As per Relevance of the word datagram, we have this rfc below:

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Network Working Group J.
Request for Comments: 866
May 1983



Active




This RFC specifies a standard for the ARPA Internet community. Hosts
the ARPA Internet that choose to implement an Active Users Protocol
expected to adopt and implement this standard

A useful debugging and measurement tool is an active users service.
active users service simply sends a list of the currently active
on the host without regard to the input

An active user is one logged in, such as listed in SYSTAT or WHO

TCP Based Active Users

One active users service is defined as a connection based
on TCP. A server listens for TCP connections on TCP port 11. Once
connection is established a list of the currently active users
sent out the connection (and any data received is thrown away).
service closes the connection after sending the list

UDP Based Active Users

Another active users service service is defined as a datagram
application on UDP. A server listens for UDP datagrams on UDP
11. When a datagram is received, an answering datagram is
containing a list of the currently active users (the data in
received datagram is ignored).

If the list does not fit in one datagram then send a sequence
datagrams but don't break the information for a user (a line)
a datagram. The user side should wait for a timeout for
datagrams to arrive. Note that they are not necessarily in order

User List

There is no specific syntax for the user list. It is
that it be limited to the ASCII printing characters, space,
return, and line feed. Each user should be listed on a
line






Postel [Page 1]

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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.



Relevance System Copyright © 2002 Spectrum WorldResearch
other technical nosh by ServerMasters Corporation
collaboration of BobX

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