private Message createJGMessage(byte[] msgBytes, Address src, Address dest, short version) {
    Message msg = new Message();
    msg.setDest(dest);
    msg.setSrc(src);
    msg.setObject(msgBytes);
    msg.setFlag(Message.Flag.NO_RELIABILITY);
    msg.setFlag(Message.Flag.NO_FC);
    msg.setFlag(Message.Flag.DONT_BUNDLE);
    msg.setFlag(Message.Flag.OOB);
    return msg;
  }
GMSPingPonger is used to detect whether a member exists by sending UDP Ping and Pong
messages. A member can send a Ping message to another member and receive a Pong message
in response. GMSPingPonger is largely used to detect whether a quorum of the cluster
is reachable.
geode-membership/src/main/java/org/apache/geode/distributed/internal/membership/gms/messenger/GMSPingPonger.java