The Echo application is one of the HELICS apps available with the library Its purpose is to provide a easy way to generate an echo response to a message Mainly for testing and demos
Command line arguments¶
allowed options: command line only: -? [ --help ] produce help message -v [ --version ] display a version string --config-file arg specify a configuration file to use configuration: --local specify otherwise unspecified endpoints and publications as local( i.e.the keys will be prepended with the echo name --stop arg the time to stop the app configuration: -b [ --broker ] arg address of the broker to connect -n [ --name ] arg name of the player federate --corename arg the name of the core to create or find -c [ --core ] arg type of the core to connect to --offset arg the offset of the time steps --period arg the period of the federate --timedelta arg the time delta of the federate -i [ --coreinit ] arg the core initialization string --separator arg separator character for local federates --inputdelay arg the input delay on incoming communication of the federate --outputdelay arg the output delay for outgoing communication of the federate -f [ --flags ] arg named flag for the federate configuration: --delay arg the delay with which the echo app will echo message
also permissible are all arguments allowed for federates and any specific broker specified:
the echo executable also takes an untagged argument of a file name for example
helics_app echo echo_file.txt --stop 5
The Echo app supports JSON files some examples can be found in
the main property of the echo app is the delay time which messages are echoed.