[DISPATCH-1125] AMQP framing errors on forwarded multicast messages

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.3.0
• Fix Version/s: 1.4.0
• Component/s: Router Node
• Assignee: Unassigned
• Reporter: Charles E. Rolke
• Created: 20/Sep/18 14:20
• Updated: 12/Oct/18 14:54
• Resolved: 12/Oct/18 14:54

Description

These errors show up using the same setup described in DISPATCH-1124.

A three-router linear network uses a wireless connection for the interrouter links.

Messages are injected into a router at one end of the chain and are forwarded to receivers on the other two routers.

• The receiver attached to the router in the middle may receive tens of millions of messages before getting an underflow.
• The receiver attached to the router at the far end of the chain may file as soon as 25 messages or as late as several thousand messages.
• Messages are text strings 1,443 bytes long

Some observations:

• Normal transfer frames have  transport size of 0x5ec bytes.
• Messages that fail with underrun commonly have a size of 0x1aa bytes. It is not always 0x1aa but that number shows up in consecutive runs.