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 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

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/**

 * <h2>HTTP Client and WebSocket APIs</h2>

 *

 * <p> Provides high-level client interfaces to HTTP (versions 1.1 and 2) and

 * low-level client interfaces to WebSocket. The main types defined are:

 *

 * <ul>

 *    <li>{@link java.net.http.HttpClient}</li>

 *    <li>{@link java.net.http.HttpRequest}</li>

 *    <li>{@link java.net.http.HttpResponse}</li>

 *    <li>{@link java.net.http.WebSocket}</li>

 * </ul>

 *

 * <p> The protocol-specific requirements are defined in the

 * <a href="https://tools.ietf.org/html/rfc7540">Hypertext Transfer Protocol

 * Version 2 (HTTP/2)</a>, the <a href="https://tools.ietf.org/html/rfc2616">

 * Hypertext Transfer Protocol (HTTP/1.1)</a>, and

 * <a href="https://tools.ietf.org/html/rfc6455">The WebSocket Protocol</a>.

 *

 *

 * <p> {@code CompletableFuture}s returned by this API will throw {@link

 * java.lang.UnsupportedOperationException} for their {@link

 * java.util.concurrent.CompletableFuture#obtrudeValue(Object) obtrudeValue}

 * and {@link java.util.concurrent.CompletableFuture#obtrudeException(Throwable)

 * obtrudeException} methods. Invoking the {@link

 * java.util.concurrent.CompletableFuture#cancel cancel} method on a {@code

 * CompletableFuture} returned by this API will not interrupt the underlying

 * operation, but may be useful to complete, exceptionally, dependent stages

 * that have not already completed.

 *

 * <p> Unless otherwise stated, {@code null} parameter values will cause methods

 * of all classes in this package to throw {@code NullPointerException}.

 *

 * @since 11

 */

package java.net.http;