Opened 3 years ago

Closed 3 years ago

#10840 closed Bug report (duplicate)

Round Robin DNS support for SFTP

Reported by: Viljami Kuosmanen Owned by:
Priority: normal Component: FileZilla Client
Keywords: dns, sftp Cc: mokhlesrahma@…
Component version: built from source @r7529 Operating system type: Windows
Operating system version: windows7

Description

There is currently a discrepancy in behaviour between using FTP and SFTP with servers using a Round Robin DNS configuration where a single domain lists multiple IP addresses in its type A or AAAA records.

With FTP, the Filezilla client will attempt to connect each listed IP address until finding a working one for the host, whereas with SFTP, Filezilla will only randomly try a single one and then fail immediately if that one fails.

The vanilla BSD sftp client on the command line will correctly try each IP address until finding a working one. This would be a desireable behaviour for the Filezilla client as well.

See screenshots below displaying different behaviours for FTP and SFTP on a host with round robin DNS configured. FTP tries all 3 hosts, while SFTP only tries to connect to one.

https://seravo.fi/ftp-round-robin.png
https://seravo.fi/sftp-round-robin.png

Change History (2)

comment:1 Changed 3 years ago by wafa kallaibi

Cc: mokhlesrahma@… added
Operating system type: Windows
Operating system version: windows7

comment:2 Changed 3 years ago by Tim Kosse

Resolution: duplicate
Status: newclosed

Same underlying cause as #10712

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