Yubao Liu created VFS-660:
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Summary: 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: 2.2.1
Reporter: Yubao Liu
Fix For: 2.2.1
[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, PASV mode returns only server port
* use PASV mode but overwrite the returned server IP with HostnameResolver
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