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[paho-dev] java.lang.IllegalArgumentException: Invalid UTF-8 char: [a]
Hi Team,
   Kavitha Here.

   Please fill out the form below before submitting, thank you!
  •  Bug exists Release Version 1.2.5 ( Master Branch)

I'm trying to connect with mosquito broker via paho client (versions used are org.eclipse.paho.client.mqttv3-1.2.5.jar and org.eclipse.paho.client.mqttv3-1.2.1.jar)

When I try to connect I'm getting:

2020-09-29 20:43:24.233 12057-12057/com.paho.mqtt W/System.err: Connection lost (32109) - java.lang.IllegalArgumentException: Invalid UTF-8 char: [a]
2020-09-29 20:43:24.233 12057-12057/com.paho.mqtt W/System.err:     at org.eclipse.paho.client.mqttv3.internal.CommsSender.handleRunException(CommsSender.java:194)
2020-09-29 20:43:24.233 12057-12057/com.paho.mqtt W/System.err:     at org.eclipse.paho.client.mqttv3.internal.CommsSender.run(CommsSender.java:171)
2020-09-29 20:43:24.233 12057-12057/com.paho.mqtt W/System.err:     at java.lang.Thread.run(Thread.java:764)
2020-09-29 20:43:24.233 12057-12057/com.paho.mqtt W/System.err: Caused by: java.lang.IllegalArgumentException: Invalid UTF-8 char: [a]
2020-09-29 20:43:24.233 12057-12057/com.paho.mqtt W/System.err:     at org.eclipse.paho.client.mqttv3.internal.wire.MqttWireMessage.validateUTF8String(MqttWireMessage.java:407)
2020-09-29 20:43:24.233 12057-12057/com.paho.mqtt W/System.err:     at org.eclipse.paho.client.mqttv3.internal.wire.MqttWireMessage.encodeUTF8(MqttWireMessage.java:327)
2020-09-29 20:43:24.233 12057-12057/com.paho.mqtt W/System.err:     at org.eclipse.paho.client.mqttv3.internal.wire.MqttConnect.getPayload(MqttConnect.java:154)
2020-09-29 20:43:24.233 12057-12057/com.paho.mqtt W/System.err:     at org.eclipse.paho.client.mqttv3.internal.wire.MqttWireMessage.getHeader(MqttWireMessage.java:142)
2020-09-29 20:43:24.233 12057-12057/com.paho.mqtt W/System.err:     at org.eclipse.paho.client.mqttv3.internal.wire.MqttOutputStream.write(MqttOutputStream.java:74)
2020-09-29 20:43:24.233 12057-12057/com.paho.mqtt W/System.err:     at org.eclipse.paho.client.mqttv3.internal.CommsSender.run(CommsSender.java:147)
2020-09-29 20:43:24.234 12057-12057/com.paho.mqtt W/System.err: 	... 1 more

But I didn't get this issue in org.eclipse.paho.client.mqttv3-1.2.0.jar

Any help to resolve this?

Here is the link of github topic   https://github.com/eclipse/paho.mqtt.java/issues/836




--
Thanks,
Kavitha

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