This has been observed once in 9 dev nightly testing.

Please refer to the test output below:

----------System.out:(684/25648)----------
server: ready
server: accepted
server: exception: javax.net.ssl.SSLProtocolException: ChangeCipherSpec message sequence violation
server: ready
server: exception: java.net.SocketException: socket closed
server: ready
server: exception: java.net.SocketException: Socket closed
server: ready
...
server: exception: java.net.SocketException: Socket closed
server: ready
server: exception: java.net.SocketException: Socket closed
server: ready
----------System.err:(11/757)----------
java.io.IOException: Connection aborted
	at java.net.http.PlainHttpConnection.shutdown(java.httpclient@9-ea/PlainHttpConnection.java:231)
	at java.net.http.PlainHttpConnection.asyncRead(java.httpclient@9-ea/PlainHttpConnection.java:252)
	at java.net.http.PlainHttpConnection$ReadEvent.handle(java.httpclient@9-ea/PlainHttpConnection.java:332)
	at java.net.http.HttpClientImpl$SelectorManager.handleEvent(java.httpclient@9-ea/HttpClientImpl.java:331)
	at java.net.http.HttpClientImpl$SelectorManager.run(java.httpclient@9-ea/HttpClientImpl.java:301)

JavaTest Message: Test threw exception: java.io.IOException: Connection aborted