[PROTON-907] Qpid Proton Point to Point Hang on CentOS 6 pn_messenger_send

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: proton-0.8, proton-0.9.1
• Fix Version/s: proton-0.10
• Component/s: proton-c
• Environment: CentOS 6 (both VM and native 64-bit) and RHEL 6
• Assignee: Gordon Sim
• Reporter: Frank Quinn
• Created: 11/Jun/15 07:30
• Updated: 07/Jan/16 12:14
• Resolved: 02/Jul/15 15:27

Description

See thread at http://qpid.2158936.n2.nabble.com/Strange-behaviour-for-pn-messenger-send-on-CentOS-6-td7625846.html.

Key points:

• pn_messenger_send will hang on CentOS 6 if the destination is not yet up
• Works fine on Fedora 21 and 22 (by 'fine', i mean it will attempt to send, fail and move on)
• Can be recreated by running the send.c application when recv.c is not yet running
• Proton burns CPU as it hangs

This effectively deadlocks our application. So far, I’ve tried compiling qpid proton c myself (both 0.8 and 0.9.1), setting pn_messenger_send timeout to 1 (it was previously -1), turning off iptables entirely and disabling selinux and rebooting but no luck.