Connection between Kepserver (Kepware) and Hive MQ

HiveMQ Community Edition
#1

Hello everybody,

since a long time, i am trying to bring up a mqtt secure-connection between a KEPServer EX6 an the HiveMQ Cloud, but i get always the message ‘TCP/TLS connect failure’ and i don’t kno why.

TLS/SSL is active, Port is 8883, Firewall is down. I trieded to generate a certifacte and imported that, with any results.
A connection to the public hive, without secure, works.

Perhaps someone has experience with this software.

#2

Hi Carsten,

and welcome to our HiveMQ community! In case if you are using MQTT CLI client, you can connect to your HiveMQ Cloud cluster like this:

mqtt sub -i subscriber -t "#" -s -h 18b93f452b8445ba86ac0ec6d2228eb9.s2.eu.hivemq.cloud -p 8883 -u HiveUser1 -pw HiveUser1 -J -d

mqtt pub -i publisher -t "interesting/topic" -m "hello" -s -h 18b93f452b8445ba86ac0ec6d2228eb9.s2.eu.hivemq.cloud -p 8883 -u HiveUser1 -pw HiveUser1

The -s or --secure flag indicates to use TLS, the -u user and -pw password are needed to authorise the client to your cluster.

In case if your client device requires a server certificate, you can get one with openssl s_client tool as described in our FAQ here: Frequently Asked Questions

I hope this helps, if you are further questions please let me know.

Kind regards,
Dasha from HiveMQ Team

#3

Hi Carsten

I have installed a KEPserver and for me it works using the following settings:

  1. URL: ssl://18b93f452b8445ba86ac0ec6d2228eb9.s2.eu.hivemq.cloud:8883
  2. Username, password == my cluster user&pass

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Using Java version 1.8. TLS versions supported by the Java: TLS1.2 and TLS1.3.

Please check if your settings are different and send us a screenshot.

Thanks,
Dasha from HiveMQ Team

#4

Hello Daria,

i have tried your suggestions, without success.
I always get this fault message:

Datum Zeit Ebene Quelle Ereignis
08.02.2022 09:47:27 Warnung MQTT Client Fehler bei Verbindungsherstellung zum MQTT-Server. | Kanal = ‘MQTT’, Server = ‘ssl://969334f7758940b68647532c8b86c46a.s1.eu.hivemq.cloud:8883’, Grund = ‘TCP/TLS connect failure’.

Thanks for your help,

Kind regards
Carsten

#5

Good evening,

after many attempts, i came to the conclusion that you have to use the IoT-Gateway-Function.
Looks like the Connectivity-Function only works with a local mqtt-broker.

Greetings

Carsten

#6

Hi fun surfer,

You are correct: this is about the IoT-Gateway driver.

Regards,
Dasha from HiveMQ Team