int SendCapabilities::start(String args) {
    //This is where you do your stuff for a simple behaviour
    _node->announce_capabilities();
    return "SendCapabilities behaviour " + _name;
  };
void PingServer::update() {
    if (millis() > (_t+_interval)) {
      _t = millis();
     _node->announce(str);
    }
  };
int PingServer::start(String args) {
    _background = true;
    _running = true;
    _t = millis();
    str = "{\"id\":\"" + String(_node->getId()) + "\",\"PingServer\":{}}";
    _node->announce(str);
    return "Pinging server";
  };
void Link::update() {
    if (millis() > (_t+_timeoutInterval)) {
      String str = "{\"id\":\"" + String(_node->getId()) + "\",\"Unlink\":{\"peerId\":\"" + _peerId + "\"}}";
     _node->announce(str);
      _peerId = "";
      _running = false;
    }
  };
int Link::start(String args) {
    _running = true;
    if (args == name() || args.indexOf(" ")>0) {
      return "Invalid args (" + args + ") in behaviour " + name();
    }

    _t = millis();

    if (args == _peerId) {
      return "Link ping from (" + _peerId + ")";
    }

    _peerId = args;

    String str = "{\"id\":\"" + String(_node->getId()) + "\",\"Link\":{\"peerId\":\"" + _peerId + "\"}}";
    _node->announce(str);

    return "New link with (" + _peerId + ")";
  };
char * Link::args() {return "<String peerId>"; };