As per Relevance of the word university, we have this rfc below:
Network Working Group G.
Request for Comments: 1096 Carnegie Mellon
March 1989
Telnet X Display Location
Status of This
This RFC specifies a standard for the Internet community. Hosts
the Internet that transmit the X display location within the
protocol are expected to adopt and implement this standard
Distribution of this memo is unlimited
This standard is modelled on RFC 1079 [1], the telnet terminal
option. Much of the text of this document is copied from that RFC
When a user is running the Telnet client under the X window system
it is useful for the remote Telnet to know the X display location
that client. For example, the user might wish to start other
applications from the remote host using the same display location
the Telnet client. The purpose of this option is to make
information available through telnet connections
1. Command Name and
X-DISPLAY-LOCATION (XDISPLOC
Code = 35
2. Command
IAC WILL X-DISPLAY-
Sender is willing to send the X display location in
subsequent sub-negotiation
IAC WON'T X-DISPLAY-
Sender refuses to send the X display location
IAC DO X-DISPLAY-
Sender is willing to receive the X display location in
subsequent sub-negotiation
Marcy [Page 1]
RFC 1096 Telnet X Display Location Option March 1989
IAC DON'T X-DISPLAY-
Sender refuses to accept the X display location
IAC SB X-DISPLAY-LOCATION SEND IAC
Sender requests receiver to transmit his (the receiver's)
display location. The code for SEND is 1. (See below.)
IAC SB X-DISPLAY-LOCATION IS ... IAC
Sender is stating his X display location. The code for IS
0. (See below.)
3.
WON'T X-DISPLAY-
The X display location will not be exchanged
DON'T X-DISPLAY-
The X display location will not be exchanged
4. Description of the
WILL and DO are used only to obtain and grant permission for
discussion. The actual exchange of status information occurs
option subcommands (IAC SB X-DISPLAY-LOCATION...).
Once the two hosts have exchanged a WILL and a DO, the sender of
DO X-DISPLAY-LOCATION is free to request the X display location
Only the sender of the DO may send requests (IAC SB X-DISPLAY
LOCATION SEND IAC SE) and only the sender of the WILL may
actual X display location (within an IAC SB X-DISPLAY-LOCATION IS ...
IAC SE command). The X display location may not be
spontaneously, but only in response to a request
The X display location is an NVT ASCII string. This string
the normal Unix convention used for the DISPLAY environment variable
e.g.,
:[.]
No extraneous characters such as spaces may be included
The following is an example of use of the option
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RFC 1096 Telnet X Display Location Option March 1989
Host1: IAC DO X-DISPLAY-
Host2: IAC WILL X-DISPLAY-
(Host1 is now free to request status information at any time.)
Host1: IAC SB X-DISPLAY-LOCATION SEND IAC
Host2: IAC SB X-DISPLAY-LOCATION IS "SRI-NIC.ARPA:0.0" IAC
(This command is 22 octets.)
5. Implementation
Since the X display location may not contain a hostname on the
host, i.e., ":0" or "unix:0.0", the Telnet client will need to
the location appropriately before sending it on to the remote Telnet
[1] Hedrick, C., "Telnet Terminal Speed Option", RFC 1079,
Rutgers University, December, 1988.
Author's Address
Glenn A.
Carnegie Mellon
School of Computer
Pittsburgh, PA 15213-3890
Phone: (412) 268-7669
Email: Glenn.Marcy@CS.CMU.
Marcy [Page 3]
if you see any problems within the linking, don't worry be happy,
this is version 0.1 of the Relevance System and you gotta expect some crappy subroutines sometimes,
just be content we did not write this in Java, which would have made this "bigger and better" HAHAHHA.
RFC documents can be found at I.E.T.F.
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