C# Class Brunet.Graph.Graph

Graph provides the ability to test routing algorithms for ring-based structured p2p networks

Key features provided by Graph include support for Tunnels, latency, hop count, user specified latency, tweaking of network size, near neighbor count, shortcut count.

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Protected Properties

Property	Type	Description
_addr_to_index	int>.Dictionary
_addr_to_node	GraphNode>.Dictionary
_addrs	List
_latency_map	List>
_rand	System.Random

Public Methods

Method	Description
AllToAll ( ) : void
Average ( List data ) : double	Calculates the average of a data set.
BoundedBroadcast ( AHAddress caller, AHAddress from, AHAddress to ) : int	Performs the bounded broadcast using recursion.
Broadcast ( ) : int	Performs a broadcast to the entire overlay.
Broadcast ( AHAddress from ) : int	Performs a broadcast to the entire overlay.
BroadcastAverage ( ) : void
Crawl ( ) : void	Crawls the network using a random address in the network.
Crawl ( AHAddress start ) : void	Crawls the network using the given starting address.
DhtQuery ( AHAddress from, byte key ) : int
GetLeftNearTarget ( AHAddress address ) : AHAddress	Calculate the Left AHAddress of the given address.
GetNearTarget ( AHAddress address ) : AHAddress
Graph ( int count, int near, int shortcuts ) : Brunet.Collections
Graph ( int count, int near, int shortcuts, int seed ) : Brunet.Collections
Graph ( int count, int near, int shortcuts, int random_seed, List dataset ) : Brunet.Collections
ReadLatencyDataSet ( string dataset ) : List>	Loads a square matrix based latency data set from a file.
SendPacket ( AHAddress from, AHAddress to ) : List	Sends a packet from A to B returning the delay and hop count using the Greedy Routing Algorithm.
SendPacket ( AHAddress from, AHAddress to, ushort option ) : List	Sends a packet from A to B returning the delay and hop count.
StandardDeviation ( List data, double avg ) : double	Calculates the standard deviation given a data set and the average.
WriteGraphFile ( string outfile ) : void	Creates a Dot file which can generate an image using either neato with using the -n parameter or circo.

Protected Methods

Method	Description
AddConnection ( GraphNode node1, GraphNode node2, int delay ) : void	Creates an edge and a connection from node2 to node1 including the edge. Note: this is unidirectional, this must be called twice, swapping node1 with node2 for a connection to be complete.
CalculateDelay ( GraphNode node1, GraphNode node2 ) : int	Calculates the delay between two nodes.
ComputeShortcutTarget ( AHAddress addr ) : AHAddress	Calculates a shortcut using a harmonic distribution as in a Symphony-lke shortcut.
CreateNode ( AHAddress addr ) : GraphNode	Let the inheritor create their own node types
FindNodeNearestToAddress ( AHAddress addr ) : AHAddress
FixLists ( ) : void
GenerateAddress ( ) : AHAddress
MapToRing ( byte key ) : Brunet.Util.MemBlock[]

Method Details

AddConnection() protected method

Creates an edge and a connection from node2 to node1 including the edge. Note: this is unidirectional, this must be called twice, swapping node1 with node2 for a connection to be complete.

protected AddConnection ( GraphNode node1, GraphNode node2, int delay ) : void
node1	GraphNode
node2	GraphNode
delay	int
return	void

AllToAll() public method

public AllToAll ( ) : void
return	void

Average() public static method

Calculates the average of a data set.

public static Average ( List data ) : double
data	List
return	double

BoundedBroadcast() public method

Performs the bounded broadcast using recursion.

public BoundedBroadcast ( AHAddress caller, AHAddress from, AHAddress to ) : int
caller	AHAddress
from	AHAddress
to	AHAddress
return	int

Broadcast() public method

Performs a broadcast to the entire overlay.

public Broadcast ( ) : int
return	int

Broadcast() public method

Performs a broadcast to the entire overlay.

public Broadcast ( AHAddress from ) : int
from	AHAddress
return	int

BroadcastAverage() public method

public BroadcastAverage ( ) : void
return	void

CalculateDelay() protected method

Calculates the delay between two nodes.

protected CalculateDelay ( GraphNode node1, GraphNode node2 ) : int
node1	GraphNode
node2	GraphNode
return	int

ComputeShortcutTarget() protected method

Calculates a shortcut using a harmonic distribution as in a Symphony-lke shortcut.

protected ComputeShortcutTarget ( AHAddress addr ) : AHAddress
addr	AHAddress
return	AHAddress

Crawl() public method

Crawls the network using a random address in the network.

public Crawl ( ) : void
return	void

Crawl() public method

Crawls the network using the given starting address.

public Crawl ( AHAddress start ) : void
start	AHAddress
return	void

CreateNode() protected method

Let the inheritor create their own node types

protected CreateNode ( AHAddress addr ) : GraphNode
addr	AHAddress
return	GraphNode

DhtQuery() public method

public DhtQuery ( AHAddress from, byte key ) : int
from	AHAddress
key	byte
return	int

FindNodeNearestToAddress() protected method

protected FindNodeNearestToAddress ( AHAddress addr ) : AHAddress
addr	AHAddress
return	AHAddress

FixLists() protected method

protected FixLists ( ) : void
return	void

GenerateAddress() protected method

protected GenerateAddress ( ) : AHAddress
return	AHAddress

GetLeftNearTarget() public method

Calculate the Left AHAddress of the given address.

public GetLeftNearTarget ( AHAddress address ) : AHAddress
address	AHAddress
return	AHAddress

GetNearTarget() public method

public GetNearTarget ( AHAddress address ) : AHAddress
address	AHAddress
return	AHAddress

Graph() public method

public Graph ( int count, int near, int shortcuts ) : Brunet.Collections
count	int
near	int
shortcuts	int
return	Brunet.Collections

Graph() public method

public Graph ( int count, int near, int shortcuts, int seed ) : Brunet.Collections
count	int
near	int
shortcuts	int
seed	int
return	Brunet.Collections

Graph() public method

public Graph ( int count, int near, int shortcuts, int random_seed, List dataset ) : Brunet.Collections
count	int	The network size not including the clusters.
near	int	The amount of connections on the left or right of a ///node.
shortcuts	int	The amount of far connections had per node.
random_seed	int
dataset	List	A square dataset consisting of pairwise latencies.
return	Brunet.Collections

MapToRing() protected method

protected MapToRing ( byte key ) : Brunet.Util.MemBlock[]
key	byte
return	Brunet.Util.MemBlock[]

ReadLatencyDataSet() public static method

Loads a square matrix based latency data set from a file.

public static ReadLatencyDataSet ( string dataset ) : List>
dataset	string
return	List>

SendPacket() public method

Sends a packet from A to B returning the delay and hop count using the Greedy Routing Algorithm.

public SendPacket ( AHAddress from, AHAddress to ) : List
from	AHAddress
to	AHAddress
return	List

SendPacket() public method

Sends a packet from A to B returning the delay and hop count.

public SendPacket ( AHAddress from, AHAddress to, ushort option ) : List
from	AHAddress
to	AHAddress
option	ushort
return	List

StandardDeviation() public static method

Calculates the standard deviation given a data set and the average.

public static StandardDeviation ( List data, double avg ) : double
data	List
avg	double
return	double

WriteGraphFile() public method

Creates a Dot file which can generate an image using either neato with using the -n parameter or circo.

public WriteGraphFile ( string outfile ) : void
outfile	string
return	void

Property Details

_addr_to_index protected_oe property

protected Dictionary _addr_to_index
return	int>.Dictionary

_addr_to_node protected_oe property

protected Dictionary _addr_to_node
return	GraphNode>.Dictionary

_addrs protected_oe property

protected List _addrs
return	List

_latency_map protected_oe property

protected List> _latency_map
return	List>

_rand protected_oe property

protected Random,System _rand
return	System.Random