[AMQ-6659] AMQP: Match client SenderSettleMode instead of always defaulting to MIXED

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 5.14.4
• Fix Version/s: 5.15.0, 5.14.6
• Component/s: AMQP
• Assignee: Timothy A. Bish
• Reporter: Timothy A. Bish
• Created: 21/Apr/17 14:26
• Updated: 21/Apr/17 14:54
• Resolved: 21/Apr/17 14:54

Description

On link attach we currently default out SenderSettleMode to MIXED which while legal doesn't truly reflect what the client asked for. We should instead update the link to reflect the mode requested by the client

Also add some tests to ensure that we always return the ReceiverSettleMode as FIRST since we don't support SECOND.