net.i2p.router.tunnel.pool
Class TunnelPoolManager

java.lang.Object
  net.i2p.router.tunnel.pool.TunnelPoolManager

All Implemented Interfaces:

Service, TunnelManagerFacade

public class TunnelPoolManager
extends Object
implements TunnelManagerFacade

Manage all the exploratory and client tunnel pools. Run the tunnel builder and handler threads.

Constructor Summary

TunnelPoolManager(RouterContext ctx)

Method Summary

(package private) void	buildComplete(PooledTunnelCreatorConfig cfg) queue a recurring test job if appropriate
void	buildTunnels(Destination client, ClientTunnelSettings settings) Used only at session startup.
void	fail(Hash peer) Fail all outbound tunnels with this peer as first hop, and all inbound tunnels with this peer as the last hop, baecause we can't contact it any more.
(package private) BuildExecutor	getExecutor()
int	getFreeTunnelCount() how many free inbound tunnels do we have available?
int	getInboundBuildQueueSize() count how many inbound tunnel requests we have received but not yet processed
Map<Hash,TunnelPool>	getInboundClientPools() for TunnelRenderer in router console
int	getInboundClientTunnelCount() how many free inbound client tunnels do we have available?
TunnelPool	getInboundExploratoryPool() For TunnelRenderer in router console
TunnelPoolSettings	getInboundSettings()
TunnelPoolSettings	getInboundSettings(Hash client)
long	getLastParticipatingExpiration() When does the last tunnel we are participating in expire?
Map<Hash,TunnelPool>	getOutboundClientPools() for TunnelRenderer in router console
int	getOutboundClientTunnelCount() how many outbound client tunnels do we have available?
int	getOutboundClientTunnelCount(Hash destination) Use to verify a tunnel pool is alive
TunnelPool	getOutboundExploratoryPool() For TunnelRenderer in router console
TunnelPoolSettings	getOutboundSettings()
TunnelPoolSettings	getOutboundSettings(Hash client)
int	getOutboundTunnelCount() how many outbound tunnels do we have available?
int	getParticipatingCount() how many tunnels are we participating in?
double	getShareRatio()
TunnelInfo	getTunnelInfo(TunnelId id) Retrieve the information related to a particular tunnel
(package private) boolean	isShutdown()
boolean	isValidTunnel(Hash client, TunnelInfo tunnel) Is a tunnel a valid member of the pool?
void	listPools(List<TunnelPool> out) list of TunnelPool instances currently in play
void	removeTunnels(Hash destination) This will be called twice, once by the inbound and once by the outbound pool.
void	renderStatusHTML(Writer out) Deprecated. moved to routerconsole
void	restart() Perform a soft restart.
TunnelInfo	selectInboundExploratoryTunnel(Hash closestTo) Pick the inbound exploratory tunnel with the gateway closest to the given hash.
TunnelInfo	selectInboundTunnel() Pick a random inbound exploratory tunnel.
TunnelInfo	selectInboundTunnel(Hash destination) Pick a random inbound tunnel from the given destination's pool.
TunnelInfo	selectInboundTunnel(Hash destination, Hash closestTo) Pick the inbound tunnel with the gateway closest to the given hash from the given destination's pool.
TunnelInfo	selectOutboundExploratoryTunnel(Hash closestTo) Pick the outbound exploratory tunnel with the endpoint closest to the given hash.
TunnelInfo	selectOutboundTunnel() Pick a random outbound exploratory tunnel.
TunnelInfo	selectOutboundTunnel(Hash destination) Pick a random outbound tunnel from the given destination's pool.
TunnelInfo	selectOutboundTunnel(Hash destination, Hash closestTo) Pick the outbound tunnel with the endpoint closest to the given hash from the given destination's pool.
Set<Hash>	selectPeersInTooManyTunnels() For reliability reasons, don't allow a peer in more than x% of client and exploratory tunnels.
void	setInboundSettings(Hash client, TunnelPoolSettings settings)
void	setInboundSettings(TunnelPoolSettings settings)
void	setOutboundSettings(Hash client, TunnelPoolSettings settings)
void	setOutboundSettings(TunnelPoolSettings settings)
void	shutdown() Cannot be restarted
void	startup() Instruct the service that it should start normal operation.
(package private) void	tunnelFailed()

Methods inherited from class java.lang.Object

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

Constructor Detail

TunnelPoolManager

public TunnelPoolManager(RouterContext ctx)

Method Detail

selectInboundTunnel

public TunnelInfo selectInboundTunnel()

Pick a random inbound exploratory tunnel. Warning - selectInboundExploratoryTunnel(Hash) is preferred.

Specified by:

selectInboundTunnel in interface TunnelManagerFacade

Returns:

null if none

selectInboundTunnel

public TunnelInfo selectInboundTunnel(Hash destination)

Pick a random inbound tunnel from the given destination's pool. Warning - selectOutboundTunnel(Hash, Hash) is preferred.

Specified by:

selectInboundTunnel in interface TunnelManagerFacade

Parameters:

destination - if null, returns inbound exploratory tunnel

Returns:

null if none

selectOutboundTunnel

public TunnelInfo selectOutboundTunnel()

Pick a random outbound exploratory tunnel. Warning - selectOutboundExploratoryTunnel(Hash) is preferred.

Specified by:

selectOutboundTunnel in interface TunnelManagerFacade

Returns:

null if none

selectOutboundTunnel

public TunnelInfo selectOutboundTunnel(Hash destination)

Pick a random outbound tunnel from the given destination's pool. Warning - selectOutboundTunnel(Hash, Hash) is preferred.

Specified by:

selectOutboundTunnel in interface TunnelManagerFacade

Parameters:

destination - if null, returns outbound exploratory tunnel

Returns:

null if none

selectInboundExploratoryTunnel

public TunnelInfo selectInboundExploratoryTunnel(Hash closestTo)

Pick the inbound exploratory tunnel with the gateway closest to the given hash. By using this instead of the random selectTunnel(), we force some locality in OBEP-IBGW connections to minimize those connections network-wide.

Specified by:

selectInboundExploratoryTunnel in interface TunnelManagerFacade

Parameters:

closestTo - non-null

Returns:

null if none

Since:

0.8.10

selectInboundTunnel

public TunnelInfo selectInboundTunnel(Hash destination,
                                      Hash closestTo)

Pick the inbound tunnel with the gateway closest to the given hash from the given destination's pool. By using this instead of the random selectTunnel(), we force some locality in OBEP-IBGW connections to minimize those connections network-wide.

Specified by:

selectInboundTunnel in interface TunnelManagerFacade

Parameters:

destination - if null, returns inbound exploratory tunnel

closestTo - non-null

Returns:

null if none

Since:

0.8.10

selectOutboundExploratoryTunnel

public TunnelInfo selectOutboundExploratoryTunnel(Hash closestTo)

Pick the outbound exploratory tunnel with the endpoint closest to the given hash. By using this instead of the random selectTunnel(), we force some locality in OBEP-IBGW connections to minimize those connections network-wide.

Specified by:

selectOutboundExploratoryTunnel in interface TunnelManagerFacade

Parameters:

closestTo - non-null

Returns:

null if none

Since:

0.8.10

selectOutboundTunnel

public TunnelInfo selectOutboundTunnel(Hash destination,
                                       Hash closestTo)

Pick the outbound tunnel with the endpoint closest to the given hash from the given destination's pool. By using this instead of the random selectTunnel(), we force some locality in OBEP-IBGW connections to minimize those connections network-wide.

Specified by:

selectOutboundTunnel in interface TunnelManagerFacade

Parameters:

destination - if null, returns outbound exploratory tunnel

closestTo - non-null

Returns:

null if none

Since:

0.8.10

getTunnelInfo

public TunnelInfo getTunnelInfo(TunnelId id)

Description copied from interface: TunnelManagerFacade

Retrieve the information related to a particular tunnel

Specified by:

getTunnelInfo in interface TunnelManagerFacade

Parameters:

id - the tunnelId as seen at the gateway

getFreeTunnelCount

public int getFreeTunnelCount()

Description copied from interface: TunnelManagerFacade

how many free inbound tunnels do we have available?

Specified by:

getFreeTunnelCount in interface TunnelManagerFacade

Returns:

number of inbound exploratory tunnels

getOutboundTunnelCount

public int getOutboundTunnelCount()

Description copied from interface: TunnelManagerFacade

how many outbound tunnels do we have available?

Specified by:

getOutboundTunnelCount in interface TunnelManagerFacade

Returns:

number of outbound exploratory tunnels

getInboundClientTunnelCount

public int getInboundClientTunnelCount()

Description copied from interface: TunnelManagerFacade

how many free inbound client tunnels do we have available?

Specified by:

getInboundClientTunnelCount in interface TunnelManagerFacade

getOutboundClientTunnelCount

public int getOutboundClientTunnelCount()

Description copied from interface: TunnelManagerFacade

how many outbound client tunnels do we have available?

Specified by:

getOutboundClientTunnelCount in interface TunnelManagerFacade

getOutboundClientTunnelCount

public int getOutboundClientTunnelCount(Hash destination)

Use to verify a tunnel pool is alive

Specified by:

getOutboundClientTunnelCount in interface TunnelManagerFacade

Since:

0.7.11

getParticipatingCount

public int getParticipatingCount()

Description copied from interface: TunnelManagerFacade

how many tunnels are we participating in?

Specified by:

getParticipatingCount in interface TunnelManagerFacade

getLastParticipatingExpiration

public long getLastParticipatingExpiration()

Description copied from interface: TunnelManagerFacade

When does the last tunnel we are participating in expire?

Specified by:

getLastParticipatingExpiration in interface TunnelManagerFacade

getShareRatio

public double getShareRatio()

Specified by:

getShareRatio in interface TunnelManagerFacade

Returns:

(number of part. tunnels) / (estimated total number of hops in our expl.+client tunnels) 100 max. We just use length setting, not variance, for speed

Since:

0.7.10

isValidTunnel

public boolean isValidTunnel(Hash client,
                             TunnelInfo tunnel)

Description copied from interface: TunnelManagerFacade

Is a tunnel a valid member of the pool?

Specified by:

isValidTunnel in interface TunnelManagerFacade

getInboundSettings

public TunnelPoolSettings getInboundSettings()

Specified by:

getInboundSettings in interface TunnelManagerFacade

getOutboundSettings

public TunnelPoolSettings getOutboundSettings()

Specified by:

getOutboundSettings in interface TunnelManagerFacade

setInboundSettings

public void setInboundSettings(TunnelPoolSettings settings)

Specified by:

setInboundSettings in interface TunnelManagerFacade

setOutboundSettings

public void setOutboundSettings(TunnelPoolSettings settings)

Specified by:

setOutboundSettings in interface TunnelManagerFacade

getInboundSettings

public TunnelPoolSettings getInboundSettings(Hash client)

Specified by:

getInboundSettings in interface TunnelManagerFacade

getOutboundSettings

public TunnelPoolSettings getOutboundSettings(Hash client)

Specified by:

getOutboundSettings in interface TunnelManagerFacade

setInboundSettings

public void setInboundSettings(Hash client,
                               TunnelPoolSettings settings)

Specified by:

setInboundSettings in interface TunnelManagerFacade

setOutboundSettings

public void setOutboundSettings(Hash client,
                                TunnelPoolSettings settings)

Specified by:

setOutboundSettings in interface TunnelManagerFacade

restart

public void restart()

Description copied from interface: Service

Perform a soft restart.

Specified by:

restart in interface Service

buildTunnels

public void buildTunnels(Destination client,
                         ClientTunnelSettings settings)

Used only at session startup. Do not use to change settings.

Specified by:

buildTunnels in interface TunnelManagerFacade

removeTunnels

public void removeTunnels(Hash destination)

This will be called twice, once by the inbound and once by the outbound pool. Synched with buildTunnels() above.

buildComplete

void buildComplete(PooledTunnelCreatorConfig cfg)

queue a recurring test job if appropriate

startup

public void startup()

Description copied from interface: Service

Instruct the service that it should start normal operation. This call DOES block until the service is ready.

Specified by:

startup in interface Service

shutdown

public void shutdown()

Cannot be restarted

Specified by:

shutdown in interface Service

listPools

public void listPools(List<TunnelPool> out)

list of TunnelPool instances currently in play

Specified by:

listPools in interface TunnelManagerFacade

tunnelFailed

void tunnelFailed()

getExecutor

BuildExecutor getExecutor()

isShutdown

boolean isShutdown()

getInboundBuildQueueSize

public int getInboundBuildQueueSize()

Description copied from interface: TunnelManagerFacade

count how many inbound tunnel requests we have received but not yet processed

Specified by:

getInboundBuildQueueSize in interface TunnelManagerFacade

renderStatusHTML

public void renderStatusHTML(Writer out)
                      throws IOException

Deprecated. moved to routerconsole

Specified by:

renderStatusHTML in interface Service

Throws:

IOException

selectPeersInTooManyTunnels

public Set<Hash> selectPeersInTooManyTunnels()

For reliability reasons, don't allow a peer in more than x% of client and exploratory tunnels. This also will prevent a single huge-capacity (or malicious) peer from taking all the tunnels in the network (although it would be nice to limit the % of total network tunnels to 10% or so, but that appears to be too low to set as a default here... much lower than 33% will push client tunnels out of the fast tier into high cap or beyond...) Possible improvement - restrict based on count per IP, or IP block, to slightly increase costs of collusion

Specified by:

selectPeersInTooManyTunnels in interface TunnelManagerFacade

Returns:

Set of peers that should not be allowed in another tunnel

getInboundClientPools

public Map<Hash,TunnelPool> getInboundClientPools()

for TunnelRenderer in router console

Specified by:

getInboundClientPools in interface TunnelManagerFacade

getOutboundClientPools

public Map<Hash,TunnelPool> getOutboundClientPools()

for TunnelRenderer in router console

Specified by:

getOutboundClientPools in interface TunnelManagerFacade

getInboundExploratoryPool

public TunnelPool getInboundExploratoryPool()

For TunnelRenderer in router console

Specified by:

getInboundExploratoryPool in interface TunnelManagerFacade

Returns:

non-null

getOutboundExploratoryPool

public TunnelPool getOutboundExploratoryPool()

For TunnelRenderer in router console

Specified by:

getOutboundExploratoryPool in interface TunnelManagerFacade

Returns:

non-null

fail

public void fail(Hash peer)

Fail all outbound tunnels with this peer as first hop, and all inbound tunnels with this peer as the last hop, baecause we can't contact it any more. This is most likely to be triggered by an outbound tunnel.

Specified by:

fail in interface TunnelManagerFacade

Since:

0.8.13