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https://issues.apache.org/jira/browse/DIRKRB-645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16116373#comment-16116373
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Lin Zeng commented on DIRKRB-645:
---------------------------------

Hi [~jiajia], I have tested this case, the issue didn't happen when using 
DefaultInternalKdcServerImpl:).

> Start KerbyKdcServer should be failed if kdc_port already in use
> ----------------------------------------------------------------
>
>                 Key: DIRKRB-645
>                 URL: https://issues.apache.org/jira/browse/DIRKRB-645
>             Project: Directory Kerberos
>          Issue Type: Bug
>            Reporter: Lin Zeng
>            Assignee: Lin Zeng
>         Attachments: DIRKRB-645-01.patch
>
>
> Now user can start KerbyKdcServer successfully if kdc_port already in use, 
> and without any error information printed in the console. Then when user run 
> kadmin tool, it will hang there and get the following error after time out:
> {quote}
> Debug is  true storeKey true useTicketCache false useKeyTab true doNotPrompt 
> true ticketCache is null isInitiator true KeyTab is 
> /home/lonnie/文档/IdeaProjects/directory-kerby/kerby-dist/kdc-dist/conf/admin.keytab
>  refreKrb5Config is true principal is kadmin/example....@example.com 
> tryFirstPass is false useFirstPass is false storePass is false clearPass is 
> false
> Refreshing Kerberos configuration
>                 [Krb5LoginModule] authentication failed 
> Receive timed out
> Could not login with: kadmin/EXAMPLE.COM@EXAMPLE.COMReceive timed out
> {quote}
> I think start KerbyKdcServer should be failed if kdc_port already in use.



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