CXF - catching/handling HTTP exceptions - cxf

Question

This is rather a basic cxf usage question. How/where can we catch the actual HTTP exception/error. I kind of followed the Interceptor/MessageObserver concept but could not capture the HTTP error using them.
I see this error in the log4j log file.
Caused by: org.apache.cxf.transport.http.HTTPException: HTTP response
'401: Unauthorized' when communicating with http://10.107.172.79/test/_vti_bin/lists.asmx
at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleResponseInternal(HTTPConduit.java:1502)
at org.apache.cxf.transpot.http.HTTPConduit$WrappedOutputStream.handleResponse(HTTPConduit.java:1448)
at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.close(HTTPConduit.java:1356)
at org.apache.cxf.transport.AbstractConduit.close(AbstractConduit.java:56)
at org.apache.cxf.transport.http.HTTPConduit.close(HTTPConduit.java:614)
at org.apache.cxf.interceptor.MessageSenderInterceptor$MessageSenderEndingInterceptor.handleMessage(MessageSenderInterceptor.java:62)
... 9 more
Only javax.xml.ws.WebServiceException with "Could not send Message."
message is thrown while calling the service
try{
GetListCollectionResult result = port.getListCollection();
}catch (javax.xml.ws.WebServiceException excep){
}
This is how we call the service.
To provide NTLM credentials:
Authenticator.setDefault( extended class of Authenticator);
Create the service.
JaxWsProxyFactoryBean factory = new JaxWsProxyFactoryBean();
factory.setServiceClass(ListsSoap.class);
factory.setAddress(list_url);
ListsSoap port = (ListsSoap) factory.create();
Update the conduit.
..
Client client = ClientProxy.getClient(port);
HTTPConduit http = (HTTPConduit) client.getConduit();
HTTPClientPolicy httpClientPolicy = new HTTPClientPolicy();
httpClientPolicy.setConnectionTimeout(36000);
httpClientPolicy.setAllowChunking(false);
http.setClient(httpClientPolicy);
Call service and get the result.
GetListCollectionResult result = port.getListCollection();

Answer 1

Nevermind, I found the answer in the CXF mailing list.
excep.getCause()
gives access to the underlying exception, in my case it is the HTTP Transport exception.