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High level HTTP and WebSocket API

{@Incubating}

Provides high-level client interfaces to HTTP (versions 1.1 and 2) and WebSocket. The main types defined are:

The API functions asynchronously (using CompletableFuture) and work is done on the threads supplied by the client's Executor where practical.

HttpClient also provides a simple synchronous mode, where all work may be done on the calling thread.

CompletableFutures returned by this API will throw UnsupportedOperationException for their obtrudeValue and obtrudeException methods. Invoking the cancel method on a 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.

Unless otherwise stated, null parameter values will cause methods of all classes in this package to throw NullPointerException.

Since:9
/** * <h2>High level HTTP and WebSocket API</h2> * {@Incubating} * * <p> Provides high-level client interfaces to HTTP (versions 1.1 and 2) and * WebSocket. The main types defined are: * * <ul> * <li>{@link jdk.incubator.http.HttpClient}</li> * <li>{@link jdk.incubator.http.HttpRequest}</li> * <li>{@link jdk.incubator.http.HttpResponse}</li> * <li>{@link jdk.incubator.http.WebSocket}</li> * </ul> * * <p> The API functions asynchronously (using {@link java.util.concurrent.CompletableFuture}) * and work is done on the threads supplied by the client's {@link java.util.concurrent.Executor} * where practical. * * <p> {@code HttpClient} also provides a simple synchronous mode, where all * work may be done on the calling thread. * * <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 9 */
package jdk.incubator.http;