HttpComponents Client Source Code Files
HttpComponents Client Source Code Files are provided in the
source package file, httpcomponents-client-5.2-src.zip.
You can download httpcomponents-client-5.2-src.zip as described in the previous tutorial and go to the "httpclient5/src" sub-folder to view Source Code files.
You can also browse HttpComponents Client Source Code below:
✍: FYIcenter.com
⏎ org/apache/hc/client5/http/impl/async/MinimalH2AsyncClient.java
/*
* ====================================================================
* 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.hc.client5.http.impl.async;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.concurrent.CancellationException;
import java.util.concurrent.Future;
import java.util.concurrent.ThreadFactory;
import org.apache.hc.client5.http.DnsResolver;
import org.apache.hc.client5.http.config.Configurable;
import org.apache.hc.client5.http.config.ConnectionConfig;
import org.apache.hc.client5.http.config.RequestConfig;
import org.apache.hc.client5.http.impl.ConnPoolSupport;
import org.apache.hc.client5.http.impl.ExecSupport;
import org.apache.hc.client5.http.impl.classic.RequestFailedException;
import org.apache.hc.client5.http.impl.nio.MultihomeConnectionInitiator;
import org.apache.hc.client5.http.protocol.HttpClientContext;
import org.apache.hc.core5.annotation.Contract;
import org.apache.hc.core5.annotation.ThreadingBehavior;
import org.apache.hc.core5.concurrent.Cancellable;
import org.apache.hc.core5.concurrent.ComplexCancellable;
import org.apache.hc.core5.concurrent.FutureCallback;
import org.apache.hc.core5.function.Resolver;
import org.apache.hc.core5.http.EntityDetails;
import org.apache.hc.core5.http.Header;
import org.apache.hc.core5.http.HttpException;
import org.apache.hc.core5.http.HttpHost;
import org.apache.hc.core5.http.HttpResponse;
import org.apache.hc.core5.http.nio.AsyncClientExchangeHandler;
import org.apache.hc.core5.http.nio.AsyncPushConsumer;
import org.apache.hc.core5.http.nio.CapacityChannel;
import org.apache.hc.core5.http.nio.DataStreamChannel;
import org.apache.hc.core5.http.nio.HandlerFactory;
import org.apache.hc.core5.http.nio.RequestChannel;
import org.apache.hc.core5.http.nio.command.RequestExecutionCommand;
import org.apache.hc.core5.http.nio.command.ShutdownCommand;
import org.apache.hc.core5.http.nio.ssl.TlsStrategy;
import org.apache.hc.core5.http.protocol.HttpContext;
import org.apache.hc.core5.io.CloseMode;
import org.apache.hc.core5.reactor.Command;
import org.apache.hc.core5.reactor.ConnectionInitiator;
import org.apache.hc.core5.reactor.DefaultConnectingIOReactor;
import org.apache.hc.core5.reactor.IOEventHandlerFactory;
import org.apache.hc.core5.reactor.IOReactorConfig;
import org.apache.hc.core5.reactor.IOSession;
import org.apache.hc.core5.util.Timeout;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Minimal implementation of HTTP/2 only {@link CloseableHttpAsyncClient}. This client
* is optimized for HTTP/2 multiplexing message transport and does not support advanced
* HTTP protocol functionality such as request execution via a proxy, state management,
* authentication and request redirects.
* <p>
* Concurrent message exchanges with the same connection route executed by
* this client will get automatically multiplexed over a single physical HTTP/2
* connection.
* </p>
*
* @since 5.0
*/
@Contract(threading = ThreadingBehavior.SAFE_CONDITIONAL)
public final class MinimalH2AsyncClient extends AbstractMinimalHttpAsyncClientBase {
private static final Logger LOG = LoggerFactory.getLogger(MinimalH2AsyncClient.class);
private final InternalH2ConnPool connPool;
private final ConnectionInitiator connectionInitiator;
MinimalH2AsyncClient(
final IOEventHandlerFactory eventHandlerFactory,
final AsyncPushConsumerRegistry pushConsumerRegistry,
final IOReactorConfig reactorConfig,
final ThreadFactory threadFactory,
final ThreadFactory workerThreadFactory,
final DnsResolver dnsResolver,
final TlsStrategy tlsStrategy) {
super(new DefaultConnectingIOReactor(
eventHandlerFactory,
reactorConfig,
workerThreadFactory,
LoggingIOSessionDecorator.INSTANCE,
LoggingExceptionCallback.INSTANCE,
null,
ioSession -> ioSession.enqueue(new ShutdownCommand(CloseMode.GRACEFUL), Command.Priority.IMMEDIATE)),
pushConsumerRegistry,
threadFactory);
this.connectionInitiator = new MultihomeConnectionInitiator(getConnectionInitiator(), dnsResolver);
this.connPool = new InternalH2ConnPool(this.connectionInitiator, object -> null, tlsStrategy);
}
@Override
public Cancellable execute(
final AsyncClientExchangeHandler exchangeHandler,
final HandlerFactory<AsyncPushConsumer> pushHandlerFactory,
final HttpContext context) {
final ComplexCancellable cancellable = new ComplexCancellable();
try {
if (!isRunning()) {
throw new CancellationException("Request execution cancelled");
}
final HttpClientContext clientContext = context != null ? HttpClientContext.adapt(context) : HttpClientContext.create();
exchangeHandler.produceRequest((request, entityDetails, context1) -> {
RequestConfig requestConfig = null;
if (request instanceof Configurable) {
requestConfig = ((Configurable) request).getConfig();
}
if (requestConfig != null) {
clientContext.setRequestConfig(requestConfig);
} else {
requestConfig = clientContext.getRequestConfig();
}
@SuppressWarnings("deprecation")
final Timeout connectTimeout = requestConfig.getConnectTimeout();
final HttpHost target = new HttpHost(request.getScheme(), request.getAuthority());
final Future<IOSession> sessionFuture = connPool.getSession(target, connectTimeout,
new FutureCallback<IOSession>() {
@Override
public void completed(final IOSession session) {
final AsyncClientExchangeHandler internalExchangeHandler = new AsyncClientExchangeHandler() {
@Override
public void releaseResources() {
exchangeHandler.releaseResources();
}
@Override
public void failed(final Exception cause) {
exchangeHandler.failed(cause);
}
@Override
public void cancel() {
failed(new RequestFailedException("Request aborted"));
}
@Override
public void produceRequest(
final RequestChannel channel,
final HttpContext context1) throws HttpException, IOException {
channel.sendRequest(request, entityDetails, context1);
}
@Override
public int available() {
return exchangeHandler.available();
}
@Override
public void produce(final DataStreamChannel channel) throws IOException {
exchangeHandler.produce(channel);
}
@Override
public void consumeInformation(
final HttpResponse response,
final HttpContext context1) throws HttpException, IOException {
exchangeHandler.consumeInformation(response, context1);
}
@Override
public void consumeResponse(
final HttpResponse response,
final EntityDetails entityDetails,
final HttpContext context1) throws HttpException, IOException {
exchangeHandler.consumeResponse(response, entityDetails, context1);
}
@Override
public void updateCapacity(final CapacityChannel capacityChannel) throws IOException {
exchangeHandler.updateCapacity(capacityChannel);
}
@Override
public void consume(final ByteBuffer src) throws IOException {
exchangeHandler.consume(src);
}
@Override
public void streamEnd(final List<? extends Header> trailers) throws HttpException, IOException {
exchangeHandler.streamEnd(trailers);
}
};
if (LOG.isDebugEnabled()) {
final String exchangeId = ExecSupport.getNextExchangeId();
clientContext.setExchangeId(exchangeId);
if (LOG.isDebugEnabled()) {
LOG.debug("{} executing message exchange {}", exchangeId, ConnPoolSupport.getId(session));
}
session.enqueue(
new RequestExecutionCommand(
new LoggingAsyncClientExchangeHandler(LOG, exchangeId, internalExchangeHandler),
pushHandlerFactory,
cancellable,
clientContext),
Command.Priority.NORMAL);
} else {
session.enqueue(
new RequestExecutionCommand(
internalExchangeHandler,
pushHandlerFactory,
cancellable,
clientContext),
Command.Priority.NORMAL);
}
}
@Override
public void failed(final Exception ex) {
exchangeHandler.failed(ex);
}
@Override
public void cancelled() {
exchangeHandler.cancel();
}
});
cancellable.setDependency(() -> sessionFuture.cancel(true));
}, context);
} catch (final HttpException | IOException | IllegalStateException ex) {
exchangeHandler.failed(ex);
}
return cancellable;
}
/**
* Sets {@link Resolver} for {@link ConnectionConfig} on a per host basis.
*
* @since 5.2
*/
public void setConnectionConfigResolver(final Resolver<HttpHost, ConnectionConfig> connectionConfigResolver) {
connPool.setConnectionConfigResolver(connectionConfigResolver);
}
}
⏎ org/apache/hc/client5/http/impl/async/MinimalH2AsyncClient.java
Or download all them as a single archive file:
File name: httpclient5-5.2-fyi.zip File size: 625318 bytes Release date: 2022-11-10 Download
⇒ Download and Install HttpComponents Core Binary Package
⇐ Download and Install HttpComponents Client Source Package
2023-03-26, 23320👍, 1💬
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