[SOLVED] Openhab2 mqtt 2.x doesn't clear the buffer

Hardware DIY
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  • Platform information:
    • Hardware: raspberry 3B
    • OS: raspbian Stretch
    • Java Runtime Environment:
    • openHAB version: 2
  • Issue of the topic:

Hey Community,

i configured my mqtt Server on the Raspi and everything works fine (Communication with ESP8266 - programmed with Arduino ).
But when i first send a long Message like: “this is a text!” over MQTT to my ESP and then write a short message like:“Hello”, than openhab doesn’t clear the buffer and send: “Hellois a text!” .
Does anybody has the same issue?

Thanks

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Please use mqtt.fx or similar to verify that it’s not your arduino program doing it wrong. openHAB is java based, and there is no such think as a buffer or old memory areas.

When we need a string we do new String().

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ah, okay. thanks your right! my mistake.
i took malloc instead of calloc!