content: /*
   * Copyright (c) 2019 abc123lzf <abc123lzf@126.com>
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  package com.lzf.flyingsocks.client.proxy.socks;
  
  import io.netty.buffer.ByteBuf;
  import io.netty.util.ReferenceCounted;
  
  import java.util.Objects;
  
  /**
   * @author lzf abc123lzf@126.com
   * @since 2021/1/12 5:38
   */
  class UdpProxyMessage implements ReferenceCounted {
  
      private final String host;
  
      private final int port;
  
      private final ByteBuf data;
  
      public UdpProxyMessage(String host, int port, ByteBuf data) {
          if (port <= 0 || port > 65535) {
              throw new IllegalArgumentException("Port number:" + port);
          }
  
          this.host = Objects.requireNonNull(host);
          this.port = port;
          this.data = Objects.requireNonNull(data);
      }
  
      public String getHost() {
          return host;
      }
  
      public int getPort() {
          return port;
      }
  
      public ByteBuf getData() {
          if (data.refCnt() <= 0) {
              return null;
          }
          return data;
      }
  
      public boolean isSameTarget(UdpProxyMessage message) {
          return host.equals(message.host) && port == message.port;
      }
  
      @Override
      public int refCnt() {
          return data.refCnt();
      }
  
      @Override
      public UdpProxyMessage retain() {
          data.retain();
          return this;
      }
  
      @Override
      public UdpProxyMessage retain(int increment) {
          data.retain(increment);
          return this;
      }
  
      @Override
      public UdpProxyMessage touch() {
          data.touch();
          return this;
      }
  
      @Override
      public UdpProxyMessage touch(Object hint) {
          data.touch(hint);
          return this;
      }
  
      @Override
      public boolean release(int decrement) {
          return data.release(decrement);
      }
  
      @Override
      public boolean release() {
          return data.release();
      }
  
  }
  