I am confused by a problem that is i am trying to connect the serve, i can select security setting dialog, i select None ,but when i click OK, an error happend, the message is “Could not connect to the server Error = null”, and my server throws message as follow :

INFO org.opcfoundation.ua.transport.tcp.nio.OpcTcpServerSecureChannel – SecureChannel opened; SecurityToken(Id=1, secureChannelId=29, creationTime=May 17, 2016 4:10:43 PM, lifetime=3600000)
[Selector] INFO org.opcfoundation.ua.utils.asyncsocket.AsyncSocketImpl – AsyncSocketInputStream.close(): unexpected untriggered monitor
[Selector] INFO org.opcfoundation.ua.transport.tcp.nio.OpcTcpServerSecureChannel – Secure Channel closed, token=SecurityToken(Id=1, secureChannelId=29, creationTime=May 17, 2016 4:10:43 PM, lifetime=3600000)
[Selector] INFO org.opcfoundation.ua.transport.endpoint.AbstractServerSecureChannel – Channel closed: Id=29
[Non-Blocking-Work-Executor-2] INFO org.opcfoundation.ua.transport.tcp.nio.OpcTcpServerConnection – Error in handleChunk
org.opcfoundation.ua.common.ServiceResultException: Bad_TcpSecureChannelUnknown (code=0x807F0000, description=”The SecureChannelId and/or TokenId are not currently in use.”)
at org.opcfoundation.ua.transport.tcp.nio.OpcTcpServerConnection.handleSymmChunk(Unknown Source)
at org.opcfoundation.ua.transport.tcp.nio.OpcTcpServerConnection.handleChunk(Unknown Source)
at org.opcfoundation.ua.transport.tcp.nio.OpcTcpServerConnection$3.onStateTransition(Unknown Source)
at org.opcfoundation.ua.transport.tcp.nio.OpcTcpServerConnection$3.onStateTransition(Unknown Source)
at org.opcfoundation.ua.utils.AbstractState$1.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
[Non-Blocking-Work-Executor-3] INFO org.opcfoundation.ua.transport.tcp.nio.OpcTcpServer – OpcTcpServer(opc.tcp(/127.0.0.1:52520, (opc.tcp://zy-vm:52520 [[http://opcfoundation.org/UA/SecurityPolicy#None,None]])(opc.tcp://zy-vm:52520/OPCUA/MideaOPCUAServer [[http://opcfoundation.org/UA/SecurityPolicy#None,None], [http://opcfoundation.org/UA/SecurityPolicy#Basic128Rsa15,Sign], [http://opcfoundation.org/UA/SecurityPolicy#Basic128Rsa15,SignAndEncrypt], [http://opcfoundation.org/UA/SecurityPolicy#Basic256,Sign], [http://opcfoundation.org/UA/SecurityPolicy#Basic256,SignAndEncrypt]]))opc.tcp(/10.177.11.84:52520, (opc.tcp://zy-vm:52520 [[http://opcfoundation.org/UA/SecurityPolicy#None,None]])(opc.tcp://zy-vm:52520/OPCUA/MideaOPCUAServer [[http://opcfoundation.org/UA/SecurityPolicy#None,None], [http://opcfoundation.org/UA/SecurityPolicy#Basic128Rsa15,Sign], [http://opcfoundation.org/UA/SecurityPolicy#Basic128Rsa15,SignAndEncrypt], [http://opcfoundation.org/UA/SecurityPolicy#Basic256,Sign], [http://opcfoundation.org/UA/

how i can do to solve this problem????