001/*
002 * ====================================================================
003 * Licensed to the Apache Software Foundation (ASF) under one
004 * or more contributor license agreements.  See the NOTICE file
005 * distributed with this work for additional information
006 * regarding copyright ownership.  The ASF licenses this file
007 * to you under the Apache License, Version 2.0 (the
008 * "License"); you may not use this file except in compliance
009 * with the License.  You may obtain a copy of the License at
010 *
011 *   http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing,
014 * software distributed under the License is distributed on an
015 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
016 * KIND, either express or implied.  See the License for the
017 * specific language governing permissions and limitations
018 * under the License.
019 * ====================================================================
020 *
021 * This software consists of voluntary contributions made by many
022 * individuals on behalf of the Apache Software Foundation.  For more
023 * information on the Apache Software Foundation, please see
024 * <http://www.apache.org/>.
025 *
026 */
027
028package org.apache.http.impl.conn;
029
030import org.apache.http.HttpException;
031import org.apache.http.HttpHost;
032import org.apache.http.HttpRequest;
033import org.apache.http.annotation.Contract;
034import org.apache.http.annotation.ThreadingBehavior;
035import org.apache.http.conn.SchemePortResolver;
036import org.apache.http.protocol.HttpContext;
037import org.apache.http.util.Args;
038
039/**
040 * Implementation of an {@link org.apache.http.conn.routing.HttpRoutePlanner}
041 * that routes requests through a default proxy.
042 *
043 * @since 4.3
044 */
045@Contract(threading = ThreadingBehavior.IMMUTABLE_CONDITIONAL)
046public class DefaultProxyRoutePlanner extends DefaultRoutePlanner {
047
048    private final HttpHost proxy;
049
050    public DefaultProxyRoutePlanner(final HttpHost proxy, final SchemePortResolver schemePortResolver) {
051        super(schemePortResolver);
052        this.proxy = Args.notNull(proxy, "Proxy host");
053    }
054
055    public DefaultProxyRoutePlanner(final HttpHost proxy) {
056        this(proxy, null);
057    }
058
059    @Override
060    protected HttpHost determineProxy(
061        final HttpHost target,
062        final HttpRequest request,
063        final HttpContext context) throws HttpException {
064        return proxy;
065    }
066
067}