javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?

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    javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
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    javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
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    javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?

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Root Cause Analysis

  1. javax.net.ssl.SSLException

    Unrecognized SSL message, plaintext connection?

    at sun.security.ssl.EngineInputRecord.bytesInCompletePacket()
  2. Java JSSE
    SSLEngineImpl.unwrap
    1. sun.security.ssl.EngineInputRecord.bytesInCompletePacket(EngineInputRecord.java:171)
    2. sun.security.ssl.SSLEngineImpl.readNetRecord(SSLEngineImpl.java:845)
    3. sun.security.ssl.SSLEngineImpl.unwrap(SSLEngineImpl.java:758)
    3 frames
  3. Java RT
    SSLEngine.unwrap
    1. javax.net.ssl.SSLEngine.unwrap(SSLEngine.java:624)
    1 frame
  4. Apache Kafka
    Selector.poll
    1. org.apache.kafka.common.network.SslTransportLayer.handshakeUnwrap(SslTransportLayer.java:408)
    2. org.apache.kafka.common.network.SslTransportLayer.handshake(SslTransportLayer.java:269)
    3. org.apache.kafka.common.network.KafkaChannel.prepare(KafkaChannel.java:68)
    4. org.apache.kafka.common.network.Selector.poll(Selector.java:281)
    4 frames
  5. Apache Kafka
    Processor.run
    1. kafka.network.Processor.run(SocketServer.scala:413)
    1 frame
  6. Java RT
    Thread.run
    1. java.lang.Thread.run(Thread.java:722)
    1 frame