[ 
https://jira.codehaus.org/browse/WAGON-405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=334473#comment-334473
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Konrad Windszus edited comment on WAGON-405 at 10/21/13 8:54 AM:
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I can even see that preemptive authentication is not enabled in the code: 
https://github.com/apache/maven-wagon/blob/wagon-2.4/wagon-providers/wagon-http-shared4/src/main/java/org/apache/maven/wagon/shared/http4/AbstractHttpClientWagon.java#L416
 or 
https://github.com/apache/maven-wagon/blob/master/wagon-providers/wagon-http/src/main/java/org/apache/maven/wagon/providers/http/AbstractHttpClientWagon.java#L345.
 Please compare with 
http://hc.apache.org/httpcomponents-client-ga/tutorial/html/authentication.html 
on how to enable preemptive authentication.

                
      was (Author: kwin):
    I can even see that preemptive authentication is no enabled in the code: 
https://github.com/apache/maven-wagon/blob/wagon-2.4/wagon-providers/wagon-http-shared4/src/main/java/org/apache/maven/wagon/shared/http4/AbstractHttpClientWagon.java#L416
 or 
https://github.com/apache/maven-wagon/blob/master/wagon-providers/wagon-http/src/main/java/org/apache/maven/wagon/providers/http/AbstractHttpClientWagon.java#L345.
 Please compare with 
http://hc.apache.org/httpcomponents-client-ga/tutorial/html/authentication.html 
on how to enable preemptive authentication.

                  
> Preemptive authentication still not working with Maven 3.0.4+
> -------------------------------------------------------------
>
>                 Key: WAGON-405
>                 URL: https://jira.codehaus.org/browse/WAGON-405
>             Project: Maven Wagon
>          Issue Type: Bug
>            Reporter: Konrad Windszus
>         Attachments: WAGON-405-MVN3.1.1.log
>
>
> Although by default the preemptive authentication should work now with Maven 
> 3.0.4, a wireshare dump exposes, that each request for downloading a new 
> dependency does not initially come with the authentication header. Only after 
>  Nexus replied with a 401 the right credentials are set in the authentication 
> header. According to [1], since Maven 3.0.4 the default HTTP wagon uses 
> preemptive authentication which cannot be disabled [2]. Even with Maven 3.1.1 
> it does not work.
> [1] - http://maven.apache.org/guides/mini/guide-http-settings.html#Maven_3.0.4
> [2] - 
> http://maven.40175.n5.nabble.com/Maven-3-0-4-preemptive-auth-problem-tt5470892.html#none

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