August 2002
- TECH: Path MTU Discovery Eli Stevens
- Matt's java problems.... Adam
- Non-traditional monsters? Jack Britt
- Non-traditional monsters? Brandon J. Van Every
- Non-traditional monsters? Jack Britt
- Non-traditional monsters? Brandon J. Van Every
- Non-traditional monsters? Jack Britt
- Non-traditional monsters? Kwon Ekstrom
- Non-traditional monsters? eric
- Non-traditional monsters? Brandon J. Van Every
- Non-traditional monsters? Damion Schubert
- Non-traditional monsters? Bruce Mitchener
- Non-traditional monsters? Edward Glowacki
- Non-traditional monsters? szii@sziisoft.com
- Non-traditional monsters? Nathan F. Yospe
- OT: Gen Con? Michael Tresca
- Unique items vs. item references Brian Hook
- Unique items vs. item references Vincent Archer
- Unique items vs. item references shren
- Unique items vs. item references Brandon J. Van Every
- Unique items vs. item references lynx@lynx.purrsia.com
- Unique items vs. item references Bruce Mitchener
- Unique items vs. item references Brandon J. Van Every
- Unique items vs. item references fred@clift.org
- Unique items vs. item references shren
- Unique items vs. item references Brandon J. Van Every
- Unique items vs. item references Damion Schubert
- Unique items vs. item references Freeman, Jeff
- Unique items vs. item references Harrok
- Unique items vs. item references Zach Collins {Siege}
- Unique items vs. item references fred@clift.org
- Unique items vs. item references Vincent Archer
- Unique items vs. item references Koster, Raph
- Unique items vs. item references Dave Rickey
- Unique items vs. item references Vincent Archer
- Unique items vs. item references Dave Rickey
- Unique items vs. item references Daniel.Harman@barclayscapital.com
- Unique items vs. item references Sean Kelly
- Unique items vs. item references Damion Schubert
- Unique items vs. item references Smith, David {Lynchburg}
- Unique items vs. item references Sean Kelly
- Character skill amplifying player skill Brian Hook
- Character skill amplifying player skill Daniel.Harman@barclayscapital.com
- Character skill amplifying player skill Ling Lo
- narrative Bruce Mitchener
- narrative Brandon J. Van Every
- narrative Robert Zubek
- narrative Brandon J. Van Every
- narrative Sasha Hart
- narrative Benjamin Tolputt
- [Fwd: [Algorithms] ANNOUNCE: updated Chunked LOD demo] Bruce Mitchener
- (no subject) Jack Britt
- (no subject) Brandon J. Van Every
- (no subject) Jack Britt
- (no subject) Jeff Lindsey
- (no subject) Karl Bastiman
- (no subject) Zach Collins {Siege}
- Advertising Thread Rayzam
- Advertising Thread Brandon J. Van Every
- Advertising Thread Matt Mihaly
- Advertising Thread Brandon J. Van Every
- Advertising Thread Russ Whiteman
- Advertising Thread Koster, Raph
- Advertising Thread Russ Whiteman
- Advertising Thread Kristen Koster
- Advertising Thread Rayzam
- Advertising Thread Brandon J. Van Every
- Advertising Thread Shannon Appelcline
- Advertising Thread Brandon J. Van Every
- Advertising Thread Rayzam
- Advertising Thread Matt Mihaly
- Advertising Thread Daniel.Harman@barclayscapital.com
- Advertising Thread Brandon J. Van Every
- Advertising Thread Daniel.Harman@barclayscapital.com
- Advertising Thread Matt Mihaly
- Advertising Thread Jeremy Noetzelman
- Advertising Thread Amanda Walker
- Advertising Thread Matt Mihaly
- Advertising Thread Jeremy Gaffney
- Advertising Thread Matt Mihaly
- Advertising Thread Michael Tresca
- Advertising Thread Dave Rickey
- Advertising Thread Matt Mihaly
- skills (was (no subject)) Travis Casey
- The total DBMS approach (was: Unique items vs. item references) Derek Licciardi
- The total DBMS approach (was: Unique items vs. item references) Crosbie Fitch
- The total DBMS approach (was: Unique items vs. item references) Valerio Santinelli
- The total DBMS approach (was: Unique items vs. item references) Russ Whiteman
- Socket Code Stephen Miller
- Socket Code Smith, David {Lynchburg}
- Socket Code Blane Bramble
- Origins of "carebear" Koster, Raph
- Origins of "carebear" Steve {Bloo} Daniels
- Origins of "carebear" Koster, Raph
- Origins of "carebear" Madrona Tree
- Origins of "carebear" Calandryll
- Origins of "carebear" Dave Trump
- Origins of "carebear" Koster, Raph
- The total DBMS approach Aaron "the mad man" Weeks
- The total DBMS approach Derek Licciardi
- The total DBMS approach Hanz, Rob
- The total DBMS approach Daniel.Harman@barclayscapital.com
- The total DBMS approach Sean Kelly
- The total DBMS approach Hanz, Rob
- The total DBMS approach Elia Mòˆrling
- The total DBMS approach Daniel.Harman@barclayscapital.com
- The total DBMS approach Ian Macintosh
- Otherland Richard A. Bartle
- Efficiency in providing entertainment John Buehler
- Noncombat(and combat) skills WAS: (no subject) "Arnau Rossell=?US-ASCII?Q?=F3?= Castell=?US-ASCII?Q?=F3?="< arocas@alumni.uv.es>
- Mountaineering and Athletics Brandon J. Van Every
- Mountaineering and Athletics Damion Schubert
- Mountaineering and Athletics John Buehler
- Mountaineering and Athletics Poe, Lawrence
- Mountaineering and Athletics Vincent Archer
- Noncombat(and combat) skills Jo Dillon
- Noncombat(and combat) skills "Arnau Rossell=?US-ASCII?Q?=F3?= Castell=?US-ASCII?Q?=F3?="< arocas@alumni.uv.es>
- They fight! And bite! They fight and bite and fight! Fight fight fight! Bite bite bite! Jack Britt
- They fight! And bite! They fight and bite and fight! Fight fight fight! Bite bite bite! Brandon J. Van Every
- They fight! And bite! They fight and bite and fight! Fight fight fight! Bite bite bite! Artovil
- They fight! And bite! They fight and bite and fight! Fight fight fight! Bite bite bite! Zach Collins {Siege}
- What Ever Happened to Imaginary Realities? Phillip Lenhardt
- What Ever Happened to Imaginary Realities? Richard A. Bartle
- Butterfly.net Matt Mihaly
- Butterfly.net Freeman, Jeff
- Butterfly.net Luca Girardo
- Butterfly.net Luca Girardo
- Mythology Articles Shannon Appelcline
- Item handling (was: Advertising Thread) Jeff Lindsey
- Advertising Thread Brad McQuaid
- Advertising Thread Brandon J. Van Every
- Advertising Thread Damion Schubert
- Advertising Thread Marc Bowden
- Advertising Thread Damion Schubert
- Advertising Thread Richard Aihoshi aka Jonric
- Advertising Thread Russ Whiteman
- Advertising Thread Brad McQuaid
- Advertising Thread Dave Rickey
- Advertising Thread Marc LaFleur
- Advertising Thread Koster, Raph
- Advertising Thread Marc LaFleur
- Advertising Thread Koster, Raph
- Advertising Thread Richard Aihoshi aka Jonric
- Advertising Thread Zach Collins {Siege}
- Advertising Thread Ron Gabbard
- Advertising Thread Richard Aihoshi aka Jonric
- Social Networks Dave Rickey
- Social Networks Brian 'Psychochild' Green
- Social Networks Dave Rickey
- Social Networks Brian 'Psychochild' Green
- Social Networks Bruce Mitchener
- Social Networks Harrok
- Social Networks Freeman, Jeff
- Social Networks Sage
- Social Networks Damion Schubert
- Social Networks Matt Mihaly
- Social Networks Harrok
- Social Networks Matt Mihaly
- Social Networks Tess Snider
- Social Networks Paul Schwanz
- Social Networks Bruce Mitchener
- Social Networks Paul Schwanz
- Social Networks Michael Tresca
- Social Networks Marian Griffith
- Social Networks Zach Collins {Siege}
- Social Networks Freeman, Jeff
- Social Networks Koster, Raph
- Social Networks Dave Rickey
- Social Networks Sasha Hart
- Social Networks Dave Rickey
- Social Networks Koster, Raph
- Social Networks Dave Rickey
- Social Networks Koster, Raph
- Social Networks Dave Rickey
- Social Networks Freeman, Jeff
- Social Networks Jeff Cole
- Social Networks Koster, Raph
- Social Networks Jeff Cole
- Social Networks Matthew Dobervich
- Social Networks Jeff Cole
- Social Networks Dave Rickey
- Social Networks Jeff Cole
- Social Networks Sasha Hart
- Social Networks Nicolai Hansen
- Social Networks Dave Rickey
- Social Networks Paul E. Schwanz, II
- Social Networks Sasha Hart
- Social Networks paul.schwanz@sun.com
- Social Networks Sasha Hart
- Social Networks Matt Mihaly
- Social Networks John Buehler
- Advertising Thread Edward Glowacki
- Advertising Thread Matt Mihaly
- Histories and Legends paul.schwanz@sun.com
- Histories and Legends Koster, Raph
- Histories and Legends Paul Schwanz
- Histories and Legends Matt Mihaly
- Histories and Legends Paul Schwanz
- Histories and Legends Val Trullinger
- Histories and Legends apollyon
- Histories and Legends Matthew Dobervich
- Histories and Legends Koster, Raph
- Histories and Legends Edward Glowacki
- Histories and Legends Sasha Hart
- Advertising Thread Richard A. Bartle
- Where do you get you numbers? NetEngels@aol.com
- Where do you get you numbers? Dave Rickey
- Mud Advertising Matt Mihaly
- Mud Advertising Christopher Allen
- Mud Advertising Brian 'Psychochild' Green
- Online World Timeline slashdotted Koster, Raph
- Online World Timeline slashdotted Lars Duening
- Online World Timeline slashdotted Dave Rickey
- Online World Timeline slashdotted Ted L. Chen
- Online World Timeline slashdotted Russ Whiteman
- Online World Timeline slashdotted Jon A. Lambert
- TECH: Trusting Network Clients Fox McCloud
- TECH: Trusting Network Clients "Arnau Rossell=?US-ASCII?Q?=F3?= Castell=?US-ASCII?Q?=F3?="< arocas@alumni.uv.es>
- TECH: Trusting Network Clients Jeremy Noetzelman
- TECH: Trusting Network Clients Nicolai Hansen
- TECH: Trusting Network Clients Crosbie Fitch
- TECH: Trusting Network Clients Freeman, Jeff
- TECH: Trusting Network Clients Vincent Archer
According to Freeman, Jeff:
>> in which the client is not in the hands of the enemy. You have a
>> game with a manageable amount of cheating. You can harness a
>> tenth of the power of all of the clients to fully police them
>> all.
> I'd be interesting in hearing more about what sort of
> implementation you're talking about here.
At Nevrax, we had this same idea. We called it the "road police",
seeing as the only thing we really have to trust the client on is
movement. Due to the vagaries of network, when people move in a 3D
environment, it's entirely possible that a couple of packets get
lost from time to time.
In that case, you have two choices: either the server has to
validate each step, in which case, a lag causes a "molasses" effect
(you get stuck in place), which is not good for the immersion, or
the server must accept all your movements and allow the client to
move freely, notifying him of where he is (which, for short lag
periods, is transparent).
In the latter case, all clients "that can" (loose term) check also
the movement updates they get from other clients. If the movements
fall outside of the "allowed envelope" (i.e. the shortest path
possible from A to B), the client reports the speed offender to the
server. A couple of violations and the client is assumed to use a
speed cheat.
I'd call it myself the "informer" method, but "road police" it was.
> I see it as sort of like the airline industry: They don't know who
> the terrorists are, so they search *all* the luggage. If they
> could just search the terrorist's luggage and leave everyone else
> alone, they'd do that. But they can't. And there's no way to
> make it so that the good people's luggage keeps an eye out for the
> bad people's luggage, because luggage doesn't have eyes. Ok, so
> that analogy broke-down.
My own metaphor for "the client is in the hand of the ennemy" is
that of a spy network. Your server is the country, which maintains a
large network of spies abroad, in hostile countries. The operatives
provide you information, and need themselves some information to do
their job. However, the country may have counterintelligence at
work. So, any of your spies can have become a double agent. Maybe he
can notify you he's got caught ("hack detectors" built in the agent
code), maybe not.
So you need to trust what they say as little as possible, and do
cross-checking whenever possible. And you need to tell them as few
things as possible, for fear all of that data is going to land on
the ennemy's desk. And, if you're convinced he's no longer acting
for you, then you cut your ties.
> But anyway, I don't understand the concept of clients policing
> other clients. Since all of the clients communicate with one
> another via the server, why wouldn't you just put the policing on
> the server?
Depend on what. If the checks are really CPU intensive, it might be
unpractical to check everyone everytime. So, you check only a couple
people some of the time, and your informers (the client PC, who have
CPU to spare) tell you who to watch.
--
Vincent Archer Email: archer@frmug.org
All men are mortal. Socrates was mortal. Therefore, all men are Socrates.
(Woody Allen) - TECH: Trusting Network Clients Brack, J. Allen
- TECH: Trusting Network Clients Kwon J. Ekstrom
- TECH: Trusting Network Clients Vincent Archer
- TECH: Trusting Network Clients brian hook
- TECH: Trusting Network Clients Crosbie Fitch
- TECH: Trusting Network Clients Koster, Raph
- TECH: Trusting Network Clients Sasha Hart
- TECH: Trusting Network Clients Phillip Lenhardt
- TECH: Trusting Network Clients Sasha Hart
- TECH: Trusting Network Clients apollyon
- TECH: Trusting Network Clients Travis Nixon
- TECH: Trusting Network Clients Sean Kelly
- TECH: Trusting Network Clients Koster, Raph
- TECH: Trusting Network Clients Sean Kelly
- TECH: Trusting Network Clients Paul Schwanz
- TECH: Trusting Network Clients Justin Quimby
- TECH: Trusting Network Clients Steve Dieter
- TECH: Trusting Network Clients Jesus Lopez
- TECH: Trusting Network Clients Nicolai Hansen
- TECH: Trusting Network Clients Tess Snider
- TECH: Trusting Network Clients Crosbie Fitch
- TECH: Trusting Network Clients Christohe Badoit
- TECH: Trusting Network Clients Bruce Mitchener
- TECH: Trusting Network Clients Christophe Badoit
- TECH: Trusting Network Clients Fox McCloud
- TECH: Trusting Network Clients Christophe Badoit
- TECH: Trusting Network Clients Edward Glowacki
- TECH: Trusting Network Clients James Ross Nicoll
- TECH: Trusting Network Clients Phillip Lenhardt
- TECH: Trusting Network Clients Russ Whiteman
- TECH: Trusting Network Clients Ian Macintosh
- TECH: Trusting Network Clients damon baker
- TECH: Trusting Network Clients Benjamin Tolputt
- TECH: Trusting Network Clients David H. Loeser Jr.
- Natural Selection and Communities Paul Schwanz
- Natural Selection and Communities John Buehler
- Natural Selection and Communities Koster, Raph
- Natural Selection and Communities Paul Schwanz
- Natural Selection and Communities Matt Mihaly
- Natural Selection and Communities John Buehler
- Natural Selection and Communities Dave Rickey
- Natural Selection and Communities John Buehler
- Natural Selection and Communities Dave Rickey
- Natural Selection and Communities John Buehler
- Natural Selection and Communities Crosbie Fitch
- Natural Selection and Communities Koster, Raph
- Natural Selection and Communities John Buehler
- Natural Selection and Communities Matt Mihaly
- Natural Selection and Communities John Buehler
- Natural Selection and Communities Dave Trump
- Natural Selection and Communities Matt Mihaly
- Natural Selection and Communities John Buehler
- Natural Selection and Communities Damion Schubert
- Natural Selection and Communities Ron Gabbard
- Natural Selection and Communities Matt Mihaly
- Natural Selection and Communities Paul Schwanz
- Natural Selection and Communities Matt Mihaly
- Natural Selection and Communities Paul Schwanz
- Natural Selection and Communities Matt Mihaly
- Natural Selection and Communities David Kennerly
- Natural Selection and Communities Paul Schwanz
- Natural Selection and Communities Paul Schwanz
- Peer-to-peer hosting of player created content in persistant worlds. Matthew Dobervich
- Sales data Richard A. Bartle
- Sales data Daniel.Harman@barclayscapital.com
- Sales data Luca Girardo
- Sales data Richard A. Bartle
- Sales data Rayzam
- Sales data Robert A. Rice, Jr.
- Cans of Achievements and Quests Rayzam
- Cans of Achievements and Quests Sean Kelly
- Cans of Achievements and Quests Rayzam
- Cans of Achievements and Quests Sean Kelly
- Cans of Achievements and Quests Sasha Hart
- Cans of Achievements and Quests Sean Kelly
- Cans of Achievements and Quests Sasha Hart
- Cans of Achievements and Quests Justin Quimby
- Cans of Achievements and Quests Rayzam
- Cans of Achievements and Quests Paul Schwanz
- Cans of Achievements and Quests Rayzam
- Cans of Achievements and Quests damon baker
- Cans of Achievements and Quests Rayzam
- Cans of Achievements and Quests Michael Tresca
- Cans of Achievements and Quests Rayzam
- Muds and High School Textbooks Jon A. Lambert
- Unruly Players (fwd) J C Lawrence