NRF9160 MQTT SIMPLE ERROR

[Mmterkc]

Hi, I am using NRF9160 than I am using mqtt_simple example. I modified it. I want to send 4200 byte to mqtt broker but I get error. error is:<err> mqtt_simple: Publish failed: -128 My proj file:

CONFIG_NET_RX_STACK_SIZE=4256

CONFIG_NET_TX_STACK_SIZE=4256

CONFIG_NET_BUF_DATA_SIZE=4256

CONFIG_NET_BUF_USER_DATA_SIZE=4256

CONFIG_NRF_MODEM_LIB_SHMEM_TX_SIZE=4256

CONFIG_MQTT_MESSAGE_BUFFER_SIZE=4256

CONFIG_MQTT_PAYLOAD_BUFFER_SIZE=4256

my mqtt buffer part:

* Buffers for MQTT client. */

static uint8_t rx_buffer[1024];

static uint8_t tx_buffer[4256];

static uint8_t payload_buf[1024];

How can I send 4200 byte to broker?

[Øyvind]

Hello, 

Have you verified that you are connected to your broker? Did it work before modifying the sample? 

mqtt_simple: Publish failed: -128

From Newlib errno.h - #define ENOTCONN 128 /* Socket is not connected */

Kind regards,
Øyvind

[Mmterkc]

Hi, yes I connected to broker but my problem is byte number I tried Isend 1024 bytes and 2048 bytes. Øyvind

Thanks

[Øyvind]

Difficult to tell based this little information. Can you please provide a full log output from your device? Make sure that the following are enabled

# Enable logging

CONFIG_LOG=y

CONFIG_MQTT_SIMPLE_LOG_LEVEL_DBG=y

 

Kind regards,
Øyvind

[Mmterkc]

Hi, It same in my prj.conf file

Thanks