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Subject: [OASIS Issue Tracker] Updated: (MQTT-88) Clarify semantics of a SUBSCRIBE that contains multiple Topic Filters
[ http://tools.oasis-open.org/issues/browse/MQTT-88?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Peter Niblett updated MQTT-88: ------------------------------ Proposal: Add the following text into the description of SUBSCRIBE If a server receives a SUBSCRIBE packet that contains multiple topic filters it MUST handle that packet as if it had received a sequence of multiple SUBSCRIBE packets, except that it combines their responses into a single SUBACK response. Add the following text to the description of UNSUBSCRIBE If a server receives an UNSUBSCRIBE packet that contains multiple topic filters it MUST handle that packet as if it had received a sequence of multiple UNSUBSCRIBE packets, except that it sends just one UNSUBACK response. was:A subscribe or unsubscribe packet containing multiple topic filters is treated by the server as if multiple subscribe or unsubscribe packets, were received and then the response combined. > Clarify semantics of a SUBSCRIBE that contains multiple Topic Filters > --------------------------------------------------------------------- > > Key: MQTT-88 > URL: http://tools.oasis-open.org/issues/browse/MQTT-88 > Project: OASIS Message Queuing Telemetry Transport (MQTT) TC > Issue Type: Improvement > Components: core > Affects Versions: 3.1.1 > Reporter: Peter Niblett > Fix For: 3.1.1 > > > The Subscribe packet is allowed to contain more than one Topic Filter. It is not clear whether > 1. This is just a convenience, allowing clients to combine multiple subscribe requests into a single Control Packet, thus saving network traffic, or > 2. There is some additional semantic implied by the presence of two or more topic filters in a single packet (e.g. that they must all be granted if any of them is granted) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://tools.oasis-open.org/issues/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
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