Perform HTTP operations while maintaining an active MQTT connection

[Tom.Fu]

Hi Support Team 

 Can we perform HTTP operations while maintaining an active MQTT connection using AT commands for nRF9151? Many thanks.

[dejans]

Hi,

Can you elaborate on your use case and application?

Which HTTP operations do you want to perform while active MQTT connection is maintained?

Best regards,
Dejan

[Tom.Fu]

Hi Support Team 

We just want to perform HTTP GET and POST while active MQTT connection is maintained. Many thanks.

[dejans]

Hi,

You can look at modem firmware release notes for limitations.
Among other things mentioned there is that one TLS handshake is supported at a time. If both connections use TLS, they can be open at the same time but they cannot perform TLS handshake at the same time.

Best regards,
Dejan

[Tom.Fu]

Hi Support Team 

So HTTP can perform TLS handshake and HTTP GET and POST can be performed by AT commands after TLS handshake for MQTT and while active MQTT connection is maintained, right? Many thanks.

[dejans]

Hi,

Limitation is related to the number of TLS handshakes. Having a single TLS handshake while maintaining an active MQTT connection should work fine.

Best regards,
Dejan