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Posted to issues@commons.apache.org by "Erick Lichtas (JIRA)" <ji...@apache.org> on 2011/04/13 17:08:05 UTC

[jira] [Updated] (NET-354) FTPSClient not properly supporting CCC and PROT P

     [ https://issues.apache.org/jira/browse/NET-354?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Erick Lichtas updated NET-354:
------------------------------

    Attachment: CCCTester.java

Sample program to connect to an FTPS server, set the data channel protection level, run the CCC command, and list the home directory.

> FTPSClient not properly supporting CCC and PROT P
> -------------------------------------------------
>
>                 Key: NET-354
>                 URL: https://issues.apache.org/jira/browse/NET-354
>             Project: Commons Net
>          Issue Type: Bug
>          Components: FTP
>    Affects Versions: 2.2
>         Environment: Applies to all environments
>            Reporter: Leif John Korshavn
>             Fix For: 3.0
>
>         Attachments: CCCTester.java, CCC_bugs_in_FTPSClient.patch
>
>
> FTPSClient does not behave properly after issuing CCC (Clear Command Channel). Proper behaviour is to close SSLSocket, but keep underlying connection without SSL open.
> To achieve this, the SSLSocket should be created with "false", like this on line 255 (of FTPSClient v2.2)
> SSLSocket socket =
> (SSLSocket) ssf.createSocket(_socket_, ip, port, false);
> Furthermore, on sendCommand CCC, sslSocket must be closed before setting _socket = _plainsocket on line 493:
>    _socket.close();
>    _socket = _plainsocket;
>    ...
> And finally, it is wrong to set socket factory to null on line 500 of the same method; this is set properly in exexPROT and should not be reset on CCC.

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