content: /*
   * Copyright (C) 2018 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.
   */
  
  package com.android.ike.ikev2.message;
  
  import java.nio.ByteBuffer;
  /**
   * IkeUnsupportedPayload represents anunsupported payload.
   *
   * <p>This special payload is only created in decoding process.
   *
   * @see <a href="https://tools.ietf.org/html/rfc7296#section-2.5">RFC 7296, Internet Key Exchange
   *     Protocol Version 2 (IKEv2)</a>
   */
  final class IkeUnsupportedPayload extends IkePayload {
      /**
       * Construct an instance of IkeSaPayload in the context of IkePayloadFactory.
       *
       * @param payload indicates the current payload type
       * @param critical indicates if it is a critical payload.
       */
      IkeUnsupportedPayload(int payload, boolean critical) {
          super(payload, critical);
      }
  
      /**
       * Throw an Exception when trying to encode this payload.
       *
       * @throws UnsupportedOperationException for this payload.
       */
      @Override
      protected void encodeToByteBuffer(@PayloadType int nextPayload, ByteBuffer byteBuffer) {
          throw new UnsupportedOperationException(
                  "It is not supported to encode a " + getTypeString());
      }
  
      /**
       * Throw an Exception when trying to get payload length
       *
       * @throws UnsupportedOperationException for this payload.
       */
      @Override
      protected int getPayloadLength() {
          throw new UnsupportedOperationException(
                  "It is not supported to get payload length of " + getTypeString());
      }
  
      /**
       * Return the payload type as a String.
       *
       * @return the payload type as a String.
       */
      @Override
      public String getTypeString() {
          return "Unsupported Payload";
      }
  }
  