCallable.call(DTLSOverDatagram.java:611)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
... 1 more
Exception on server side:
java.util.concurrent.ExecutionException: java.net.SocketTimeoutException: Receive timed out
at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
at DTLSOverDatagram.runTest(DTLSOverDatagram.java:570)
at PacketLossRetransmission.main(PacketLossRetransmission.java:90)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.net.SocketTimeoutException: Receive timed out
at java.base/sun.nio.ch.DatagramChannelImpl.trustedBlockingReceive(DatagramChannelImpl.java:703)
at java.base/sun.nio.ch.DatagramChannelImpl.blockingReceive(DatagramChannelImpl.java:633)
at java.base/sun.nio.ch.DatagramSocketAdaptor.receive(DatagramSocketAdaptor.java:240)
at java.base/java.net.DatagramSocket.receive(DatagramSocket.java:700)
at DTLSOverDatagram.receiveAppData(DTLSOverDatagram.java:325)
at DTLSOverDatagram.doServerSide(DTLSOverDatagram.java:103)
at DTLSOverDatagram$ServerCallable.call(DTLSOverDatagram.java:590)
at DTLSOverDatagram$ServerCallable.call(DTLSOverDatagram.java:584)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
... 1 more