DTN2 src walk

DTND::main(...) 
{
    ...
    DTNServer* dtnserver = new...
    APIServer* apiserver = new... 

    dtnserver->init();
    ...
    dtnserver->parse_conf_file(conf_file_, conf_file_set_)
    ...
    dtnserver->start();
}

init_command() inits all possible commands which can be used to execute commands in config file.

DTNServer::init()
{
    init_command();
    init_component();
}    

Parseconffile uses the created tcl commands to execute commands in conf file.