connected-device-lib/proto/operation_type.proto

/*
 * Copyright (C) 2019 The Android Open Source Project
 *
 * 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 com.android.car.connecteddevice.proto;

option java_package = "com.android.car.connecteddevice.BleStreamProtos";
option java_outer_classname = "BleOperationProto";

// The different message types that indicate the content of the payload.
//
// Ensure that these values are positive to reduce incurring too many bytes
// to encode.
enum OperationType {
  // The contents of the payload are unknown.
  //
  // Note, this enum name is prefixed. See
  // go/proto-best-practices-checkers#enum-default-value-name-conflict
  OPERATION_TYPE_UNKNOWN = 0;

  // The payload contains handshake messages needed to set up encryption.
  ENCRYPTION_HANDSHAKE = 2;

  // The message is an acknowledgment of a previously received message. The
  // payload for this type should be empty.
  ACK = 3;

  // The payload contains a client-specific message.
  CLIENT_MESSAGE = 4;
}