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Interceptors are used with both CXF clients and CXF servers. When a CXF client invokes a CXF server, there is an outgoing interceptor chain for the client and an incoming chain for the server. When the server sends the response back to the client, there is an outgoing chain for the server and an incoming one for the client. Additionally, in the case of SOAPFaults, a CXF web service will create a separate outbound error handling chain and the client will create an inbound error handling chain.
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The CXF distribution is shipped with a demo called configuration_interceptor which shows how to develop a user interceptor and configure the interceptor into its interceptor chain.
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In CXF, all the functionality of processing messages is done via interceptors. Thus, when debugging a message flow, you will come across a bunch of interceptors in the chain. Here is a list of some of the common interceptors and the functionality they provide. The source code for these interceptors (latest trunk version) can be viewed with this Fisheye queryis available on github.
Default JAX-WS Incoming interceptor chain (Server):
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