[sword-devel] eBible.org OSIS files regenerated again

David Haslam dfhmch at googlemail.com
Wed Jun 26 05:42:37 MST 2013

I'm not consciously using a proxy to access Michael's ftp directory, but this
description might be a possible explanation somewhere along the connection.

*FTP caching*

When the proxy is configured to cache requests, it can cache FTP file
requests as well as HTTP file requests. However, because FTP files do not
contain the same type of header information as HTTP files, expiration dates
for cached FTP files are calculated differently than for other cached files.

When a request is made to the FTP server to retrieve a file, the proxy first
sends to the FTP server a LIST request for the file to obtain FTP directory
information about the file. If the FTP server responds to the LIST request
with a positive completion reply and the directory information for the file,
the proxy creates an HTTP Last-Modified header with the date parsed from the
FTP directory information. The caching function of the proxy then uses this
Last-Modified header, together with the value set in the
CacheLastModifiedFactor directive in the configuration file, to determine
the length of time that the FTP file remains in the cache before expiring.


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