rfc640.txt

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          x5z   File system - These replies indicate the status of
                  the Server file system vis-a-vis the requested
                  transfer or other file system action.                 11g6

       The third digit gives a finer gradation of meaning in each of
       the function categories, specified by the second digit.  The
       list of replies below will illustrate this.  Note that the
       text associated with each reply is suggestive, rather than
       mandatory, and may even change according to the command with
       which it is associated.  The reply codes, on the other hand,
       should strictly follow the specifications in the last section;
       that is, Server implementations should not invent new codes
       for situations that are only slightly different from the ones
       described here, but rather should adapt codes already defined.

    NWG/RFC# 640                               JBP NJN 5-JUN-74 16:07  30843
    Neigus                                       FTP Reply Codes  [6]



       If additional codes are found to be necessary, the details
       should be submitted to the FTP committee, through Jon Postel.     11h

          A command such as TYPE or ALLO whose successful execution
          does not offer the user-process any new information will
          cause a 200 reply to be returned.  If the command is not
          implemented by a particular Server-FTP process because it
          has no relevance to that computer system, for example ALLO
          at a TENEX site, a Positive Completion reply is still
          desired so that the simple User-process knows it can
          proceed with its course of action.  A 202 reply is used in
          this case with, for example, the reply text:  "No storage
          allocation necessary."  If, on the other hand, the command
          requests a non-site-specific action and is unimplemented,
          the response is 502.  A refinement of that is the 504 reply
          for a command that IS implemented, but that requests an
          unimplemented parameter.                                      11h1
                                                                         11i
          200  Command okay                                             11i1
          500  Syntax error, command unrecognized
                  [This may include errors such as command line too
                  long.]                                                11i2
          501  Syntax error in parameters or arguments                  11i3
          202  Command not imlemented, superfluous at this site.        11i4
          502  Command not implemented                                  11i5
          503  Bad sequence of commands                                 11i6
          504  Command not implemented for that parameter               11i7
                                                                         11j
          110  Restart marker reply.
                  In this case the text is exact and not left to the
                  particular implementation; it must read:
                               MARK yyyy = mmmm
                  where yyyy is User-process data stream marker, and
                  mmmm is Server's equivalent marker.  (note the
                  spaces between the markers and "=".)                  11j1
          211  System status, or system help reply                      11j2
          212  Directory status                                         11j3
          213  File status                                              11j4
          214  Help message (on how to use the server or the meaning
                  of a particular non-standard command.  This reply
                  is useful only to the human user.)                    11j5
                                                                         11k
          120  Service ready in nnn minutes                             11k1
          220  Service ready for new user                               11k2
          221  Service closing TELNET connection (logged off if
                  appropriate)                                          11k3
          421  Service not available, closing TELNET connection.
                  [This may be a reply to any command if the service
                  knows it must shut down.]                             11k4

    NWG/RFC# 640                               JBP NJN 5-JUN-74 16:07  30843
    Neigus                                       FTP Reply Codes  [7]



          125  Data connection already open; transfer starting          11k5
          225  Data connection open; no transfer in progress            11k6
          425  Can't open data connection                               11k7
          226  Closing data connection; requested file action
                  successful (for example, file transfer or file
                  abort.)                                               11k8
          426  Connection trouble, closed; transfer aborted.            11k9
          227  Entering [passive, active] mode                         11k10
                                                                         11l
          230  User logged on, proceed                                  11l1
          530  Not logged in                                            11l2
          331  User name okay, need password                            11l3
          332  Need account for login                                   11l4
          532  Need account for storing files                           11l5
                                                                         11m
          150  File status okay; about to open data connection.         11m1
          250  Requested file action okay, completed.                   11m2
          350  Requested file action pending further information        11m3
          450  Requested file action not taken: file unavailable
                  (e.g. file not found, no access)                      11m4
          550  Requested action not taken:  file unavailable (e.g.
                  file busy)                                            11m5
          451  Requested action aborted: local error in processing      11m6
          452  Requested action not taken:  insufficient storage
                  space in system                                       11m7
          552  Requested file action aborted:  exceeded storage
                  allocation (for current directory or dataset)         11m8
          553  Requested action not taken: file name not allowed        11m9
          354  Start mail input; end with <CR><LF>.<CR><LF>            11m10




                          Command-Reply Sequences                         12


     In this section, the command-reply sequence is presented.  Each
    command is listed with its possible replies; command groups are
    listed together.  Preliminary replies are listed first (with
    their succeeding replies under them), then positive and negative
    completion, and finally intermediary replies with the remaining
    commands from the sequence following.  This listing forms the
    basis for the state diagrams, which will be presented separately.     13

       ICP                                                               13a
          120                                                           13a1
             220                                                       13a1a
          220                                                           13a2
          421                                                           13a3

    NWG/RFC# 640                               JBP NJN 5-JUN-74 16:07  30843
    Neigus                                       FTP Reply Codes  [8]



       Logon                                                             13b

          USER                                                          13b1
             230                                                       13b1a
             530                                                       13b1b
             500, 501, 421                                             13b1c
             331, 332                                                  13b1d
          PASS                                                          13b2
             230                                                       13b2a
             202                                                       13b2b
             530                                                       13b2c
             500, 501, 503, 421                                        13b2d
             332                                                       13b2e
          ACCT                                                          13b3
             230                                                       13b3a
             202                                                       13b3b
             530                                                       13b3c
             500, 501, 503, 421                                        13b3d

       Logoff                                                            13c

          QUIT                                                          13c1
             221                                                       13c1a
             500                                                       13c1b
          REIN                                                          13c2
             120                                                       13c2a
                220                                                   13c2a1
             220                                                       13c2b
             421                                                       13c2c
             500, 502                                                  13c2d

       Transfer parameters                                               13d

          SOCK                                                          13d1
             200                                                       13d1a
             500, 501, 421, 530                                        13d1b
          PASV                                                          13d2
             227                                                       13d2a
             500, 501, 502, 421, 530                                   13d2b
          ACTV                                                          13d3
             227                                                       13d3a
             202                                                       13d3b
             500, 501, 421, 530                                        13d3c
          BYTE, MODE, TYPE, STRU                                        13d4
             200                                                       13d4a
             500, 501, 504, 421, 530                                   13d4b

    NWG/RFC# 640                               JBP NJN 5-JUN-74 16:07  30843
    Neigus                                       FTP Reply Codes  [9]



       File action commands                                              13e

          ALLO                                                          13e1
             200                                                       13e1a
             202                                                       13e1b
             500, 501, 504, 421, 530                                   13e1c
          REST                                                          13e2
             500, 501, 502, 421, 530                                   13e2a
             350                                                       13e2b
          STOR                                                          13e3
             125, 150                                                  13e3a
                (110)                                                 13e3a1
                226, 250                                              13e3a2
                425, 426, 451, 552                                    13e3a3
             532, 450, 452, 553                                        13e3b
             500, 501, 421, 530                                        13e3c
          RETR                                                          13e4
             125, 150                                                  13e4a
                (110)                                                 13e4a1
                226, 250                                              13e4a2
                425, 426, 451                                         13e4a3
             450, 550                                                  13e4b
             500, 501, 421, 530                                        13e4c
          LIST, NLST                                                    13e5
             125, 150                                                  13e5a
                226, 250                                              13e5a1
                425, 426, 451                                         13e5a2
             450                                                       13e5b
             500, 501, 502, 421, 530                                   13e5c
          APPE                                                          13e6
             125, 150                                                  13e6a
                (110)                                                 13e6a1
                226, 250                                              13e6a2
                425, 426, 451, 552                                    13e6a3
             532, 450, 550, 452, 553                                   13e6b
             500, 501, 502, 421, 530                                   13e6c
          MLFL                                                          13e7
             125, 150                                                  13e7a
                226, 250                                              13e7a1
                425, 426, 451, 552                                    13e7a2
             532, 450, 550, 452, 553                                   13e7b
             500, 501, 502, 421, 530                                   13e7c
          RNFR                                                          13e8
             450, 550                                                  13e8a
             500, 501, 502, 421, 530                                   13e8b
             350                                                       13e8c
          RNTO                                                          13e9
             250                                                       13e9a
             532, 553                                                  13e9b

    NWG/RFC# 640                               JBP NJN 5-JUN-74 16:07  30843
    Neigus                                      FTP Reply Codes  [10]



             500, 501, 502, 503, 421, 530                              13e9c
          DELE                                                         13e10
             250                                                      13e10a
             450, 550                                                 13e10b
             500, 501, 502, 421, 530                                  13e10c
          ABOR                                                         13e11
             225, 226                                                 13e11a
             500, 501, 502, 421                                       13e11b
          MAIL                                                         13e12
             354                                                      13e12a
                250                                                  13e12a1
                451, 552                                             13e12a2
             450, 550, 452, 553                                       13e12b
             500, 501, 502, 421, 530                                  13e12c

       Informational commands                                            13f