Compound Module DHTModules

Package: oversim.applications.dht
File: src/applications/dht/DHT.ned

Compound module for a simple DHT using the KBR interface

Author: Gregoire Menuel, Ingmar Baumgart

Usage diagram:

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Inheritance diagram:

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Properties:

Name	Value	Description
display	i=block/segm

Gates:

Name	Direction	Description
udpIn	input	gate from the UDP layer
from_lowerTier	input	gate from the lower tier
from_upperTier	input	gate from the upper tier
tcpIn	input	gate from the TCP layer
tcpOut	output	gate to the TCP layer
udpOut	output	gate to the UDP layer
to_lowerTier	output	gate to the lower tier
to_upperTier	output	gate to the upper tier

Unassigned submodule parameters:

Name	Type	Description
dht.rpcUdpTimeout	double	default timeout value for direct RPCs
dht.rpcKeyTimeout	double	default timeout value for routed RPCs
dht.optimizeTimeouts	bool	calculate timeouts from measured RTTs and network coordinates
dht.rpcExponentialBackoff	bool	if true, doubles the timeout for every retransmission
dht.debugOutput	bool	enable debug output
dht.numReplica	int	number of replica for stored data records
dht.numGetRequests	int	number of queried replica for get requests
dht.ratioIdentical	double	ratio of identical replica needed for a valid result
dht.secureMaintenance	bool	use a secure maintenance algorithm based on majority decisions
dht.invalidDataAttack	bool	if node is malicious, it tries a invalidData attack
dht.maintenanceAttack	bool	if node is malicious, it tries a maintenance attack

Source code:

//
// Compound module for a simple DHT using the KBR interface
//
// @author Gregoire Menuel, Ingmar Baumgart
//
module DHTModules like ITier
{
    parameters:
        @display("i=block/segm");
    gates:
        input udpIn;    // gate from the UDP layer
        input from_lowerTier;    // gate from the lower tier
        input from_upperTier;    // gate from the upper tier
        input tcpIn;    // gate from the TCP layer
        output tcpOut;    // gate to the TCP layer
        output udpOut;    // gate to the UDP layer
        output to_lowerTier;    // gate to the lower tier
        output to_upperTier;    // gate to the upper tier

    submodules:
        dht: DHT;
        dhtDataStorage: DHTDataStorage;
    connections allowunconnected:
        from_lowerTier --> dht.from_lowerTier;
        to_lowerTier <-- dht.to_lowerTier;
        from_upperTier --> dht.from_upperTier;
        to_upperTier <-- dht.to_upperTier;

}