001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.eclipse.aether.transport.jdk;
020
021import org.eclipse.aether.ConfigurationProperties;
022import org.eclipse.aether.RepositorySystemSession;
023
024/**
025 * JDK Transport configuration keys.
026 *
027 * @since 2.0.0
028 */
029public final class JdkTransporterConfigurationKeys {
030    private JdkTransporterConfigurationKeys() {}
031
032    private static final String CONFIG_PROPS_PREFIX =
033            ConfigurationProperties.PREFIX_TRANSPORT + JdkTransporterFactory.NAME + ".";
034
035    /**
036     * Use string representation of HttpClient version enum "HTTP_2" or "HTTP_1_1" to set default HTTP protocol to use.
037     *
038     * @configurationSource {@link RepositorySystemSession#getConfigProperties()}
039     * @configurationType {@link java.lang.String}
040     * @configurationDefaultValue {@link #DEFAULT_HTTP_VERSION}
041     * @configurationRepoIdSuffix Yes
042     */
043    public static final String CONFIG_PROP_HTTP_VERSION = CONFIG_PROPS_PREFIX + "httpVersion";
044
045    public static final String DEFAULT_HTTP_VERSION = "HTTP_2";
046
047    /**
048     * The hard limit of maximum concurrent requests JDK transport can do. This is a workaround for the fact, that in
049     * HTTP/2 mode, JDK HttpClient initializes this value to Integer.MAX_VALUE (!) and lowers it on first response
050     * from the remote server (but it may be too late). See JDK bug
051     * <a href="https://bugs.openjdk.org/browse/JDK-8225647">JDK-8225647</a> for details.
052     *
053     * @configurationSource {@link RepositorySystemSession#getConfigProperties()}
054     * @configurationType {@link java.lang.Integer}
055     * @configurationDefaultValue {@link #DEFAULT_MAX_CONCURRENT_REQUESTS}
056     * @configurationRepoIdSuffix Yes
057     */
058    public static final String CONFIG_PROP_MAX_CONCURRENT_REQUESTS = CONFIG_PROPS_PREFIX + "maxConcurrentRequests";
059
060    public static final int DEFAULT_MAX_CONCURRENT_REQUESTS = 100;
061}