Framer unable to receive heartbeat from libary and disconnect

[DewBubble]

I ran tests with artio engine, sending 20k FIX Messages per second and generated fake response messages at the same rate. However, Framer disconnect from library after a few seconds. I printed out heart beats and management messages:

[library_management]Timing out connection to library.

It is strange that library able to receive heart beat from Framer, but Framer unable to receive heart beats from library after a while.

[mcsimk]

We had very similar issue, until we noticed we are using two different threads to access Session objects. In our case it was one thread that AgentRunner was running on to process incoming requests, and one more thread running a scheduled job to send outgoing requests. Once we refactored it to only have Session accessed by one thread, the issue was gone.