private void defaultToCurrentHost() {
    memberIdentifier.setProcessId(OSProcess.getId());
    try {
      if (SocketCreator.resolve_dns) {
        setHostName(LocalHostUtil.getLocalHostName());
      } else {
        setHostName(LocalHostUtil.getLocalHost().getHostAddress());
      }
    } catch (UnknownHostException ee) {
      throw new InternalGemFireError(ee);
    }
  }
Returns this client member's durable attributes or null if no durable attributes were created.
geode-core/src/main/java/org/apache/geode/distributed/internal/membership/InternalDistributedMember.java