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https://issues.apache.org/jira/browse/HTTPCLIENT-1968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16758183#comment-16758183
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Clinton Gormley commented on HTTPCLIENT-1968:
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If you have a path like `/foo//bar2F`and you wanted to normalise that, you
would:
* split on `/` which would result in `[ "foo", "", "bar%2F", ]`
* normalise the string, eg remove the empty string, resulting in `[ "foo",
"bar%2F"]`
* join with `/` and prepend `/`, resulting in `"/foo/bar%2F"`
> Encoded forward slashes are not preserved when rewriting URI
> ------------------------------------------------------------
>
> Key: HTTPCLIENT-1968
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1968
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Affects Versions: 4.5.7
> Reporter: Jay Modi
> Priority: Major
> Attachments: rewrite_preserve_forward_slash.diff
>
>
> URIs that contain an encoded forward slash (%2F) are no longer preserved when
> the HTTP client executes. I came across this when upgrading from 4.5.2 to
> 4.5.7 and my requests that contained an encoded forward slash suddenly
> started failing. The appears to be due to decoding and re-encoding of the
> path that takes place in the URIUtils#rewriteURI method. I've attached a
> patch that restores the old behavior but if a URI contains two slashes in a
> row in addition to an encoded slash the encoded forward slash will be decoded.
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