Package net.i2p.router

Class Router

java.lang.Object
net.i2p.router.Router
All Implemented Interfaces:
RouterClock.ClockShiftListener
public class Router extends Object implements RouterClock.ClockShiftListener
Main driver for the router. For embedded use, instantiate, call setKillVMOnEnd(false), and then call runRouter().

  • Field Details

    • routerInfoFileLock

      public final Object routerInfoFileLock
      not for external use

    • _familyKeyLock

      public final Object _familyKeyLock

    • PROP_CONFIG_FILE

      public static final String PROP_CONFIG_FILE
      See Also:

    • CLOCK_FUDGE_FACTOR

      public static final long CLOCK_FUDGE_FACTOR
      let clocks be off by 1 minute
      See Also:

    • COALESCE_TIME

      public static final int COALESCE_TIME
      coalesce stats this often - should be a little less than one minute, so the graphs get updated
      See Also:

    • PROP_HIDDEN

      public static final String PROP_HIDDEN
      this puts an 'H' in your routerInfo
      See Also:

    • PROP_HIDDEN_HIDDEN

      public static final String PROP_HIDDEN_HIDDEN
      this does not put an 'H' in your routerInfo
      See Also:

    • PROP_DYNAMIC_KEYS

      public static final String PROP_DYNAMIC_KEYS
      New router keys at every restart. Disabled.
      See Also:

    • PROP_REBUILD_KEYS

      public static final String PROP_REBUILD_KEYS
      New router keys once only.
      Since:
      0.9.34
      See Also:

    • PROP_IB_RANDOM_KEY

      public static final String PROP_IB_RANDOM_KEY
      See Also:

    • PROP_OB_RANDOM_KEY

      public static final String PROP_OB_RANDOM_KEY
      See Also:

    • UPDATE_FILE

      public static final String UPDATE_FILE
      See Also:

    • CAPABILITY_BW12

      public static final char CAPABILITY_BW12
      See Also:

    • CAPABILITY_BW32

      public static final char CAPABILITY_BW32
      See Also:

    • CAPABILITY_BW64

      public static final char CAPABILITY_BW64
      See Also:

    • CAPABILITY_BW128

      public static final char CAPABILITY_BW128
      See Also:

    • CAPABILITY_BW256

      public static final char CAPABILITY_BW256
      See Also:

    • CAPABILITY_BW512

      public static final char CAPABILITY_BW512
      Since:
      0.9.18
      See Also:

    • CAPABILITY_BW_UNLIMITED

      public static final char CAPABILITY_BW_UNLIMITED
      Since:
      0.9.18
      See Also:

    • PROP_FORCE_BWCLASS

      public static final String PROP_FORCE_BWCLASS
      for testing
      See Also:

    • CAPABILITY_REACHABLE

      public static final char CAPABILITY_REACHABLE
      See Also:

    • CAPABILITY_UNREACHABLE

      public static final char CAPABILITY_UNREACHABLE
      See Also:

    • PROP_FORCE_UNREACHABLE

      public static final String PROP_FORCE_UNREACHABLE
      for testing
      See Also:

    • CAPABILITY_NEW_TUNNEL

      @Deprecated public static final char CAPABILITY_NEW_TUNNEL
      Deprecated.
      unused
      See Also:

    • MIN_BW_K

      public static final int MIN_BW_K
      In binary (1024) Kbytes
      Since:
      0.9.33
      See Also:

    • MIN_BW_L

      public static final int MIN_BW_L
      In binary (1024) Kbytes
      Since:
      0.9.33
      See Also:

    • MIN_BW_M

      public static final int MIN_BW_M
      In binary (1024) Kbytes
      Since:
      0.9.33
      See Also:

    • MIN_BW_N

      public static final int MIN_BW_N
      In binary (1024) Kbytes
      Since:
      0.9.33
      See Also:

    • MIN_BW_O

      public static final int MIN_BW_O
      In binary (1024) Kbytes
      Since:
      0.9.33
      See Also:

    • MIN_BW_P

      public static final int MIN_BW_P
      In binary (1024) Kbytes
      Since:
      0.9.33
      See Also:

    • MIN_BW_X

      public static final int MIN_BW_X
      In binary (1024) Kbytes
      Since:
      0.9.33
      See Also:

    • EXIT_GRACEFUL

      public static final int EXIT_GRACEFUL
      shut down after all tunnels are gone
      See Also:

    • EXIT_HARD

      public static final int EXIT_HARD
      shut down immediately
      See Also:

    • EXIT_OOM

      public static final int EXIT_OOM
      shut down immediately
      See Also:

    • EXIT_HARD_RESTART

      public static final int EXIT_HARD_RESTART
      shut down immediately, and tell the wrapper to restart
      See Also:

    • EXIT_GRACEFUL_RESTART

      public static final int EXIT_GRACEFUL_RESTART
      shut down after all tunnels are gone, and tell the wrapper to restart
      See Also:

    • PROP_BANDWIDTH_SHARE_PERCENTAGE

      public static final String PROP_BANDWIDTH_SHARE_PERCENTAGE
      See Also:

    • DEFAULT_SHARE_PERCENTAGE

      public static final int DEFAULT_SHARE_PERCENTAGE
      See Also:

  • Constructor Details

    • Router

      public Router()
      Instantiation only. Starts no threads. Does not install updates. RouterContext is created but not initialized. You must call runRouter() after any constructor to start things up. Config file name is "router.config" unless router.configLocation set in system properties. See two-arg constructor for more information.
      Throws:
      IllegalStateException - since 0.9.19 if another router with this config is running

    • Router

      public Router(Properties envProps)
      Instantiation only. Starts no threads. Does not install updates. RouterContext is created but not initialized. You must call runRouter() after any constructor to start things up. Config file name is "router.config" unless router.configLocation set in envProps or system properties. See two-arg constructor for more information.
      Parameters:
      envProps - may be null
      Throws:
      IllegalStateException - since 0.9.19 if another router with this config is running

    • Router

      public Router(String configFilename)
      Instantiation only. Starts no threads. Does not install updates. RouterContext is created but not initialized. You must call runRouter() after any constructor to start things up. See two-arg constructor for more information.
      Parameters:
      configFilename - may be null
      Throws:
      IllegalStateException - since 0.9.19 if another router with this config is running

    • Router

      public Router(String configFilename, Properties envProps)
      Instantiation only. Starts no threads. Does not install updates. RouterContext is created but not initialized. You must call runRouter() after any constructor to start things up. If configFilename is non-null, configuration is read in from there. Else if envProps is non-null, configuration is read in from the location given in the router.configLocation property. Else it's read in from the System property router.configLocation. Else from the file "router.config". The most important properties are i2p.dir.base (the install directory, may be read-only) and i2p.dir.config (the user's configuration/data directory). i2p.dir.base defaults to user.dir (CWD) but should almost always be set. i2p.dir.config default depends on OS, user name (to detect if running as a service or not), and auto-detection of whether there appears to be previous data files in the base dir. See WorkingDir for details. If the config dir does not exist, it will be created, and files migrated from the base dir, in this constructor. If files in an existing config dir indicate that another router is already running with this directory, the constructor will delay for several seconds to be sure, and then throw an IllegalStateException.
      Parameters:
      configFilename - may be null
      envProps - may be null
      Throws:
      IllegalStateException - since 0.9.19 if another router with this config is running

  • Method Details

    • clearCaches

      public static final void clearCaches()
      Not for external use.
      Since:
      0.8.8

    • setKillVMOnEnd

      public void setKillVMOnEnd(boolean shouldDie)
      Configure the router to kill the JVM when the router shuts down, as well as whether to explicitly halt the JVM during the hard fail process. Defaults to true. Set to false for embedded before calling runRouter()

    • getKillVMOnEnd

      public boolean getKillVMOnEnd()

    • getConfigFilename

      public String getConfigFilename()
      Returns:
      absolute path

    • setConfigFilename

      @Deprecated public void setConfigFilename(String filename)
      Deprecated.
      unused

    • getConfigSetting

      public String getConfigSetting(String name)

    • setConfigSetting

      @Deprecated public void setConfigSetting(String name, String value)
      Deprecated.
      use saveConfig(String name, String value) or saveConfig(Map toAdd, Set toRemove)
      Warning, race between here and saveConfig(), saveConfig(String name, String value) or saveConfig(Map toAdd, Set toRemove) is recommended.
      Since:
      0.8.13

    • removeConfigSetting

      @Deprecated public void removeConfigSetting(String name)
      Deprecated.
      use saveConfig(String name, String value) or saveConfig(Map toAdd, Set toRemove)
      Warning, race between here and saveConfig(), saveConfig(String name, String value) or saveConfig(Map toAdd, Set toRemove) is recommended.
      Since:
      0.8.13

    • getConfigSettings

      public Set<String> getConfigSettings()
      Returns:
      unmodifiable Set, unsorted

    • getConfigMap

      public Map<String,String> getConfigMap()
      Returns:
      unmodifiable Map, unsorted

    • getRouterInfo

      public RouterInfo getRouterInfo()
      Our current router info. Warning, may be null if called very early. Warning - risk of deadlock - do not call while holding locks Note: Due to lock contention, especially during a rebuild of the router info, this may take a long time. For determining the current status of the router, use RouterContext.commSystem().getStatus().

    • setRouterInfo

      public void setRouterInfo(RouterInfo info)
      Caller must ensure info is valid - no validation done here. Not for external use. Warning - risk of deadlock - do not call while holding locks

    • getWhenStarted

      public long getWhenStarted()
      Used only by routerconsole.. to be deprecated?
      Returns:
      System time, NOT context time

    • getUptime

      public long getUptime()
      Wall clock uptime. This uses System time, NOT context time, so context clock shifts will not affect it. This is important if NTP fails and the clock then shifts from a SSU peer source just after startup.

    • getNetworkID

      public int getNetworkID()
      The network ID. Default 2. May be changed with the config property router.networkID (restart required). Change only if running a test network to prevent cross-network contamination.
      Returns:
      2 - 254
      Since:
      0.9.25

    • getContext

      public RouterContext getContext()
      Non-null, but take care when accessing context items before runRouter() is called as the context will not be initialized.
      Returns:
      non-null

    • setUPnPScannerCallback

      public void setUPnPScannerCallback(UPnPScannerCallback callback)
      For Android only. MUST be set before runRouter() is called.
      Parameters:
      callback - the callback or null to clear it
      Since:
      0.9.41

    • getUPnPScannerCallback

      public UPnPScannerCallback getUPnPScannerCallback()
      For Android only.
      Returns:
      the callback or null if none
      Since:
      0.9.41

    • runRouter

      public void runRouter()
      This must be called after instantiation. Starts the threads. Does not install updates. This is for embedded use. Standard standalone installation uses main() instead, which checks for updates and then calls this. This may take quite a while, especially if NTP fails or the system lacks entropy
      Throws:
      IllegalStateException - if called more than once
      Since:
      public as of 0.9 for Android and other embedded uses

    • readConfig

      public void readConfig()
      This updates the config with all settings found in the file. It does not clear the config first, so settings not found in the file will remain in the config. This is synchronized with saveConfig(). Not for external use.

    • isAlive

      public boolean isAlive()
      True during the initial start, but false during a soft restart.

    • isRunning

      public boolean isRunning()
      Returns:
      true if router is RUNNING, i.e NetDB and Expl. tunnels are ready.
      Since:
      0.9.39

    • isRestarting

      public boolean isRestarting()
      Returns:
      true if router is RESTARTING (soft restart)
      Since:
      0.9.40

    • setIsAlive

      public void setIsAlive()
      Only for Restarter, after soft restart is complete. Not for external use.
      Since:
      0.8.12

    • setNetDbReady

      public void setNetDbReady()
      Only for NetDB, after RIs are loaded. Not for external use.
      Since:
      0.9.18

    • setExplTunnelsReady

      public void setExplTunnelsReady()
      Only for Tunnel Building, after we have non-zero-hop expl. tunnels. Not for external use.
      Since:
      0.9.18

    • gracefulShutdownInProgress

      public boolean gracefulShutdownInProgress()
      Is a graceful shutdown in progress? This may be cancelled. Note that this also returns true if an uncancellable final shutdown is in progress.

    • isFinalShutdownInProgress

      public boolean isFinalShutdownInProgress()
      Is a final shutdown in progress? This may not be cancelled.
      Since:
      0.8.12

    • rebuildRouterInfo

      public void rebuildRouterInfo()
      Rebuild and republish our routerInfo since something significant has changed. This is a non-blocking rebuild. Not for external use. Warning - risk of deadlock - do not call while holding locks

    • rebuildRouterInfo

      public void rebuildRouterInfo(boolean blockingRebuild)
      Rebuild and republish our routerInfo since something significant has changed. Not for external use. Warning - risk of deadlock - do not call while holding locks
      Parameters:
      blockingRebuild - ignored, always nonblocking

    • getFamilyKeyCrypto

      public FamilyKeyCrypto getFamilyKeyCrypto()
      Family Key Crypto Signer / Verifier. Not for external use. If family key is set, first call Will take a while to generate keys. Warning - risk of deadlock - do not call while holding locks (other than routerInfoLock)
      Returns:
      null on initialization failure
      Since:
      0.9.24

    • getBandwidthClass

      public char getBandwidthClass()
      The current bandwidth class. For building our RI. Not for external use.
      Returns:
      a character to be added to the RI, one of "KLMNOPX"
      Since:
      0.9.31

    • getCapabilities

      public String getCapabilities()
      For building our RI. Not for external use.
      Returns:
      a capabilities string to be added to the RI

    • isHidden

      public boolean isHidden()

    • eventLog

      public EventLog eventLog()
      Since:
      0.9.3

    • killKeys

      public void killKeys()
      Not for external use.

    • rebuildNewIdentity

      public void rebuildNewIdentity()
      Rebuild a new identity the hard way - delete all of our old identity files, then reboot the router. Calls exit(), never returns. Not for external use.

    • shutdown

      public void shutdown(int exitCode)
      Shutdown with no chance of cancellation. Blocking, will call exit() and not return unless setKillVMOnExit(false) was previously called, or a final shutdown is already in progress. May take several seconds as it runs all the shutdown hooks.
      Parameters:
      exitCode - one of the EXIT_* values, non-negative
      Throws:
      IllegalArgumentException - if exitCode negative

    • shutdown2

      public void shutdown2(int exitCode)
      Cancel the JVM runtime hook before calling this. Called by the ShutdownHook. NOT to be called by others, use shutdown().
      Parameters:
      exitCode - one of the EXIT_* values, non-negative
      Throws:
      IllegalArgumentException - if exitCode negative

    • shutdownGracefully

      public void shutdownGracefully()
      Non-blocking shutdown. Call this if we want the router to kill itself as soon as we aren't participating in any more tunnels (etc). This will not block and doesn't guarantee any particular time frame for shutting down. To shut the router down immediately, use shutdown(int). If you want to cancel the graceful shutdown (prior to actual shutdown ;), call cancelGracefulShutdown(). Exit code will be EXIT_GRACEFUL. Shutdown delay will be from zero to 11 minutes.

    • shutdownGracefully

      public void shutdownGracefully(int exitCode)
      Non-blocking shutdown. Call this with EXIT_HARD or EXIT_HARD_RESTART for a non-blocking, hard, non-graceful shutdown with a brief delay to allow a UI response Returns silently if a final shutdown is already in progress.
      Parameters:
      exitCode - one of the EXIT_* values, non-negative
      Throws:
      IllegalArgumentException - if exitCode negative

    • cancelGracefulShutdown

      public void cancelGracefulShutdown()
      Cancel any prior request to shut the router down gracefully. Returns silently if a final shutdown is already in progress.

    • scheduledGracefulExitCode

      public int scheduledGracefulExitCode()
      What exit code do we plan on using when we shut down (or -1, if there isn't a graceful shutdown planned)
      Returns:
      one of the EXIT_* values or -1

    • getShutdownTimeRemaining

      public long getShutdownTimeRemaining()
      How long until the graceful shutdown will kill us?
      Returns:
      -1 if no shutdown in progress.

    • saveConfig

      public boolean saveConfig()
      Save the current config options (returning true if save was successful, false otherwise) Synchronized with file read in getConfig()

    • saveConfig

      public boolean saveConfig(String name, String value)
      Updates the current config with the given key/value and then saves it. Prevents a race in the interval between setConfigSetting() / removeConfigSetting() and saveConfig(), Synchronized with getConfig() / saveConfig()
      Parameters:
      name - setting to add/change/remove before saving
      value - if non-null, updated value; if null, setting will be removed
      Returns:
      success
      Since:
      0.8.13

    • saveConfig

      public boolean saveConfig(Map toAdd, Collection<String> toRemove)
      Updates the current config and then saves it. Prevents a race in the interval between setConfigSetting() / removeConfigSetting() and saveConfig(), Synchronized with getConfig() / saveConfig()
      Parameters:
      toAdd - settings to add/change before saving, may be null or empty
      toRemove - settings to remove before saving, may be null or empty
      Returns:
      success
      Since:
      0.8.13

    • clockShift

      public void clockShift(long delta)
      The clock shift listener. Restart the router if we should.
      Specified by:
      clockShift in interface RouterClock.ClockShiftListener
      Parameters:
      delta - The system clock and adjusted clock just changed by this much, in milliseconds (approximately)
      Since:
      0.8.8

    • restart

      public void restart()
      A "soft" restart, primarily of the comm system, after a port change or large step-change in system time. Does not stop the whole JVM, so it is safe even in the absence of the wrapper. This is not a graceful restart - all peer connections are dropped immediately. As of 0.8.8, this returns immediately and does the actual restart in a separate thread. Poll isAlive() if you need to know when the restart is complete. Not recommended for external use.

    • main

      public static void main(String[] args)
      Usage: Router [rebuild] No other options allowed, for now Instantiates Router(), and either installs updates and exits, or calls runRouter(). Not recommended for embedded use. Applications bundling I2P should instantiate a Router and call runRouter().
      Parameters:
      args - null ok
      Throws:
      IllegalArgumentException

    • getEstimatedDowntime

      public long getEstimatedDowntime()
      How long this router was down before it started, or 0 if unknown. This may be used for a determination of whether to regenerate keys, for example. We use the timestamp of the previous ping file left behind on crash, as set by isOnlyRouterRunning(), if present. Otherwise, the last STOPPED entry in the event log. May take a while to run the first time, if it has to go through the event log. Once called, the result is cached.
      Since:
      0.9.47

    • setEstimatedDowntime

      public void setEstimatedDowntime(long downtime)
      Only for soft restart. Not for external use.
      Since:
      0.9.47

    • getSharePercentage

      public double getSharePercentage()
      What fraction of the bandwidth specified in our bandwidth limits should we allow to be consumed by participating tunnels?
      Returns:
      a number less than one, not a percentage!

    • get1sRate

      public int get1sRate()
      Max of inbound and outbound rate in bytes per second

    • get1sRate

      public int get1sRate(boolean outboundOnly)
      When outboundOnly is false, outbound rate in bytes per second. When true, max of inbound and outbound rate in bytes per second.

    • get1sRateIn

      public int get1sRateIn()
      Inbound rate in bytes per second

    • get15sRate

      public int get15sRate()
      Max of inbound and outbound rate in bytes per second

    • get15sRate

      public int get15sRate(boolean outboundOnly)
      When outboundOnly is false, outbound rate in bytes per second. When true, max of inbound and outbound rate in bytes per second.

    • get15sRateIn

      public int get15sRateIn()
      Inbound rate in bytes per second

    • get1mRate

      public int get1mRate()
      Max of inbound and outbound rate in bytes per second

    • get1mRate

      public int get1mRate(boolean outboundOnly)
      When outboundOnly is false, outbound rate in bytes per second. When true, max of inbound and outbound rate in bytes per second.

    • get1mRateIn

      public int get1mRateIn()
      Inbound rate in bytes per second

    • get5mRate

      public int get5mRate()
      Max of inbound and outbound rate in bytes per second

    • get5mRate

      public int get5mRate(boolean outboundOnly)
      When outboundOnly is false, outbound rate in bytes per second. When true, max of inbound and outbound rate in bytes per second.