(Oct. 16, 1972)
RFC 407 NIC 12112
Robert Bressler, MIT-DMCG Obsoletes RFC 360
Richard Guida, MIT-DMCG
Alex McKenzie, BBN-NET
REMOTE JOB ENTRY PROTOCOL
REMOTE Job Entry Protocol
(Oct. 16, 1972)
RFC 407 NIC 12112
REMOTE JOB ENTRY PROTOCOL
INTRODUCTION
Remote job entry is the mechanism whereby a user at one location
causes a batch-processing job to be run at some other location. This
protocol specifies the Network standard procedures for such a user to
communicate over the Network with a remote batch-processing server,
causing that server to retrieve a job-input file, process the job,
and deliver the job's output file(s) to a remote location. The
protocol uses a TELNET connection (to a special standardized logger,
not socket 1) for all control communication between the user and the
server RJE processes. The server-site then uses the File Transfer
Protocol to retrieve the job-input file and to deliver the output
file(s).
There are two types of users: direct users (persons) and user
processes. The direct user communicates from an interactive terminal
attached to a TIP or any host. This user may cause the input and/or
output to be retrieved/sent on a specific socket at the specified
host (such as for card readers or printers on a TIP), or the user may
have the files transferred by file-id using File Transfer Protocol.
The other type of user is a RJE User-process in one remote host
communicating with the RJE Server-process in another host. This type
of user ultimately receives its instructions from a human user, but
through some unspecified indirect means. The command and response
streams of this protocol are designed to be readily used and
interpreted by both the human user and the user process.
A particular user site may choose to establish the TELNET control
connection for each logical job or may leave the control connection
open for extended periods. If the control connection is left open,
then multiple job-files may be directed to be retrieved or optionally
(to servers that are able to determine the end of one logical job by
the input stream and form several jobs out of one input file) one
continuous retrieval may be done (as from a TIP card reader). This
then forms a "hot" card reader to a particular server with the TELNET
connection serving as a "job monitor". Since the output is always
transferred job at a time per connection to the output socket, the
output from this "hot" reader would appear when ready as if to a
"hot" printer. Another possibility for more complex hosts is to
attach an RJE User-process to a card reader and take instructions
from a lead control card, causing an RJE control TELNET to be opened
to the appropriate host with appropriate log-on and input retrieval
commands. This card reader would appear to the human user as a
Network "hot" card reader. The details of this RJE User-process are
beyond the scope of this protocol.
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RFC 407 NIC 12112
GENERAL SPECIFICATIONS
User
A human user at a real terminal or a process that supplies the
command control stream causing a job to be submitted remotely will
be termed the User. The procedure by which a process user
receives its instructions is beyond the scope of this protocol.
User TELNET
The User communicates its commands over the Network in Network
Virtual Terminal code through a User TELNET process in the User's
Host. This User TELNET process initiates its activity via ICP to
the standard "RJE Logger" socket (socket 5) at the desired
RJE-server Host.
RJE-Server TELNET
The RJE-server process receives its command stream from and sends
its response stream to the TELNET channel through an RJE-server
TELNET process in the server host. This process must listen for
the ICP on the "RJE Logger" socket (and cause appropriate ICP
socket shifting).
TELNET Connection
The command and response streams for the RJE mechanism are via a
TELNET-like connection to a special socket with full
specifications according to the current NWG TELNET protocol.
RJE-Server
The RJE-Server process resides in the Host which is providing
Remote Batch Job Entry service. This process receives input from
the RJE-server TELNET, controls access through the "log-on"
procedure, retrieves input job files, queues jobs for execution by
the batch system, responds to status inquiries, and transmits job
output files when available.
User FTP
All input and output files are transferred under control of the
RJE-server process at its initiative. These files may be directly
transferred via Request-for-connection to a specific Host/socket
or they may be transferred via File Transfer Protocol. If the
latter method is used, then the RJE-server acts through its local
User FTP process to cause the transfer. This process initiates
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activity by an active Request-for-connection to the "FTP Logger"
in the foreign host.
Server FTP
This process in a remote host (remote from the RJE-server) listens
for an ICP from the User FTP and then acts upon the commands from
the User FTP causing the appropriate file transfer.
FTP
When File Transfer Protocol is used for RJE files, the standard
FTP mechanism is used as fully specified by the current NWG
FTProtocol.
RJE Command Language
The RJE system is controlled by a command stream from the User
over the TELNET connection specifying the user's identity
(log-on), the source of the job input file, the disposition of the
job's output files, enquiring about job status, altering job
status or output disposition. Additional commands affecting
output disposition are includable in the job input file. This
command language is explicitly specified in a following section of
this protocol.
RJE Command Replies
Every command input from the User via TELNET calls for a response
message from the RJE-server to the User over the TELNET
connection. Certain other conditions also require a response
message. These messages are formatted in a standardized manner to
facilitate interpretation by both human Users and User processes.
A following section of this protocol specifies the response
messages.
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RFC 407 NIC 12112
RJE COMMANDS OVER TELNET CONNECTION
GENERAL CONVENTIONS
1. Each of the commands will be contained in one input line
terminated by the standard TELNET "crlf". The line may be of any
length desired by the user (explicitly, not restricted to a
physical terminal line width). The characters "cr" and "lf" will
be ignored by the RJE-server except in the explicit order "crlf"
and may be used as needed for local terminal control.
2. All commands will begin with a recognized command name and may
then contain recognized syntactic element strings and free-form
variable strings (for user-id, file-ids, etc.). Recognized words
consist of alphanumeric strings (letters and digits) or
punctuation. Recognized alphanumeric string elements must be
separated from each other and from unrecognizable strings by at
least one blank or a syntacticly permitted punctuation. Other
blanks may be used freely as desired before or after any syntactic
element ("blank" is understood here to mean ASCII SPACE (octal
040); formally: <blank>::= <blank><ASCII SPACE> | <ASCII SPACE> ;
thus, a sequence of SPACES is also permissible in place of
<blank>, although there is no syntactic necessity for there to be
more than one). The "=" after the command name in all commands
except OUT and CHANGE is optional.
3. Recognized alphanumeric strings may contain upper case letters or
lower case letters in any mixture without syntactic
differentiation. Unrecognizable strings will be used exactly as
presented with full differentiation of upper and lower case input,
unless the host finally using the string defines otherwise.
4. There are two types of Unrecognizable strings: final and
imbedded. Final strings appear as the last syntactic element of a
command and are parsed as beginning with the next non-blank
character of the input stream and continuing to the last non-blank
character before the "crlf".
Imbedded strings include "job-id" and "job-file-id" in the OUT,
CHANGE, and ALTER commands. At present these fields will be left
undelimited since they must only be recognizable by the server host
which hopefully can recognize its own job-ids and file-names.
SYNTAX
The following command descriptions are given in a BNF syntax. Names
within angle brackets are non-terminal syntactic elements which are
expanded in succeeding syntactic equations. Each equation has the
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defined name on the left of the ::= and a set of alternative
definitions, separated by vertical lines "|", on the right.
REINITIALIZE
REINIT
This command puts the user into a state identical to the state
immediately after a successful connection to the RJE-server,
prior to having sent any commands over the TELNET connection.
The effective action taken is that of an ABORT and a flushing
of all INPUT, OUTPUT and ID information. Naturally, the user
is still responsible for any usage charges incurred prior to
his REINIT command. The TELNET connection is not affected in
any way.
USER
User = <user-id>
This command must be the first command over a new TELNET
connection. As such, it initiates a "logon" sequence. The
response to this command is one of the following:
1. User code in error.
2. Enter password (if user code ok).
3. Log-on ok, proceed (if no password requested).
Another USER command may be sent by the User at any time to
change Users. Further input will then be charged to the new
user. A server may refuse to honor a new user command if it is
not able to process it in its current state (during input file
transfer, for example), but the protocol permits the USER
command at any time without altering previous activity. An
incorrect subsequent USER command or its following PASS command
are to be ignored with error response, leaving the original
User logged-in.
It is permissable for a server to close the TELNET connection
if the initial USER/PASS commands are not completed within a
server specified time period. It is not required or implied
that the "logged-on" User's user-id be the one used for file
transfer or job execution, but only identifies the submitter of
the command stream. Servers will establish their own rules
relating user-id with the job-execution-user for Job or Output
alteration commands.
Successful "log-on" always clears any previous Input or Output
default parameters (INID, etc.).
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PASS
Pass = <password>
This command immediately follows a USER command and completes
the "log-on" procedure. Although a particular Server may not
require a password and has already indicated "log-on ok" after
the USER command, every Server must permit a PASS command (and
possibly ignore it) and acknowledge it with a "log-on ok" if
the log-on is completed.
BYE
BYE
This command terminates a USER and requests the RJE server to
close the TELNET connection. If input transfer is not in
progress, the TELNET connection may be closed immediately; if
input is in progress, the connection should remain open for
result response and then be closed. During the interim, a new
USER command (and no other command) is acceptable.
An unexpected close on the TELNET connection will cause the
server to take the effective action of an ABORT and a BYE.
INID/INPASS
INID = <user-id>
INPASS = <password>
The specified user-id and password will be sent in the File
Transfer request to retrieve the input file. These parameters
are not used by the Server in any other way. If this command
does not appear, then the USER/PASS parameters are used.
INPATH/INPUT
INPATH = <file-id>
INPUT = <file-id>
INPUT
NOTE: The following syntax will be used for output as well.
<file-id>::= <host-socket> | <host-file>
<host-socket>::= <host>,<socket><attributes> |
<socket><attributes>
no <host> part implies the User-site host
<host>::= <integer>
<socket>::= <integer>
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<integer>::= D<decimal-integer> | O<octal-integer> |
H<hexadecimal-integer>
<host-file>::= <host><attributes>/<pathname>
<attributes>::= <empty> | :<transmission><code>
<transmission>::= <empty> | T | A | N
<empty> implies default which is N for Input files
and A for Output files
T specifies TELNET-like coding with embedded
"crlf" for new-line, "ff" for new-page
N specifies FTP blocked transfer with record
marks but without other carriage-control
A specifies FTP blocked records with ASA
carriage-control
(column 1 of image is forms control)
<code>::= <empty> | E
<empty> specifies NVT ASCII code
E specifies EBCDIC
<pathname>::= <any string recognized by the FTP Server at
the site of the file>
The <file-id> syntax is the general RJE mechanism for
specifying a particular file source or destination for input or
output. If the <host-socket> form is used then direct transfer
will be made by the RJE-Server to the named socket using the
specified <attributes>. If the <host-file> form is used then
the RJE-server will call upon its local FTP-user process to do
the actual transfer. The data stream in this mode is either
TELNET-like ASCII or blocked records (which may use column 1
for ASA carriage-control). Although A mode is permitted on
input (column 1 is deleted) the usual mode is the default N.
The output supplies carriage-control in the first character of
each record ("blank" = single-space, "1" = new-page, etc.),
while the optional N mode transfers the data only (as to a card
punch, etc.).
The <pathname> is an arbitrary Unrecognized string which is
saved by RJE-server and sent back over FTP to the FTP-server to
retrieve or store the appropriate files.
INPATH or INPUT commands first store the specified <file-id> if
one is supplied, and then the INPUT command initiates input.
The INPATH name may be used to specify a file-id for later
input and the INPUT command without file-id will cause input to
initiate over a previously specified file-id. An INPUT "crlf"
command with no previous <file-id> specified is illegal.
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ABORT
ABORT
This command aborts any input retrieval in progress, discards
already received records, and closes the retrieval connection.
Note: ABORT with parameters is an Output Transmission control
(see below).
OUTUSER/OUTPASS
OUTUSER = <user-id>
OUTPASS = <password>
The specified user-id and password will be sent in the File
Transfer request to send the output file(s). These parameters
are not used by the Server in any other way. If this command
does not appear, then the USER/PASS parameters are used.
OUT
OUT <out-file> = <disp>
<out-file>::= <empty> | <job-file-id>
<empty> implies the primary print file of the job
<job-file-id>::= <string representing a specific output file
from the job as recognized by the Server>
<disp>::= <empty><file-id> | (H) | (S)<file-id>|(D)
<empty> specifies Transmit then discard
(H) specifies Hold-only, do not transmit
(S) specifies Transmit and Save
(D) specifies discard without transmitting
Note: Parentheses are part of the above elements.
<file-id>::= (same as for INPUT command)
This command specifies the disposition of output file(s)
produced by the job. Unspecified files will be Hold-only by
default. The OUTUSER, OUTPASS, and OUT commands must be
specified before the INPUT command to be effective. These
commands will affect any following jobs submitted by this USER
over this RJE-TELNET connection. A particular job may override
these commands by NET control cards on the front of the input
file.
Once output disposition is specified by this OUT command or by
a NET OUT card, the information is kept with the job until
final output disposition, and is modifiable by the CHANGE
command.
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On occasion, the server may find that the destination for the
output is "busy" (i.e., RFC to either Server-FTP or specified
socket is refused), or that the host which should receive the
output is dead. In these cases, the server should wait several
minutes and then try to transmit again.
OUTPUT RE-ROUTE
CHANGE <job-id><blank><out-file> = <disp>
This command changes the output disposition supplied with the
job at submission. The <job-id> is assumed recognizable by the
RJE-server, who may verify if this USER is authorized to modify
the specified job. After the job is identified, the other
information has the same syntax and semantics as the original
OUT command. CHANGE command may be specified for a job-file-id
which was not mentioned at submission time and has the same
effect as an original OUT command.
OUTPUT CONTROLS DURING TRANSMISSION
<command><blank><count><blank><what>
<command>::= RESTART | RECOVER | BACK | SKIP |
ABORT | HOLD
These commands specify (respectively):
Restart the transmission (new RFC, etc.)
Recover restarts transmission from last FTP
Restart-marker-reply
(see FTP).
Back up the output "count" blocks
Skip the output forward "count" blocks
Abort the output, discarding it
Abort the output, but Hold it
<count>::= <empty> | <integer>
<empty> implies 1 where defined
<what>::= @<file-id> | <job-id><job-file-id>
<disp>::= (same as for OUT command)
<file-id>::= (same as for INPUT command)
<integer>::= (same as for INPUT command)
<job-id>::= <server recognized job identifier which was supplied
at INP completion by the server>
<job-file-id>::= <server recognized file identifier or if missing
then the prime printer output of the specified
job>
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This collection of commands will modify the transmission of output
in progress or recently aborted. If output transmission is
cut-off before completion, then the RJE-server will either try to
resend the entire file if the file's <disp> was
Transmit-and-discard or will Hold the file for further User
control if the <disp> was (S) transmit-and-Save. Either during
transmission, during the Save part of a transmit-and-Save, or for
a Hold-only file, the above commands may be used to control the
transmission. The @<file-id> form of <what> is permitted only if
transmission is actually in progress.
If the file's state is inconsistent with the command, then the
command is illegal and ignored with reply.
STATUS
STATUS <job-id>
STATUS <job-id><blank><job-file-id>
These commands request the status of the RJE-server, a
particular job, or the transmission of an output or input file,
respectively. The information content of the Status reply is
site dependent.
CANCEL/ALTER
CANCEL <job-id>
ALTER <job-id><blank><site dependent options>
These commands change the course of a submitted job. CANCEL
specifies that the job is to be immediately terminated and any
output discarded. ALTER provides for system dependent options
such as changing job priority, process limits, Teminate without
Cancel, etc.
OP
OP (any string)
The specified string is to be displayed to the Server site
operator when any following job is initiated from the batch
queue of the Server. This command usually appears in the input
file as a NET OP control card, but may be a TELNET command. It
is cancelled as an all-jobs command by an OP "crlf" command (no
text supplied).
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RJE CONTROL CARDS IN THE INPUT FILE
Certain RJE commands may be specified by control cards in the front
of the input file. If these controls appear, they take precedence
over the same command given thru the RJE-TELNET connection and affect
only this specific job. All these RJE control cards must appear as
the first records of the job's input-file. They all contain the
control word NET in columns 1 through 3. Scanning for these controls
stops when the first card without NET in col 1-3 is encountered.
The control commands appear in individual records and are terminated
by the end-of-record (usually an 80 column card-image). Continuation
is permitted onto the next record by the appearance of NET+ in
columns 1-4 of the next record. Column 5 of the next record
immediately follows the last character of the previous record.
NET OUTUSER = <user-id>
NET OUTPASS = <password>
NET OUT <out-file> = <disp>
NET OP <any string>
See the corresponding TELNET command for details. One option
permitted by the NET OUTUSER and NET OUT controls not possible from
the TELNET connection is specification of different OUTUSERs for
different OUTS, since the TELNET stored and supplies only an initial
OUTUSER, but the controls may change OUTUSERs before each OUT control
is encountered.
RJE USE OF FILE TRANSFER PROTOCOL
Most non-TIP files will be transferred to or from the RJE-server
through the FTP process. RJE-server will call upon its local
FTP-user supplying the Host, File-pathname, User-id, Password, and
Mode of the desired transfer. FTP-user will then connect to its
FTP-server counterpart in the specified host and set up a transfer
path. Data will then flow through the RJE-FTP interface in the
Server, over the Network, from/to the foreign FTP-server and then
from/to the specified File-pathname in the foreign host's file
storage space. On output files, the file-pathname may be recognized
by the foreign host as directions to a printer or the file may simply
be stored; a User-RJE-process can supply an output <file-id> by
default which is recognized by its own Server-FTP as routing to a
printer.
Although many specifics of the RJE-Server/User-FTP interface are
going to be site dependent, there are several FTP options which will
be used in a standard way by RJE-Servers:
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1. A new FTP connection will be initiated for each file to be
transferred. The connection will be opened with the RJE User
supplied User-id (OUTUSER or INUSER) and Password.
2. The data bytesize will be 8 bits.
3. The FTP Type, Structure, and Mode parameters are determined by
the RJE transfer direction (I/O), and the <transmission> and
<code> options supplied by the User:
I/O <TRANS> <CODE> FTP-TYPE FTP-STRUCTURE FTP-MODE
I* N - A R B
I N E E R B
I T - A F S
I T E E F S
I A - P R B
I A E F R B
O* A - P R B
O A E F R B
O N - A R B
O N E E R B
O T - A F S
O T E E F S
(*indicates default)
4. The service commands used will be Retrieve for input and Append
(with create) for output. The FTP pathname will be the
<pathname> supplied by the RJE User.
5. On output in B form, the User-FTP at the RJE-Server site will
send Restart-markers at periodic intervals (like every 100
lines, or so), and will remember the latest
Restart-marker-reply with the file. If the file transfer is
not completed and the <disp> is (S) then the file will be held
pending User intervention. The User may then use the RECOVER
command to cause a FTP restart at the last remembered
Restart-marker-reply.
6. The FTP Abort command will be used for the RJE ABORT and CANCEL
commands.
7. For transfers where the FTP-MODE is defined as B, the user FTP
may optionally attempt to use H mode.
The specific form of the FTP commands used by an RJE-Server site, and
the order in which they are used will not be specified in this
protocol.
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Errors encountered by FTP fall into three categories: a) access
errors or no storage space error; b) command format errors; and c)
transfer failure errors. Since the commands are created by the
RJE-Server process, an error is a programming problem and should be
logged for attention and the situation handled as safely as possible.
Transmission failure or access failure on input cause an effective
ABORT and user notification. Transmission failure on output causes
RESTART or Save depending on <disp> (see OUT command). Access
failure on output is a problem since the User may not be accessible.
A status response should be queued for him, should he happen to
inquire; a <disp> = (S) file should be Held; and a <disp> = <empty>
transmit-and-discard file should be temporarily held and then
discarded if not claimed. "Temporarily" is understood here to mean
at least several days, since particularly in the case of jobs which
generate voluminous output at great expense to the User, he should be
given every chance to retrieve his rightful output. Servers may
elect, however, to charge the User for the file-storage space
occupied by the held output.
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REPLIES OVER THE TELNET CONNECTION
Each action of the RJE-server, including entry of each TELNET
command, is noted over the TELNET connection to the User. These
RJE-server replies are formatted for Human or Process interpretation.
They consist of a leading 3-digit numeric code followed by a blank
followed by a text explanation of the message. The numeric codes are
assigned by groups for future expansion to hopefully cover other
protocols besides RJE (like FTP). The numeric code is designed for
ease of interpretation by processes. The three digits of the code
are interpreted as follows:
The first digit specified the "type" of response indicated:
000
These "replies" are purely informative, and are issued
voluntarily by the Server to inform a User of some state of the
server's system.
100
Replies to a specific status inquiry. These replies serve as
both information and as acknowledgment of the status request.
200
Positive acknowledgment of some previous command/request. The
reply 200 is a generalized "ok" for commands which require no
other comment. Other 2xx replies are specified for specific
successful actions.
300
Incomplete information supplied so far. No major problem, but
activity cannot proceed with the input specified.
400
Unsuccessful reply. A request was correctly specified, but
could not be correctly completed. Further attempts will
require User commands.
500
Incorrect or illegal command. The command or its parameters
were invalid or incomplete from a syntactic view, or the
command is inconsistent with a previous command. The command
in question has been totally ignored.
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600-900
Reserved for expansion
The second digit specifies the general subject to which the response
refers:
x00-x29
General purpose replies, not assignable to other subjects.
x30
Primary access. These replies refer to the attempt to "log-on"
to a Server service (RJE, FTP, etc.).
x40
Secondary access. The primary Server is commenting on its
ability to access a secondary service (RJE must log-on to a
remote FTP service).
x50
FTP results.
x60
RJE results.
x70-x99
Reserved for expansion.
The final digit specifies a particular message type. Since the code
is designed for an automaton process to interpret, it is not
necessary for every variation of a reply to have a unique number,
only that the basic meaning have a unique number. The text of a
reply can explain the specific reason for the reply to a human User.
Each TELNET line (ended by "crlf") from the Server is intended to be
a complete reply message. If it is necessary to continue the text of
a reply onto following lines, then those continuation replies contain
the special reply code of three blanks.
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The assigned reply codes relating to RJE are:
000 General information message (time of day, etc.)
030 Server availability information
050 FTP commentary or user information
060 RJE or Batch system commentary or information
100 System status reply
150 File status reply
151 Directory listing reply
160 RJE system general status reply
161 RJE job status reply
200 Last command received ok
201 An ABORT has terminated activity, as requested
202 ABORT request ignored, no activity in progress
203 The requested Transmission Control has taken effect
204 A REINIT command has been executed, as requested
230 Log-on completed
231 Log-off completed, goodbye.
232 Log-off noted, will complete when transfer done
240 File transfer has started
250 FTP File transfer started ok
251 FTP Restart-marker-reply
Text is: MARK yyyy = mmmm
where yyyy is data stream marker value (yours)
and mmmm is receiver's equivalent mark (mine)
252 FTP transfer completed ok
253 Rename completed
254 Delete completed
260 Job <job-id> accepted for processing
261 Job <job-id> completed, awaiting output transfer
262 Job <job-id> Cancelled as requested
263 Job <job-id> Altered as requested to state <status>
264 Job <job-id>,<job-file-id> transmission in progress
300 Connection greeting message, awaiting input
301 Current command not completed (may be sent after
suitable delay, if not "crlf")
330 Enter password (may be sent with hide-your-input mode)
360 INPUT has never specified an INPATH
400 This service is not implemented
401 This service is not accepting log-on now, goodbye.
430 Log-on time or tries exceeded, goodbye.
431 Log-on unsuccessful, user and/or password invalid
432 User not valid for this service
434 Log-out forced by operator action, please phone site
435 Log-out forced by system problem
436 Service shutting down, goodbye
440 RJE could not log-on to remote FTP for input transfer
441 RJE could not access the specified input file thru FTP
442 RJE could not establish <host-socket> input connection
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RFC 407 NIC 12112
443 RJE could not log-on to remote FTP for output delivery
444 RJE could not access file space given for output
445 RJE could not establish <host-socket> output connection
450 FTP: The named file does not exist (or access denied)
451 FTP: The named file space not accessable by YOU
452 FTP: Transfer not completed, data connection closed
453 FTP: Transfer not completed, insufficient storage space
460 Job input not completed, ABORT performed
461 Job format not acceptable for processing, Cancelled
462 Job previously accepted has mysteriously been lost
463 Job previously accepted did not complete
464 Job-id referenced by STATUS, CANCEL, ALTER, CHANGE, or
Transmission Control is not known (or access denied)
465 Request Alteration is not permitted for the specified job
466 Un-deliverable, un-claimed output for <job-id> discarded
467 Requested REINIT not accomplished
500 Last command line completely unrecognized
501 Syntax of the last command is incorrect
502 Last command incomplete, parameters missing
503 Last command invalid, illegal parameter combination
504 Last command invalid, action not possible at this time
505 Last command conflicts illegally with previous command(s)
506 Requested action not implemented by this Server
507 Job <job-id> last command line completely unrecognized
508 Job <job-id> syntax of the last command is incorrect
509 Job <job-id> last command incomplete, parameters missing
510 Job <job-id> last command invalid, illegal parameter
combination
511 Job <job-id> last command invalid, action impossible at
this time
512 Job <job-id> last command conflicts illegally with previous
command(s)
SEQUENCING OF COMMANDS AND REPLIES
The communication between the User and Server is intended to be an
alternating dialogue. As such, the User issues an RJE command and
the Server responds with a prompt primary reply. The User should
wait for this initial success or failure response before sending
further commands.
A second type of reply is sent by Server asynchronously with respect
to User commands. These replies report on the progress of a job
submission caused by the INPUT command and as such are secondary
replies to that command.
The final class of Server "replies" are strictly informational and
may arrive at any time. These "replies" are listed below as
spontaneous.
17
REMOTE Job Entry Protocol
(Oct. 16, 1972)
RFC 407 NIC 12112
COMMAND-REPLY CORRESPONDENCE TABLE
COMMAND SUCCESS FAILURE
REINIT 204 467,500-505
USER 230,330 430-432,500-505
PASS 230 430-432,500-505
BYE 231,232 500-505
INID 200 500-505
INPASS 200 500-505
INPATH 200 500-505
INPUT 240 360,440-442,500-505
sec. input retrieval 260 460,461
sec. job execution 261 462,463
sec. output transmission - 443-445,466
ABORT (input) 201,202 500-505
OUTUSER 200 500-505
OUTPASS 200 500-505
OUT 200 500-505
CHANGE 200 500-505
RESTART/RECOVER/BACK
/SKIP/ABORT (output)/HOLD 203 464,500-506
STATUS 1xx,264 460-465,500-505
CANCEL 262 464,500-506
ALTER 263 464,465,500-506
OP 200 500-505
Spontaneous 0xx,300,301 434-436
Note: For commands appearing on cards, a separate set of error codes
is provided (507-512). Since these error replies are
"asynchronously" sent, and thus could cause some confusion if the
user is in the process of submitting a new job after the present one,
the error replies must identify which job has the faulty card(s).
18
REMOTE Job Entry Protocol
(Oct. 16, 1972)
RFC 407 NIC 12112
TYPICAL RJE SCENARIOS
TIP USER WANTING HOT CARD READER TO HOSTX
1. TIP user opens TELNET connection to HOSTX socket 5
2. Commands sent over TELNET to RJE
USER=myself
PASS=dorwssap
OUT=H70002
INPUT=H50003
3. RJE-server connects to the TIP's device 5 and begins
reading. When end-of-job card is recognized, the job is
queued to run. The connection to the card reader is still
open for more input as another job.
4. The first job finishes. A connection to the TIP's device 7
is established by RJE-server and the output is sent as an
NVT stream.
5. Continue at any time with another deck at step 3.
TIP WITH JOB-AT-A-TIME CARD READER
1. thru 4) the same but User closes Reader after the deck
2. The output finishes and the printer connection closes.
3. INPUT may be typed any time after step 3 finishes and
another job will be entered starting at 3.
19
REMOTE Job Entry Protocol
(Oct. 16, 1972)
RFC 407 NIC 12112
HOSTA USER RUNS JOB AT HOSTC, INPUT FROM HOSTB
1. User TELNET connects to HOSTC socket 5 for RJE
USER=roundabout
PASS=aaabbbc
OUTUSER=roundab1
OUT=:E/.sysprinter
OUT puncher = (S)HOSTB:NE/my.savepunch
INUSER=rounder
INPASS=x.x.x
INPUT=HOSTB:E/my.jobinput
2. The RJE-server has FTP retrieve the input from HOSTB using
User-id of "rounder" and Password of "x.x.x" for file named
"my.jobinput".
3. The job finishes. RJE-server uses FTP to send two files:
the print output is sent to HOSTA in EBCDIC with ASA
carriage control to file ".sysprinter" while the file known
as "puncher" is sent to HOSTB in EBCDIC without
carriage-control to file "my.savepunch".
4. when the outputs finish, RJE-server at HOSTC discards the
print file but retains the "puncher" file.
5. The User who has signed out after job submission has gotten
his output and checked his file "my.savepunch" at HOSTB. He
deletes the saved copy at HOSTC by re-calling RJE at HOSTC.
USER=roundabout
PASS=aaabbbcc
ABORT job 123 puncher
or
CHANGE job 123 puncher = (D)
20
