Regarding MQTT client not receiving data from device

Question

Hi,

we are sending json object comprising of following data. 
1. time
2. sensor_a0
3. ecg

Format for json data is [{"time":["2023-6-27-13:15:37","2023-6-27-13:15:37","2023-6-27-13:15:37","2023-6-27-13:15:37","2023-6-27-13:15:37","2023-6-27-13:15:37","2023-6-27-13:15:37","2023-6-27-13:15:37"],"sensor_a0":[0,1,2,3,4,5,6,7],"ecg":[0,0,0,-65533,-65534,-65535,-131069,-131071]}].

As you can see i am transmitting arrays of time, sensor_a0 and ecg as a single json object over mqtt. This works well up to 5 data samples. but when i tried to send more than 5 data samples to aws, it is not receiving anything. I have tested it by myself. I have checked documentation of aws that says that single object that aws iot core can receive json object having maximum size of 128KB.

Accepted Answer

I have found the solution. it is having limit set in pubsubclient library. not on AWS side.
Thanks

Answer

Hi
I am using aws iot core mqtt client. I am using esp32 as a device and send data using mqtt protocol. i am able to see output on my consol but when i see this output on aws, i am not getting anything. as i told you, for more than 5 msgs, i wont get anything.

Regarding MQTT client not receiving data from device

Relevant content