[ https://issues.apache.org/jira/browse/PROTON-1939?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Sreeram Garlapati updated PROTON-1939: -------------------------------------- Description: Our library (Microsoft Azure EventHubs java sdk) take a dependency on proton-j library for AMQP implementation. Many of Our customers are reporting this issue and would highly appreciate your response.   We are basically hitting this TODO in the TransportImpl.java - which results in reactor teardown: [https://github.com/apache/qpid-proton-j/blob/master/proton-j/src/main/java/org/apache/qpid/proton/engine/impl/TransportImpl.java#L1160]   Here's the Exception stack trace:   {color:#24292e}com.microsoft.azure.eventhubs.impl.MessagingFactory$RunReactor.run:487 messagingFactory[MessagingFactoryab1d8d], hostName[NNNNNNNNNNN.servicebus.windows.net], error[UnHandled exception while processing events in reactor:{color} {color:#24292e} java.lang.NullPointerException: uncorrelated channel: 3{color} {color:#24292e} org.apache.qpid.proton.engine.impl.EventImpl.dispatch(EventImpl.java:112){color} {color:#24292e} org.apache.qpid.proton.reactor.impl.ReactorImpl.dispatch(ReactorImpl.java:324){color} {color:#24292e} org.apache.qpid.proton.reactor.impl.ReactorImpl.process(ReactorImpl.java:292){color} {color:#24292e} com.microsoft.azure.eventhubs.impl.MessagingFactory$RunReactor.run(MessagingFactory.java:462){color}   here's how to reproduce this error: * configure the listener - to delay respond to session.begins for ex: by 5 secs * then client (or another peer) sends session.begin * client doesn't receive any response even after 1 sec * then the client decides to close the session * then, after few sec's service(listener) responds back with session.begin  Please contact us at [sreeramg@microsoft.com|mailto:sreeramg@microsoft.com] [sjkwak@microsoft.com|mailto:sjkwak@microsoft.com] - if you need more data on this or need a resource to contribute to this. Truly appreciate your help. was: Our library (Microsoft Azure EventHubs java sdk) take a dependency on proton-j library for AMQP implementation. Many of Our customers are reporting this issue and would highly appreciate your response.   We are basically hitting this TODO in the TransportImpl.java - which results in reactor teardown: [https://github.com/apache/qpid-proton-j/blob/master/proton-j/src/main/java/org/apache/qpid/proton/engine/impl/TransportImpl.java#L1160]   Here's the Exception stack trace:   {color:#24292e}com.microsoft.azure.eventhubs.impl.MessagingFactory$RunReactor.run:487 messagingFactory[MessagingFactoryab1d8d], hostName[NNNNNNNNNNN.servicebus.windows.net], error[UnHandled exception while processing events in reactor:{color} {color:#24292e} java.lang.NullPointerException: uncorrelated channel: 3{color} {color:#24292e} org.apache.qpid.proton.engine.impl.EventImpl.dispatch(EventImpl.java:112){color} {color:#24292e} org.apache.qpid.proton.reactor.impl.ReactorImpl.dispatch(ReactorImpl.java:324){color} {color:#24292e} org.apache.qpid.proton.reactor.impl.ReactorImpl.process(ReactorImpl.java:292){color} {color:#24292e} com.microsoft.azure.eventhubs.impl.MessagingFactory$RunReactor.run(MessagingFactory.java:462){color}   here's how to reproduce this error: * configure the listener - to delay respond to session.begins for ex: by 5 secs * then client (or another peer) sends session.begin * client doesn't receive any response even after 1 sec * then the client decides to close the session * then, after few sec's service(listener) responds back with session.begin   > NullPointerException while handing remote session.begin in TransportImpl > ------------------------------------------------------------------------ > > Key: PROTON-1939 > URL: https://issues.apache.org/jira/browse/PROTON-1939 > Project: Qpid Proton > Issue Type: Bug > Components: proton-j > Affects Versions: proton-j-0.29.0 > Environment: Any environment > Reporter: Sreeram Garlapati > Priority: Major > Fix For: proton-j-0.30.0 > > > Our library (Microsoft Azure EventHubs java sdk) take a dependency on proton-j library for AMQP implementation. > Many of Our customers are reporting this issue and would highly appreciate your response. >   > We are basically hitting this TODO in the TransportImpl.java - which results in reactor teardown: > [https://github.com/apache/qpid-proton-j/blob/master/proton-j/src/main/java/org/apache/qpid/proton/engine/impl/TransportImpl.java#L1160] >   > Here's the Exception stack trace: >   > {color:#24292e}com.microsoft.azure.eventhubs.impl.MessagingFactory$RunReactor.run:487 messagingFactory[MessagingFactoryab1d8d], hostName[NNNNNNNNNNN.servicebus.windows.net], error[UnHandled exception while processing events in reactor:{color} > {color:#24292e} java.lang.NullPointerException: uncorrelated channel: 3{color} > {color:#24292e} org.apache.qpid.proton.engine.impl.EventImpl.dispatch(EventImpl.java:112){color} > {color:#24292e} org.apache.qpid.proton.reactor.impl.ReactorImpl.dispatch(ReactorImpl.java:324){color} > {color:#24292e} org.apache.qpid.proton.reactor.impl.ReactorImpl.process(ReactorImpl.java:292){color} > {color:#24292e} com.microsoft.azure.eventhubs.impl.MessagingFactory$RunReactor.run(MessagingFactory.java:462){color} >   > here's how to reproduce this error: > * configure the listener - to delay respond to session.begins for ex: by 5 secs > * then client (or another peer) sends session.begin > * client doesn't receive any response even after 1 sec > * then the client decides to close the session > * then, after few sec's service(listener) responds back with session.begin >  Please contact us at [sreeramg@microsoft.com|mailto:sreeramg@microsoft.com] [sjkwak@microsoft.com|mailto:sjkwak@microsoft.com] - if you need more data on this or need a resource to contribute to this. 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