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From Oleg Kalnichevski <ol...@apache.org>
Subject [ANNOUNCEMENT] HttpComponents Core 5.0 beta9 (GA candidate) released
Date Mon, 07 Oct 2019 07:19:17 GMT
The Apache HttpComponents project is pleased to announce 5.0-beta9 (GA
candidate) release of HttpComponents Core. 

This BETA fixes a number of defects found since the last release,
improves behavior of the lax (concurrent) connection pools (special
thanks to Linton Miller), simplifies and improves input event handling
of SSL/TLS sessions and the HTTP/1.1 protocol event handler.

IMPORTANT: This release is expected to be the last BETA version. If no
major design flaws are found the actual 5.0 API will be frozen and the
next version will be promoted to GA.

Notable changes and features included in the 5.0 series:

* 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 9+
    ** TLS 1.2 security features

   Features out of scope for 5.0 release:

    ** 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.

* Redesigned I/O reactor APIs and improved NIO based reactor
implementation for a greater performance and scalability.

* Support for server side request filters for classic and asynchronous
server implementations. Request filters could be used to implement
cross-cutting protocol aspects such as the 'expect-continue'
handshaking and user authentication / authorization.

* Redesigned connection pool implementation with strict connection
limit guarantees. The connection pool is expected to have a better
performance under higher concurrency due to reduced global pool lock

* New connection pool implementation with lax connection limit
guarantees and better performance under higher concurrency due to
absence of a global pool lock.

* 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.

The 5.0 APIs are considered feature complete and are not expected to
undergo any major changes anymore. The focus of development is now
shifting to API polish, code stabilization and documentation

Download - <http://hc.apache.org/downloads.cgi>
Release notes - <http://www.apache.org/dist/httpcomponents/httpcore/REL
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

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