Sockets in use
Jon Postel asks which standard programs listen on which socket numbers, and whether some should be reserved.
Postel, J., "Sockets in use", RFC 204, DOI 10.17487/RFC0204, August 1971, <https://www.rfc-editor.org/info/rfc204>.
@misc{rfc204,
series = {Request for Comments},
number = 204,
howpublished = {RFC 204},
publisher = {RFC Editor},
doi = {10.17487/RFC0204},
url = {https://www.rfc-editor.org/info/rfc204},
author = {J. Postel},
title = {{Sockets in use}},
pagetotal = 1,
year = 1971,
month = aug,
} RFC text
Network Working Group Jon Postel
Request for Comments: 204 ULA-NMC
NIC 7196 Comp. Sci.
Categories A.5, C.3, D 5 August 71
Obsoletes: none
Related 196
Sockets in use
I would like to collect information on the use of socket numbers
for "standard" service programs. For example Loggers (telnet servers)
Listen on socket 1. What sockets at your host are Listened to by what
programs?
Recently Dick Watson suggested assigning socket 5 for use by a
mail-box protocol (RFC196). Does any one object ? Are there any
suggestions for a method of assigning sockets to standard programs?
Should a subset of the socket numbers be reserved for use by future
standard protocols?
Please phone or mail your answers and commtents to:
Jon Postel
The SPADE Group
3732 Boelter Hall
Computer Science Dept.
ULA, LA. CA 90024
(213) 825 2368
[ This RFC was put into machine readable form for entry ]
[ into the online RFC archives by Gruss Gottfried 6/97 ]
AI ELI5
On this page
§1Collecting Socket Usage
Jon Postel wants to collect information on socket numbers used by standard service programs. His example is that Loggers (Telnet servers) listen on socket 1. He asks which sockets at each host are listened to by which programs.
He wants a list of which door number each helper program waits at.
§2Proposals and Questions
Dick Watson recently suggested socket 5 for a mail-box protocol (RFC 196), and Postel asks whether anyone objects. He also asks for suggestions on a method for assigning sockets to standard programs, and whether a subset of socket numbers should be reserved for future standard protocols.
Replies are requested by phone or mail to the SPADE Group in the Computer Science Department.
He asks if door 5 can be for mail, how doors should be handed out, and whether some doors should be saved for later.
§3What the RFC Is
RFC 204 is a short note by Jon Postel, dated 5 August 71. It specifies nothing and reserves no sockets. It only gathers information and asks for opinions, and it is marked as related to RFC 196.
It is a question to the neighbors, not a rule. Nothing is decided yet.