sg.edu.nus.peer.request
Class BootstrapPnPSender

java.lang.Object
  java.util.TimerTask
      sg.edu.nus.peer.request.UDPSender
          sg.edu.nus.peer.request.BootstrapPnPSender

All Implemented Interfaces:

java.lang.Runnable, java.util.EventListener, PnPListener, UDPListener

public class BootstrapPnPSender
extends UDPSender
implements PnPListener

The BootstrapPnPSender is responsible for sending UDP packets with the type of MsgType.PING out to remote nodes.

The method sendPacket() must be implemented to send UDP packages to remote peers. To obtain the IP address list of the remote peers to be contacted, just invoke the interface of PeerMaintainer.getServers().

Version:

1.0 2006-10-9

Author:

Xu Linhao

See Also:

BootstrapPnPServer, UDPSender

Constructor Summary

BootstrapPnPSender(AbstractMainFrame gui, int port)
Construct the UDP sender with specified parameters.

Method Summary

void	nodeAlive(PeerInfo info) This method will be invoked if a node is still alive.
void	nodeFailure(PeerInfo info) This method will be invoked when a node is detected as failure.

Methods inherited from class sg.edu.nus.peer.request.UDPSender

getDatagramSocket, getLocalPort, isAlive, run

Methods inherited from class java.util.TimerTask

cancel, scheduledExecutionTime

Methods inherited from class java.lang.Object

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

Constructor Detail

BootstrapPnPSender

public BootstrapPnPSender(AbstractMainFrame gui,
                          int port)
                   throws java.net.SocketException

Construct the UDP sender with specified parameters.

Parameters:

gui - the reference of the AbstractMainFrame

port - the port to be used for initializing DatagramSocket

Throws:

java.net.SocketException - if cannot initialize DatagramSocket on the specified port

Method Detail

nodeAlive

public void nodeAlive(PeerInfo info)

Description copied from interface: PnPListener

This method will be invoked if a node is still alive.

Specified by:

nodeAlive in interface PnPListener

Parameters:

info - the PeerInfo instance

nodeFailure

public void nodeFailure(PeerInfo info)

Description copied from interface: PnPListener

This method will be invoked when a node is detected as failure.

Specified by:

nodeFailure in interface PnPListener

Parameters:

info - the PeerInfo instance