// Copyright 2025 CNCF xDS API Working Group (xDS-WG) Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto3";

package xds.core.v3;

import "xds/annotations/v3/status.proto";
import "google/protobuf/wrappers.proto";

import "validate/validate.proto";

option java_outer_classname = "CidrRangeProto";
option java_multiple_files = true;
option java_package = "com.github.xds.core.v3";
option go_package = "github.com/cncf/xds/go/xds/core/v3";

option (xds.annotations.v3.file_status).work_in_progress = true;

// CidrRange specifies an IP Address and a prefix length to construct
// the subnet mask for a `CIDR <https://tools.ietf.org/html/rfc4632>`_ range.
message CidrRange {
  // IPv4 or IPv6 address, e.g. ``192.0.0.0`` or ``2001:db8::``.
  string address_prefix = 1 [(validate.rules).string = {min_len: 1}];

  // Length of prefix, e.g. 0, 32. Defaults to 0 when unset.
  google.protobuf.UInt32Value prefix_len = 2 [(validate.rules).uint32 = {lte: 128}];
}
