I use SMACK API in Oracle Java Source for connect to OpenFire server. When a create new connection I received next Exception:
java.net.SocketException: Unsupported VC socket option
at java.net.PlainSocketImpl.socketSetOption(Native Method)
at java.net.PlainSocketImpl.setOption(PlainSocketImpl.java:240)
at java.net.Socket.setKeepAlive(Socket.java:1087)
at com.sun.net.ssl.internal.ssl.BaseSSLSocketImpl.setKeepAlive(DashoA6275)
at org.jivesoftware.smack.XMPPConnection.proceedTLSReceived(XMPPConnection.java:11 17)
at org.jivesoftware.smack.PacketReader.parsePackets(PacketReader.java:327)
at org.jivesoftware.smack.PacketReader.access$000(PacketReader.java:43)
at org.jivesoftware.smack.PacketReader$1.run(PacketReader.java:63)
On some Oracle DB Server everything working without any exception and my client establish connection successfully.