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Subject: [OASIS Issue Tracker] (MQTT-204) Make $ topic separation normative

     [ https://tools.oasis-open.org/issues/browse/MQTT-204?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Richard Coppen updated MQTT-204:

    Proposal: The Server MUST NOT match Topic Filters starting with a wildcard character (# or +) with Topic Names beginning with a $ character. The Server SHOULD prevent Clients from using such Topic Names to exchange messages with other Clients. Server implementations MAY use Topic Names that start with a leading $ character for other purposes.

> Make $ topic separation normative
> ---------------------------------
>                 Key: MQTT-204
>                 URL: https://tools.oasis-open.org/issues/browse/MQTT-204
>             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
>          Issue Type: Improvement
>          Components: core
>            Reporter: Allan Stockdill-Mander 
> Section of wd-20 states;
> A Topic Filter that starts with a wildcard character (# or +) does not match Topic Names that begin with a $ character
> This appears to be a normative statement regarding server behaviour without any accompanying normative language.
> While server implementations may choose whether or not to implement predefined $topics I thought we explicitly did want separate all topics starting with $ from the rest of the topic space.

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