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Subject: [OASIS Issue Tracker] (MQTT-58) How many messages are received for overlapping subscriptions?
[ https://issues.oasis-open.org/browse/MQTT-58?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=63617#comment-63617 ] Andrew Banks commented on MQTT-58: ---------------------------------- MQTT253 (add subscription ids) tried to address this but was abandoned. Other ways to address this, might be: - Require that a server that sends multiple messages should mark all but the first message as repeat a message. - A server should announce on CONNACK that it is going to send multiple responses when needed. - The server should add a unique identifier to a publish message so that the client can eliminate the repeat messages if it needs to. > How many messages are received for overlapping subscriptions? > ------------------------------------------------------------- > > Key: MQTT-58 > URL: https://issues.oasis-open.org/browse/MQTT-58 > Project: OASIS Message Queuing Telemetry Transport (MQTT) TC > Issue Type: Improvement > Components: core > Affects Versions: 3.1.1 > Reporter: Allan Stockdill-Mander > Assignee: Andrew Banks > Fix For: 3.1.1 > > > A client has subscribed to a/+ with QoS2 and a/b with QoS1. A message is published to a/b. Does the client receive one or two messages? If one which QoS would apply? -- This message was sent by Atlassian JIRA (v6.2.2#6258)
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