Issue with MQTT-SN Gateway connection

RE: Issue with MQTT-SN Gateway connection

rogerarchibald — Fri, 22 Nov 2019 02:04:07 GMT

Edvin,

I was trying to follow the example on InfoCenter and with the 192.41.30.241 address that was the default on the Pi image I wasn't able to connect. I mistakenly tried to use iot.ecliplse.org rather than MQTT.eclipse.org for the BrokerName. Now I'm using the domain MQTT.eclipse.org and everything is looking good.

I appreciate your assistance here and apologize for taking your time on something so silly.

RE: Issue with MQTT-SN Gateway connection

Edvin — Thu, 21 Nov 2019 07:39:08 GMT

I get a different IP address when I lookup the iot.eclipse.org. Can you please let me know what guide you try to follow? I am not sure exactly what you are trying to do, or where you got your IP address or the iot.eclipse.org domain from..

RE: Issue with MQTT-SN Gateway connection

rogerarchibald — Tue, 19 Nov 2019 02:17:29 GMT

I'm working with the examples right out of the box with the SDK and the Raspberry Pi image. The included 'paho-mqtt-sn-gateway.conf' has the BrokerName as 192.41.30.241. I've tried changing that to 'iot.eclipse.org' without any change in the results.

RE: Issue with MQTT-SN Gateway connection

Edvin — Mon, 18 Nov 2019 11:45:54 GMT

Hello,

Can you reach the IP from your computer? Try to ping the address. If there is no route to it, then you will not be able to reach it from the DK/RPi. Maybe the IP of the destination you are trying to reach has changed?

BR,

Edvin

RE: Issue with MQTT-SN Gateway connection

rogerarchibald — Fri, 15 Nov 2019 01:11:25 GMT

I've tried restarting paho on the Pi and I see the following when watching the terminal as I try to connect the DK:

20191115 010110.088 PahoGateway-01 has been started.

 ConfigFile: /etc/paho-mqtt-sn-gateway.conf
 SensorN/W:   Gateway Port: 47193 Broadcast Address: ff03::1 Interface: wpan0
 Broker:     198.41.30.241 : 1883, 8883
 RootCApath: (null)
 RootCAfile: (null)
 CertKey:    (null)
 PrivateKey: (null)

20191115 010131.225   SEARCHGW          <---  Client                              01 01
20191115 010131.225   GWINFO            --->  Clients                             02 01

20191115 010143.058   CONNECT           <---  nRF52840_publisher                  04 04 01 00 3C 6E 52 46 35 32 38 34 30 5F 70 75 62 6C 69 73 68 65 72
Error: BrokerSendTask: nRF52840_publisher can't connect to the broker. errno=113 No route to host

I'm unable to ping 198.41.30.241 from the Pi, although I can ping it from my desktop.

I'm sure my ignorance towards networking is on full display, but if anybody has any tips I'd really appreciate it.