[ https://issues.oasis-open.org/browse/MQTT-501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=67128#comment-67128 ]
Ken Borgendale commented on MQTT-501:
-------------------------------------
The actual maximum size of a packet is 2**28+4 as the variable byte integer remaining length does not include the size of the fixed header. Therefore strictly a variable byte integer does not encode enough bits to represent this value.
One solution is to simply specify Maximum Packet Size as a Four Byte Integer and allow any value up to 2**32-1. All values > 268,435,460 would give the same result as that value as no packet larger than this could be encoded. Someone wishing to explicitly code unlimited could then jsut use UINT_MAX (0xFFFFFFFF).
> Change type of Maximum Packet Size to Variable Byte Integer
> -----------------------------------------------------------
>
> Key: MQTT-501
> URL: https://issues.oasis-open.org/browse/MQTT-501
> Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
> Issue Type: Bug
> Components: core
> Affects Versions: 5, CSD01
> Reporter: Ken Borgendale
> Fix For: 5
>
>
> Please revise the type of Maximum Packet Size from Four Byte Integer
> to Variable Integer in 2.2.2.2, 3.1.2.11.5, and 3.2.2.3.5.
> Regards,
> Tatsuzo
--
This message was sent by Atlassian JIRA
(v6.2.2#6258)
