Simple Module Vast

File: Overlay/Vast/Vast.ned

C++ definition: click here

(no description)

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OverlayVast

Implementation of the Vast overlay as described in "Scalable peer-to-peer networked virtual environment" by S.-Y. Hu and G.-M. Liao, published in NetGames �04: Proceedings of 3rd ACM SIGCOMM workshop on Network and system support for games, pages

Parameters:

Name Type Description
localPort numeric

UDP port for Vast messages

debugOutput bool

enable debug output

keyLength numeric

overlay key length in bits

useCommonAPIforward bool

enable CommonAPI forward() calls

drawOverlayTopology bool

draw arrow to successor node?

hopCountMax numeric

maximum number of overlay hops

joinOnApplicationRequest bool

only join the overlay on application request

recNumRedundantNodes numeric

numRedundantNodes for recursive routing

lookupParallelPaths numeric

number of parallel paths

lookupParallelRpcs numeric

number of nodes to ask in parallel

lookupSecure bool

true, if all nodes should be identified with a ping

lookupMerge bool

true, if parallel Rpc results should be merged

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

lookupFailedNodeRpcs bool

communicate failed nodes

lookupRedundantNodes numeric

number of next hops in each step

routeMsgAcks bool

use RPCs for route messages

routingType string

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

collectPerHopDelay bool

delay statistics for single hops

debugVastOutput bool
ignoreFalseKeys bool
AOIWidth numeric
joinTimeout numeric
pingTimeout numeric

Gates:

Name Direction Description
from_udp [ ] input

gate from the UDP layer

to_udp [ ] output

gate to the UDP layer

from_app input

gate from the application

to_app output

gate to the application

direct_in input

gate for RPC sendDirect

Source code:

simple Vast
    parameters:
        localPort: numeric,    // UDP port for Vast messages
        debugOutput: bool,    // enable debug output
        keyLength : numeric,    // overlay key length in bits
        useCommonAPIforward : bool,      // enable CommonAPI forward() calls
        drawOverlayTopology : bool,    // draw arrow to successor node?
        hopCountMax : numeric,    // maximum number of overlay hops
        joinOnApplicationRequest : bool,    // only join the overlay on application request
        recNumRedundantNodes : numeric, // numRedundantNodes for recursive routing

        lookupParallelPaths : numeric,    // number of parallel paths
        lookupParallelRpcs : numeric,    // number of nodes to ask in parallel
        lookupSecure : bool,    // true, if all nodes should be identified with a ping
        lookupMerge : bool,    // true, if parallel Rpc results should be merged
        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                                        
        lookupFailedNodeRpcs : bool,    // communicate failed nodes
        lookupRedundantNodes : numeric,    // number of next hops in each step
        routeMsgAcks : bool,            // use RPCs for route messages

        routingType : string, // default routing mode (iterative, semi-recursive,...)
        collectPerHopDelay : bool,    // delay statistics for single hops

        debugVastOutput: bool,
        ignoreFalseKeys: bool,
        AOIWidth: numeric,
        joinTimeout: numeric,
        pingTimeout: numeric;

    gates:
        in: from_udp[];    // gate from the UDP layer
        out: to_udp[];    // gate to the UDP layer
        in: from_app;    // gate from the application
        out: to_app;    // gate to the application
        in: direct_in;    // gate for RPC sendDirect
endsimple