C++ definition

Listens on a UDP port and sends back each received packet to its sender. Note: when used together with ~UdpBasicApp, ~UdpBasicApp's "received packet lifetime" statistic will record round-trip times.

Inheritance diagram

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

Extends

Name	Type	Description
SimpleModule	simple module	Base module for all INET simple modules.

Parameters

Name	Type	Default value	Description
displayStringTextFormat	string	"echoed: {numEchoed} pks"	Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
interfaceTableModule	string		The path to the InterfaceTable module
localPort	int		Local port to listen on
stopOperationExtraTime	double	-1s	Extra time after lifecycle stop operation finished
stopOperationTimeout	double	2s	Timeout value for lifecycle stop operation

Properties

Name	Value	Description
class	UdpEchoApp
display	i=block/app
lifecycleSupport

Gates

Name	Direction	Size	Description
socketIn	input
socketOut	output

Signals

Name	Type	Unit	Description
packetSent	inet::Packet

Statistics

Name	Title	Source	Record	Unit	Interpolation Mode	Description
echoedPk	packets echoed	packetSent	count, sum(packetBytes), vector(packetBytes)		none

Source code

//
// Listens on a UDP port and sends back each received packet to its sender.
// Note: when used together with ~UdpBasicApp, ~UdpBasicApp's "received packet
// lifetime" statistic will record round-trip times.
//
simple UdpEchoApp extends SimpleModule like IApp
{
    parameters:
        @class(UdpEchoApp);
        string interfaceTableModule;   // The path to the InterfaceTable module
        int localPort;  // Local port to listen on
        displayStringTextFormat = default("echoed: {numEchoed} pks");
        @display("i=block/app");
        @lifecycleSupport;
        double stopOperationExtraTime @unit(s) = default(-1s);    // Extra time after lifecycle stop operation finished
        double stopOperationTimeout @unit(s) = default(2s);    // Timeout value for lifecycle stop operation
        @signal[packetSent](type=inet::Packet);
        @statistic[echoedPk](title="packets echoed"; source=packetSent; record=count,"sum(packetBytes)","vector(packetBytes)"; interpolationmode=none);
    gates:
        input socketIn @labels(UdpCommand/up);
        output socketOut @labels(UdpCommand/down);
}

File: src/inet/applications/udpapp/UdpEchoApp.ned

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