Show empty directory for write-only directories

[sajagi]

Server should return an empty directory when directory is configured as write-only.

Currently the server returns an error which is handled ok-ish in some clients (e.g. WinSCP) but causes some clients to drop connection (e.g. FileZilla) altogether.

Whether or not this will be configurable is under consideration.

[Krisby]

Any updates or estimates on this one yet?

[sajagi]

@Krisby I am currently working on this and have working PoC. Unless there's a major obstacle the feature will be available (probably as opt-in) in version 2.16.0.

Also considering a variant where file and directory structure would be visible but no file could be downloaded (or deleted, depending on whether 'delete' permission is enabled). This would fix the awkward behavior when attempting to overwrite existing (invisible) file.