gps.protocol.BT.algorithm
Class BTAlgorithmPeerSelectionAtPeer

java.lang.Object
  gps.protocol.BT.algorithm.BTAlgorithmPeerSelectionAtPeer

public class BTAlgorithmPeerSelectionAtPeer
extends java.lang.Object

selects peers to send request

Version:

1.2, 6/20/2005

Author:

Weishuai Yang

Field Summary

static int	DEFAULT_PEER_NUM_LIMIT default peer number to send request
int	peerNumLimit peer number to send request

Constructor Summary

BTAlgorithmPeerSelectionAtPeer(int n)
constructs peer selection algorithm object

Method Summary

java.util.ArrayList

selectPeers(java.util.List list) selects peers having documents from peers local record

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_PEER_NUM_LIMIT

public static int DEFAULT_PEER_NUM_LIMIT

default peer number to send request

peerNumLimit

public int peerNumLimit

peer number to send request

Constructor Detail

BTAlgorithmPeerSelectionAtPeer

public BTAlgorithmPeerSelectionAtPeer(int n)

constructs peer selection algorithm object

Parameters:

n - seed for random object

Method Detail

selectPeers

public java.util.ArrayList selectPeers(java.util.List list)

selects peers having documents from peers local record

Parameters:

list - local record of peers having this document

Returns:

peer list to send request to one difference of the slectPeers algorithm between peer side and tracker side is that selected nodes are removed from the passed-in list for the peer side selection, but not for tracker side selection.