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83 messages in org.w3.www-tagRe: draft findings on Unsafe Methods ...| From | Sent On | Attachments |
|---|---|---|
| Dan Connolly | Apr 15, 2002 8:50 am | |
| Larry Masinter | Apr 15, 2002 1:44 pm | |
| David Orchard | Apr 15, 2002 3:01 pm | |
| David Orchard | Apr 15, 2002 3:19 pm | |
| Mark Baker | Apr 15, 2002 8:00 pm | |
| Keith Moore | Apr 15, 2002 8:37 pm | |
| Scott Cantor | Apr 15, 2002 9:28 pm | |
| Edwin Khodabakchian | Apr 15, 2002 9:34 pm | |
| David Orchard | Apr 15, 2002 10:18 pm | |
| Paul Prescod | Apr 15, 2002 11:17 pm | |
| Tim Bray | Apr 15, 2002 11:32 pm | |
| Mark Nottingham | Apr 16, 2002 1:01 am | |
| Tim Bray | Apr 16, 2002 1:02 am | |
| Mark Nottingham | Apr 16, 2002 1:09 am | |
| Paul Prescod | Apr 16, 2002 2:11 am | |
| Paul Prescod | Apr 16, 2002 3:02 am | |
| Mark Baker | Apr 16, 2002 4:54 am | |
| Williams, Stuart | Apr 16, 2002 8:22 am | |
| Keith Moore | Apr 16, 2002 8:32 am | |
| jon...@research.att.com | Apr 16, 2002 8:44 am | |
| Scott Cantor | Apr 16, 2002 8:55 am | |
| Paul Prescod | Apr 16, 2002 9:40 am | |
| Mark Nottingham | Apr 16, 2002 9:42 am | |
| Hutchison, Nigel | Apr 16, 2002 9:43 am | |
| Henrik Frystyk Nielsen | Apr 16, 2002 10:48 am | |
| Bullard, Claude L (Len) | Apr 16, 2002 1:46 pm | |
| Larry Masinter | Apr 16, 2002 6:39 pm | |
| Roy T. Fielding | Apr 16, 2002 7:54 pm | |
| Larry Masinter | Apr 16, 2002 10:10 pm | |
| Graham Klyne | Apr 17, 2002 1:54 am | |
| Paul Prescod | Apr 18, 2002 12:33 am | |
| Graham Klyne | Apr 18, 2002 9:11 am | |
| Alex Rousskov | Apr 18, 2002 9:30 am | |
| Paul Prescod | Apr 18, 2002 9:45 am | |
| Graham Klyne | Apr 18, 2002 11:58 am | |
| Roy T. Fielding | Apr 18, 2002 3:11 pm | |
| Don Box | Apr 18, 2002 6:28 pm | |
| Mark Baker | Apr 18, 2002 8:50 pm | |
| Keith Moore | Apr 18, 2002 8:54 pm | |
| Paul Prescod | Apr 18, 2002 10:00 pm | |
| Graham Klyne | Apr 19, 2002 12:53 am | |
| Bill de hÓra | Apr 19, 2002 4:18 am | |
| Roy T. Fielding | Apr 19, 2002 1:20 pm | |
| Anne Thomas Manes | Apr 22, 2002 3:23 pm | |
| Paul Prescod | Apr 22, 2002 4:01 pm | |
| Anne Thomas Manes | Apr 22, 2002 8:17 pm | |
| Paul Prescod | Apr 22, 2002 10:21 pm | |
| Anne Thomas Manes | Apr 23, 2002 5:36 am | |
| Paul Prescod | Apr 23, 2002 12:03 pm | |
| Paul Prescod | Apr 23, 2002 2:09 pm | |
| Roy T. Fielding | Apr 23, 2002 2:14 pm | |
| Bullard, Claude L (Len) | Apr 23, 2002 2:50 pm | |
| Joshua Allen | Apr 23, 2002 2:53 pm | |
| David Orchard | Apr 23, 2002 4:14 pm | |
| Keith Moore | Apr 23, 2002 5:05 pm | |
| Roy T. Fielding | Apr 23, 2002 5:14 pm | |
| Simon St.Laurent | Apr 23, 2002 5:18 pm | |
| Larry Masinter | Apr 23, 2002 6:31 pm | |
| Mark Baker | Apr 23, 2002 6:36 pm | |
| Paul Prescod | Apr 23, 2002 8:03 pm | |
| Tim Bray | Apr 23, 2002 8:30 pm | |
| Dan Connolly | Apr 23, 2002 9:05 pm | |
| Joshua Allen | Apr 23, 2002 9:10 pm | |
| Anne Thomas Manes | Apr 23, 2002 9:28 pm | |
| Mark Nottingham | Apr 23, 2002 9:42 pm | |
| Jeff Bone | Apr 23, 2002 9:42 pm | |
| Joshua Allen | Apr 23, 2002 10:02 pm | |
| Paul Prescod | Apr 23, 2002 10:05 pm | |
| Joshua Allen | Apr 23, 2002 10:27 pm | |
| Joshua Allen | Apr 23, 2002 10:38 pm | |
| Mark Nottingham | Apr 23, 2002 10:57 pm | |
| Mark Nottingham | Apr 23, 2002 11:16 pm | |
| Joshua Allen | Apr 23, 2002 11:20 pm | |
| Dan Connolly | Apr 23, 2002 11:23 pm | |
| Tim Bray | Apr 23, 2002 11:56 pm | |
| Bullard, Claude L (Len) | Apr 24, 2002 7:23 am | |
| Larry Masinter | Apr 24, 2002 8:47 am | |
| Keith Moore | Apr 24, 2002 10:46 am | |
| Bullard, Claude L (Len) | Apr 24, 2002 10:56 am | |
| Aaron Swartz | Apr 24, 2002 11:27 am | |
| Mike Dierken | Apr 24, 2002 12:06 pm | |
| David Orchard | Apr 25, 2002 10:54 am | |
| Roy T. Fielding | May 5, 2002 3:38 am |
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| Subject: | Re: draft findings on Unsafe Methods (whenToUseGet-7) | Actions... |
|---|---|---|
| From: | Paul Prescod (pa...@prescod.net) | |
| Date: | Apr 18, 2002 9:45:26 am | |
| List: | org.w3.www-tag | |
Graham Klyne wrote:
At 12:34 AM 4/18/02 -0700, Paul Prescod wrote:
- an operation that is idempotent: has no further side effects if repeated after it has been performed once
The HTTP specification uses the term idempotent to mean idempotent.
http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.1.2
PUT is safe but not idempotent.
Yup, what it says there is exactly what I meant. And according to that reference, PUT is idempotent.
Sorry, I meant to say "PUT is idempotent but not safe."
... The section immediately preceding the one you cite mentions "actions they might take which may have an unexpected significance to themselves or others" -- in a web context, it seems to me that any action which changes what is visible on the web is potentially significant, hence my attempt to characterize it in terms of visible side effects.
What if following a link on the Web had the semantic "inject patient with drug". That may not have visible side effects but is still a serious, dangerous side effect. Conversely, incrementing a page hit counter is not dangerous but IS web-visible.
Paul Prescod