Memory Leak without listening on Packets

Smack Smack Dev
1

Hi Everyone!

I’‘m using smack lib in a small client implementation. My client’‘s only purpose is to obtain presence information from all users listed in the Roster of a static user account. Therefore I’‘ve implemented a RosterListener and in case of network errors a ConnectionListener as well. What I don’‘t do (because I don’‘t need it - as I think) is listening for incoming messages / packets, meaning I’'ve ignored the PacketCollector/Listener stuff. However my client runs 24 hours a day and after a while I get a java heap space overflow. Do I have to listen for incoming packets and then just drop them or is there any issue with the Roster/RosterListener classes concerning memory leaks?

Thanks in advance.

2

Hey HFaust,

Welcome to the forums! We are aware of a memory leak in the way that PacketCollectors hold packets (they hold them indefintly) we have been working on a fix for this. I am interested to know the specific PacketListener which is causing the issue for you - PacketListener wraps PacketCollector, or if there is an errant PacketCollector. If you could hook up a profiler to your program it will help us diagnose what is going on. I will attempt to reproduce on my end. Which version of Smack are you using?

Thanks,

Alex

3

Hi Alex!

Thanks for your response. As I’‘ve tried to explain in my posting, I’‘m actually not using any PacketListener (nor PacketCollector) at all. That’‘s why I’‘m a little confused. I thought not implementing this interface results in the messages (sent to my simple client) remaining on the server. But as a matter of fact, my application’‘s heap space is growing and I’'ve pinpointed this fact to the usage of the smack library (version 2.2.1, cross-platform build, June 12., 2006) and the established connection to the server. Does the org.jivesoftware.smack.XMPPConnection class automatically receive and store incoming packets once login is processed?

greetings,

heinrich

4

HFaust,

Yes, there are PacketListeners automatically created by Smack. I will look into which ones are created and see if I can’'t diagnose what is the issue.

Thanks,

Alex