nrf 91650 DK mqtt-simple - getaddrinfo fails randomly.

RE: nrf 91650 DK mqtt-simple - getaddrinfo fails randomly.

Bjørn Kvaale — Thu, 18 Jul 2019 08:57:03 GMT

Have you tried the at client example? Are you able to get a stable connection there? Have you tried different SIM cards?

RE: nrf 91650 DK mqtt-simple - getaddrinfo fails randomly.

publius — Wed, 17 Jul 2019 15:25:49 GMT

Hey Bjorn, thanks for the reply.

I have successfully connected to different brokers, but either way, the error is occurring *before* any mqtt logic. The success of getaddrinfo is (or should be) independent of the mqtt broker.

My best guess is the lte link request returns prematurely sometimes, before the data session is established or before the routes are configured, leading the application to timeout on network calls.

RE: nrf 91650 DK mqtt-simple - getaddrinfo fails randomly.

Bjørn Kvaale — Mon, 15 Jul 2019 09:05:33 GMT

In the documentation, it says the following about this example: "Public MQTT brokers might be unstable. If you experience problems connecting to the MQTT broker, try switching to another broker by changing the value of the MQTT_BROKER_HOSTNAMEconfiguration option." Have you tried with a different mqtt broker?

I have noticed very similar behavior previously too.