## net.i2p.router.networkdb.kademlia
Class PeerSelector

    java.lang.Object
      net.i2p.router.networkdb.kademlia.PeerSelector

Direct Known Subclasses:
  FloodfillPeerSelector

     class PeerSelector

extends Object

Mostly unused, see overrides in FloodfillPeerSelector

Field Summary
`protected RouterContext` `_context`
`protected Log` `_log`

Constructor Summary
`PeerSelector(RouterContext ctx)`

Method Summary
`(package private) List<Hash>` `selectMostReliablePeers(Hash key, int numClosest, Set<Hash> alreadyChecked, KBucketSet kbuckets)` UNUSED - See FloodfillPeerSelector override Search through the kbucket set to find the most reliable peers close to the given key, skipping all of the ones already checked List will not include our own hash.
`(package private) List<Hash>` `selectNearest(Hash key, int maxNumRouters, Set<Hash> peersToIgnore, KBucketSet kbuckets)` UNUSED - See FloodfillPeerSelector override Generic KBucket filtering to find the hashes close to a key, regardless of other considerations.
`(package private) List<Hash>` `selectNearestExplicit(Hash key, int maxNumRouters, Set<Hash> peersToIgnore, KBucketSet kbuckets)` Ignore KBucket ordering and do the XOR explicitly per key.
`(package private) List<Hash>` `selectNearestExplicitThin(Hash key, int maxNumRouters, Set<Hash> peersToIgnore, KBucketSet kbuckets)` UNUSED - See FloodfillPeerSelector override Ignore KBucket ordering and do the XOR explicitly per key.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### _log

    protected final Log _log

### _context

    protected final RouterContext _context

Constructor Detail

### PeerSelector

    public PeerSelector(RouterContext ctx)

Method Detail

### selectMostReliablePeers

    List<Hash> selectMostReliablePeers(Hash key,
                                       int numClosest,
                                       Set<Hash> alreadyChecked,
                                       KBucketSet kbuckets)

  UNUSED - See FloodfillPeerSelector override Search through the kbucket set to find the most reliable peers close to the given key, skipping all of the ones already checked List will not include our own hash.

  Returns:
    ordered list of Hash objects

### selectNearestExplicit

    List<Hash> selectNearestExplicit(Hash key,
                                     int maxNumRouters,
                                     Set<Hash> peersToIgnore,
                                     KBucketSet kbuckets)

  Ignore KBucket ordering and do the XOR explicitly per key. Runs in O(n*log(n)) time (n=routing table size with c ~ 32 xor ops). This gets strict ordering on closest List will not include our own hash.

  Returns:
    List of Hash for the peers selected, ordered by bucket (but intra bucket order is not defined)

### selectNearestExplicitThin

    List<Hash> selectNearestExplicitThin(Hash key,
                                         int maxNumRouters,
                                         Set<Hash> peersToIgnore,
                                         KBucketSet kbuckets)

  UNUSED - See FloodfillPeerSelector override Ignore KBucket ordering and do the XOR explicitly per key. Runs in O(n*log(n)) time (n=routing table size with c ~ 32 xor ops). This gets strict ordering on closest List will not include our own hash.

  Returns:
    List of Hash for the peers selected, ordered by bucket (but intra bucket order is not defined)

### selectNearest

    List<Hash> selectNearest(Hash key,
                             int maxNumRouters,
                             Set<Hash> peersToIgnore,
                             KBucketSet kbuckets)

  UNUSED - See FloodfillPeerSelector override Generic KBucket filtering to find the hashes close to a key, regardless of other considerations. This goes through the kbuckets, starting with the key's location, moving towards us, and then away from the key's location's bucket, selecting peers until we have numClosest. List MAY INCLUDE our own router - add to peersToIgnore if you don't want

  Parameters:
    `key` - the original key (NOT the routing key)
    `peersToIgnore` - can be null
  Returns:
    List of Hash for the peers selected, ordered by bucket (but intra bucket order is not defined)