[CXF-5942] Non-blocking WS call with CXF

• Type: Wish
• Status: Closed
• Priority: Minor
• Resolution: Not A Problem
• Affects Version/s: 3.0.0-milestone1
• Fix Version/s: Invalid
• Component/s: Transports
• Labels: non-blocking
• Estimated Complexity: Moderate
• Assignee: Daniel Kulp
• Reporter: Bence Takács
• Created: 12/Aug/14 15:57
• Updated: 14/Aug/14 15:54
• Resolved: 14/Aug/14 15:47

Description

It is not clear which are the use cases when one can use asynchronous client calls. The possible use cases would be:

• server-side implemented callback transport
• server-side implemented polling transport
• client-side only callback using non-blocking IO

However http.asyncclient supports all of them, I see no sign of CXF supporting the last one. Is there a way of calling a server this way?

Using the configuration below I tried to call a WS this way, but CXF is always looking for async binding on the server side (javax.xml.ws.WebServiceException: Could not find wsdl:binding operation info for web method getDataFromWebService_Async).

Client configuration:

<jaxws:client id="client"
serviceClass="my.sample.SampleWebService"
address="http://localhost:8080/sample-ws-cxf/SampleWebService">
<jaxws:properties>
<entry key="javax.xml.ws.client.connectionTimeout" value="10" />
<entry key="javax.xml.ws.client.receiveTimeout" value="11000" />
<entry key="org.apache.cxf.transport.http.async.usePolicy" value="ALWAYS" />
<entry key="org.apache.cxf.transport.http.async.ioThreadCount" value="2" />
</jaxws:properties>
</jaxws:client>

code:

client.getDataFromWebService_Async("" + id.getAndIncrement(), new AsyncHandler<Person>() {
    @Override
    public void handleResponse(Response<Person> resp) {
        Person person;
        try {
            person = resp.get();
            ...
        } catch (InterruptedException | ExecutionException e) {
            ...
        }
    }
});

If I log out the conduit, it tells that it is: org.apache.cxf.transport.http.asyncclient.AsyncHTTPConduit ( log.info(ClientProxy.getClient(client).getConduit().getClass().getName()); )

I'm using cxf 3.0.1, and httpasyncclient version 4.0.1 with spring 3.2.2.RELEASE