2.2 Message Syntax

The extensions specified in this document use or reference messages documented in [RFC4217], [RFC2389], [RFC959], and [RFC2228]. The list of existing messages that relate to the File Transfer Protocol over Secure Sockets Layer is as follows:

  • AUTH TLS from [RFC4217]

  • PROT P from [RFC4217]

  • PBSZ 0 from [RFC2228] and [RFC4217]

  • CCC from [RFC4217]

  • REIN from [RFC959]

  • FEAT from [RFC2389]

The AUTH SSL message is introduced in this specification. This new message is fully synonymous with the existing AUTH TLS message.