[PROTON-1110] [proton-j] allow suppressing the synthentic flow event when sending transfers

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: proton-0.11.1
• Fix Version/s: proton-0.12.0
• Component/s: proton-j
• Assignee: Robbie Gemmell
• Reporter: Robbie Gemmell
• Created: 26/Jan/16 13:49
• Updated: 23/May/18 22:22
• Resolved: 26/Jan/16 14:21

Description

The engine emits synthetic Flow events when sending messages, in addition to those raised when receiving a Flow frame for the link. I believe the reasoning for this is so to treat it as a 'credit changed' indicator. However, as there are cases where the decision to send a message has little at all to do with the credit conditions, having these events its often unecessary and wasteful.

A simple toggle will be added to signal the transport not to emit the flow events for use in those cases. The default behaviour will be unchanged.

Issue Links

• is related to: PROTON-778 [c] Optimize de-duplication of PN_LINK_FLOW events