ApplicationLayerNodeBase

Package: inet.node.base

ApplicationLayerNodeBase

compound module

An extension of the transport layer node base that adds support for applications. Provides the highest level of abstraction for network nodes, completing the full network stack from physical to application layer.

Adds an application layer with configurable application modules and a message dispatcher that connects applications to the transport protocols. It serves as the foundation for end-user devices like hosts and specialized nodes that need application functionality.

<b>See also:</b> ~TransportLayerNodeBase, ~NetworkLayerNodeBase, ~StandardHost

status : NodeStatus Keeps track of the status of the network node (up, down, etc.) for other modules, and also displays... Source: status: NodeStatus if hasStatus { @display("p=125,80;is=s"); } clock : like IClock IClock: Interface for clock models. Source: clock: <default("")> like IClock if typename != "" { @display("p=125,320;is=s"); } energyStorage : like IEnergyStorage IEnergyStorage: The energy storage models describe devices that absorb energy produced by generators, and provide... Source: energyStorage: <default("")> like IEnergyStorage if typename != "" { @display("p=125,400;is=s"); } energyManagement : like IEnergyManagement IEnergyManagement: The energy management models monitor an energy storage, estimate its state, and control the... Source: energyManagement: <default("")> like IEnergyManagement if typename != "" { @display("p=125,480;is=s"); } energyGenerator : like IEnergyGenerator IEnergyGenerator: The energy generator models describe the energy generation process of devices over time. Source: energyGenerator: <default("")> like IEnergyGenerator if typename != "" { @display("p=125,560;is=s"); } mobility : like IMobility IMobility: The module interface for mobility models. Source: mobility: <default("")> like IMobility if typename != "" { @display("p=125,160;is=s"); } measurer : like IMeasurer IMeasurer: Interface for all standalone measurement modules. Source: measurer: <default("")> like IMeasurer if typename != "" { @display("p=125,640;is=s"); } environment : ExternalEnvironment Executes a setup command on the host OS during initialization and another teardown command during... Source: environment: ExternalEnvironment if hasEnvironment { @display("p=125,800;is=s"); } pcapRecorder[numPcapRecorders] : PcapRecorder Records PCAP traces of frames sent/received by other modules within the same host. Source: pcapRecorder[numPcapRecorders]: PcapRecorder { @display("p=125,720;is=s"); } interfaceTable : InterfaceTable Keeps the table of network interfaces. Source: interfaceTable: InterfaceTable { @display("p=125,240;is=s"); } llc : like IIeee8022Llc Source: llc: <default("")> like IIeee8022Llc if typename != "" { @display("p=375,525"); } cb : MessageDispatcher Facilitates the interconnection of applications, protocols, and network interfaces, dispatching... Source: cb: MessageDispatcher { @display("p=750,600;b=1000,5"); } bridging : like IProtocolLayer IProtocolLayer: Interface for all protocol layer modules that connect to a higher and to a lower protocol layer,... Source: bridging: <default("")> like IProtocolLayer if typename != "" { @display("p=750,675"); } bl : MessageDispatcher Facilitates the interconnection of applications, protocols, and network interfaces, dispatching... Source: bl: MessageDispatcher { @display("p=750,750;b=1000,5"); } ethernet : like IEthernetLayer IEthernetLayer: Module interface for Ethernet protocol layer implementations. Source: ethernet: <default(sizeof(ethg) > 0 ? "EthernetEncapsulation" : "")> like IEthernetLayer if typename != "" { @display("p=375,825"); } ieee8021q : like IIeee8021qLayer Source: ieee8021q: <default("")> like IIeee8021qLayer if typename != "" { @display("p=525,825"); } ieee8021r : like IIeee8021rLayer Source: ieee8021r: <default("")> like IIeee8021rLayer if typename != "" { @display("p=675,825"); } li : MessageDispatcher Facilitates the interconnection of applications, protocols, and network interfaces, dispatching... Source: li: MessageDispatcher { @display("p=750,900;b=1000,5,,,,1"); } lo[numLoInterfaces] : like ILoopbackInterface LoopbackInterface: Implements a loopback network interface. ILoopbackInterface: Interface for loopback network interfaces. Source: lo[numLoInterfaces]: <default("LoopbackInterface")> like ILoopbackInterface { @display("p=750,975,row,150"); } wlan[numWlanInterfaces] : like IWirelessInterface Ieee80211Interface: Implements an IEEE 802.11 network interface. IWirelessInterface: Interface for wireless network interfaces. Source: wlan[numWlanInterfaces]: <default("Ieee80211Interface")> like IWirelessInterface { @display("p=375,1000,row,150;q=queue"); } ppp[sizeof(pppg)] : like IPppInterface PppInterface: Implements a PPP network interface. IPppInterface: Interface for PPP network interfaces. Source: ppp[sizeof(pppg)]: <default("PppInterface")> like IPppInterface { @display("p=300,975,row,150;q=txQueue"); } eth[sizeof(ethg)] : like IEthernetInterface EthernetInterface: Represents an Ethernet network interface. IEthernetInterface: Interface for Ethernet network interfaces. Source: eth[sizeof(ethg)]: <default("EthernetInterface")> like IEthernetInterface { @display("p=900,975,row,150;q=txQueue"); } tun[numTunInterfaces] : like ITunnelInterface TunInterface: Implements a (simulated) TUN network interface. ITunnelInterface: Interface for tunnel network interfaces. Source: tun[numTunInterfaces]: <default("TunInterface")> like ITunnelInterface { @display("p=975,1000,row,150;q=txQueue"); } virt[numVirtInterfaces] : like IVirtualInterface VirtualInterface: Implements a virtual network interface. IVirtualInterface: Interface for virtual network interfaces. Source: virt[numVirtInterfaces]: <default("VirtualInterface")> like IVirtualInterface { @display("p=975,1000,row,150;q=txQueue"); } ipv4 : like INetworkLayer Ipv4NetworkLayer: Network layer of an IPv4 node. Source: ipv4: <default("Ipv4NetworkLayer")> like INetworkLayer if hasIpv4 { @display("p=375,375;q=queue"); } ipv6 : like INetworkLayer Ipv6NetworkLayer: Represents an IPv6 network layer (L3). Source: ipv6: <default("Ipv6NetworkLayer")> like INetworkLayer if hasIpv6 { @display("p=525,375;q=queue"); } generic : like INetworkLayer Source: generic: <default("")> like INetworkLayer if hasGn { @display("p=675,375;q=queue"); } nl : MessageDispatcher Facilitates the interconnection of applications, protocols, and network interfaces, dispatching... Source: nl: MessageDispatcher { @display("p=750,450;b=1000,5,,,,1"); } udp : like IUdp IUdp: UDP protocol interface. Source: udp: <default(firstAvailableOrEmpty("Udp"))> like IUdp if hasUdp { @display("p=375,225"); } tcp : like ITcp ITcp: Interface for TCP protocol implementations. Source: tcp: <default(firstAvailableOrEmpty("Tcp", "TcpLwip", "TcpNsc"))> like ITcp if hasTcp { @display("p=525,225"); } sctp : like ISctp ISctp: Interface for SCTP protocol. Source: sctp: <default(firstAvailableOrEmpty("Sctp"))> like ISctp if hasSctp { @display("p=675,225"); } quic : like IQuic IQuic: QUIC protocol interface. Source: quic: <default(firstAvailableOrEmpty("Quic"))> like IQuic if hasQuic { @display("p=825,226"); } tn : MessageDispatcher Facilitates the interconnection of applications, protocols, and network interfaces, dispatching... Source: tn: MessageDispatcher { @display("p=750,300;b=1000,5,,,,1"); } app[numApps] : like IApp IApp: Generic application interface. Source: app[numApps]: <> like IApp { @display("p=375,75,row,150"); } at : MessageDispatcher Facilitates the interconnection of applications, protocols, and network interfaces, dispatching... Source: at: MessageDispatcher { @display("p=750,150;b=1000,5,,,,1"); }

Usage diagram

The following diagram shows usage relationships between types. Unresolved types are missing from the diagram.

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Known subclasses

Name Type Description
Router compound module

A network router device with support for multiple routing protocols and network interfaces. Provides the foundation for simulating various types of routers in both wired and wireless networks.
SensorNode compound module

A wireless sensor network (WSN) node with low-power communication capabilities. Provides a specialized node type for simulating resource-constrained devices commonly used in environmental monitoring, industrial automation, and IoT applications.
StandardHost compound module

A comprehensive model of an IPv4/IPv6 host that provides a complete network stack with configurable application, transport, network, and link layers. It supports multiple network interfaces, protocols, and applications that can be customized through parameters.

Extends

Name Type Description
TransportLayerNodeBase compound module

An extension of the network layer node base with transport layer protocols. Provides support for UDP, TCP, and SCTP, enabling end-to-end communication services for applications.

Parameters

Name Type Default value Description
displayStringTextFormat string ""

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
hasStatus bool false
hasEnvironment bool false
osgModel string ""

3D model for OSG visualization, no 3D model by default
osgModelColor string ""

Tint color, no colorization by default
canvasImage string ""

Image for canvas visualization, no image by default
canvasImageColor string ""

Tint color, no colorization by default
recordPcap bool false
numPcapRecorders int recordPcap ? 1 : 0
numLoInterfaces int 1
numWlanInterfaces int 0
numEthInterfaces int 0

Minimum number of Ethernet interfaces
numPppInterfaces int 0

Minimum number of PPP interfaces
numTunInterfaces int 0
numVirtInterfaces int 0
fcsMode string "declared"
hasIpv4 bool true
hasIpv6 bool false
hasGn bool false
forwarding bool false
multicastForwarding bool false
hasUdp bool firstAvailableOrEmpty("Udp") != ""
hasTcp bool firstAvailableOrEmpty("Tcp", "TcpLwip", "TcpNsc") != ""
hasSctp bool false
hasQuic bool false
numApps int 0

Properties

Name Value Description
class NodeBase
networkNode
labels node
display bgb=1256,1125

Gates

Name Direction Size Description
radioIn [ ] input numWlanInterfaces
pppg [ ] inout numPppInterfaces
ethg [ ] inout numEthInterfaces

Unassigned submodule parameters

Name Type Default value Description
status.displayStringTextFormat string ""

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
status.initialStatus string "UP"

TODO @signal, @statistic
environment.displayStringTextFormat string ""

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
environment.initStage int 0

Initialization stage for the setup command
environment.globalNamespace bool false

Create new network namespaces under /var/run/netns/ (Linux only)
environment.namespace string ""

Name of the host OS network namespace (optional) (Linux only)
environment.setupCommand string ""

A host OS system command
environment.teardownCommand string ""

A host OS system command
pcapRecorder.displayStringTextFormat string "rec: %n pks"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
pcapRecorder.verbose bool true

Whether to log packets on the module output
pcapRecorder.recordEmptyPackets bool true

Specifies if zero length packets are recorded or not
pcapRecorder.enableConvertingPackets bool true

Specifies if converting packets to link type is allowed or not
pcapRecorder.pcapFile string ""

The PCAP file to be written, suggested value: pcapFile = "${resultdir}/${configname}-#${runnumber}" + fullpath() + ".pcap"
pcapRecorder.fileFormat string "pcapng"
pcapRecorder.snaplen int 65535

Maximum number of bytes to record per packet
pcapRecorder.timePrecision int 6

Time precision in recorded file. pcap supports only 6 (usec) or 9 (nanosec), pcapng supports more values (see 'if_tsresol' option in pcapng file format).
pcapRecorder.dumpBadFrames bool true

Enable dump of frames with hasBitError
pcapRecorder.moduleNamePatterns string "wlan[*] eth[*] ppp[*]"

Space-separated list of sibling module names to listen on
pcapRecorder.sendingSignalNames string "transmissionEnded"

Space-separated list of outbound packet signals to subscribe to
pcapRecorder.receivingSignalNames string "receptionEnded"

Space-separated list of inbound packet signals to subscribe to
pcapRecorder.dumpProtocols string "ethernetmac ppp ieee80211mac"

Space-separated list of protocol names as defined in the Protocol class
pcapRecorder.packetFilter object "*"

Which packets are considered, matches all packets by default
pcapRecorder.helpers string ""

Usable PcapRecorder::IHelper helpers for accept packettype and store/convert packet as specified linktype currently available: "inet::AckingMacToEthernetPcapRecorderHelper"
pcapRecorder.alwaysFlush bool false

Flush the pcapFile after each write to ensure that all packets are captured in case of a crash
interfaceTable.displayStringTextFormat string ""

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
interfaceTable.displayAddresses bool false

Whether to display IP addresses on links
cb.displayStringTextFormat string "processed %p pk (%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
cb.interfaceTableModule string

Module path to the ~InterfaceTable module
cb.forwardServiceRegistration bool true
cb.forwardProtocolRegistration bool true
cb.interfaceMapping object {}

Maps network interface names to connected submodule names (e.g. {"eth0": "bridging"}), overrides automatically learned dispatching; * overrides all learned network interfaces, ? overrides default
cb.serviceMapping object {}

Maps protocols to connected submodule names (e.g. {"ethernetmac": "bridging"}), overrides automatically learned dispatching; * overrides all learned services, ? overrides default
cb.protocolMapping object {}

Maps protocols to connected submodule names (e.g. {"ipv4": "bridging"}), overrides automatically learned dispatching; * overrides all learned protocols, ? overrides default
bl.displayStringTextFormat string "processed %p pk (%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
bl.interfaceTableModule string

Module path to the ~InterfaceTable module
bl.forwardServiceRegistration bool true
bl.forwardProtocolRegistration bool true
bl.interfaceMapping object {}

Maps network interface names to connected submodule names (e.g. {"eth0": "bridging"}), overrides automatically learned dispatching; * overrides all learned network interfaces, ? overrides default
bl.serviceMapping object {}

Maps protocols to connected submodule names (e.g. {"ethernetmac": "bridging"}), overrides automatically learned dispatching; * overrides all learned services, ? overrides default
bl.protocolMapping object {}

Maps protocols to connected submodule names (e.g. {"ipv4": "bridging"}), overrides automatically learned dispatching; * overrides all learned protocols, ? overrides default
li.displayStringTextFormat string "processed %p pk (%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
li.interfaceTableModule string

Module path to the ~InterfaceTable module
li.forwardServiceRegistration bool true
li.forwardProtocolRegistration bool true
li.interfaceMapping object {}

Maps network interface names to connected submodule names (e.g. {"eth0": "bridging"}), overrides automatically learned dispatching; * overrides all learned network interfaces, ? overrides default
li.serviceMapping object {}

Maps protocols to connected submodule names (e.g. {"ethernetmac": "bridging"}), overrides automatically learned dispatching; * overrides all learned services, ? overrides default
li.protocolMapping object {}

Maps protocols to connected submodule names (e.g. {"ipv4": "bridging"}), overrides automatically learned dispatching; * overrides all learned protocols, ? overrides default
eth.bitrate double
nl.displayStringTextFormat string "processed %p pk (%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
nl.interfaceTableModule string

Module path to the ~InterfaceTable module
nl.forwardServiceRegistration bool true
nl.forwardProtocolRegistration bool true
nl.interfaceMapping object {}

Maps network interface names to connected submodule names (e.g. {"eth0": "bridging"}), overrides automatically learned dispatching; * overrides all learned network interfaces, ? overrides default
nl.serviceMapping object {}

Maps protocols to connected submodule names (e.g. {"ethernetmac": "bridging"}), overrides automatically learned dispatching; * overrides all learned services, ? overrides default
nl.protocolMapping object {}

Maps protocols to connected submodule names (e.g. {"ipv4": "bridging"}), overrides automatically learned dispatching; * overrides all learned protocols, ? overrides default
tn.displayStringTextFormat string "processed %p pk (%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
tn.interfaceTableModule string

Module path to the ~InterfaceTable module
tn.forwardServiceRegistration bool true
tn.forwardProtocolRegistration bool true
tn.interfaceMapping object {}

Maps network interface names to connected submodule names (e.g. {"eth0": "bridging"}), overrides automatically learned dispatching; * overrides all learned network interfaces, ? overrides default
tn.serviceMapping object {}

Maps protocols to connected submodule names (e.g. {"ethernetmac": "bridging"}), overrides automatically learned dispatching; * overrides all learned services, ? overrides default
tn.protocolMapping object {}

Maps protocols to connected submodule names (e.g. {"ipv4": "bridging"}), overrides automatically learned dispatching; * overrides all learned protocols, ? overrides default
at.displayStringTextFormat string "processed %p pk (%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
at.interfaceTableModule string

Module path to the ~InterfaceTable module
at.forwardServiceRegistration bool true
at.forwardProtocolRegistration bool true
at.interfaceMapping object {}

Maps network interface names to connected submodule names (e.g. {"eth0": "bridging"}), overrides automatically learned dispatching; * overrides all learned network interfaces, ? overrides default
at.serviceMapping object {}

Maps protocols to connected submodule names (e.g. {"ethernetmac": "bridging"}), overrides automatically learned dispatching; * overrides all learned services, ? overrides default
at.protocolMapping object {}

Maps protocols to connected submodule names (e.g. {"ipv4": "bridging"}), overrides automatically learned dispatching; * overrides all learned protocols, ? overrides default

Source code

//
// An extension of the transport layer node base that adds support for applications.
// Provides the highest level of abstraction for network nodes, completing the full
// network stack from physical to application layer.
//
// Adds an application layer with configurable application modules and
// a message dispatcher that connects applications to the transport protocols.
// It serves as the foundation for end-user devices like hosts and specialized nodes
// that need application functionality.
//
// @see ~TransportLayerNodeBase, ~NetworkLayerNodeBase, ~StandardHost
//
module ApplicationLayerNodeBase extends TransportLayerNodeBase
{
    parameters:
        int numApps = default(0);
        @figure[applicationLayer](type=rectangle; pos=250,5; size=1000,137; lineColor=#808080; cornerRadius=5; fillColor=#ffff00; fillOpacity=0.1);
        @figure[applicationLayer.title](type=text; pos=1245,10; anchor=ne; text="application layer");
    submodules:
        app[numApps]: <> like IApp {
            @display("p=375,75,row,150");
        }
        at: MessageDispatcher {
            @display("p=750,150;b=1000,5,,,,1");
        }
    connections allowunconnected:
        for i=0..numApps-1 {
            app[i].socketOut --> at.in++;
            app[i].socketIn <-- at.out++;
        }

        at.out++ --> udp.appIn if hasUdp;
        at.in++ <-- udp.appOut if hasUdp;

        at.out++ --> tcp.appIn if hasTcp;
        at.in++ <-- tcp.appOut if hasTcp;

        at.out++ --> sctp.appIn if hasSctp;
        at.in++ <-- sctp.appOut if hasSctp;

        at.out++ --> quic.appIn if hasQuic;
        at.in++ <-- quic.appOut if hasQuic;

        at.out++ --> tn.in++;
        at.in++ <-- tn.out++;
}
File: src/inet/node/base/ApplicationLayerNodeBase.ned

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