1. Bootstrap server host
   Specify the host name of the Kafka cluster bootstrap server (domain name or IP).
2. Bootstrap server port
   Specify the port number of the bootstrap server (commonly 9092 or 9093).
3. Topic name
   Specify the name of the topic that you want to send the message to.
4. Message key
   Optionally specify a key name for the message. If this is left empty, then the message key will have a null value.
5. Truststore path
   Specify the file system path of the truststore to use for SSL communication (only required when using a Kafka SSL endpoint).
6. Truststore password
   Specify the password for the above truststore (only required if the truststore has a password).
7. Keystore path
   Specify the file system path of the keystore to use for client authentication (only required when using a Kafka SSL endpoint that has client authentication enabled).
8. Keystore password
   Specify the password of the above keystore (only required if the keystore has a password).
9. Keystore key password
   Specify the password of the specific key within the keystore (if this is left empty, the keystore password will be used as key password as well).

Both JKS and PKCS12 keystore formats are supported. If the keystore filename has the extension ".p12" or ".pfx" then the keystore is assumed to be PKCS12. Any other extension will be assumed to be a JKS keystore.