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Asynchronous calls using JAX-WS
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created by <a href="https://community.jboss.org/people/daniel.cote.qc.ca">Daniel Cote</a> in <i>JBoss Web Services</i> - <a href="https://community.jboss.org/message/803107#803107">View the full discussion</a>
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<div class="jive-rendered-content"><p>The context.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>An "in-container" WebService issues an asynchronous call to another Webservice.</p><p>My program works correctly... I just want to clarify a technical aspect.</p><p>In using JbossFinal7.1.1 and  <strong>jbossws-cxf-4.1.1.Final.</strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>It seems that the cxf stack has an 'odd' behavior, comparing to what I'm used to see.  In an async call, the invoker is not supposed to get any answer from the outgoing call: the invokee will send the answer to the address specified in the '<span style="font-family: courier new,courier; font-size: 8pt;">ReplyTo' </span>URL conveyed in the soap header.</p><p>The executing stack has to figured out that the receiver receives the payload, and that's it!  </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>In my previous experiences, with other AppServer, I never saw a "payload" sent back..</p><p>I was a bit confused to see an answer coming from the invokee...  Here the log...</p><p>---------------------------------------------------------------------------------------------</p><p>Here, we're in the in-container WebService...</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: courier new,courier; font-size: 8pt;">22:40:18,358 INFO (EJB default - 58) org.apache.cxf.service.factory.ReflectionServiceFactoryBean.buildServiceFromClass Creating Service {urn:ihe:iti:xds-b:2007}DocumentRegistry_Service from class org.apache.cxf.jaxws.support.DummyImpl</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Here, just before the call (extract from the code) to the other WebService...</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><table><tbody><tr><td style=";"><br/></td><td style=";"><br/></td><td style=";"><br/></td><td style=";"><br/></td><td style=";"><br/></td><td style=";">logger.logic("invokeOneWay called...");</td></tr><tr><td style=";"><br/></td><td style=";"><br/></td><td style=";"><br/></td><td style=";"><br/></td><td style=";"><br/></td><td style=";">dispatch.invokeOneWay(invokeParameter);</td></tr><tr><td style=";"><br/></td><td style=";"><br/></td><td style=";"><br/></td><td style=";"><br/></td><td style=";"><br/></td><td style=";">logger.logic("invokeOneWay returned...");</td></tr></tbody></table><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: courier new,courier; font-size: 8pt;"><br/></span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">22:40:18,358 CONF (EJB default - 58) com.ibm.ai.xds.soap.SoapClient.callJAXBWS invokeOneWay called...</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: arial,helvetica,sans-serif; font-size: 10pt;">A configured SoapHandler takes care of logging the outgoing payload</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;"><br/></span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">22:40:18,374 CONF (EJB default - 58) com.ibm.ai.xds.soap.EnvelopeSOAPHandler.handleMessage Calling handleMessage within com.ibm.ai.xds.soap.EnvelopeSOAPHandler</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">22:40:18,374 CONF (EJB default - 58) com.ibm.ai.xds.soap.EnvelopeSOAPHandler.handleMessage Outgoing SOAP response...</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;"><span>22:40:18,405 CONF (EJB default - 58) com.ibm.ai.xds.soap.EnvelopeSOAPHandler.logMessage  [null] Message sent: payload:[<soap:Envelope xmlns:soap="</span><a class="jive-link-external-small" href="http://www.w3.org/2003/05/soap-envelope" rel="nofollow" target="_blank">http://www.w3.org/2003/05/soap-envelope</a><span>"><soap:Header><wsa:Action xmlns:wsa="</span><a class="jive-link-external-small" href="http://www.w3.org/2005/08/addressing" rel="nofollow" target="_blank">http://www.w3.org/2005/08/addressing</a><span>" xmlns:ns0="</span><a class="jive-link-external-small" href="http://www.w3.org/2003/05/soap-envelope" rel="nofollow" target="_blank">http://www.w3.org/2003/05/soap-envelope</a><span>" ns0:mustUnderstand="1">urn:ihe:iti:2007:RegisterDocumentSet-b</wsa:Action><wsa:ReplyTo xmlns:wsa="</span><a class="jive-link-external-small" href="http://www.w3.org/2005/08/addressing" rel="nofollow" target="_blank">http://www.w3.org/2005/08/addressing</a><span>" xmlns:ns0="</span><a class="jive-link-external-small" href="http://www.w3.org/2003/05/soap-envelope" rel="nofollow" target="_blank">http://www.w3.org/2003/05/soap-envelope</a><span>" ns0:mustUnderstand="1"><wsa:Address></span><a class="jive-link-external-small" href="http://localhost:8080/XDSRepositoryWS/DocumentRepository_Service" rel="nofollow" target="_blank">http://localhost:8080/XDSRepositoryWS/DocumentRepository_Service</a><span></wsa:Address></wsa:ReplyTo><wsa:To  xmlns:wsa="</span><a class="jive-link-external-small" href="http://www.w3.org/2005/08/addressing" rel="nofollow" target="_blank">http://www.w3.org/2005/08/addressing</a><span>"></span><a class="jive-link-external-small" href="http://localhost:8080/XDSRegistryWS/DocumentRegistry_Service" rel="nofollow" target="_blank">http://localhost:8080/XDSRegistryWS/DocumentRegistry_Service</a><span></wsa:To><wsa:MessageID  xmlns:wsa="</span><a class="jive-link-external-small" href="http://www.w3.org/2005/08/addressing" rel="nofollow" target="_blank">http://www.w3.org/2005/08/addressing</a><span>">fc12c6a5-7c32-4fbb-962c-596a6afae42a</wsa:MessageID></soap:Header><soap:Body>...</soap:Body></soap:Envelope>]</span></span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><br/>The invokee web service is started <span style="font-size: 10pt; font-family: arial,helvetica,sans-serif;">and send immediatly an ack with a "content" limited to the Headers, No Body  (a non-empty body would not make sense...).</span></p><p><span style="font-size: 10pt; font-family: arial,helvetica,sans-serif;">The invokee is also hosted by the same Jboss server<br/></span></p><p><span style="font-size: 10pt; font-family: arial,helvetica,sans-serif;">The payload is :<br/></span></p><p><span style="font-family: arial,helvetica,sans-serif; font-size: 10pt;"><br/></span></p><p><span style="font-family: courier new,courier; font-size: 8pt;"><span>22:40:18,655 CONF (http-localhost-127.0.0.1-8080-3) com.ibm.ai.xds.webContext.XDSHandler.logMessage message sent... payload:[<soap:Envelope xmlns:soap="</span><a class="jive-link-external-small" href="http://www.w3.org/2003/05/soap-envelope" rel="nofollow" target="_blank">http://www.w3.org/2003/05/soap-envelope</a><span>"><soap:Header><MessageID  xmlns="</span><a class="jive-link-external-small" href="http://www.w3.org/2005/08/addressing" rel="nofollow" target="_blank">http://www.w3.org/2005/08/addressing</a><span>">urn:uuid:a62d5c9e-aa4d-4e72-a0a8-319eb16c70fb</MessageID><To  xmlns="</span><a class="jive-link-external-small" href="http://www.w3.org/2005/08/addressing" rel="nofollow" target="_blank">http://www.w3.org/2005/08/addressing</a><span>"></span><a class="jive-link-external-small" href="http://www.w3.org/2005/08/addressing/anonymous" rel="nofollow" target="_blank">http://www.w3.org/2005/08/addressing/anonymous</a><span></To><ReplyTo  xmlns="</span><a class="jive-link-external-small" href="http://www.w3.org/2005/08/addressing" rel="nofollow" target="_blank">http://www.w3.org/2005/08/addressing</a><span>"><Address></span><a class="jive-link-external-small" href="http://www.w3.org/2005/08/addressing/none" rel="nofollow" target="_blank">http://www.w3.org/2005/08/addressing/none</a><span></Address></ReplyTo><RelatesTo  xmlns="</span><a class="jive-link-external-small" href="http://www.w3.org/2005/08/addressing" rel="nofollow" target="_blank">http://www.w3.org/2005/08/addressing</a><span>"></span><a class="jive-link-external-small" href="http://www.w3.org/2005/08/addressing/unspecified" rel="nofollow" target="_blank">http://www.w3.org/2005/08/addressing/unspecified</a><span></RelatesTo></soap:Header><soap:Body/></soap:Envelope>]</span></span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">22:40:18,655 INFO (http-localhost-127.0.0.1-8080-3) com.ibm.ai.xds.webContext.XDSHandler.Msg sent to: [ 127.0.0.1]  <-- response from call to action:[urn:ihe:iti:2007:RegisterDocumentSet-b] from :[127.0.0.1]</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>And just after, the invoking thread <span style="font-family: courier new,courier; font-size: 8pt;">(EJB default - 58)</span> logged that the invoke returned which ends this thread execution (whic is correct)</p><p><span style="font-family: courier new,courier; font-size: 8pt;"><br/></span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">22:40:18,655 CONF (EJB default - 58) com.ibm.ai.xds.soap.SoapClient.callJAXBWS invokeOneWay returned...</span></p><p><span style="font-family: courier new,courier; font-size: 8pt;">22:40:18,655 INFO (EJB default - 58) com.ibm.ai.asyncCallMgr.CallItem.run runSpecific exit...</span></p><p> -----------------------------------------------------------------------------------------------------------------</p><p><span style="font-size: 10pt; font-family: arial,helvetica,sans-serif;">Although the program worked correctly, I'm curious to know what is the correct behavior...</span></p><p><span style="font-size: 10pt; font-family: arial,helvetica,sans-serif;">For comparision, I never saw that kind of acknowledge, </span><span style="font-size: 10pt; font-family: arial,helvetica,sans-serif;">using Websphere Application Server...</span></p><p style="text-align: start;"><span style="font-size: 10pt; font-family: arial,helvetica,sans-serif;">Here a capture using TCPMON, showing that the receiving service just close the connection (on WAS), at the HTTP level (no SOAP payload at all)<br/></span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="text-align: start;">-----------------------------------------------------------------------------------------------------------------</p><p><span style="font-family: courier new,courier;">HTTP/1.1 202 Accepted</span></p><p><span style="font-family: courier new,courier;">X-Powered-By: Servlet/3.0</span></p><p><span style="font-family: courier new,courier;">Content-Type: application/soap+xml; charset=UTF-8</span></p><p><span style="font-family: courier new,courier;">Content-Length: 0</span></p><p><span style="font-family: courier new,courier;">IBM-WAS-Reset-Connection: TRUE</span></p><p><span style="font-family: courier new,courier;">Content-Language: fr-CA</span></p><p><span style="font-family: courier new,courier;"><strong>Connection: Close</strong></span></p><p><span style="font-family: courier new,courier;">Date: Fri, 15 Mar 2013 03:14:29 GMT</span></p><p><span style="font-family: courier new,courier;">Server: WebSphere Application Server/8.5</span></p><p>-----------------------------------------------------------------------------------------------------------------</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Is this kind of detail left to the implementation of there is a requirement that is not correctly meet by one of those implementations.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Best regards,</p></div>
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