Set MQTT max packet size #7091
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Set MQTT max packet size #7091
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In MQTT 3.1.1, the CONNECT packet consists of 1. 10 bytes variable header 2. ClientId (up to 23 bytes must be supported) 3. Will Topic 4. Will Message (maximum length 2^16 bytes) 5. User Name 6. Password Restricting the CONNECT packet size to 2^16 = 65,536 bytes seems to be a reasonalbe default. The value is configurable via the MQTT app parameter `max_packet_size_unauthenticated`. (Instead of being called `max_packet_size_connect`) the name `max_packet_size_unauthenticated` is generic because MQTT 5 introduces an AUTH packet type.
michaelklishin
approved these changes
Jan 29, 2023
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Set default max size of 65,536 for CONNECT packet.
In MQTT 3.1.1, the CONNECT packet consists of
Restricting the CONNECT packet size to 2^16 = 65,536 bytes seems to be a reasonalbe default.
The value is configurable via advanced.config.