Add config option for selecting protocol version at runtime.
This also fixed MQTT protocol version 3.1 which wasnt working with the original implementation
Closes https://github.com/espressif/esp-idf/issues/4448
Closes IDFGH-2311
Closes IDF-1320
This commit adds an event information "connect_return_code" that is written
when the client state is MQTT_STATE_INIT, and the connection fails.
This event info can then be written by the user app to find out the reason
of the fail connection.
Merges https://github.com/espressif/esp-mqtt/pull/100
The time for retransmitting a message was set before transfer was done. This ment that if the transfer speed is slow or the message is big then it would be possible to trigger a retransmit too early.
Closes https://github.com/espressif/esp-mqtt/issues/131
- Some PUBLISHED events would not be posted due to outbox messages being deleted before receiving PUBCOMP.
- Current pending_message is no longer used to check for acknowledgements, as it doesn't work with multiple or out of order messages.
Closes https://github.com/espressif/esp-mqtt/issues/132
Marius Vikhammer
João Cabral
Ivan Grokhotkov
David Cermak
Gregory Eslinger
suda-morris
Riccardo Binetti
Tuan PM
Christian Gawron
JasonJiaJie