Apache HttpComponents – Apache HttpComponents

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class="builtBy"><img class="builtBy" alt="ApacheCon" src="https://www.apache.org/events/current-event-125x125.png" /></a> <a href="https://maven.apache.org/" title="Maven" class="builtBy"><img class="builtBy" alt="Maven" src="https://maven.apache.org/images/logos/maven-feather.png" /></a> </div> </div> </header> <main id="bodyColumn" class="span10" >  <h1>Apache HttpComponents</h1> <p>The Apache HttpComponents project is responsible for creating and maintaining a toolset of low level Java components focused on HTTP and associated protocols.</p> <p>This project functions under the Apache Software Foundation (<a class="externalLink" href="https://www.apache.org">https://www.apache.org</a>), and is part of a larger community of developers and users.</p><section> <h2><a name="HttpComponents_Overview"></a>HttpComponents Overview</h2> <p>The Hyper-Text Transfer Protocol (HTTP) is perhaps the most significant protocol used on the Internet today. Web services, network-enabled appliances and the growth of network computing continue to expand the role of the HTTP protocol beyond user-driven web browsers, while increasing the number of applications that require HTTP support.</p> <p>Designed for extension while providing robust support for the base HTTP protocol, the HttpComponents may be of interest to anyone building HTTP-aware client and server applications such as web browsers, web spiders, HTTP proxies, web service transport libraries, or systems that leverage or extend the HTTP protocol for distributed communication.</p></section><section> <h2><a name="HttpComponents_Structure"></a>HttpComponents Structure</h2><section> <h3><a name="HttpComponents_Core"></a>HttpComponents Core</h3> <p><a href="./httpcomponents-core-ga/">HttpCore</a> is a set of low level HTTP transport components that can be used to build custom client and server side HTTP services with a minimal footprint. HttpCore supports two I/O models: blocking I/O model based on the classic Java I/O and non-blocking, event driven I/O model based on Java NIO.</p></section><section> <h3><a name="HttpComponents_Client"></a>HttpComponents Client</h3> <p><a href="./httpcomponents-client-ga/">HttpClient</a> is a HTTP/1.1 compliant HTTP agent implementation based on HttpCore. It also provides reusable components for client-side authentication, HTTP state management, and HTTP connection management. HttpComponents Client is a successor of and replacement for <a class="externalLink" href="https://hc.apache.org/httpclient-legacy/index.html">Commons HttpClient 3.x</a>. Users of Commons HttpClient are strongly encouraged to upgrade.</p></section><section> <h3><a name="Commons_HttpClient_.28legacy.29"></a>Commons HttpClient (legacy)</h3> <p>Commons HttpClient 3.x codeline is at the end of life. All users of Commons HttpClient 3.x are strongly encouraged to upgrade to HttpClient 4.1.</p></section></section> </main> </div> </div> <hr/> <footer> <div class="container-fluid"> <div class="row-fluid"> <p>© 2005–2025 <a href="https://www.apache.org/">The Apache Software Foundation</a> </p> </div> </div> </footer> </body> </html>

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Apache HttpComponents – Apache HttpComponents