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https://issues.apache.org/jira/browse/KAFKA-4570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15880002#comment-15880002
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dongeforever commented on KAFKA-4570:
-------------------------------------

[~ewendland] it seems that I can use sasl to authenticate the channel and ssl 
to encrypt the data.  

For every user, they may provider their user name and password, and the broker 
sasl server to verify it.

> How to transfer extended fields in producing or consuming requests.
> -------------------------------------------------------------------
>
>                 Key: KAFKA-4570
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4570
>             Project: Kafka
>          Issue Type: Wish
>          Components: clients, core, security
>    Affects Versions: 0.10.1.1
>            Reporter: dongeforever
>            Priority: Critical
>              Labels: features
>
> We encounter a problem that  we can not transfer extended fields for 
> producing or consuming requests to the broker.
> We want to validate  the producers or consumers in a custom way other than 
> using SSL.
> In general, such as JMS, it is possible to transfer user-related fields to 
> server.
> But it seems that Kafka dose not support this, its protocol is very tight and 
>  unable to add user-defined fields.
> So is there any way  achieving this goal ?



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