The test fails intermittently with the following exception:

java.net.SocketException: Address already in use
at java.net.PlainSocketImpl.socketListen(java.base@9-ea/Native Method)
at java.net.AbstractPlainSocketImpl.listen(java.base@9-ea/AbstractPlainSocketImpl.java:449)
at java.net.ServerSocket.bind(java.base@9-ea/ServerSocket.java:377)
at java.net.ServerSocket.<init>(java.base@9-ea/ServerSocket.java:238)
at java.net.ServerSocket.<init>(java.base@9-ea/ServerSocket.java:182)
at javax.net.ssl.SSLServerSocket.<init>(java.base@9-ea/SSLServerSocket.java:136)
at sun.security.ssl.SSLServerSocketImpl.<init>(java.base@9-ea/SSLServerSocketImpl.java:116)
at sun.security.ssl.SSLServerSocketFactoryImpl.createServerSocket(java.base@9-ea/SSLServerSocketFactoryImpl.java:79)
at SessionCacheSizeTests.doServerSide(SessionCacheSizeTests.java:112)
at SessionCacheSizeTests$1.run(SessionCacheSizeTests.java:429)
java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(java.base@9-ea/Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(java.base@9-ea/AbstractPlainSocketImpl.java:400)
at java.net.AbstractPlainSocketImpl.connectToAddress(java.base@9-ea/AbstractPlainSocketImpl.java:243)
at java.net.AbstractPlainSocketImpl.connect(java.base@9-ea/AbstractPlainSocketImpl.java:225)
at java.net.SocksSocketImpl.connect(java.base@9-ea/SocksSocketImpl.java:402)
at java.net.Socket.connect(java.base@9-ea/Socket.java:591)
at sun.security.ssl.SSLSocketImpl.connect(java.base@9-ea/SSLSocketImpl.java:650)
at sun.security.ssl.SSLSocketImpl.<init>(java.base@9-ea/SSLSocketImpl.java:417)
at sun.security.ssl.SSLSocketFactoryImpl.createSocket(java.base@9-ea/SSLSocketFactoryImpl.java:88)
at SessionCacheSizeTests.doClientSide(SessionCacheSizeTests.java:215)
at SessionCacheSizeTests.startClient(SessionCacheSizeTests.java:474)
at SessionCacheSizeTests.<init>(SessionCacheSizeTests.java:351)
at SessionCacheSizeTests.main(SessionCacheSizeTests.java:316)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(java.base@9-ea/Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(java.base@9-ea/NativeMethodAccessorImpl.java:62)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(java.base@9-ea/DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(java.base@9-ea/Method.java:531)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:110)
at java.lang.Thread.run(java.base@9-ea/Thread.java:843)
Caused by: java.net.SocketException: Address already in use
at java.net.PlainSocketImpl.socketListen(java.base@9-ea/Native Method)
at java.net.AbstractPlainSocketImpl.listen(java.base@9-ea/AbstractPlainSocketImpl.java:449)
at java.net.ServerSocket.bind(java.base@9-ea/ServerSocket.java:377)
at java.net.ServerSocket.<init>(java.base@9-ea/ServerSocket.java:238)
at java.net.ServerSocket.<init>(java.base@9-ea/ServerSocket.java:182)
at javax.net.ssl.SSLServerSocket.<init>(java.base@9-ea/SSLServerSocket.java:136)
at sun.security.ssl.SSLServerSocketImpl.<init>(java.base@9-ea/SSLServerSocketImpl.java:116)
at sun.security.ssl.SSLServerSocketFactoryImpl.createServerSocket(java.base@9-ea/SSLServerSocketFactoryImpl.java:79)
at SessionCacheSizeTests.doServerSide(SessionCacheSizeTests.java:112)
at SessionCacheSizeTests$1.run(SessionCacheSizeTests.java:429)