Connect fails org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.1.1

[jpvirolainen]

Today suddenly AWSIotMqttClient::connect started failing with:
com.amazonaws.services.iot.client.AWSIotException: null
at com.amazonaws.services.iot.client.core.AwsIotCompletion.get(AwsIotCompletion.java:213) ~[hdm-push-server-1.3.1-standalone.jar:1.3.1]
at com.amazonaws.services.iot.client.core.AbstractAwsIotClient.connect(AbstractAwsIotClient.java:112) ~[hdm-push-server-1.3.1-standalone.jar:1.3.1]
at com.amazonaws.services.iot.client.AWSIotMqttClient.connect(AWSIotMqttClient.java:501) ~[hdm-push-server-1.3.1-standalone.jar:1.3.1]
at com.amazonaws.services.iot.client.core.AbstractAwsIotClient.connect(AbstractAwsIotClient.java:93) ~[hdm-push-server-1.3.1-standalone.jar:1.3.1]
at com.amazonaws.services.iot.client.AWSIotMqttClient.connect(AWSIotMqttClient.java:463) ~[hdm-push-server-1.3.1-standalone.jar:1.3.1]

It seems org.eclipse.paho.client.mqttv3 got upgraded from 1.1.0 to 1.1.1. When forced back to 1.1.0 the connection works again

[fengsongAWS]

Hi @jpvirolainen ,
We are aware of this issue and this is an error thrown by paho mqtt v1.1.1.
This error seems to be related to the changes they made in this function: https://github.com/eclipse/paho.mqtt.java/blob/562593c35d6079bc55dc60cabdcb81cea30f4d7b/org.eclipse.paho.client.mqttv3/src/main/java/org/eclipse/paho/client/mqttv3/internal/websocket/WebSocketHandshake.java#L83

Please revert back to v1.1.0 for now and we will work on this in the future release.

Thanks

[knechtandreas]

Found out that my issue over here (https://forums.aws.amazon.com/thread.jspa?messageID=775065) was also caused by this... downgrading fixed the problem.

[knechtandreas]

For gradle this did the trick:

compile('com.amazonaws:aws-iot-device-sdk-java:1.0.1') {
exclude group: 'org.eclipse.paho', module: 'org.eclipse.paho.client.mqttv3'
}
compile 'org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.1.0'

[fengsongAWS]

Hi,

Thanks for the suggestions.
We have Java SDK v1.1.0 which explicitly depends on paho v1.1.0 so it will not pull down the latest paho.

Thanks again for your interest in AWS IoT Device SDK.

[Typhlosaurus]

@knechtandreas this may be a simpler change to your gradle:

dependencies {
    // mqttv3 1.1.1 fails to connect for unknown reasons
    compile (group: 'org.eclipse.paho', name: 'org.eclipse.paho.client.mqttv3', version: '1.1.0'){force = true}
    compile 'com.amazonaws:aws-iot-device-sdk-java:1.1.0'
    ...

Also see: eclipse/paho.mqtt.java#345