These four attributes where added to the management interfaces at community stability level by WFCORE-6830 :

• backlog
• no-read-timeout
• connection-high-water
• connection-low-water

These attributes are only available via system properties at the default stability level. This feature request is to track any work to promote the feature to default stability level and make them available in the management model. System properties should remain in place but usage should could be deprecated in favor of management attributes.