[DISPATCH-1423] Multicast sender with no receiver has first 250 messages released

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8.0, 1.9.0
• Fix Version/s: 1.10.0
• Component/s: Routing Engine
• Assignee: Ken Giusti
• Reporter: Charles E. Rolke
• Created: 17/Sep/19 15:33
• Updated: 20/Dec/19 12:10
• Resolved: 07/Oct/19 14:14

Description

When a sender starts and there's no receiver already attached then the first 250 messages the sender sends get released. After that the router waits for the a receiver to attach before issuing more credit to the sender. The proton c++ simple_send and simple receive clients expose this problem.

1. Start router with attached config file
2. Start sender
simple_send -a 127.0.0.1:5672/multicast/q1 -m 500
3. Start receiver
simple_recv -a 127.0.0.1:5672/multicast/q1 -m 500

The sender competes with 'all messages confirmed'.
The receiver is waiting for the second 250 messages.

Issue Links

• is related to: DISPATCH-779 Credit is not issued for multicast address when no receiver is connected
• links to: GitHub Pull Request #580