MQTT stops responding after fixed number of subscribe and publish

RE: MQTT stops responding after fixed number of subscribe and publish

Jawad — Thu, 12 Jan 2017 08:00:11 GMT

Hi Bjorn, Thanks a lot for the continuous support. I will test the examples also using TLS.

RE: MQTT stops responding after fixed number of subscribe and publish

Jawad — Fri, 06 Jan 2017 15:11:37 GMT

Hi Bjorn,

As you have mentioned there are quite a few changes as compared to previous version e.g. Ipv6 instead of IPv4 etc, plus some new files. Could you please share a running subscribe and publish example similar to one present in SDK v9? Thanks for the help so far.

RE: MQTT stops responding after fixed number of subscribe and publish

Jawad — Fri, 06 Jan 2017 12:46:25 GMT

Thanks for the response Bjorn. I am checking new files and will get back to you.

RE: MQTT stops responding after fixed number of subscribe and publish

bjorn-spockeli — Fri, 06 Jan 2017 11:46:36 GMT

Hi Jawad, the IoT SDK team has done major improvements to the MQTT library of the IoT SDK since the v0.9.x release. I have attached the latest MQTT library files from our internal repo below, could you try to replace the mqtt library and see if that resolves the issue?

Attachments:

mqtt.zip

Update 12.01.17

I've added the mqtt files above to the MQTT publisher and subscriber gcc examples in the IoT SDK and verified that I am able to publish and subscribe to messages using a Raspberry Pi running the Mosquitto broker. I have attached the IoT SDK with the mqtt examples that uses the updated mqtt files.

Note, I've only tested the examples using a non-secure connection, i.e. used the following configuration

#define APP_MQTT_BROKER_PORT             1883
m_app_mqtt_client.transport_type       = MQTT_TRANSPORT_NON_SECURE;
m_app_mqtt_client.p_security_settings  = NULL;

Attachments:

nrf5_iot_sdk_3288530_mqtt.zip

Best regards

Bjørn

RE: MQTT stops responding after fixed number of subscribe and publish

Jawad — Thu, 05 Jan 2017 16:48:32 GMT

Hi Bjorn,

Did you receive any feedback from IoT SDK team? Thanks for the support

RE: MQTT stops responding after fixed number of subscribe and publish

Jawad — Wed, 04 Jan 2017 15:01:05 GMT

Hi Bjorn,

No, the issue is still there. Heap and stack doesnt seem to be the issue. MQTT is still failing after 15 transactions.

Thanks

RE: MQTT stops responding after fixed number of subscribe and publish

bjorn-spockeli — Wed, 04 Jan 2017 14:50:53 GMT

@jawad: I guess this has been answered in this question.

RE: MQTT stops responding after fixed number of subscribe and publish

Jawad — Mon, 02 Jan 2017 15:11:55 GMT

Thanks Bjorn, Just to add, the issue seems very similar to what is explained here i.e. memory leaking. Looking forward to your response

RE: MQTT stops responding after fixed number of subscribe and publish

bjorn-spockeli — Mon, 02 Jan 2017 15:09:40 GMT

Hi Jawad, I am not quite sure how you should debug this, but I will discuss this with the IoT SDK team and come back to you.