MQTT over TLS

[TomaszKn]

HI
Is possible connect to Mosquitto broker over TLS/SSL on 8883 port?
How convert ca.crt to cert.h?

[slaff]

Is possible connect to Mosquitto broker over TLS/SSL on 8883 port?

@TomaszKn Yes, it is possible - take a look at the MqttClient_Hello ( https://github.com/SmingHub/Sming/blob/develop/samples/MqttClient_Hello/app/application.cpp ) sample.

How convert ca.crt to cert.h?

Do you want to send client certificate?

[TomaszKn]

True.
I have origin/master where isn't SSL in MQTT, but after change to develop and rebuild all project when I'm flashing my ESP-01 or ESP-07, chip not start.
It test on MQTT SSL and Basic_SSL

Wrote 274432 bytes at 0x9000 in 23.8 seconds (92.3 kbit/s)...
Leaving...
python -m serial.tools.miniterm /dev/ttyUSB0 115200
--- Miniterm on /dev/ttyUSB0 115200,8,N,1 ---
--- Quit: Ctrl+] | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H ---
380, len 12528, room 8
tail 8
chksum 0x7c
csum 0x7c
csum err
ets_main.c Fatal exception (28):
epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000
Fatal exception (28):
epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000
Fatal exception (28):
epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000 Fatal exception (28): epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000 Fatal exception (28): epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000 Fatal exception (28): epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000 Fatal exception (28): epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000 Fatal exception (28): epc1=0x4000228b, epc2=0x00000000, epc3=0x00000000, excvaddr=0x000000b5, depc=0x00000000

On ESP-01 or ESP-07 Isn't available SSL?

[slaff]

It could be that the application is too big for ESP-01 with 512 KB flash. Can you try something for me: Erase your flash before saving the firmware on it.

./esptool.py --port /dev/ttyUSB0 erase_flash

If needed replace the port variable with your one.

After that flash the application.

[TomaszKn]

Couldn't boot again

[powo01]

At my ESP-01 the MqTT Client Example in TLS mode is working. The compiled binary is about 310kB
I have compiled in a cert and key in DER format but the output told me something is wrong

[slaff]

... but the output told me something is wrong

@powo01 can you paste the output to see details?

[slaff]

@TomaszKn Please, paste the output when you flash the ROMs on the device. Type make flash V=1.

[slaff]

Feel free to reopen if there is more information.