Simple Module Vast

Package: oversim.overlay.vast
File: src/overlay/vast/Vast.ned

C++ definition

(no description)

Vast

Usage diagram:

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Inheritance diagram:

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Extends:

Name Type Description
BaseOverlay simple module

Base class for overlay implementations

Used in compound modules:

Name Type Description
OverlayVast compound module (no description)

Parameters:

Name Type Default value Description
rpcUdpTimeout double

default timeout value for direct RPCs

rpcKeyTimeout double

default timeout value for routed RPCs

optimizeTimeouts bool

calculate timeouts from measured RTTs and network coordinates

rpcExponentialBackoff bool

if true, doubles the timeout for every retransmission

localPort int

UDP port for overlay messages

overlayId int

identifies the overlay this node belongs to (used for multiple overlays)

debugOutput bool

enable debug output

keyLength int

overlay key length in bits

nodeId string

optional nodeId as string in hexadecimal notation

useCommonAPIforward bool

enable CommonAPI forward() calls

drawOverlayTopology bool

draw arrow to successor node?

hopCountMax int

maximum number of overlay hops

recNumRedundantNodes int

numRedundantNodes for recursive routing

joinOnApplicationRequest bool

only join the overlay on application request

collectPerHopDelay bool

delay statistics for single hops

routeMsgAcks bool

use RPCs for route messages

lookupRedundantNodes int

number of next hops in each step

lookupParallelPaths int

number of parallel paths

lookupParallelRpcs int

number of nodes to ask in parallel

lookupVerifySiblings bool

true, if siblings need to be authenticated with a ping

lookupMajoritySiblings bool

true, if sibling candidates are selected by a majority decision if using parallel paths

lookupMerge bool

true, if parallel Rpc results should be merged

lookupFailedNodeRpcs bool

communicate failed nodes

lookupStrictParallelRpcs bool

limited the number of concurrent rpcs to parameter parallelRpcs

lookupUseAllParallelResponses bool

merge all parallel responses from earlier steps

lookupNewRpcOnEveryTimeout bool

send a new RPC immediately after an RPC timeouts

lookupNewRpcOnEveryResponse bool

send a new RPC after every response, even if there was no progress

lookupFinishOnFirstUnchanged bool

finish lookup, if the last pending RPC returned without progress

lookupVisitOnlyOnce bool

if true, the same node is never asked twice during a single lookup

lookupAcceptLateSiblings bool

if true, a FindNodeResponse with sibling flag set is always accepted, even if it is from a previous lookup step

routingType string

default routing mode (iterative, semi-recursive,...)

rejoinOnFailure bool

rejoin after loosing connection to the overlay?

sendRpcResponseToLastHop bool

needed by KBR protocols for NAT support

recordRoute bool

record visited hops on route

dropFindNodeAttack bool

if node is malicious, it tries a findNode attack

isSiblingAttack bool

if node is malicious, it tries a isSibling attack

invalidNodesAttack bool

if node is malicious, it tries a invalidNode attack

dropRouteMessageAttack bool

if node is malicious, it drops all received BaseRouteMessages

measureAuthBlock bool

if true, measure the overhead of signatures in rpc messages

restoreContext bool

if true, a node rejoins with its old nodeId and malicious state

areaDimension double

movement range from [0.0, 0.0] to [areaDimension, areaDimension]

debugVastOutput bool

enable voronoi diagram debug information

AOIWidth double

this nodes area of interest

stockListSize double

size of the stockList

joinTimeout double

retry join timeout in seconds

pingTimeout double

ping neighbor status in seconds

discoveryIntervall double

asks stock neighbors for their neighborslist

criticalCheckIntervall double

checks intervall for NeighborLevel for preventing partitions

criticalThreshold double

threshold to activate backup operation

Properties:

Name Value Description
class Vast
display i=block/circle

Gates:

Name Direction Size Description
udpIn input

gate from the UDP layer

udpOut output

gate to the UDP layer

tcpIn input

gate from the TCP layer

tcpOut output

gate to the TCP layer

appIn input

gate from the application

appOut output

gate to the application

direct_in input

gate for sendDirect

Source code:

simple Vast extends BaseOverlay
{
    parameters:
        @class(Vast);
        double areaDimension; // movement range from [0.0, 0.0] to [areaDimension, areaDimension]
        bool debugVastOutput; // enable voronoi diagram debug information
        double AOIWidth; // this nodes area of interest
        double stockListSize; // size of the stockList
        double joinTimeout @unit(s); // retry join timeout in seconds
        double pingTimeout @unit(s); // ping neighbor status in seconds
        double discoveryIntervall @unit(s); // asks stock neighbors for their neighborslist
        double criticalCheckIntervall @unit(s); // checks intervall for NeighborLevel for preventing partitions
        double criticalThreshold; // threshold to activate backup operation
}