/*
    * ====================================================================
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.http.impl.nio.conn;
  
  import java.net.InetAddress;
  
  import org.apache.http.HttpException;
  import org.apache.http.HttpHost;
  import org.apache.http.HttpRequest;
  import org.apache.http.client.protocol.ClientContext;
  import org.apache.http.conn.params.ConnRouteParams;
  import org.apache.http.conn.routing.HttpRoute;
  import org.apache.http.conn.routing.HttpRoutePlanner;
  import org.apache.http.nio.conn.scheme.AsyncScheme;
  import org.apache.http.nio.conn.scheme.AsyncSchemeRegistry;
  import org.apache.http.nio.conn.scheme.LayeringStrategy;
  import org.apache.http.protocol.HttpContext;
  
  @Deprecated
  public class DefaultHttpAsyncRoutePlanner implements HttpRoutePlanner {
  
      private final AsyncSchemeRegistry schemeRegistry;
  
      public DefaultHttpAsyncRoutePlanner(final AsyncSchemeRegistry schemeRegistry) {
          super();
          this.schemeRegistry = schemeRegistry;
      }
  
      private AsyncSchemeRegistry getSchemeRegistry(final HttpContext context) {
          AsyncSchemeRegistry reg = (AsyncSchemeRegistry) context.getAttribute(
                  ClientContext.SCHEME_REGISTRY);
          if (reg == null) {
              reg = this.schemeRegistry;
          }
          return reg;
      }
  
      public HttpRoute determineRoute(
              final HttpHost target,
              final HttpRequest request,
              final HttpContext context) throws HttpException {
          if (request == null) {
              throw new IllegalStateException("Request may not be null");
          }
          HttpRoute route = ConnRouteParams.getForcedRoute(request.getParams());
          if (route != null) {
              return route;
          }
          if (target == null) {
              throw new IllegalStateException("Target host may be null");
          }
          final InetAddress local = ConnRouteParams.getLocalAddress(request.getParams());
          final HttpHost proxy = ConnRouteParams.getDefaultProxy(request.getParams());
          AsyncScheme scheme;
          try {
              final AsyncSchemeRegistry registry = getSchemeRegistry(context);
              scheme = registry.getScheme(target);
          } catch (final IllegalStateException ex) {
              throw new HttpException(ex.getMessage());
          }
          final LayeringStrategy layeringStrategy = scheme.getLayeringStrategy();
          final boolean secure = layeringStrategy != null && layeringStrategy.isSecure();
          if (proxy == null) {
              route = new HttpRoute(target, local, secure);
          } else {
              route = new HttpRoute(target, local, proxy, secure);
          }
          return route;
      }
  
  }