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Connect to Azure IOT - exception 32109 [message #1796305]

Wed, 10 October 2018 07:08

Paolo Cornacchia

Messages: 1
Registered: October 2018

Junior Member

I am trying to use Paho MQTT Java for connecting to azure iot hub.
I connect sucessful to IoT-Hub and I publish connectly data to endpoint devices/{client ID}/messages/events.
I have a problem when subscrive to endpoint devices/{client ID}/messages/deviceBound/#.
When subscription send I obtain this exception:
Connection lost (32109) - java.io.EOFException
at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:146)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.EOFException
at java.io.DataInputStream.readByte(Unknown Source)
at org.eclipse.paho.client.mqttv3.internal.wire.MqttInputStream.readMqttWireMessage(MqttInputStream.java:65)
at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:107)

Extracted from my source:

MqttFactory factory;

private void connect() {
try {
factory.setHostname("xxx.azure-devices.net");
factory.setPort(8883);
factory.setClientId("myClient");
factory.setUsername("");
factory.setPassword("");
factory.setPrimaryKey("81ODMIS/bMAjPS+GNnDJ6w8M36ISLcAa+HgzZVZ7WXa+");
factory.setUseSasToken(true);
factory.connect();
}
....
}
private void publish() {
try {
factory.setPubTopic("devices/myClient/messages/events/");
factory.setContent("test");
factory.publish();
}
.....
}

private void subscribe() {
try {
factory.setSubTopic(devices/myClient/messages/devicebound/#);
factory.subscribe();
}
......
}

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Re: Connect to Azure IOT - exception 32109 [message #1796415 is a reply to message #1796305]

Fri, 12 October 2018 14:36

James Sutton

Messages: 71
Registered: July 2015

Member

Hi,

What do you see if you look up the disconnection following these instructions: https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-troubleshoot-connectivity

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Re: Connect to Azure IOT - exception 32109 [message #1800654 is a reply to message #1796415]

Fri, 04 January 2019 13:44

Gerred Jhon

Messages: 6
Registered: August 2018

Junior Member

Mentioned below article will help you in resolving the issue as we are using MQTT Azure client which helps to send the data of wireless temperature sensor to Azure IoT hub and create stream analytics using Power Bi

https://ncd.io/getting-started-with-microsoft-azure-and-wireless-temperature-humidity-sensor/

[Updated on: Fri, 04 January 2019 13:47]

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