To makes things simpler, I vote for just dropping it completely.
We don't care at all about FTP performance (and IIRC we were caching only for directory listings, and browsing FTP that way is even rarer than clicking on an FTP download). So yes, let's disable cache usage.
Where's the FTP stuff living?
(In reply to Florian Bender from comment #2) > Where's the FTP stuff living? netwerk/protocol/ftp
Created attachment 8570192 [details] [diff] [review] bug_913827_v1.patch
That patch didn't have the bug number in the commit message, and I somehow managed to mistype it when I added it myself. https://hg.mozilla.org/integration/mozilla-inbound/rev/4829b02a11af