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- Enforce the configured packet size limit locally for MQTT 3.1/3.1.1. - Close the connection if the broker sends a packet exceeding the limit. MQTT 3.1 and 3.1.1 have no way to tell the broker the maximum packet size the client accepts, so the limit can only be applied on the client side. This is helpful for clients on embedded devices, where memory is limited and a very large packet from the broker could exhaust it. [ChangeLog][QMqttClient] The maximumPacketSize connection property is now also enforced for MQTT 3.1 and 3.1.1 connections. Previously it was only honored for MQTT 5.0. The client now closes the connection if the broker sends a packet larger than this limit. This helps clients on embedded devices to protect their limited memory. The default behavior is unchanged: if no limit is set, only the protocol maximum of 256 MB applies. Change-Id: I26625325f490e2396fa493005c1f322253007a33 Reviewed-by: Ivan Solovev <ivan.solovev@qt.io> |
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