MQTT Error Codes

[jlienau03]

When attempting to connect to an MQTT broker set up on my local machine using the mqtt simple sample code, I get this output:

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***** Booting Zephyr OS v1.14.99-ncs1 *****

The MQTT simple sample started

LTE Link Connecting ...

LTE Link Connected!

IPv4 Address found 0x0100007f

ERROR: mqtt_connect -60

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

***** Booting Zephyr OS v1.14.99-ncs1 *****
The MQTT simple sample started
LTE Link Connecting ...

LTE Link Connected!

IPv4 Address found 0x0100007f

ERROR: mqtt_connect -60

What does this error code mean? Also, is there a location where I can see what all the error codes mean?

prj.conf for reference:

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# General config

CONFIG_TEST_RANDOM_GENERATOR=y

# Networking

CONFIG_NETWORKING=y

CONFIG_NET_SOCKETS_OFFLOAD=y

CONFIG_NET_SOCKETS=y

CONFIG_NET_SOCKETS_POSIX_NAMES=y

# LTE link control

CONFIG_LTE_LINK_CONTROL=y

CONFIG_LTE_AUTO_INIT_AND_CONNECT=n

# BSD library

CONFIG_BSD_LIBRARY=y

# AT Host

CONFIG_UART_INTERRUPT_DRIVEN=y

CONFIG_AT_HOST_LIBRARY=y

# MQTT

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

# General config
CONFIG_TEST_RANDOM_GENERATOR=y

# Networking
CONFIG_NETWORKING=y
CONFIG_NET_SOCKETS_OFFLOAD=y
CONFIG_NET_SOCKETS=y
CONFIG_NET_SOCKETS_POSIX_NAMES=y

# LTE link control
CONFIG_LTE_LINK_CONTROL=y
CONFIG_LTE_AUTO_INIT_AND_CONNECT=n

# BSD library
CONFIG_BSD_LIBRARY=y

# AT Host
CONFIG_UART_INTERRUPT_DRIVEN=y
CONFIG_AT_HOST_LIBRARY=y

# MQTT
CONFIG_MQTT_LIB=y
CONFIG_MQTT_LIB_TLS=n

# Appliaction
CONFIG_MQTT_PUB_TOPIC="pubtopic/test"
CONFIG_MQTT_SUB_TOPIC="pubtopic/test"
CONFIG_MQTT_CLIENT_ID="test-id"
CONFIG_MQTT_BROKER_HOSTNAME="127.0.0.1"
CONFIG_MQTT_BROKER_PORT=1883

# Main thread
CONFIG_MAIN_THREAD_PRIORITY=7
CONFIG_MAIN_STACK_SIZE=4096

CONFIG_HEAP_MEM_POOL_SIZE=1024

Thanks

[Simon]

Take a look at ncs\zephyr\lib\libc\minimal\include\errno.h for more information about errors. The error 60 is ETIMEDOUT, which means the connection timed out.

Best regards,

Simon