NullPointerException thrown by Sandesha1 Client when a nack is received in SequenceAcknowledgement

[Sadhana Jain]

Hi,   When sandesha sync ping client receives a nack in SequenceAcknowledgement, it throws an NPE:   java.lang.NullPointerException             at org.apache.axis.message.addressing.EndpointReferenceType.shallowCopy(EndpointReferenceType.java:132)             at org.apache.axis.message.addressing.EndpointReferenceType.<init>(EndpointReferenceType.java:127)             at org.apache.axis.message.addressing.EndpointReferenceType.<init>(EndpointReferenceType.java:113)             at org.apache.axis.message.addressing.EndpointReference.<init>(EndpointReference.java:77)             at org.apache.axis.message.addressing.From.<init>(From.java:63)             at org.apache.axis.message.addressing.AddressingHeaders.setFrom(AddressingHeaders.java:467)             at org.apache.sandesha.EnvelopeCreator.createServiceRequestEnvelope(EnvelopeCreator.java:256)             at org.apache.sandesha.server.SenderWorker.sendServiceRequest(SenderWorker.java:346)             at org.apache.sandesha.server.SenderWorker.sendMessage(SenderWorker.java:213)             at org.apache.sandesha.server.SenderWorker.run(SenderWorker.java:145)             at java.lang.Thread.run(Thread.java:534)   The nack message is as follows:   <?xml version="1.0" encoding="UTF-8"?>    <S11:Envelope xmlns:S11="http://schemas.xmlsoap.org/soap/envelope/">       <S11:Header>          <NS1:SequenceAcknowledgement xmlns:NS1="http://schemas.xmlsoap.org/ws/2005/02/rm">             <NS1:Identifier>uuid:8F477FA5-AEB0-A692-D65C-F091FA9732D6</NS1:Identifier>             <NS1:Nack>1</NS1:Nack>          </NS1:SequenceAcknowledgement>          <wsa:Action xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">http://schemas.xmlsoap.org/ws/2005/02/rm/SequenceAcknowledgement</wsa:Action>          <wsa:To xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous</wsa:To>          <wsa:MessageID xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">uuid:8DC2C8B9-6B08-CC43-EDC5-2B76E6A02649</wsa:MessageID>       </S11:Header>       <S11:Body></S11:Body>    </S11:Envelope>   Do you have any idea why NPE could be thrown? I am using Sandesha1.   Thanks, Sadhana