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MQTT Connect -60 error

I've been trying to get the MQTT simple sample started however after changing the hostname to "mqtt.eclipse.org" and running the sample, it stops with this error. Please how do I fix this

Parents
  • Hi,

    Are you using your own MQTT server or opensource server?

    can you check the IP you gave is correct? or opensource server is available or not?

    Regards,

    Nikunj

Reply
  • Hi,

    Are you using your own MQTT server or opensource server?

    can you check the IP you gave is correct? or opensource server is available or not?

    Regards,

    Nikunj

Children
  • I am using an opensource server, test.mosquitto.org

    I have tested using MQTT.fx client and it connects to the same server 

    I have also tested the address and it seems to be correct

  • Hi,

    It looks like you are connecting to an NB-IoT network, is that correct?

    Some NB-IoT networks only support UDP traffic. If that's the case here, it might explain why MQTT doesn't work, as it uses TCP as transport. 

    If you have LTE-M coverage, you could try to switch over and see if that works. If not, you can try the coap_client sample in NCS, which runs on top of UDP, just to get a pointer to if it actually is a TCP vs UDP issue here.

    Also, you can collect trace from the modem, following this tutorial, and attach them here for further analysis.

    Best regards,

    Jan Tore

  • Yes I am limited to only NB-IoT in my region, is there any other samples that run on top of UDP?