HttpRouter fire java.lang.NullPointerException if the Status Code is 304 (Not Modified) --------------------------------------------------------------------------------------- Key: JBESB-2797 URL: https://jira.jboss.org/jira/browse/JBESB-2797 Project: JBoss ESB Issue Type: Bug Security Level: Public (Everyone can see) Affects Versions: 4.6 Reporter: Magesh Kumar B Assignee: Magesh Kumar B Fix For: 4.7 When a GET is requested with If-Modified-Since in the header, the server responds with 304 - Not Modified with no Response Body[1] if the document requested is not modified since. We get the following error in such situations. WARN [org.jboss.soa.esb.actions.routing.http.HttpRouter] Received status code '304' on HTTP org.apache.commons.httpclient.methods.GetMethod@5583aa request to 'http://server/url'. ERROR [org.jboss.soa.esb.listeners.gateway.JBossRemotingGatewayListener] JBoss Remoting Gateway failed to synchronously deliver message to target service [Service:Category]. org.jboss.soa.esb.couriers.FaultMessageException: java.lang.IllegalArgumentException: null 'stream' arg passed in method call. at org.jboss.soa.esb.listeners.message.errors.Factory.createExceptionFromFault(Factory.java:50) at org.jboss.internal.soa.esb.couriers.TwoWayCourierImpl.pickup(TwoWayCourierImpl.java:207) at org.jboss.soa.esb.client.ServiceInvoker$EPRInvoker.attemptDelivery(ServiceInvoker.java:580) at org.jboss.soa.esb.client.ServiceInvoker$EPRInvoker.access$200(ServiceInvoker.java:493) at org.jboss.soa.esb.client.ServiceInvoker.post(ServiceInvoker.java:343) at org.jboss.soa.esb.client.ServiceInvoker.deliverSync(ServiceInvoker.java:204) at org.jboss.soa.esb.listeners.message.UncomposedMessageDeliveryAdapter.deliverSyncWithoutDecomposing(UncomposedMessageDeliveryAdapter.java:107) at org.jboss.soa.esb.listeners.message.UncomposedMessageDeliveryAdapter.deliverSync(UncomposedMessageDeliveryAdapter.java:86) at org.jboss.soa.esb.listeners.gateway.JBossRemotingGatewayListener.invoke(JBossRemotingGatewayListener.java:345) at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:866) at org.jboss.remoting.transport.coyote.CoyoteInvoker.service(CoyoteInvoker.java:310) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619) Caused by: java.lang.IllegalArgumentException: null 'stream' arg passed in method call. at org.jboss.internal.soa.esb.util.StreamUtils.readStream(StreamUtils.java:47) at org.jboss.soa.esb.actions.routing.http.HttpRouter.process(HttpRouter.java:109) at org.jboss.soa.esb.listeners.message.ActionProcessingPipeline.processPipeline(ActionProcessingPipeline.java:615) at org.jboss.soa.esb.listeners.message.ActionProcessingPipeline.processPipeline(ActionProcessingPipeline.java:574) at org.jboss.soa.esb.listeners.message.ActionProcessingPipeline.process(ActionProcessingPipeline.java:408) at org.jboss.soa.esb.listeners.message.MessageAwareListener$TransactionalRunner.run(MessageAwareListener.java:540) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) ... 1 more [1] http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html "10.3.5 304 Not Modified If the client has performed a conditional GET request and access is allowed, but the document has not been modified, the server SHOULD respond with this status code. The 304 response MUST NOT contain a message-body, and thus is always terminated by the first empty line after the header fields. " -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira