MQTT+TLS

[asvitha]

Hi,

I have implemented MQTT with FREE RTOS code, Now adding TLS with this code I got some issues like:

mbedtls_ssl_flush_output() returned -69 (-0x0045)
, at line 3472 in file .ssl_tls.c

0x20210f98: ssl_write_record() returned -69 (-0x0045)
, at line 3315 in file .ssl_tls.c

0x20210f98: mbedtls_ssl_write_handshake_msg() returned -69 (-0x0045)
, at line 1095 in file .ssl_cli.c
failed
! mbedtls_ssl_handshake returned -0x45

[asvitha]

Hi,

I am trying to implement MQTT with TLS but I face some issues in tls handshake,mbedtls handshake -26880 ( MBEDTLS_ERR_SSL_WANT_READ) it is .In wireshark,

client hello is success

server hello, certificate, server key exchange, server hello done is success

but i didn't get the complete tls handshake it is not connecteed to broker because of this error mbedtls handshake -26880 ( MBEDTLS_ERR_SSL_WANT_READ) 

server hello

[asvitha]

Thank You for your Guidance

[jeremyzhou]

Hi,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
To provide the fastest possible support, I'd highly recommend you refer to the AWS_example demos in the SDK library.
Have a great day,
TIC

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[mjbcswitzerland]

Hi

Note that the uTasker project also includes out-of-the-box MQTT + TLS on Kinetis and i.MX RT 10xx parts:

User's guide: https://www.utasker.com/docs/uTasker/uTasker_MQTT.pdf

Video: https://www.youtube.com/watch?v=-_CV2aXHyjw&list=PLWKlVb_MqDQFZAulrUywU30v869JBYi9Q&index=24

Regards

Mark
[uTasker project developer for Kinetis and i.MX RT]
Contact me by personal message or on the uTasker web site to discuss professional training, solutions to problems or product development requirements