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Feature #11612

closed

The default mode of Net::FTP should be passive

Added by shugo (Shugo Maeda) over 8 years ago. Updated over 8 years ago.

Status:
Closed
Target version:
-
[ruby-core:71146]

Description

The default mode of Net::FTP is active for historical reasons, but it should be changed to passive
because active data connections might be blocked by a local firewall.
Passive data connections might also be blocked by a firewall, but such cases are relatively rare.

In Python, the default mode was changed to passive since Python 2.1.
In Perl, the default mode was changed to passive since libnet-1.21.

One concern is backward compatibility. For example the following code in open-uri.rb wouldn't work
if the default mode is changed.

ftp.passive = true if !options[:ftp_active_mode]

The code has to be changed as follows:

ftp.passive = !options[:ftp_active_mode]

It might be better to check the environment variable FTP_PASSIVE as Perl does.

Any thoughts?

Updated by shugo (Shugo Maeda) over 8 years ago

  • Status changed from Open to Closed

The default mode was changed in r52532.

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