The Apache HttpComponents project is pleased to announce 5.0-alpha3 release of HttpComponents Core.
This is a major release that renders HttpCore API incompatible with the stable 4.x branch and upgrades HTTP/1.1 and HTTP/2 protocol conformance to the requirements and recommendations of the latest protocol specification. Notable changes and features included in the 5.0 series are: * Partial support for HTTP/2 protocol and conformance to requirements and recommendations of the latest HTTP/2 protocol specification (RFC 7540, RFC 7541) Supported features: ** HPACK header compression ** stream multiplexing (client and server) ** flow control ** response push (client and server) ** message trailers ** expect-continue handshake ** connection validation (ping) ** application-layer protocol negotiation (ALPN) on Java 1.9+ ** TLS 1.2 security features Unsupported features: ** padding of outgoing frames ** stream priority ** plain connection HTTP/1.1 upgrade ** CONNECT method * Improved conformance to requirements and recommendations of the latest HTTP/1.1 protocol specification (RFC 7230, RFC 7231) * New asynchronous HTTP transport APIs consistent for both HTTP/1.1 and HTTP/2 transport. * Improved HTTP/1.1 and HTTP/2 requester and server implementations. * Redesigned connection pool implementation with reduced pool lock contention. * Plug-in mechanism for HTTP/1.1 protocol switch / upgrade. * Package name space changed to 'org.apache.hc.core5' * Maven group id changed to 'org.apache.httpcomponents.core5' HttpCore 5.0 releases can be co-located with earlier versions. Please note that as of 5.0 HttpCore requires Java 1.7 or newer. !!!IMPORTANT!!! We have been considering upgrading minimal JRE level to 1.8 for all HttpCore 5.x artifacts. If you would like HttpCore to remain 1.7 compatible please do let us know by posting a message to dev@hc.apache. org Please note that at this point 5.0 APIs are considered API experimental and unstable and are expected to change in the coming releases without providing a migration path. Download - <http://hc.apache.org/downloads.cgi> Release notes - <http://www.apache.org/dist/httpcomponents/httpcore/REL EASE_NOTES-5.0.x.txt> HttpComponents site - <http://hc.apache.org/> About HttpComponents Core HttpCore is a set of HTTP/1.1 and HTTP/2 transport components that can be used to build custom client and server side HTTP services with a minimal footprint.