net.i2p.router.tunnel.pool

Class IdleTunnelMonitor

java.lang.Object

net.i2p.router.tunnel.pool.IdleTunnelMonitor

All Implemented Interfaces:

SimpleTimer.TimedEvent

class IdleTunnelMonitor
extends Object
implements SimpleTimer.TimedEvent

Monitors transit tunnels for idle/abusive behavior and detects Sybil attacks. This class periodically scans participating tunnels and: 1. Drops tunnels with no/low traffic after detection period (both messages AND bytes) 2. Detects multiple router identities on same IP with low traffic (Sybils) 3. Bans peers for repeated idle tunnel offenses or Sybil behavior Configurable properties: - router.idleTunnelDetectionPeriod: Time before checking for idle (default: 30000ms) - router.idleTunnelMinMessages: Minimum messages to not be considered idle (default: 2) - router.idleTunnelMinBytes: Minimum bytes to not be considered idle (default: 2048) - router.idleTunnelScanInterval: How often to scan (default: 30000ms) - router.sybilMinIdentities: Minimum identities on same IP to trigger Sybil check (default: 2) - router.sybilMinIdleTunnels: Minimum idle tunnels for Sybil ban (default: 10)

Constructor Summary

Constructors

Constructor and Description
IdleTunnelMonitor(RouterContext ctx)

Method Summary

Modifier and Type	Method and Description
void	timeReached() the time requested has been reached (this call should NOT block, otherwise the whole SimpleTimer gets backed up)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IdleTunnelMonitor

IdleTunnelMonitor(RouterContext ctx)

Method Detail

timeReached

public void timeReached()

Description copied from interface: SimpleTimer.TimedEvent

the time requested has been reached (this call should NOT block, otherwise the whole SimpleTimer gets backed up)

Specified by:

timeReached in interface SimpleTimer.TimedEvent