HttpComponents Core Source Code Files

HttpComponents Core Source Code Files are provided in the source package file,

You can download as described in the previous tutorial and go to the "httpcore5/src" sub-folder to view Source Code files.

You can also browse HttpComponents Core Source Code below:



 * ====================================================================
 * 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
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * 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
 * <>.


import org.apache.hc.core5.annotation.Contract;
import org.apache.hc.core5.annotation.ThreadingBehavior;
import org.apache.hc.core5.http.ClassicHttpRequest;
import org.apache.hc.core5.http.ClassicHttpResponse;
import org.apache.hc.core5.http.Header;
import org.apache.hc.core5.http.HeaderElements;
import org.apache.hc.core5.http.HttpEntity;
import org.apache.hc.core5.http.HttpException;
import org.apache.hc.core5.http.HttpHeaders;
import org.apache.hc.core5.http.HttpResponse;
import org.apache.hc.core5.http.HttpStatus;
import org.apache.hc.core5.http.message.BasicClassicHttpResponse;
import org.apache.hc.core5.http.protocol.HttpContext;

 * HttpServerExpectationFilter add support for the Expect-Continue handshake
 * to the request processing pipeline.
 * @since 5.0
@Contract(threading = ThreadingBehavior.STATELESS)
public class HttpServerExpectationFilter implements HttpFilterHandler {

     * Verifies the HTTP request and decides whether it meets server expectations and the request
     * processing can continue.
     * @param request the incoming HTTP request.
     * @param context the actual execution context.
     * @return {@code true} if the request meets expectations or {@code false} otherwise.
    protected boolean verify(final ClassicHttpRequest request, final HttpContext context) throws HttpException {
        return true;

     * Generates response content entity for the final HTTP response with an error status
     * representing the cause of expectation failure.
     * @param expectationFailed the final HTTP response.
     * @return the content entity for the final HTTP response with an error status
     *  representing the cause of expectation failure.
    protected HttpEntity generateResponseContent(final HttpResponse expectationFailed) throws HttpException {
        return null;

    public final void handle(
            final ClassicHttpRequest request,
            final HttpFilterChain.ResponseTrigger responseTrigger,
            final HttpContext context,
            final HttpFilterChain chain) throws HttpException, IOException {
        final Header expect = request.getFirstHeader(HttpHeaders.EXPECT);
        final boolean expectContinue = expect != null && HeaderElements.CONTINUE.equalsIgnoreCase(expect.getValue());
        if (expectContinue) {
            final boolean verified = verify(request, context);
            if (verified) {
                responseTrigger.sendInformation(new BasicClassicHttpResponse(HttpStatus.SC_CONTINUE));
            } else {
                final ClassicHttpResponse expectationFailed = new BasicClassicHttpResponse(HttpStatus.SC_EXPECTATION_FAILED);
                final HttpEntity responseContent = generateResponseContent(expectationFailed);
        chain.proceed(request, responseTrigger, context);


Or download all them as a single archive file:

File name:
File size: 812477 bytes
Release date: 2022-11-10



Download and Install HttpComponents Core Source Package

Download and Review Apache HttpComponents-*.jar

⇑⇑ FAQ for Apache HttpComponents JAR Library

2023-03-07, 19236👍, 0💬