HFTP
From EverybodyWiki Bios & Wiki
HFTP is a protocol for accessing FTP resources via HTTP proxy. It uses ftp URL scheme in HTTP requests to a proxy.
The notation of HFTP was introduced in Lftp client to distinguish between plain FTP protocol and indirect access via HTTP proxy. Lftp supports hftp URL scheme to select HFTP protocol explicitly.
References
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