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Updated release notes for HttpClient 5.0-alpha2 release 

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1794202 13f79535-47bb-0310-9956-ffa450edef68
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Oleg Kalnichevski 2017-05-07 13:36:24 +00:00
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RELEASE_NOTES.txt
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Release 5.0-ALPHA2
-------------------
This is a major release that introduces support for HTTP/2 protocol and event driven
messaging APIs consistent for all supported HTTP protocol versions.
HttpClient ships with two client implementations:
* Classic: it is based on the classic (blocking) I/O model; largely compatible
with the 4.x APIs; supports HTTP/1.1 only.
* Async: based on NIO model; new event driven APIs consistent for all supported
HTTP protocol versions; supports both HTTP/1.1 and HTTP/2.
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
** message trailers
** expect-continue handshake
** connection validation (ping)
** application-layer protocol negotiation (ALPN) on Java 1.9+
** TLS 1.2 security features
* Improved conformance to requirements and recommendations of the latest HTTP/1.1 protocol
specification (RFC 7230, RFC 7231)
* Redesigned connection pool implementation with reduced pool lock contention.
* Package name space changed to 'org.apache.hc.client5'
* Maven group id changed to 'org.apache.httpcomponents.client5'
* Apache Log4j2 logging APIs used for internal logging instead of Commons Logging APIs
Fetures presently that are presently NOT supported:
* HTTP/2 transport (classic)
* HTTP tunneling (async)
* Automatic response content decompression (async)
* Caching (async)
HttpClient 5.0 releases can be co-located with earlier versions.
Please note that as of 5.0 HttpClient requires Java 1.7 or newer.
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.
Changelog:
-------------------
@ -10,21 +70,37 @@ Changelog:
* [HTTPCLIENT-1715] NTLMEngineImpl.Type1Message not thread safe but declared as a constant.
Contributed by Olivier Lafontaine <olafontaine at gmail.com>, Gary Gregory <ggregory at apache.org>
* [HTTPCLIENT-1716] redirect handling of unsafe methods defined by RFC 7231.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-1717] Make fluent API .Content.Content(byte[], ContentType) public.
Contributed by Cash Costello <cash.costello at gmail.com>
* [HTTPCLIENT-1730] added #setValidateAfterInactivity to HttpClientBuilder.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-1752] Allow to configure the OSGI clients with relaxed SSL checks.
Contributed by Simone Tripodi <simonetripodi at apache.org>
* [HTTPCLIENT-1748] Improved compatibility with system authentication API in applets.
Contributed by Sebastien Caille <sebastien.caille at gmail.com>
* [HTTPCLIENT-1786] Port from Apache Commons Logging to Apache Log4j 2.
Contributed by Gary Gregory <ggregory at apache.org>
* [HTTPCLIENT-1817] Add a "Trust All" TrustStrategy implementation.
Contributed by Gary Gregory <ggregory at apache.org>
* [HTTPCLIENT-1817] Add a "Trust All" TrustStrategy implementation.
Contributed by Gary Gregory <ggregory at apache.org>
* [HTTPCLIENT-1836] DefaultHostnameVerifier#getSubjectAltNames(X509Certificate) throws java.lang.ClassCastException.
* [HTTPCLIENT-1836] DefaultHostnameVerifier#getSubjectAltNames(X509Certificate) throws
java.lang.ClassCastException.
Contributed by Gary Gregory <ggregory at apache.org>, Ilian Iliev <ilian_iliev at yahoo.com>
* [HTTPCLIENT-1691] HttpClient instance used internally by HC Fluent to take system properties into
account by default.
Contributed by Oleg Kalnichevski <olegk at apache.org>
Release 5.0-ALPHA1
-------------------