MQTT-SN SC Meeting

NOTE: This call is at 16:00 BST (UTC+1) - there is no option to select BST in the OASIS system.

• Roll call

• Approve agenda

• Approve minutes from last meeting - https://groups.oasis-open.org/higherlogic/ws/public/document?document_id=72731&wg_id=3d1c9127-09c1-4b2e-8801-018dc7d3f558

• Voting rights update

• Working draft updates done:

  • https://issues.oasis-open.org/browse/MQTT-645 – added optional Server Keep Alive to CONNACK and limited PINGREQ sending to Clients only

  • added note to Retain Topic Aliases flag saying that Predefined Topic Aliases are unaffected

  • https://issues.oasis-open.org/browse/MQTT-648 : added CONNECT transition from Awake/Asleep to Active in section 4.14, including diagrams

  • https://issues.oasis-open.org/browse/MQTT-623 : update QoS2 descriptions and diagrams to match consensus

  • Section C.4 – added text header descriptions

  • Section C.5 – added formula back in

• Issues/questions:

  • format of header references: section 2.3 or 2.3 Reason Code ?

  • https://issues.oasis-open.org/browse/MQTT-650 – client Topic Alias definitions?

  • https://issues.oasis-open.org/browse/MQTT-651 – inflight window of 1 is inefficient

  • https://issues.oasis-open.org/browse/MQTT-647 – what is the exact meaning of radius? (Broadcast radius in ZigBee is a one byte value. It’s only in SEARCHGW so it can be put into the response, GWINFO. Why is it only 4 bits in the Forwarder Encapsulation?)

• Working draft todo:

  • https://issues.oasis-open.org/browse/MQTT-649 – Gateway receiving a different Client Id in PINGREQ when sleeping

  • request template for implementation guide

  • Section 3.9.3 - Can we provide an example on how to associate a PUBLISH received by a GW with a session handled by the same GW?

  • review and update entire draft for use of Packet and Application, Will and Retained Message terms

  • Remove comparative references to MQTT

  • be specific about DUP flag use

  • decide what contents we want for Appendix D – Revision History

  • gather conformance statements and compete Appendix B

• AOB

• Confirm time and date of next meeting

• Check for late arrivals