static void dissect_INFO_REPLY(tvbuff_t *tvb, packet_info *pinfo, gint offset, guint8 flags,
                const guint encoding, int octets_to_next_header, proto_tree *tree) {
  /* RTPS 1.0/1.1:
   *   INFO_REPLY is *NOT* the same thing as the old INFO_REPLY.
   *
   * RTPS 1.2/2.0:
   * 0...2...........7...............15.............23...............31
   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   * |   INFO_REPLY  |X|X|X|X|X|X|M|E|      octetsToNextHeader       |
   * +---------------+---------------+---------------+---------------+
   * |                                                               |
   * ~ LocatorList unicastReplyLocatorList                           ~
   * |                                                               |
   * +---------------+---------------+---------------+---------------+
   * |                                                               |
   * ~ LocatorList multicastReplyLocatorList [only if M==1]          ~
   * |                                                               |
   * +---------------+---------------+---------------+---------------+
   */

  int min_len;
  proto_item *octet_item;

  proto_tree_add_bitmask_value(tree, tvb, offset + 1, hf_rtps_sm_flags, ett_rtps_flags, INFO_REPLY_FLAGS, flags);

  octet_item = proto_tree_add_item(tree,
                        hf_rtps_sm_octets_to_next_header,
                        tvb,
                        offset + 2,
                        2,
                        encoding);

  min_len = 4;
  if ((flags & FLAG_INFO_REPLY_M) != 0) min_len += 4;

  if (octets_to_next_header < min_len) {
    expert_add_info_format(pinfo, octet_item, &ei_rtps_sm_octets_to_next_header_error, "(Error: should be >= %u)", min_len);
    return;
  }

  offset += 4;

  /* unicastReplyLocatorList */
  offset = rtps_util_add_locator_list(tree, pinfo, tvb, offset, "unicastReplyLocatorList", encoding);

  /* multicastReplyLocatorList */
  if ((flags & FLAG_INFO_REPLY_M) != 0) {
    /*offset = */rtps_util_add_locator_list(tree, pinfo, tvb, offset, "multicastReplyLocatorList", encoding);
  }
}
static void dissect_INFO_REPLY(tvbuff_t *tvb, packet_info *pinfo, gint offset, guint8 flags,
                const guint encoding, int octets_to_next_header, proto_tree *tree) {
   

  int min_len;
  proto_item *octet_item;

  proto_tree_add_bitmask_value(tree, tvb, offset + 1, hf_rtps_sm_flags, ett_rtps_flags, INFO_REPLY_FLAGS, flags);

  octet_item = proto_tree_add_item(tree,
                        hf_rtps_sm_octets_to_next_header,
                        tvb,
                        offset + 2,
                        2,
                        encoding);

  min_len = 4;
  if ((flags & FLAG_INFO_REPLY_M) != 0) min_len += 4;

  if (octets_to_next_header < min_len) {
    expert_add_info_format(pinfo, octet_item, &ei_rtps_sm_octets_to_next_header_error, "(Error: should be >= %u)", min_len);
    return;
  }

  offset += 4;

   
  offset = rtps_util_add_locator_list(tree, pinfo, tvb, offset, "unicastReplyLocatorList", encoding);

   
  if ((flags & FLAG_INFO_REPLY_M) != 0) {
     rtps_util_add_locator_list(tree, pinfo, tvb, offset, "multicastReplyLocatorList", encoding);
  }
}