[PROTON-1939] NullPointerException while handing remote session.begin in TransportImpl

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: proton-j-0.29.0
• Component/s: proton-j
• Environment: Any environment
• External issue URL: https://github.com/Azure/azure-event-hubs-java/issues/287
• Assignee: Unassigned
• Reporter: Sreeram Garlapati
• Created: 21/Sep/18 21:32
• Updated: 06/Nov/18 13:08

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:

 

com.microsoft.azure.eventhubs.impl.MessagingFactory$RunReactor.run:487 messagingFactory[MessagingFactoryab1d8d], hostName[NNNNNNNNNNN.servicebus.windows.net], error[UnHandled exception while processing events in reactor:
java.lang.NullPointerException: uncorrelated channel: 3
org.apache.qpid.proton.engine.impl.EventImpl.dispatch(EventImpl.java:112)
org.apache.qpid.proton.reactor.impl.ReactorImpl.dispatch(ReactorImpl.java:324)
org.apache.qpid.proton.reactor.impl.ReactorImpl.process(ReactorImpl.java:292)
com.microsoft.azure.eventhubs.impl.MessagingFactory$RunReactor.run(MessagingFactory.java:462)

 

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 [e-mail] [e-mail] - if you need more data on this or need a resource to contribute to this. Truly appreciate your help.