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https://issues.apache.org/jira/browse/CAMEL-6853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Claus Ibsen resolved CAMEL-6853.
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Resolution: Fixed
Thanks for reporting and the patch.
> UnsafeUriCharactersEncoder is missing hex digits
> ------------------------------------------------
>
> Key: CAMEL-6853
> URL: https://issues.apache.org/jira/browse/CAMEL-6853
> Project: Camel
> Issue Type: Bug
> Components: camel-core
> Affects Versions: 2.12.1
> Reporter: Thomas Konstantinides
> Assignee: Claus Ibsen
> Fix For: 2.11.3, 2.12.2, 2.13.0
>
> Attachments: UnsafeUriCharactersEncoder.patch
>
>
> The class org.apache.camel.util.UnsafeUriCharactersEncoder in camel-core has
> a char[] HEX_DIGITS which includes hex digits that can be used in encoded
> urls following the % sign. However the char[] only contains the uppercase
> hexadecimal digits 'A' through 'F' which (following RFC 3986, chapter 2.1)
> are equivalent to the lowercase digits 'a' through 'f' in percent-encoding
> used in URIs.
> So the char[] should also contain the lowercase digits 'a' through 'f',
> because otherwise the class does not work correctly in cases where URLs with
> already encoded characters having lowercase hex digits are encoded (e.g. URL
> with %3c). For these URLs the % sign is encoded once again (making it %253c
> in the example).
> The provided patch adds the lowercase hex digits to the HEX_DIGITS char[].
> Regards,
> Thomas
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