[jira] [Closed] (VFS-660) expose workaround for connecting to FTP server from different subnets in PASV mode

["Yubao Liu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/VFS-660?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yubao Liu closed VFS-660.
-------------------------

> expose workaround for connecting to FTP server from different subnets in PASV mode
> ----------------------------------------------------------------------------------
>
>                 Key: VFS-660
>                 URL: https://issues.apache.org/jira/browse/VFS-660
>             Project: Commons VFS
>          Issue Type: Improvement
>    Affects Versions: 1.0
>            Reporter: Yubao Liu
>            Priority: Major
>             Fix For: 2.4
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> [https://github.com/apache/commons-vfs/pull/35]
>  
> In PASV mode, the FTP server returns its server IP (eg. pasv_address in vsftpd.conf),
>  when clients are from different subnets through NAT, they expect different server IP.
> This patch exposes the workaround in commons-ftp into commons-vfs:
>  * use EPSV mode instead of PASV mode, EPSV mode returns only server port
>  * use PASV mode but overwrite the returned server IP with HostnameResolver



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