in sample_app/onvif_camera_mock/artifacts/wsdd/src/wsdd.c [194:207]
void check_param()
{
if(!wsdd_param.if_name)
daemon_error_exit("Error: network interface not set (see opt --if_name)\n");
if(!wsdd_param.type)
daemon_error_exit("Error: type of ONVIF service not set (see opt --type)\n");
if(!wsdd_param.scope)
daemon_error_exit("Error: scope of ONVIF service not set (see opt --scope)\n");
if(!wsdd_param.xaddr)
daemon_error_exit("Error: URL of ONVIF service not set (see opt --xaddr)\n");
}