net.i2p.router.tunnel
Class PumpedTunnelGateway
java.lang.Object
net.i2p.router.tunnel.TunnelGateway
net.i2p.router.tunnel.PumpedTunnelGateway
public class PumpedTunnelGateway
- extends TunnelGateway
Serve as the gatekeeper for a tunnel, accepting messages, coallescing and/or
fragmenting them before wrapping them up for tunnel delivery. The flow here
is:
- add an I2NPMessage (and a target tunnel/router, if necessary)
- that message is queued up into a TunnelGateway.Pending and offered to the
assigned QueuePreprocessor.
- that QueuePreprocessor may then take off any of the TunnelGateway.Pending
messages or instruct the TunnelGateway to offer it the messages again in
a short while (in an attempt to coallesce them).
- when the QueueProcessor accepts a TunnelGateway.Pending, it preprocesses
it into fragments, forwarding each preprocessed fragment group through
the Sender.
- the Sender then encrypts the preprocessed data and delivers it to the
Receiver.
- the Receiver now has the encrypted message and may do with it as it
pleases (e.g. wrap it as necessary and enqueue it onto the OutNetMessagePool,
or if debugging, verify that it can be decrypted properly)
Method Summary |
void |
add(I2NPMessage msg,
Hash toRouter,
TunnelId toTunnel)
Add a message to be sent down the tunnel, either sending it now (perhaps
coallesced with other pending messages) or after a brief pause (_flushFrequency). |
(package private) void |
pump(java.util.List queueBuf)
run in one of the TunnelGatewayPumper's threads, this pulls pending messages
off the prequeue, adds them to the queue and then tries to preprocess the queue,
scheduling a later delayed flush as necessary. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
PumpedTunnelGateway
public PumpedTunnelGateway(I2PAppContext context,
TunnelGateway.QueuePreprocessor preprocessor,
TunnelGateway.Sender sender,
TunnelGateway.Receiver receiver,
TunnelGatewayPumper pumper)
- Parameters:
preprocessor
- this pulls Pending messages off a list, builds some
full preprocessed messages, and pumps those into the sendersender
- this takes a preprocessed message, encrypts it, and sends it to
the receiverreceiver
- this receives the encrypted message and forwards it off
to the first hop
add
public void add(I2NPMessage msg,
Hash toRouter,
TunnelId toTunnel)
- Add a message to be sent down the tunnel, either sending it now (perhaps
coallesced with other pending messages) or after a brief pause (_flushFrequency).
If it is queued up past its expiration, it is silently dropped
- Overrides:
add
in class TunnelGateway
- Parameters:
msg
- message to be sent through the tunneltoRouter
- router to send to after the endpoint (or null for endpoint processing)toTunnel
- tunnel to send to after the endpoint (or null for endpoint or router processing)
pump
void pump(java.util.List queueBuf)
- run in one of the TunnelGatewayPumper's threads, this pulls pending messages
off the prequeue, adds them to the queue and then tries to preprocess the queue,
scheduling a later delayed flush as necessary. this allows the gw.add call to
go quickly, rather than blocking its callers on potentially substantial
processing.