Cannot connect to AWS IoT core: "Exception while decoding CONNACK: remaining length too short"

[alex-vovk]

Expected behavior

Connected to the AWS IoT Core and subscribed to the topic.

Actual behavior

Connection fails. The following output is provided:

Client '[email protected]' sending CONNECT MqttConnect{keepAlive=60, cleanStart=true, sessionExpiryInterval=0}
Client '[email protected]' DISCONNECTED Exception while decoding CONNACK: remaining length too short
Exception while decoding CONNACK: remaining length too short

To Reproduce

Steps

Run from the terminal: mqtt-cli.exe subscribe --topic "#" --showTopics --host private-endpoint.us-east-1.amazonaws.com --port 8883 --secure --cert certificate.pem.crt --key private.pem.key --verbose --debug

Reproducer code

Details

• Affected MQTT CLI version(s):
• Used JVM version:

4.5.1
Picocli 4.5.0
JVM: 14 (Oracle Corporation Java HotSpot(TM) 64-Bit Server VM 14+36-1461)
OS: Windows 10 10.0 amd64

Workaround

Add switch to MQTT 3 and set QOS to 0 by adding the following parameters: '--mqttVersion 3 --qos 0' For example: mqtt-cli.exe subscribe --topic "#" --showTopics --host private-endpoint.us-east-1.amazonaws.com --port 8883 --secure --cert certificate.pem.crt --key private.pem.key --verbose --debug --mqttVersion 3 --qos 0