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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HTTPCLIENT-1748) When run in java applet, SystemDefaultCredentialsProvider fails to get authentication from Authenticator
Date Sun, 10 Jul 2016 13:41:11 GMT

    [ https://issues.apache.org/jira/browse/HTTPCLIENT-1748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15369644#comment-15369644

ASF GitHub Bot commented on HTTPCLIENT-1748:

GitHub user sebastiencaille opened a pull request:


    HTTPCLIENT-1748: fix for trunk

    as discussed before, here is a patch proposal for the trunk.
    (I added a basic test case)

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/sebastiencaille/httpclient trunk

Alternatively you can review and apply these changes as the patch at:


To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #55
commit 88ea39b476faf777fa2c01e4cb198a67927542e1
Author: Sebastien Caille <sebastien.caille@gmail.com>
Date:   2016-06-24T15:11:34Z

    HTTPCLIENT-1748: fixed proxy hostname so authentication works with java
    applets (started from firefox)

commit 7a87b59e9c20f443e3123425567153204e831453
Author: Sebastien Caille <sebastien.caille@gmail.com>
Date:   2016-06-24T15:19:36Z

    HTTPCLIENT-1748: improved creation of proxy's HttpHost

commit f01cfa4bc82a0b73a723ed5d8fb3b0c5a05f071e
Author: Sebastien Caille <sebastien.caille@gmail.com>
Date:   2016-07-03T12:50:29Z

    HTTPCLIENT-1748: fix for proxy authentication issue / trunk


> When run in java applet, SystemDefaultCredentialsProvider fails to get authentication
from Authenticator
> --------------------------------------------------------------------------------------------------------
>                 Key: HTTPCLIENT-1748
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1748
>             Project: HttpComponents HttpClient
>          Issue Type: Bug
>          Components: HttpClient
>    Affects Versions: 4.5
>         Environment: Windows, application running in a java applet started by firefox,
connection to a remote server via a squid proxy with basic authentication
>            Reporter: S├ębastien Caille
>            Priority: Trivial
> Hello,
> The java applets are deprecated, but the issue may impact other use cases.
> During a POST call made from a java applet via a proxy server with basic authentication,
SystemDefaultCredentialsProvider.getSystemCreds(...) calls Authenticator.requestPasswordAuthentication,
which wrongly returns "null" authentication.
> The java applet console shows that a NullPointerException was ignored.
> I managed to fix the issue by providing the following values to Authenticator.requestPasswordAuthentication
(getSystemCreds is currently providing null for those ones ):
>   prompt = authscope.getRealm()
>   url = context.getAttribute(HttpClientContext.HTTP_TARGET_HOST)
> Both values are needed ( prompt == null && url != null -> dialog box asking
for credentials, prompt != null && url == null -> crashes firefox)
> Note that when downloading the applet jar files, the java is providing values for all
the parameters of Authenticator.requestPasswordAuthentication (according to a breakpoint in
> Thanks

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