[PROTON-1497] python program crash on send msg to queue

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: proton-c-0.17.0
• Component/s: proton-c, python-binding
• Labels: crash
• Environment: redhat 7.2 - activemq-5.14.3 - Python 3.6.0
• Assignee: Justin Ross
• Reporter: Pier Paolo Panto
• Created: 06/Jun/17 15:35
• Updated: 20/Oct/17 22:39

Description

In the attached file there is an on_message method that performs a lenghty calculation whenever a message is receivede on the input queue. In this case, the branch that gets executed is the one starting at line 123.

A the end of the branch a new message is created and sent so an out queue.

The problem is that if the calculation takes a long time (>1min) to finish, randomly the program crashes when trying to execute the send instruction
(line 157). I also tryed to encapsulate the send into a try/except clause, but the code inside the except never gets executed.

Moreover, the exit code (echo $?) when the program crashes is 0

When this happens, I get this message in the log file:
handlers.py:234 in print_error(): local-idle-timeout expired

but setting the timeout parameters for the connection has no effect.

What could be causing this behaviour?

Best Regard,
PPP