Differences

This shows you the differences between two versions of the page.

@@ Line 1: / Line 1: @@
+$EPIC: flood_control.txt,v 1.1 2007/03/02 02:32:04 jnelson Exp $
+======Flood Control======
+The client has an anti-flood facility whose purpose is to prevent
+crapflooding to your display.  Since flood control is a client-side
+facility, it can't stop someone from consuming all your cpu or bandwidth.
+=====How people are tracked=====
+The [[set flood_maskuser]] value controls what the client considers to
+be one //flooder//.
+^ set flood_maskuser value ^ Description ^
+| 0 | Treat each unique user@host as distinct flooder |
+| 1 | Treat identd users uniquely, treat all non-identd users on a host together as one flooder |
+| 2 | Treat all users on a host as one flooder |
+=====Floods=====
+Floods are specific to a target (channel or msgs), server, and [[level]].
+If someone floods you on multiple channels or using multiple types of
+messages, these are all considered different floods.  Servers are always
+exempt from flood control.
+=====The Flood List=====
+The client maintains a list of potential floods.  The number of floods
+to track is controlled by [[set flood_users]].  Setting this value too
+high takes up lots of resources, setting it too low makes the facility
+less effective.
+=====Getting on and Getting off the flood list====
+When someone new sends you a message, they are added to the flood list,
+taking the place of the oldest entry on the flood list that doesn't have
+any penalty points (see below).  Therefore, entries are constantly being
+added and removed from the flood list, as long as they don't flood you.
+If an entry would have been removed, but it has penalty points, then it
+loses one penalty point.  Eventually (if it doesn't flood you), all of
+the penalty points will run out and then it will be removed.
+=====What is a flood?=====
+If a potential flooder sends you [[set flood_after]] messages before they are
+removed from the list, the messages-per-second rate is compared against
+[[set flood_rate]] / [[set flood_rate_per]].  If the flooder has sent too
+many messages, each time they send you a message they will receive a
+"penalty point", until the rate of messages falls below your threshhold.
+These penalty points prevent the flooder from being removed from the
+tracking list for a long time.  This allows the client to focus its efforts
+on people who are causing you trouble.
+=====When you are flooded...=====
+When you are flooded, if [[set flood_warning]] is on, a message is sent to
+your display telling you that you have been flooded.  If [[set flood_ignore]]
+is ON, then the normal processing of the message is suppressed by the client.
+If [[set ignore]] is OFF, then the client continues to process the message
+normally.
+=====Checking out the flood list=====
+The [[floodinfo]] function will tell you about the flood list.
+=====History:=====
+Flood control has always been a part of ircII.

EPIC

User Tools

Site Tools

Differences

Page Tools