Publish failed! Error NETWORK_SSL_WRITE_ERROR = -7

[edChori]

Hi,

I'm using BLE and WIFI simultaneously, the device connects to AWS and successfully posts 2 MQTT messages but when sending the 3rd one it stops working. The error I get is E (122946) aws_iot: failed! mbedtls_ssl_write returned -0x5.
Log trace: Publish failed! Error NETWORK_SSL_WRITE_ERROR = -7
Free memory: 28348

the implemented logic is:

1. Scan BLE device
2. Connect to WiFi
3. Connect to AWS
4. Find BLE Device
5. Publish data

FUNC_ENTRY: aws_iot_mqtt_publish L#272
DEBUG: aws_iot_mqtt_publish L#273 /voronich/0/reports
FUNC_ENTRY: aws_iot_mqtt_is_client_connected L#235
FUNC_EXIT: aws_iot_mqtt_is_client_connected L#266 Return Code : 1
FUNC_ENTRY: aws_iot_mqtt_get_client_state L#55
FUNC_EXIT: aws_iot_mqtt_get_client_state L#60 Return Code : 3
FUNC_ENTRY: aws_iot_mqtt_set_client_state L#102
FUNC_ENTRY: aws_iot_mqtt_client_lock_mutex L#65
FUNC_EXIT: aws_iot_mqtt_client_lock_mutex L#83 Return Code : 0
FUNC_ENTRY: aws_iot_mqtt_get_client_state L#55
FUNC_EXIT: aws_iot_mqtt_get_client_state L#60 Return Code : 3
FUNC_EXIT: aws_iot_mqtt_set_client_state L#127 Return Code : 0
FUNC_ENTRY: _aws_iot_mqtt_internal_publish L#205
FUNC_ENTRY: _aws_iot_mqtt_internal_serialize_publish L#97
FUNC_ENTRY: aws_iot_mqtt_internal_init_header L#189
FUNC_EXIT: aws_iot_mqtt_internal_init_header L#264 Return Code : 0
FUNC_ENTRY: aws_iot_mqtt_internal_write_len_to_buffer L#60
FUNC_EXIT: aws_iot_mqtt_internal_write_len_to_buffer L#71 Return Code : 2
FUNC_EXIT: _aws_iot_mqtt_internal_serialize_publish L#132 Return Code : 0
Call _aws_iot_mqtt_internal_serialize_publish : 0
FUNC_ENTRY: aws_iot_mqtt_internal_send_packet L#272
FUNC_ENTRY: aws_iot_mqtt_client_lock_mutex L#65
FUNC_EXIT: aws_iot_mqtt_client_lock_mutex L#83 Return Code : 0
ENABLE_THREAD_SUPPORT call aws_iot_mqtt_client_lock_mutex : 0
E (1503909) aws_iot: failed! mbedtls_ssl_write returned -0x50
Network stack write result: -7
ENABLE_THREAD_SUPPORT call aws_iot_mqtt_client_unlock_mutex : 0
FUNC_EXIT: aws_iot_mqtt_internal_send_packet L#319 Return Code : -1
Call aws_iot_mqtt_internal_send_packet : -1
FUNC_EXIT: _aws_iot_mqtt_internal_publish L#228 Return Code : -1
Call _aws_iot_mqtt_internal_publish : -1
FUNC_ENTRY: aws_iot_mqtt_set_client_state L#102
FUNC_ENTRY: aws_iot_mqtt_client_lock_mutex L#65
FUNC_EXIT: aws_iot_mqtt_client_lock_mutex L#83 Return Code : 0
FUNC_ENTRY: aws_iot_mqtt_get_client_state L#55
FUNC_EXIT: aws_iot_mqtt_get_client_state L#60 Return Code : 5
FUNC_EXIT: aws_iot_mqtt_set_client_state L#127 Return Code : 0
Call aws_iot_mqtt_set_client_state : 0
FUNC_EXIT: aws_iot_mqtt_publish L#301 Return Code : -1

[dimkir]

I would be grateful if you can hint of - how did you enable function tracing?

I have noticed that there are trace related macros, aws_iot_log.h, however I cannot find a way to enable them.

• if i try to #define ENABLE_IOT_TRACE inside of the sketchfile (.ino) - nothing happens
• if i monkey patch aws_iot_log.h to make those directive available always - I still no output on my Serial Monitor, as printf output goes to nowhere (when I am uploading and running sketch on ESP32 board)

Thank you

[rishadali]

Hello,
I am also seeing this error once the WiFi is turned off it throws this error
E (44829) aws_iot: failed! mbedtls_ssl_write returned -0x4e
and it is unable to reconnect to the WiFi and logging
Publish failed
Did you resolve the issue? Thanks