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https://issues.apache.org/jira/browse/NET-422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13114844#comment-13114844
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Magnus Johansson commented on NET-422:
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I ran into this problem in one of my projects and have attached a patch for it
to this issue.
Fix summary:
* _openDataConnection_ now acutely try to establish the connection through the
proxy. (The implementation now reuses the parse functions for the "pasv"
response from FTPClient so they have been made protected)
* connect now calls super._connectAction_() to get the member variable
initialization right
* Added the "Host" header to the proxy connect call, its required by some
proxies
* Fixed the user/password if-statement and base64 encoding issues in
tunnelHandshake, which was also noted by Tomas in the last comment
* (Also added some new switches to the examples.ftp.FTPClientExample so that it
can be used to test the FTPHTTPClient impl as well)
I have tested the patch against BlueCoat and Squid proxy installations
successfully
Hope the patch can be of some use
Regards,
Magnus
> FTP using HTTP proxy not working
> --------------------------------
>
> Key: NET-422
> URL: https://issues.apache.org/jira/browse/NET-422
> Project: Commons Net
> Issue Type: Bug
> Components: FTP
> Affects Versions: 3.0.1
> Environment: java version "1.6.0_26"
> Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
> Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02, mixed mode)
> Linux cattie 2.6.38-10-generic #46-Ubuntu SMP Tue Jun 28 15:07:17 UTC 2011
> x86_64 x86_64 x86_64 GNU/Linux
> Reporter: Tomas Mysik
> Attachments: FtpHttpClient.patch
>
>
> I know that FTPHTTPClient is experimental, but - I have discovered 2 bugs in
> it:
> - response from proxy is taken only if username and password are set
> - username and response are not correctly provided to Base64.encode() method
> I will attach a patch with proposed fix, feel free to apply it if you think
> it's correct.
> One more note: I'm not expert in this area so sorry if this question is
> nonsense but - shouldn't it be possible to connect to the encrypted FTP over
> HTTP proxy as well? Or am I completely wrong and this can't be ever possible.
> Thanks.
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