RFC 1184 (rfc1184) - Page 1 of 23
Telnet Linemode Option
Alternative Format: Original Text Document
Network Working Group Telnet Working Group Request for Comments: 1184 D. Borman, Editor Obsoletes: RFC 1116 Cray Research, Inc. October 1990 Telnet Linemode Option Status of this Memo This memo describes a Draft Standard for the Internet community, and requests discussion and suggestions for improvements. This RFC specifies an IAB standards track protocol for the Internet community. Please refer to the current edition of the "IAB Official Protocol Standards" for the standardization state and status of this protocol. Distribution of this memo is unlimited. Changes from RFC 1116: Two new mode bits have been added, SOFT_TAB and LIT_ECHO. These bits allow the server to give the client some advise on how to echo tabs and non-printable characters. Several new special character mappings have been added for cursor motion when visual editing is supported. These are: Move cursor one character left/right (SLC_MCL/SLC_MCR), move cursor one word left/right (SLC_MCWL/SLC_MCWR), move cursor to begining/end of line (SLC_MCBOL/SLC_MCEOL), enter insert/overstrike mode (SLC_INSRT/SLC_OVER), erase one character/word to the right (SLC_ECR/SLC_EWR), and erase to the beginning/end of the line (SLC_EBOL/SLC_EEOL). Overview Linemode Telnet is a way of doing terminal character processing on the client side of a Telnet connection. While in Linemode with editing enabled for the local side, network traffic is reduced to a couple of packets per command line, rather than a couple of packets per character typed. This is very useful for long delay networks, because the user has local response time while typing the command line, and only incurs the network delays after the command is typed. It is also useful to reduce costs on networks that charge on a per packet basis. Please send comments to the telnet-ietf@cray.com mailing list. Telnet Working Group
