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- NWG/RFC# 278 RWW 17-NOV-71 14:12 8056
- Revision of the Mail Box Protocol
-
- NETWORK WORKING GROUP Abhay Bhushan, MIT-DMCG
- Request for Comments #278 Bob Braden, UCLA-CCN
- NIC 8056 Eric Harslem, RAND
- Categories: A.5, O.7 John Heafner, RAND
- Obsoletes RFC 221, NIC 7612 Alex McKenzie, BBN-NET
- John Melvin, SRI-ARC
- Bob Sundberg, HARV
- Dick Watson, SRI-ARC
- Jim White, UCSB
- 17-Nov-1971
-
- REVISION OF THE MAIL BOX PROTOCOL
-
- The file transfer committee met and discussed the Mail Box Protocol
- RFC 221, NIC 7612. The potential utility for the mechanism was
- confirmed and a couple of changes suggested. We first give the
- changes and then restate the Protocol.
-
- CHANGES
-
- 1) The Mail Box Protocol is only to allow ASCII stings of text
- formatted for a network standard line printer rather than allowing
- other data types.
-
- 2) A new command is to be added to the File Transfer Protocol called
- "Append With Create" which appends to a file if the file exists, and
- creates a file if it does not exist.
-
- 3) The standard path name for the mailbox is to be, using conventional
- metalanguage symbols,
-
- "MAIL" <separator> ("PRINTER"/<ident>)
-
- <separator> is the ASCII GS, octal 035. The semantics of
- the above are the following:
-
- <ident> is a NIC IDENT
-
- "MAIL" <separator> "PRINTER" would be interpreted by the
- receiving site as meaning Append With Create the
- transmitted file to a bulk mail file to be printed or
- directly output it to a printer.
-
- "MAIL" <separator> <ident> would be interpreted to mean
- either
-
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- [Page 1]
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- NWG/RFC# 278 RWW 17-NOV-71 14:12 8056
- Revision of the Mail Box Protocol
-
- 1) The same as "MAIL" <separator> "PRINTER" i.e., ignore
- <ident> or
-
- 2) Append With Create the following file to a file
- specifically for the person designated by <ident> for
- either online access or printing or both.
-
- The problem of delivering mail to TIPs was discussed.
-
- At the moment TIPs support only the Telnet Protocol, but it is planned
- to support the Data Transfer Protocol. TIPs will have an ASCII line
- printer available as an optional device. People desiring to send a
- mail item to a TIP with a printer can open a standard published socket
- and transmit to it with Telnet Protocol now, later also with the Data
- Transfer Protocol. The NIC's plans with regard to TIPs is not to do
- automatic network delivery to them. Messages to people using TIPs can
- be sent to them through the NIC and will be delivered as with everyone
- else directly to the person's initial file at the NIC. The TIP user
- can read the item online or obtain a hardcopy at his terminal with the
- Output Device Teletype command of NLS.
-
- MAIL BOX PROTOCOL
-
- The Mail Box Protocol will use established network conventions,
- specifically the Network Control Program, Initial Connection Protocol,
- Data Transfer Protocol, and File Transfer Protocol (as described in
- current Network Protocols, NIC 7104).
-
- The transmission is to be Network ASCII. The standard receiving mail
- printer is assumed to have a print line 72 characters wide, and a page
- of 66 lines. The new line convention will be carriage return (Hex
- per the Telnet Protocol, RFC 158, NIC 6768. The standard printer will
- accept form feed character (Hex '0C') (Octal '014') as meaning move
- paper to the top of a new page.
-
- It is the sender's responsibility to control the length of the print
- line and page. If more than 72 characters per line are sent, or if
- more than 66 line are sent without a form feed, then the receiving
- site can handle these situations as appropriate for them. These
- conventions can be changed by control codes as described below. At
- the head of the message or document sent there is to be two copies of
- an initial address string each terminated by a form feed. This
- address string is to contain the sender's name and address, and the
-
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- [Page 2]
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- NWG/RFC# 278 RWW 17-NOV-71 14:12 8056
- Revision of the Mail Box Protocol
-
- receiver's name and address formatted in some reasonable, easy-to read
- form for a clerk to read and distribute. Comments could also be
- included in the address string. The requirements for two copies are
- to make one readable from a fan fold paper stack without effort.
-
- Initial Connection
-
- Initial Connection will be as per the Official Initial Connection
- Protocol, Document #2, NIC 7101, to the standard File Transfer socket
- #3.
-
- File Transfer
-
- The mail item (file) to be transferred would be transferred according
- to the File Transfer Protocol.
-
- As per the File Transfer Protocol, a file (mail item) can be sent in
- more than one data transaction as defined in the Data Transfer
- Protocol. End of file is indicated by the file separator (as defined
- in Data Transfer Protocol) or by closing the connection.
-
- Order of Transactions
-
- The only basic operation required is an Append With Create
-
- Append With Create Request
-
- (Mailer) User --------------------> Server (Mail Box)
-
- <File - data>
-
- -------------------->
-
- End of File indication
-
- -------------------->
-
- Acknowledge
-
- <--------------------
-
- The data type default is network ASCII. The Standard line printer
- default is as defined above. Other control transactions can be used.
-
- CONTROL TRANSACTIONS TO BE USED
-
-
-
-
- [Page 3]
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- NWG/RFC# 278 RWW 17-NOV-71 14:12 8056
- Revision of the Mail Box Protocol
-
- OP CODE
-
- Hex Octal
-
- 09 011 Error or unsuccessful terminate
-
- 0A 012 Acknowledge or successful terminate
-
- 05 005 Append With Create request (add to
- existing file or create file if
- none exists)
-
- 5A 132 Change printer control settings
-
- ERROR CODES
-
- All error codes defined in the file Transfer Protocol could be
- returned.
-
- PRINTER CONTROL CODES
-
- Hex Octal
-
- D1 321 Meaning: Set line width to 72 characters
-
- D2 322 Meaning: Use the full width of your printer
-
- 03 323 Meaning: Set page size to 66 line
-
- 04 324 Meaning: Set page size to infinite
-
- Other virtual printer control codes can be added in the future.
-
- Other classes of control codes can be added as the need arises.
-
-
- [ This RFC was put into machine readable form for entry ]
- [ into the online RFC archives by BBN Corp. under the ]
- [ direction of Alex McKenzie. 12/96 ]
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- [Page 4]
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