/*
 * Copyright (C) 2016 AriaLyy(https://github.com/AriaLyy/Aria)
 *
 * 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.arialyy.aria.core.processor;

import com.arialyy.aria.core.inf.IEventHandler;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

/**
 * Http文件长度适配器
 */
public interface IHttpFileLenAdapter extends IEventHandler {

  /**
   * 同伙header中的数据获取文件长度
   *
   * @param headers header参数{@link URLConnection#getHeaderFields()}
   * @return 文件长度
   */
  long handleFileLen(Map<String, List<String>> headers);
}
