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Posted to commits@hc.apache.org by ol...@apache.org on 2021/09/26 20:45:50 UTC
svn commit: r50084 [2/3] - /dev/httpcomponents/httpcore-5.1.2-RC1/
Added: dev/httpcomponents/httpcore-5.1.2-RC1/RELEASE_NOTES-5.1.x.txt
==============================================================================
--- dev/httpcomponents/httpcore-5.1.2-RC1/RELEASE_NOTES-5.1.x.txt (added)
+++ dev/httpcomponents/httpcore-5.1.2-RC1/RELEASE_NOTES-5.1.x.txt Sun Sep 26 20:45:50 2021
@@ -0,0 +1,3100 @@
+Release 5.1.2
+------------------
+
+This is a maintenance release that corrects a number of defects discovered since release 5.1.1
+including defects in handling of identity transfer encoded HTTP/1.1 response messages.
+
+Change Log
+-------------------
+
+* HTTPCLIENT-2174: URIBuilder to return a new empty list instead of unmodifiable
+ Collections#emptyList.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-684: Async SSL I/O session fails to propagate end-of-stream events to the protocol
+ handler. This can cause a failure in handling of identity transfer encoded HTTP/1.1 response
+ messages.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: Async HTTP/1.1 server side protocol handler fails to correctly terminate message
+ exchanges with identity transfer encoded responses.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-683: Fixed incorrect recovery from hostname resolution failures by the I/O session
+ pool.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Don't Change connection flow control window based on remote SETTINGS.
+ Contributed by Ryan Schmitt <ryansch at amazon.com>
+
+
+
+Release 5.1.1
+------------------
+
+This is a maintenance release that corrects a number of defects discovered since release 5.1
+including a major defect that can cause a connection pool resource leak.
+
+
+Change Log
+-------------------
+
+* HTTPCORE-676: Fixed incorrect handling of TLS renegotiation by non-blocking i/o sessions.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-616: Make URI authority parsing IPv6 ready.
+ Contributed by Carter Kozak <ckozak at apache.org>
+
+* Improved parsing and formatting of URI components.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-673: Fixed incorrect handling of unknown parameters in HTTP/2 SETTINGS frame.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-671: URIBuilder does not precent-encode bracketed IPv6 addresses.
+ Contributed by Carter Kozak <ckozak at apache.org>
+
+* HTTPCORE-672: H2ConnPool incorrectly handles validation of closed sessions.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Fixed race condition when a connection request completes successfully and times out
+ at the same time causing a pool entry leak.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Fixed TextUtils#toHexString producing incorrect result for negative values.
+ Contributed by Marcono1234 <Marcono1234 at users.noreply.github.com>
+
+
+Release 5.1
+-----------
+
+This is the first GA release in the 5.1 release series.
+
+Notable changes and features included in the 5.1 series:
+
+* Conditional conformance with RFC 3986 (Uniform Resource Identifier (URI): Generic Syntax).
+
+* Improved support for out of sequence response message handing by the the classic (blocking)
+ HTTP transport.
+
+* Improved message builders.
+
+
+Change Log
+-------------------
+
+* Bug fix: HTTP negotiator factories to accept null TlsStrategy.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* RequestHandlerRegistry to resolve 127.0.0.1 as primary host.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-667, HTTPCORE-668, HTTPCORE-670: Added content type and HTTP header constants.
+ Contributed by Arturo Bernal <arturobernalg at gmail.com>
+
+* RFC 3986 conformance: BasicHttpRequest to reject requests whose path component begins with
+ multiple slashes.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* RFC 3986 conformance: BasicHttpRequest to support parsing of valid URI authority components
+ not recognized by java.net.URI.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Improved message builder support.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-666, regression: fixed NPE in ServerHttp1IOEventHandlerFactory.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+Release 5.1 BETA3
+------------------
+
+This is likely the last BETA release in the 5.1 release series. The next release is
+expected to be 5.1 GA. This beta includes a number of new features as well as
+bug fixes from the stable 5.0.x branch.
+
+Notable changes and features included in the 5.1 series:
+
+* Conditional conformance with RFC 3986 (Uniform Resource Identifier (URI): Generic Syntax).
+
+* Improved support for out of sequence response message handing by the the classic (blocking)
+ HTTP transport.
+
+
+Change Log
+-------------------
+
+* RFC 3986 conformance: Added `#normalizeSyntax` method to URIBuilder.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-663: Added http status code 425.
+ Contributed by Arturo Bernal <arturobernalg at gmail.com>
+
+* HTTPCORE-661: Added http status code 426.
+ Contributed by Arturo Bernal <arturobernalg at gmail.com>
+
+* HTTPCORE-659: Fixed race condition in IOSessionImpl when setting event.
+ Contributed by Nicolas Capponi <nicolas.capponi at forgerock.com>
+
+* HTTPCORE-658: Removed explicit inbound / outbound socket shutdown from
+ the `#close` method of classic HTTP connections.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-657: Added TrafficClass to IOReactorConfig (#243).
+ Contributed by Desmond Yeung <dyeung at datto.com>
+
+* Add filters before MAIN_HANDLER so they won't be ignored (#236).
+ Contributed by Rob Spoor <robtimus at users.noreply.github.com>
+
+* Bug fix: Fixed broken result callback in ProtocolNegotiatorBase.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Fixed NPE and improve code centralization in URIBuilder (#235).
+ Contributed by Lars Helge Ãverland <lars at dhis2.org>
+
+* Added `#appendPath` and `#appendPathSegments` methods to URIBuilder (#234).
+ Contributed by Lars Helge Ãverland <lars at dhis2.org>
+
+* Removed connection acceptor API changes (moved to 5.2).
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Removed protocol upgrade API changes (moved to 5.2).
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: Do not attempt to shut down non-blocking TLS session gracefully
+ in case the TLS handshake has not been fully completed.
+ Contributed by Oleg Kalnichevski <ol...@apache.org>
+
+
+Release 5.1 BETA2
+------------------
+
+This is the second BETA release in the 5.1 release series that includes a number of
+new features as well as bug fixes from the stable 5.0.x branch.
+
+Notable changes and features included in the 5.1 series:
+
+* Application protocol upgrade support for non-blocking HTTP/1.1 connections.
+
+Change Log
+-------------------
+
+* PR #232: Master try w res and more.
+ - Use try-with-resources.
+ - Use diamonds.
+ - Add missing @Override.
+ - Make better use of Map APIs.
+ - Remove redundant modifiers.
+ - Use Collections.addAll() API instead of loops.
+ - Remote extra semicolons (;).
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+* Bug fix: Fixed ignoring maxResultLength in toString method of EntityUtils.
+ Contributed by Klaw <Klawrar at gmail.com>
+
+* Bug fix: corrected handling of pushed stream refusal by the HTTP/2 protocol handler.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Improved connection re-use (keep-alive) tracking by the benchmark; disabled H2 push
+ when running the benchmark with HTTP/2.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Improved detection of disconnected endpoints by HttpAsyncRequester.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-626: in case of an unsuccessful `expect-continue` handshake do not make any
+ attempts to keep the client connection in a consistent state if the server intends
+ to close it on its end.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Move decision if the i/o session is to be terminated immediately to the protocol
+ handler by default attempt to terminate the i/o session gracefully.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Optimized request termination by the non-blocking HTTP/1.1 protocol handler in case of
+ a premature response or `expect-continue` handshake failure.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* `AbstractAsyncResponseConsumer` to handle gracefully an inconsistent state caused by
+ the caller signalling a response with no entity but subsequently calling methods
+ to consume data.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Revised HTTP protocol negotiation for non-blocking I/O sessions
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Revised TLS session initialization in I/O reactor code
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-653: CancelledKeyException triggers I/O reactor shutdown.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Make `ReactiveDataConsumer#failed` a no-op if it has already been marked as complete
+ (#227).
+ Contributed by Colin Weld <c_weld at backblaze.com>
+
+* HTTPCORE-644: non-blocking TLSv1.3 connections can end up in an infinite event spin
+ when closed concurrently by the local and the remote endpoints.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Calculate pendingOutputRequests before calling produceOutput to avoid race condition.
+ Contributed by Colin Weld <c_weld at backblaze.com>
+
+
+Release 5.1 BETA1
+------------------
+
+This is the first BETA release in the 5.1 release series that includes a number of
+new features as well performance optimizations in the classic HTTP transport.
+
+Notable changes and features included in the 5.1 series:
+
+* Conditional conformance with RFC 3986 (Uniform Resource Identifier (URI): Generic Syntax).
+
+* Improved support for out of sequence response message handing by the the classic (blocking)
+ HTTP transport.
+
+
+Change Log
+-------------------
+
+* HTTPCORE-649: Implement ByteArrayBuffer.append(ByteBuffer)
+ Contributed by Carter Kozak <ckozak at apache.org>
+
+* Use decimal numbers for endpoint/execution IDs
+ Contributed by Michael Osipov <michaelo at apache.org>
+
+* HTTPCORE-645: Increase blocking default chunk size from 2 KiB to 8 KiB.
+ Contributed by Carter Kozak <ckozak at apache.org>
+
+* HTTPCORE-645: Chunked request streams reuse buffers between requests.
+ Contributed by Carter Kozak <ckozak at apache.org>
+
+* HTTPCORE-639: Add a configurable ResponseOutOfOrder strategy for DefaultBHttpClientConnection.
+ Contributed by Carter Kozak <ckozak at apache.org>
+
+* RFC 3986 conformance: Support percent-encoded reserved characters in the host component.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* RFC 3986 conformance: Revised URI parsing and formatting.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Better parse and format methods for URIAuthority.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-628: Do not encode blanks as + in URI query component.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Async connection listeners to support passing attachments to endpoints.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+
+Release 5.0.2
+------------------
+
+This release reverts changes to early response handling logic introduced in 5.0.1
+and fixes a number of minor defects. Improvement of the early response handling
+by the classic client protocol handler has been moved to 5.1.
+
+Please also note that as of this release HttpCore will use a 3 minute socket timeout
+by default.
+
+Change Log
+-------------------
+
+* HTTP/1.1 protocol handlers fail to consistently set actual protocol version in
+ the execution context.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-648: Buffer array access respects the arrayOffset (#220).
+ Contributed by Carter Kozak <ckozak at ckozak.net>
+
+* HTTPCORE-646: ChunkedInputStream avoids creating unnecessary buffers.
+ Contributed by Carter Kozak <ckozak at ckozak.net>
+
+* Revert "Improved handling of early response messages by the classic client protocol handler".
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-638: SharedOutputBuffer must trigger DataStreamChannel#endStream() once (#204).
+ Contributed by malaysf <malayshah at gmail.com>
+
+* Fixed integer overflow in IOWorkers selector (#203).
+ Contributed by Pavel kaplin <pa...@gmail.com>
+
+* HTTPCLIENT-2098: EntityUtils#toByteArray method fails to take into account
+ `maxResultLength` parameter (#202).
+ Contributed by Andriy <a.mahats at gmail.com>
+
+* Add Automatic-Module-Name to the manifest.
+ Contributed by Niels Basjes <niels at basjes.nl>
+
+* HTTPCORE-636: Logging statements use slf4j interpolation over concatenation (#199).
+ Contributed by Carter Kozak <ckozak at ckozak.net>
+
+* HTTPCLIENT-2091: Use finite (3 minutes) socket timeout by default.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+
+Release 5.0.1
+------------------
+
+This release improves handling of early response messages by the classic client protocol handler
+and fixes a number of minor defects.
+
+Change Log
+-------------------
+
+* Add handling of early response messages by the classic client protocol handler.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-631: Revised i/o reactor shutdown sequence and resource de-allocation.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Fix CharArrayBuffer.subSequence(beganIndex,endIndex) to return right result.
+ Contributed by Lee Ray <liruigo at gmail.com>
+
+* Added exception callback to async server implementations enabling logging of unexpected and
+ fatal exceptions in the server side protocol handlers.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+Release 5.0
+------------------
+
+This is the first stable (GA) release of HttpCore 5.0.
+
+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.
+
+* Support for Reactive Streams API [http://www.reactive-streams.org/]
+
+* 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 contention.
+
+* 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.
+
+
+Change Log
+-------------------
+
+* GitHub #183: IO reactor status equality clean ups.
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+* HTTPCORE-623 GitHub #185: Change org.apache.hc.core5.http.io.BHttpConnection.isDataAvailable() int input to Timeout.
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+* GitHub #188: Add PathEntity, a Path based implementation of HttpEntity. (#188)
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+* GitHub #191: Add org.apache.hc.core5.http.Method.normalizedValueOf(String).
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+* GitHub #193: Reuse constants instead of magic strings.
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+
+Release 5.0-BETA11
+------------------
+
+This BETA improves handling of illegal or invalid requests on the server-side and fixes a number
+of defects in HTTP/2 protocol code found since the last release.
+
+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.
+
+
+Change Log
+-------------------
+
+* HTTPCORE-618: org.apache.hc.core5.http.HttpStatus should be a class, not an interface.
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+* HTTPCORE-619: org.apache.hc.core5.reactor.EventMask should be a class, not an interface.
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+* Normalize TimeUnit in TimeValue's #equals() and #hashCode().
+ Contributed by Michael Osipov <michaelo at apache.org>
+
+* Support for status code 431 (Request Header Fields Too Large) by H2 server-side protocol handler
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Enforce H2 SETTINGS_MAX_HEADER_LIST_SIZE limit for HTTP/2 messages.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Improved H2 connection window management logic.
+ Contributed by Ryan Schmitt <rschmitt at apache.org>
+
+* Use UTF-8 encoding for XML-based content types.
+ Contributed by Michael Osipov <michaelo at apache.org>
+
+* Bug-fix: H2 protocol handler to reset all streams unconditionally in case of an unexpected
+ exception and attempt to close the i/o session gracefully if possible.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Support for status code 431 (Request Header Fields Too Large).
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Corrected handling of illegal or invalid request heads by async server-side protocol handler
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug-fix: Fixed race condition in ReactiveDataConsumer.
+ Contributed by Ryan Schmitt <rschmitt at apache.org>
+
+* Bug-fix: Fixed H2 SETTINGS_HEADER_TABLE_SIZE negotiation.
+ Contributed by Ryan Schmitt <rschmitt at apache.org>
+
+* Bug-fix: Fixed empty response handling in ReactiveResponseConsumer.
+ Contributed by Ryan Schmitt <rschmitt at apache.org>
+
+* Allow for timeout while acquiring lock in StrictConnPool.
+ Contributed by Chris Wildman <chriswildman at chriswildman.com>
+
+* Added H2 config option to disable Huffman compression
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-613: Now allowing 0 for validaterAfterInactivity.
+ Contributed by Peter Frank <IMATOOL13 at gmail.com>
+
+* HTTPCLIENT-2029: URIBuilder to support parsing of non-UTF8 URIs.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCLIENT-2026: Fixed URIBuilder#isOpaque() logic.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-611: Minor glitches with TimeValue.
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+
+
+Release 5.0-BETA10
+-------------------
+
+This BETA fixes a number of defects found since the last release.
+
+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.
+
+
+Change Log
+-------------------
+
+* HTTPCORE-608: Fixes regression that can lead to performance degradation of
+ asynchronous HTTP/1.1 protocol handlers.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-606: HTTP/2 protocol handler incorrectly uses larger frame size prior
+ to SETTING handshake completion; revision of SETTINGS handshake implementation.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: HTTP/2 Protocol handler does not update global connection output window
+ in some cases.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Upgraded Conscrypt dependency to version 2.2.1
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+
+Release 5.0-BETA9
+-------------------
+
+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.
+
+Please note that the following interfaces have marked as internal as of this release:
+IOSession, IOEventHandler, IOEventHandlerFactory.
+
+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.
+
+
+Change Log
+-------------------
+
+* HTTPCORE-604: async HTTP/1.1 protocol handler must close the i/o session if it cannot
+ be kept alive before passing control to the message exchange hanlder.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Simplification of HTTP/1.1 read event handling logic.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Redesign of SSL/TLS async I/O event handling.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCLIENT-2016 (regression): Tab chars are replaced by question marks in header values.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: Fixed capacity calculation in SessionInputBufferImpl#put.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Marked IOSession, IOEventHandler and IOEventHandlerFactory interfaces as internal.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Propagate BasicResponse{Consumer,Producer}#failed() to data{Consumer,Producer}.
+ Contributed by Roy Hashimoto <roy at shoestringresearch.com>
+
+* Regression: Fixed regression in SingleCoreIOReactor leading to unhandled CancelledKeyException
+ and causing abnormal I/O reactor termination.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-601: Work-around for SSL session spin on outbound session closure with Conscrypt 2.2.1.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-600: SSLIOSession incorrectly disables input interest when there is still decrypted data
+ available in the session input buffer.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Added statusClass property to StatusLine.
+ Contributed by Behrang <18451+behrangsa at users.noreply.github.com>
+
+* HTTPCORE-596: Connection pools to use an optional callback to close out disposed connections.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Connection pools to close connections gracefully in case of an ordinary connection disposal.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-599: I/O sessions to stop reading from the underlying network channel of READ interest
+ is disabled.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* TimeValue to implement Comparable.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-597: AsyncEntityProducers#createText always throws IllegalArgumentException.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-595: Tolerate NPE thrown by com.android.org.conscrypt.NativeCrypto#SSL_get_shutdown
+ in Android Conscrypt.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Set accessibility flag on reflected methods in ReflectionUtils.
+ Contributed by Richard Hernandez <riher at amazon.com>
+
+* Restore original socket timeout after finishing SSL/TLS handshake.
+ Contributed by Richard Hernandez <riher at amazon.com>
+
+* Add SOAP XML content type.
+ Contributed by Raihaan Shouhell <raihaanhimself at gmail.com>
+
+* HTTPCORE-593, HTTPCORE-592, HTTPCORE-590, HTTPCORE-589: LaxConnPool improvements.
+ Contributed by Linton Miller <linton.miller at coxautoinc.com>
+
+* HTTPCORE-588: Race condition in ComplexCancellable that can lead to operational dependency
+ not being correctly cancelled.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Execute Socket[Channel]#connect under doPrivileged.
+ Contributed by Simon Willnauer <simonw at apache.org>
+
+* Fail request execution immediately after submission if the I/O session has already been closed.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: Fixed regression in the HTTP protocol negotiators.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: MessageSupport#formatTokens no longer modifies the array of tokens passed to it
+ as a parameter.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-586: Improve LaxConnPool max pool size management.
+ Contributed by Linton Miller <linton.miller at coxautoinc.com>
+
+* HTTPCORE-585: Fix LaxConnPool#servicePendingRequest to avoid losing pending lease requests
+ it can't fulfill.
+ Contributed by Linton Miller <linton.miller at coxautoinc.com>
+
+* Possible fix for iteration thread-safety issue.
+ Contributed by Linton Miller <linton.miller at coxautoinc.com>
+
+* SSL session verifier for classic HTTP requester.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: non-blocking I/O event handler may be null in case of an unexpected exception.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: Corrected immediate termination of non-blocking I/O sessions.
+Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: Ensure consistency of internal buffers in case of I/O or SSL exception.
+Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+
+Release 5.0-BETA8
+-------------------
+
+This BETA fixes a number of defects found since the last release and adds several
+convenience factory and builder classes, mainly for TLS configuration and HTTP
+message construction.
+
+As of this version all server and requester implementations exclude weak TLS protocol
+versions and ciphers.
+
+Please note that the following interfaces have changed: ResponseChannel,
+AsyncRequestConsumer, AsyncResponseConsumer, HttpContentProducer, SSLServerSetupHandler.
+
+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.
+
+
+Change Log
+-------------------
+
+* HTTPCORE-582: Fixed NPE in SingleCoreIOReactor#processEvents
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Redesign of fatal exception handling by the I/O reactors
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-581: Wrong deadline calculation for non-blocking I/O operations
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Better HttpVersion and ProtocolVersion. (#131)
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+* Classic and async message builders.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Improved classic and async entity factory methods.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-578: Incorrect serialization of HeaderGroup.
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+* HTTPCORE-577: server-side HTTP protocol negotiator to propagate exceptions
+ to the I/O event handler associated with the I/O session.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCLIENT-1986: URIBuilder#isPathEmpty method to verify if encodedPath
+ is an empty string.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* SSLIOSession: Improve connectTimeout implementation.
+ Contributed by Ryan Schmitt <rschmitt at apache.org>
+
+* HTTPCLIENT-1981: Disallow TRACE requests with an enclosed entity.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCLIENT-1978: Filter characters before byte conversion.
+ Contributed by Ryan Schmitt <rschmitt at apache.org>
+
+* HTTPCORE-573: FileContentDecoder don't always enforce the maximum number of
+ bytes to transfer.
+ Contributed by Julien Coloos <julien.coloos at gmail.com>
+
+* All server and requester implementation to exclude weak TLS protocol versions
+ and ciphers.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Improved SSL setup handling for classic requester and server.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Common TLS support methods migrated from HttpClient.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: non-blocking SSL I/O sessions fail to fire session disconnected event.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: basic entity consumers to clear buffered content when releasing resources.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* conscrypt-openjdk-uber 1.4.1 -> 1.4.2.
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+* Provide more information when a BindException occurs.
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+* Refactor ClassicHttpRequest and ClassicHttpResponse interfaces to extend
+ a new interface HttpEntityContainer.
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+* Update RxJava from 2.2.7 to 2.2.8.
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+
+Release 5.0-BETA7
+-------------------
+
+This BETA release adds support for SOCKS version 5, improves support for TLS
+handshake timeout configuration, improves URI builder, and fixes various defects.
+
+Please note that the following interfaces have changed: TlsStrategy, IOSession,
+TransportSecurityLayer.
+
+
+Change Log
+-------------------
+
+* Add a thread-safe capacity channel to AbstractHttp1StreamDuplexer
+ Contributed by Richard Hernandez <riher at amazon.com>
+
+* HTTPCORE-568: Signal capacity in ReactiveDataConsumer whenever possible (fixes a race condition)
+ Contributed by Richard Hernandez <riher at amazon.com>
+
+* Made standard HttpEntity implementations immutable / conditionally immutable
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCLIENT-1968: URIBuilder to split path component into path segments when digesting a URI
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCLIENT-1968: added utility methods to parse and format URI path segments
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Added SOCKS proxy support to classic (blocking) HTTP requester
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Made AbstractBinAsyncEntityProducer and AbstractCharAsyncEntityProducer conditionally threading-safe
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Added convenience method to test if ContentType instances are of the same MIME type
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Merge connect and handshake timeouts in AbstractIOSessionPool
+ Contributed by Ryan Schmitt <rschmitt at apache.org>
+
+* HTTPCLIENT-1960: URIBuilder incorrect handling of multiple leading slashes in path component
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCLIENT-1959: corrected argument validation in HttpHost constructors; removed deprecated methods
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* org.apache.hc.core5.reactor.IOSession: Deprecate lock() in favor of getLock(). Add missing @Override.
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+* HTTPCORE-563: client support for SOCKS version 5
+ Contributed by David Maplesden <david at maplesden.co.nz>
+
+* Delay I/O operations on non-blocking SSL sessions until fully initialized
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Add `handshakeTimeout` support throughout
+ Contributed by Ryan Schmitt <rschmitt at apache.org>
+
+* Updated the set of project report generated by Maven
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* SSLIOSession: Add `connectTimeout` constructor param
+ Contributed by Ryan Schmitt <rschmitt at apache.org>
+
+* Update RxJava from 2.1.9 to 2.2.7.
+ Contributed by Gary Gregory <garydgregory at gmail.com>
+
+
+Release 5.0-BETA6
+-------------------
+
+This BETA release adds support for advanced TLS functions (such as ALPN protocol negotiation)
+on Java 1.7 and Java 1.8 through Conscrypt TLS library, and fixes a number of defects found
+since the previous release.
+
+Please note AsyncDataConsumer interface has been changed in order to make it simpler to implement.
+However existing AsyncDataConsumer might require minor modifications.
+
+
+Change Log
+-------------------
+
+* Removed OSGi module.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Added support for advanced TLS functions (such as ALPN extension) on Java 1.7 and Java 1.8
+ through Conscrypt TLS library.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTP/1.1 and HTTP/2 async protocol handlers to use I/O session lock for output synchronization.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: non-blocking HTTP/1.1 server-side streams incorrectly report their keep-alive status.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: fixed a race condition in non-blocking HTTP/1.1 protocol handlers causing premature
+ clearing of output interest.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Simplified AsyncDataConsumer interface contract
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-560: Fix LaxConnPool leasing incorrect PoolEntry when processing pending requests
+ Contributed by Desmond Yeung <dyeung at datto.com>
+
+* Deprecate and rename org.apache.hc.core5.util.Timeout.ofMillis(long) to ofMilliseconds(long).
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Deprecate and rename org.apache.hc.core5.util.TimeValue.ofMillis(long) to ofMilliseconds(long).
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Fix org.apache.hc.core5.util.TimeValue.convert(TimeUnit).
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Add org.apache.hc.core5.util.TimeValue.divide(*).
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* org.apache.hc.core5.http.URIScheme.getId()
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-562: The reason phrase returned by org.apache.hc.core5.http.HttpResponse.getReasonPhrase()
+ may be empty.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* TimeValue can parse more leniently: Allow spaces and singular words for time units,
+ for example " 1 SECOND ".
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Add HttpStreamResetException.serialVersionUID
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Add org.apache.hc.core5.http.HttpRequest.setUri(URI)
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* org.apache.hc.core5.net.URIBuilder.setHttpHost(HttpHost)
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Deprecate constructors in org.apache.hc.core5.http.HttpHost that do not have the scheme argument
+ first in favor of new constructors that do.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Add org.apache.hc.core5.http.HttpHost.create(URI)
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Keep the entries in org.apache.hc.core5.http.protocol.UriPatternMatcher#map in insertion order.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+
+Release 5.0-BETA5
+-------------------
+
+This BETA release fixed a severe regression introduced in 5.0-BETA4.
+
+
+Release 5.0-BETA4
+-------------------
+
+This BETA release adds support for Reactive Streams API [http://www.reactive-streams.org/] and
+fixes compatibility issues with Java 11 new TLS engine as well as a number of defects found
+since the previous release.
+
+This release also includes a redesigned HTTP stress test tool loosely based on
+Apache Benchmark (AB) command interface with support for HTTP/2.
+
+
+Change Log
+-------------------
+
+* Resolved compatibility issues with TLS 1.3 engine shipped with Java 11
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: corrected handling of FORCE_HTTP2 version policy by the server-side protocol negotiator
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Redesign of the internal HTTP benchmark loosely based on AB, added support for HTTP/2
+ stress testing.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Regression: fixed the response connection control interceptor incorrectly using
+ 'Connection: keep-alive' directive with HTTP/1.0 requests that do not have
+ an explicit 'Connection' request header.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-552, HTTPCORE-553, HTTPCORE-554, HTTPCORE-555, HTTPCORE-556, HTTPCORE-557, HTTPCORE-558:
+ added status codes 103, 208, 226, 308, 451, 506, 508, 510
+ Contributed by sparsick <sparsic at @web.de> and Georg Berky <georg.berky at posteo.de>
+
+* HTTPCLIENT-1942: Add support for Reactive Streams
+ Contributed by Ryan Schmitt <ryansch at amazon.com>
+
+* Respect CloseMode when closing async TCP sockets
+ Contributed by Ryan Schmitt <ryansch at amazon.com>
+
+* Fix typo in message generated by org.apache.hc.core5.io.SocketTimeoutExceptionFactory.toMessage(int).
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Update the org.apache.hc.core5.http.protocol.HttpContext.setAttribute(String, Object) API to return the previous value.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Deprecate and rename org.apache.hc.core5.http.EndpointDetails.getSocketTimeout() to getSocketTimeoutMillis().
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Deprecate and rename org.apache.hc.core5.http.MessageHeaders.getAllHeaders() to getHeaders().
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Deprecate and rename org.apache.hc.core5.http.MessageHeaders.getSingleHeaders(String) to getHeader(String).
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+
+Release 5.0-BETA3
+-------------------
+
+This BETA release fixes a number of defects found since the previous release, adds several
+incremental improvements and improves Javadoc documentation.
+
+Change Log
+-------------------
+
+* Improved information responses (1xx) processing.
+ Contributed by Kirill Usov <kirill.usov at gmail.com>
+
+* Bug fix: fixed AbstractAsyncResponseConsumer to handle null callback parameter
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: HTTP stream handlers no longer call #failed event of the associated exchange handler when
+ the message exchange has already been completed.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: fixed NPE caused by null timeout attribute of IOSessionRequest
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: fixed incorrect propagation of exception cause in case of an HTTP protocol violation during
+ HTTP protocol version negotiation
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Workaround for misbehaved servers that return HTTP 204 responses with a content
+ Contributed by Alessandro Gherardi <alessandro.gherardi at schneider-electric.com>
+
+* HTTPCORE-510: Avoid an ArithmeticException in AbstractMultiworkerIOReactor by failing earlier by checking
+ ioThreadCount in IOReactorConfig constructor.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-511: Do not cache result of Runtime.getRuntime().availableProcessors() in IOReactorConfig.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-509: AVAIL_PROCS is auto-configured based on core count.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-514: Exceptions defined by HttpCore should clean message strings when built to replace non-printable
+ characters with hex values.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-517: Allow SecurityManager to stop socket connections.
+ Contributed by Gary Gregory <ggregory at apache.org> and Paul Thompson <pathompson at atlassian dot com>
+
+* HTTPCORE-537: org.apache.hc.core5.http.message.BasicHttpResponse.toString() prints its code twice and
+ no protocol version.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-539: Constructing a new FileEntityProducer for a file whose length is greater than 2GB throws
+ an IllegalArgumentException.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-540: EndpointDetails implements HttpConnectionMetrics.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-541: Add HttpVersion.ALL for all HTTP versions known to HttpCore.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-542: Add missing org.apache.hc.core5.http.message.BasicClassicHttpRequest.serialVersionUID
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-544: Add org.apache.hc.core5.http.EndpointDetails.getSocketTimeout()
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-545: Add org.apache.hc.core5.http.message.HeaderGroup.removeHeaders(Header)
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-546: Update org.apache.hc.core5.http.message.HeaderGroup.removeHeader(Header) to return a boolean
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-547: Update org.apache.hc.core5.http.message.HeaderGroup.removeHeaders(String) to return a boolean
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-548: Add missing HttpContext parameter to APIs.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Refactor duplicate messages into a new 0-arg constructor for StreamClosedException.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Refactor timeout APIs to include the actual timeout value.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Refactor timeout APIs to include the scale in the method name; for example 'int getSocketTimeout()'
+ vs. int 'getSocketTimeoutMillis()'.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-550: When a ParseException is caught and rethrown as an IOException in ChunkDecoder#processFooters(),
+ the IOException does not chain the original ParseException.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Request specific push consumers
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCLIENT-1927: URLEncodedUtils#parse breaks at double quotes when parsing unquoted values
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-528: SSL I/O session spins upon abnormal connection closure by the opposite endpoint.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+Release 5.0-BETA2
+-------------------
+
+This BETA release fixes a number of defects found since the previous release and
+adds several incremental improvements.
+
+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 contention.
+
+* 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 stabilisation
+and documentation improvements.
+
+
+Change Log
+-------------------
+
+* HTTP/2 multiplexed requester to support cancellation of individual message exchanges without termination
+ of the underlying I/O session.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: corrected handling of GOAWAY frames by HTTP/2 stream multiplexer
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: prevent a tight loop in non-blocking SSL I/O sessions due to a HTTP/2 frame fragment in the SSL
+ input buffer.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: incorrect handing of premature I/O session termination by the server-side application protocol
+ negotiator.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Strict / lax ALPN handshake mode for HTTP/2 multiplexing requester.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-496: Add API org.apache.http.protocol.UriPatternMatcher.entrySet().
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-499 Make interface Header extend NameValuePair
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-501 org.apache.http.client.utils.URLEncodedUtils.parse()
+ should return a new ArrayList when there are no query parameters.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+
+Release 5.0-BETA1
+-------------------
+
+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 new features in this release:
+
+* New HTTP/2 requester optimized for multiplexed execution of requests.
+
+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 contention.
+
+* 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 stabilisation
+and documentation improvements.
+
+
+Change Log
+-------------------
+
+* HTTP/2 multiplexing requester.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Compatibility with Java 9 (tested with Oracle JDK 9.0.1).
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Fixed handling of relative request paths in BasicHttpRequest.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-494: Add image constants to ContentType.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-486: set a time limit on processing of pending I/O events by I/O reactors.
+ Contributed by xiaohu-zhang <si...@126.com>
+
+
+
+Release 5.0-ALPHA4
+-------------------
+
+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:
+
+* 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
+
+ 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 contention.
+
+* 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.
+
+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.
+
+
+Change Log
+-------------------
+
+* HTTPCORE-485: Reduced memory footprint of non-blocking SSL sessions by 25%.
+ Contributed by Todor Bonchev <31352118+todorbonchev at users.noreply.github.com>
+
+* Fixed propagation of entity details of incoming HTTP/1.1 messages by non-blocking HTTP/1.1
+ stream duplexer
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Configurable connection pool concurrency policy
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-390: Connection pool implementation with higher concurrency characteristics
+ and lax total and per route max guarantees.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Request filters for classic and asynchronous server-side protocol handlers
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Improved handling of 1xx status messages by the classic transport; server expectation
+ (expect-continue) handshake can now be implemented as a cross-cutting aspect by both
+ the classic and asynchronous transports
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Fixed bug in the classic (blocking) HTTP requester causing incorrect release of connections
+ in case a response message has no entity (such as 204)
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-454: use Timeout class to represent timeout values
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Made HTTP/2 data window update precede sending of the DATA frame to the opposite endpoint.
+ In some extreme circumstances the opposite endpoint can send back a WINDOW_UPDATE frame
+ in-between of these two operation causing the data window value to exceed its maximum
+ valid value
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* I/O interest flag in IOSessionImpl requires synchronization instead of atomic operation
+ in order to avoid race condition
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-472: Fixed problem with blocking message parsers incorrectly throwing
+ "Maximum line length limit exceeded" exception in some corner cases
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Improved I/O reactor APIs with a smaller public API footprint
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Rewrite of I/O reactor internal channel management; more efficient handling of outgoing
+ connection requests
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Fixed delineation of 200 status message in response to CONNECT method
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-468: Allow HttpAsyncService subclasses to customize the HTTP status code.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-471: Add APIs URIBuilder.localhost() and setHost(InetAddress)
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-466: Round out the SslContextBuilder by adding missing APIs.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+
+
+Release 5.0-ALPHA3
+-------------------
+
+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.
+
+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.
+
+
+Change Log
+-------------------
+
+* Support for HTTP protocol version negotiation.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Support TLS ALPN and disable TLS renegotiation via reflection on Java 1.9+.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-452: Add a UriRegexMatcher.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-453: ServerBootstrap should traverse handler map in insertion order.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-451: Add a TimeValue class to wrap a long and a TimeUnit.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* Fixed HTTP/2 server-side response message delineation when replying to HEAD requests.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Rewrite of non-blocking HTTP/1.1 connection persistence and re-use code.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* API for graceful shutdown of processes or endpoints
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-450: Add a Provider parameter in SSLContextBuilder.
+ Contributed by lujianbo <387852424 at qq dot com>, Gary Gregory <ggregory at apache.org>
+
+* Improved handling of premature HTTP/1.1 stream termination by non-blocking
+ protocol handlers.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Non-blocking connection initializer to support multi-homed remote endpoints.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-458: Validate port values
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+
+Release 5.0-ALPHA2
+-------------------
+
+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 partial 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)
+ ** TLS 1.2 features
+
+ Unsupported features:
+
+ ** application-layer protocol negotiation (ALPN)
+ ** padding of outgoing frames
+ ** stream priority
+ ** plain connection HTTP/1.1 upgrade
+ ** CONNECT method
+ ** TLS renegotiation and compression cannot be disabled with Java 1.7 JSSE APIs
+
+* 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.
+
+* Support 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.
+
+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.
+
+
+Change Log
+-------------------
+
+* HTTPCORE-424: added ConnPool policy parameter to control connection re-use policy.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-413: Minimal chunk side can now be specified as H1Config#chunkSizeHint.
+ The value is treated as a hint. Both classic and NIO attempt to apply it when sending / receiving
+ messages without providing a strict guarantee.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-429: NIO connection pool incorrectly reports the number of pending connections
+ per individual route.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-432: HTTP/2 support.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-418: Add a HttpHost constructor for hostname and scheme.
+ Based on contribution by Joshua Hendrickson <joshua dot hendrickson at live dot com>
+
+* HTTPCORE-436: Port tests from Apache Commons Logging to Apache Log4j 2.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+* HTTPCORE-434: Corrected handling of HEAD responses without payload headers.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-427: SSL I/O sessions to use a finite timeout for SSL shutdown handshake when closing.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-422: HttpAsyncResponseConsumer#onEntityEnclosed is triggered for HEAD responses.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-420: Blocking HttpServer does not close out persistent connection when shut down.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-417: SSLIOSession#writePlain incorrectly handles closed channel condition leading
+ to an infinite loop.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-416: DefaultConnectingIOReactor to treat failure to open a channel for a new outgoing
+ connection as a recoverable request failure.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+Release 5.0-ALPHA1
+-------------------
+
+This is a major release that renders HttpCore API incompatible with the stable 4.x branch
+and upgrades HTTP/1.1 protocol conformance to the requirements and recommendations of the latest
+protocol specification. This release lays the foundation for transition to HTTP/2 as the primary
+transport protocol in the future releases.
+
+Notable changes and features included in the 5.0 series are:
+
+* Improved conformance to requirements and recommendations of the latest HTTP/1.1 protocol
+ specification (RFC 7230, RFC 7231)
+
+* Blocking I/O and NIO HTTP transport implementation has been folded into one module
+
+* 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.
+
+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.
+
+
+Change Log
+-------------------
+
+* PATCH method support
+ Contributed by Ãmer Ãzkan <omer at ozkan.info>
+
+* HTTPCORE-412: Support for trailing headers in outgoing HTTP messages
+ Based on contribution by Daneel Yaitskov <rtfm.rtfm.rtfm at gmail.com>
+
+* HTTPCORE-411, RFC 7320, RFC 7321: Made Expect-Continue handshake compliant with the spec
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Fixed handling of pipelined HEAD requests
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-409: NIO HttpServer does not shutdown listener ExecutorService
+ Contributed by Hiranya Jayathilaka <hiranya at apache.org>
+
+* HTTPCORE-406: PAX-EXAM tests with an embedded HTTP server
+ Contributed by Benson Margulies <benson at basistech.com>
+
+* RFC 7230: increased the default max number of concurrent connection for the same route from 2 to 5
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* RFC 7230: improved compliance of the default connection re-use strategy
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* RFC 7230: reject HTTP/1.1 requests with absent Host header or multiple Host headers
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* RFC 7230: permit some empty lines before message head
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* RFC 7230: disallow multiple Content-Length headers / header elements
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* RFC 7230: reject headers containing whitespaces between the header field name and colon in strict mode
+ (when parsing request messages on the server-side)
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* RFC 7230: reject messages with incompatible major protocol version
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTP/2: added immutable MessageHead interface common for both HTTP/1.1 and HTTP/2 messages
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-396: PrivateKeyStrategy does not work with NIO SSL
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* RFC 7230: it is legal for any request method to enclose an entity; revised message delineation logic;
+ removed HttpEntityEnclosingRequest interface; fixes HTTPCORE-318, HTTPCORE-380
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Use CharSequence instead of CharArrayBuffer for header element parsing
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* TokenParser to use CharSequence instead of CharArrayBuffer
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+
+
+Release 4.4.4
+-------------------
+
+This is a maintenance release that fixes a number of issues discovered since 4.4.3.
+
+Please note that as of 4.4 HttpCore requires Java 1.6 or newer.
+
+
+Change Log
+-------------------
+
+* [HTTPCORE-410] PoolStats made Serializable
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* BufferedHttpEntity to use HttpEntity#writeTo when buffering non-repeatable entities
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Fixed race condition in request initialization code in async client protocol handlers
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Fixed handling of pipelined HEAD requests
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-409] NIO HttpServer does not shutdown listener ExecutorService
+ Contributed by Hiranya Jayathilaka <hiranya at apache.org>
+
+
+Release 4.4.3
+-------------------
+
+This is a maintenance release that fixes a regression introduced by release 4.4.2.
+
+Please note that as of 4.4 HttpCore requires Java 1.6 or newer.
+
+
+Change Log
+-------------------
+
+* Fixed regression introduced by HTTPCORE-399.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+Release 4.4.2
+-------------------
+
+This maintenance release fixes a bug in HTTP request pipelining code discovered
+after 4.4.1 release.
+
+Please note that as of 4.4 HttpCore requires Java 1.6 or newer.
+
+
+Change Log
+-------------------
+
+* Throw ConnectionClosedException instead of IllegalStateException if an attempt is made to
+ use a closed (not bound to a socket) blocking connection.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-399] Non-blocking client connections incorrectly suspend output causing
+ sequential execution of requests.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+Release 4.4.1
+-------------------
+
+This maintenance release fixes a number of minor bugs found since 4.4.
+
+Please note that as of 4.4 HttpCore requires Java 1.6 or newer.
+
+
+Change Log
+-------------------
+
+* [HTTPCORE-396]: PrivateKeyStrategy does not work with NIO SSL.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-395]: VersionInfo#getUserAgent reports incorrect Java version.
+ Contributed by Michael Osipov <michaelo at apache.org>
+
+* Non-blocking connection should not trigger end-of-stream callback as long as there is still
+ data in the session input buffer. This can cause a series of short pipelined requests to
+ fail prematurely in case of an unexpected connection termination by the opposite endpoint.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+Release 4.4
+-----------------
+
+This is the first stable (GA) release of HttpCore 4.4. Notable features included in
+the 4.4 series are:
+
+* Support for pipelined request processing on the server-side
+
+* Support for pipelined request execution on the client side
+
+* Simplified bootstrapping of blocking and non-blocking (NIO) HTTP server implementations
+
+* Inclusion of SSL context initialization utilities from HttpClient
+
+Please note that as of 4.4 HttpCore requires Java 1.6 or newer.
+
+
+Change Log
+-------------------
+
+* Performance optimizations
+ Contributed by Dmitry Potapov <dpotapov at yandex-team.ru>
+
+* Update Apache Commons Logging version from 1.1.3 to 1.2.
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+
+Release 4.4-BETA1
+-------------------
+
+This is the first BETA release from 4.4 release series. Notable features included in
+the 4.4 series are:
+
+* Support for pipelined request processing on the server-side
+
+* Support for pipelined request execution on the client side
+
+* Simplified bootstrapping of blocking and non-blocking (NIO) HTTP server implementations
+
+* Inclusion of SSL context initialization utilities from HttpClient
+
+* New HTTP element tokenizer implementation
+
+
+Please note that as of 4.4 HttpCore requires Java 1.6 or newer.
+
+
+
+
+Release 4.4-ALPHA1
+-------------------
+
+This is the first release from the 4.4.x development branch. The most notable features included in
+this release are:
+
+* Support for pipelined request processing on the server-side
+
+* Support for pipelined request execution on the client side
+
+* Simplified bootstrapping of blocking and non-blocking (NIO) HTTP server implementations
+
+This release also includes all fixes from the stable 4.2.x release branch.
+
+
+Change Log
+-------------------
+
+* [HTTPASYNC-77] system resources are not correctly deallocated if I/O reactor is shut down
+ while still inactive (not started)
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-377] Allow zero SO_LINGER (immediate abortive close).
+ Contributed by Dmitry Potapov <potapov.d at gmail.com>
+
+* [HTTPCORE-376] AbstractNIOConnPool#requestCancelled() should not process pending requests
+ wnen being shut down.
+ Contributed by Dmitry Potapov <potapov.d at gmail.com>
+
+* [HTTPASYNC-69]: async request handler is closed by HttpAsyncRequestExecutor#closed
+ if the underlying connection is found to be in an inconsistent state.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-372] Blocking and non-blocking chunk decoders to throw an I/O exception if data stream
+ is terminated without a closing chunk.
+ Contributed by Dmitry Potapov <potapov.d at gmail.com>
+
+* [HTTPCORE-368] Customizable buffer management strategies for SSLIOSession.
+ Contributed by offbynull <offbynull at gmail.com>
+
+* [HTTPCORE-358] Added I/O reactor listener backlog parameter.
+ Contributed by Dmitry Potapov <potapov.d at gmail.com>
+
+* [HTTPCORE-357] Avoid DNS lookups in SSLIOSession.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Update JUnit to version 4.11 from 4.9
+ Contributed by Gary Gregory <ggregory at apache.org>
+
+
+
+Release 4.3.2
+-------------------
+
+This maintenance release fixes a number of bugs and regressions found since 4.3.1, mostly in the
+NIO transport components. All users of HttpCore 4.3 are advised to upgrade.
+
+Change Log
+-------------------
+
+* [HTTPCORE-371] Support for SSL re-negotiation with NIO.
+ Contributed by Asankha Perera <asankha at apache.org>
+
+* [HTTPCORE-373] Out of sequence HTTP response causes NPE in HttpAsyncRequestExecutor.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-370] Race condition if connection request succeeds and times out at the same time.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* (Regression) Fixed synchronization issue in blocking and non-blocking connection pool
+ implementations caused by HTTPCORE-362
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+Release 4.3.1
+-------------------
+
+This maintenance release fixes a number of bugs and regressions found since 4.3, mostly in the
+NIO transport components. All users of HttpCore 4.3 are advised to upgrade.
+
+Change Log
+-------------------
+
+* [HTTPCORE-367] (Regression) Non-blocking connections can enter a tight loop while waiting
+ for a chunk header split across multiple TCP frames.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-366] Non-blocking SSLIOSession can enter an infinite loop if the underlying
+ channel receives incoming data simultaneously with inactivity timeout.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-364] IOSessionImpl.getLocalAddress() (etc.) creates unnecessary copy of channel
+
+* DefaultConnectingIOReactor / DefaultListeningIOReactor do not correctly apply some initial
+ socket settings.
+ Contributed by Andreas Veithen <veithen at apache.org>
+
+* [HTTPCORE-357] Avoid DNS lookups in SSLIOSessions in server mode.
+ Contributed by Isaac Cruz Ballesteros <icruzbal at gmail.com>
+
+* [HTTPCORE-362] Purge pool per route map after closing out expired or idle connections with
+ #closeExpired and #closeIdle methods.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-361] Reduced intermediate garbage in HeaderGroup#getFirstHeader()
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-355] HttpAsyncRequestExecutor fails when its handler is not ready to generate
+ a request.
+ Contributed by jd <j1234d2003 at yahoo.com>
+
+* [HTTPCORE-354] BasicConnFactory don't use SocketConfig#isSoKeepAlive.
+ Contributed by David Ignjic <ignjic at gmail.com>
+
+* [HTTPCORE-347] (Regression) HttpResponse#setStatusCode() does not update reason phrase.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+
+Release 4.3
+-------------------
+
+This is the first stable (GA) release of HttpCore 4.3. The most notable features in the 4.3
+branch are:
+
+* Deprecation of preference and configuration API based on HttpParams interface in favor of
+ constructor injection and plain configuration objects.
+
+* Reliance on object immutability instead of access synchronization for thread safety.
+ Several old classes whose instances can be shared by multiple request exchanges have
+ been replaced by immutable equivalents.
+
+The 4.3 branch also contains performance optimizations such as reduced TCP packet fragmentation
+and more efficient lease / release operations for pools of persistent connections on the client
+side.
+
+This release also includes all fixes from the 4.2.x release branch.
+
+Users of HttpCore 4.2 are encouraged to upgrade.
+
+
+Change Log
+-------------------
+
+* [HTTPCORE-343] AbstractNIOConnPool to fire request callbacks outside the pool lock.
+ This makes it possible to re-enter pool methods from a callback event.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-340] AbstractNIOConnPool to support lease timeout distinct from connect timeout.
+ Contributed by Ignat Alexeyenko <ignatalexeyenko at gmail.com>
+
+* Blocking connections do not clean session input buffer when closed (input data from a read
+ operation may still remain in the buffer if the connection is re-opened).
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+
+Release 4.2.5
+-------------------
+
+This maintenance release fixes a number of bugs found in NIO components since 4.2.4. We advise
+users of HttpCore NIO of all versions to upgrade.
+
+This is likely to be the last release in the 4.2.x branch.
+
+
+Change Log
+-------------------
+
+* [HTTPCORE-345] EntityAsyncContentProducer fails to release resources allocated by the underlying
+ entity when #produceContent is never invoked.
+ Contributed by Tad Whitenight <tadwhitenight at gmail.com>
+
+* Non-blocking connection pool to avoid scanning the entire queue of pending connection requests
+ on each connection lease / release operation (under heavy load the request queue can contain
+ a significant number of pending requests, a full linear scan of which can cause massive
+ performance degradation).
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Use bulk ByteBuffer#put method instead of single byte ByteBuffer#put
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-336] Unhandled CancelledKeyException leads to a shutdown of the underlying IOReactor.
+ Contributed by Thomas Dudek <mail.dudek at gmail.com>
+
+
+
+Release 4.3-BETA2
+-------------------
+
+This is the second BETA release from the 4.3.x release branch. This release addresses performance
+issues in the non-blocking connection pool implementation and also includes a number of performance
+improvements in the low level NIO based transport components.
+
+Change Log
+-------------------
+
+* [HTTPCORE-300] ContentType to provide support for custom parameters.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Non-blocking connection pool to avoid scanning the entire queue of pending connection requests
+ on each connection lease / release operation (under heavy load the request queue can contain
+ a significant number of pending requests, a full linear scan of which can cause massive
+ performance degradation).
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Basic connection pool implementations to perform default port resolution for HTTP and HTTPS
+ schemes.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Use bulk ByteBuffer#put method instead of single byte ByteBuffer#put
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-336] Unhandled CancelledKeyException leads to a shutdown of the underlying IOReactor.
+ Contributed by Thomas Dudek <mail.dudek at gmail.com>
+
+
+Release 4.3-BETA1
+-------------------
+
+This is the first BETA release from the 4.3.x release branch. The main theme of the 4.3 release
+series is streamlining of component configuration and deprecation of the old configuration
+API based on HttpParams in favor of constructor-based dependency injection and plain objects
+for configuration parameters.
+
+This release also includes performance optimizations intended to reduce TCP packet fragmentation
+when writing out HTTP messages both in blocking and non-blocking I/O modes, which should result
+in up to 20% higher throughput for short entity enclosing messages.
+
+This release also includes all fixes from the stable 4.2.x release branch.
+
+
+Change Log
+-------------------
+
+* Reduced TCP packet fragmentation when writing out message content with blocking and
+ non-blocking connections.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-330] Clarify InputStreamEntity length constructor argument.
+ Contributed by John McCarthy <jmsignup at gmail.com>
+
+* [HTTPCORE-323] Undocumented UnsupportedCharsetException in ContentType#getOrDefault.
+ Contributed by Gary D. Gregory <ggregory at apache.org>
+
+
+
+Release 4.2.4
+-------------------
+
+This maintenance release fixes a number of bugs found in NIO components since 4.2.3. We advise
+users of HttpCore NIO of all versions to upgrade.
+
+Change Log
+-------------------
+
+* [HTTPCORE-334] https request to a non-responsive but alive port over a non-blocking connection
+ results in a busy loop in one of I/O dispatch threads.
+ Contributed by Scott Stanton <snstanton at gmail.com>
+
+* [HTTPCORE-331] BasicFuture no longer executes notification callbacks inside a synchronized block.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-319] Non-blocking SSLIOSession can fail to shut down correctly when the underlying
+ connection gets terminated abnormally by the opposite endpoint in case there is a truncated or
+ corrupted encrypted content in the input buffer and there is still data in the output buffer
+ that needs to be flushed out (most likely to occur with POST or PUT requests).
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+
+Release 4.3-ALPHA1
+-------------------
+
+This is the first release from the 4.3.x release branch. The main focus of the 4.3 release
+series is streamlining of component configuration and deprecation of the old configuration
+API based on HttpParams in favor of constructor based dependency injection and plain objects
+for configuration parameters.
+
+We are kindly asking all upstream projects to review API changes and help us improve
+the APIs by providing feedback and sharing ideas on dev@hc.apache.org.
+
+This release also includes all fixes from the stable 4.2.x release branch.
+
+
+
+Release 4.2.3
+-------------------
+
+This maintenance release fixes a number of bugs and found since 4.2.2 including
+a major bug in the NIO module that can cause an infinite loop in SSL sessions under special
+circumstances when the remote peer terminates the session in the middle of SSL handshake.
+Please note this issue does not affect blocking I/O components used by HttpClient.
+
+We advise users of HttpCore NIO of all versions to upgrade.
+
+Change Log
+-------------------
+
+* [HTTPCORE-319, HTTPCORE-322] Non-blocking SSLIOSession can enter an infinite loop under
+ special circumstances when the remote peer terminates the session in the middle of SSL handshake.
+ Contributed by Paul Donohue <apache-jira at PaulSD.com> and
+ Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-316] HeaderGroup#clone removes headers from the original object.
+ Contributed by Markus Thies <markus at dr-thies.com>
+
+* [HTTPCORE-315] AbstractNIOConnPool fails to correctly deallocate connection if it is immediately
+ released from the session request callback causing a resource leak.
+ Contributed by Scott Stanton <snstanton at gmail.com>
+
+* [HTTPCORE-313] ContentType#parse now ignores empty and blank charset attributes.
+ HttpEntityUtils#toString now throws checked I/O exception if it encounters an unsupported
+ charset.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+Release 4.2.2
+-------------------
+
+This is a maintenance release that fixes a number of bugs and regressions found since 4.2.1
+including a major bug in the NIO module causing incorrect handling of outgoing Content-Length
+delimited messages larger than 2GB.
+
+Users of HttpCore 4.2 are advised to upgrade.
+
+Change Log
+-------------------
+
+* [HTTPCORE-312] NIO length delimited content encoder incorrectly handles messages larger than 2GB.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-310] Fixed regression in DefaultConnectionReuseStrategy causing it to incorrectly
+ flag connections as non-reusable after a 204, 205 or 304 response.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-309] Fixed regression in HttpAsyncRequestExecutor causing it to handle 204, 205
+ and 304 responses incorrectly by returning a message with an enclosed content body.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-306] I/O reactor TCP_NODELAY parameter now defaults to true.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPASYNC-21] request execution handler does not get closed in case of a premature HTTP
+ exchange termination.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-303] ContentType made Serializable.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+
+Release 4.2.1
+-------------------
+
+This is a maintenance release that fixes a non-critical number of bugs found since 4.2.
+Users of HttpCore 4.2 are encouraged to upgrade.
+
+Change Log
+-------------------
+
+* [HTTPCORE-299] ContentType should rely on Charset#name() instead of Charset#toString()
+ for building header value.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-263] Under rare circumstances incorrectly delineated or garbled HTTP message
+ can cause an IndexOutOfBoundsException in AbstractSessionInputBuffer#readLine()
+ Contributed by Michael Pujos <bubbleguuum at free.fr>
+
+* Made connection pools use FIFO algorithm instead of LIFO when leasing / releasing persistent
+ connections.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-298] Fixed non-blocking SSLIOSession state can getting out of sync with the underlying
+ IOSession in case the I/O session is terminated by the I/O reactor rather than by the protocol
+ handler.
+ Contributed by Sandeep Tamhankar <sandman at electric-cloud.com>
+
+* Fixed NPE in StringEntity constructor thrown if ContentType#getCharset is null.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+
+Release 4.2
+-------------------
+
+This is the first stable (GA) release of HttpCore 4.2. The most notable features included in this
+release are connection pool components for blocking and non-blocking HTTP connections and new
+asynchronous client and server-side protocol handlers.
+
+New protocol handling API used in conjunction with connection pooling components is expected to
+make development of asynchronous HTTP client agents and HTTP proxies easier and less error prone.
+
+Connection pool components are based on mature code migrated from HttpClient and HttpAsyncClient
+modules but have a slightly different API that makes a better use of Java standard concurrent
+primitives.
+
+Change Log
+-------------------
+
+* Fixed HttpAsyncRequestExecutor incorrect execution of message exchanges that span across multiple
+ hosts (for instance, in case of a request redirect).
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* AbstractHttpClientConnection#isResponseAvailable method now catches SocketTimeoutException
+ and returns false.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-296] server-side connections (both blocking and non-blocking) can now handle entity
+ enclosing requests without Content-Length and Transfer-Encoding headers.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-295] [HTTPCORE-288] Provided direct access to the underlying socket of non-blocking
+ HTTP connection to allow modification of socket level settings such as TCP_NODELAY, SO_KEEPALIVE,
+ TrafficClass, etc.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* [HTTPCORE-289] HttpAsyncService fails to invoke Cancellable#cancel() when the ongoing HTTP
+ exchange is aborted by the client.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+Incompatible changes
+--------------------
+[Compared to release version 4.1.4]
+
+The following methods have been deprecated for some time now and have been deleted:
+
+org.apache.http.impl.SocketHttpServerConnection#createHttpDataReceiver(Socket, int, HttpParams)
+org.apache.http.impl.SocketHttpServerConnection#createHttpDataTransmitter(Socket, int, HttpParams)
+org.apache.http.protocol.HttpRequestHandlerRegistry#matchUriRequestPattern(String, String)
+
+The following classes have been deprecated for some while now and have been deleted:
+
+org.apache.http.nio.entity.ByteArrayNIOEntity
+org.apache.http.nio.entity.FileNIOEntity
+org.apache.http.nio.entity.HttpNIOEntity
+org.apache.http.nio.entity.StringNIOEntity
+org.apache.http.nio.protocol.NHttpClientHandlerBase
+org.apache.http.nio.protocol.NHttpServiceHandlerBase
+
+Release 4.2-BETA1
+-------------------
+
+This is the first BETA release of HttpCore 4.2. This release comes with completely redesigned
+and rewritten asynchronous protocol handlers. New protocol handling API used in conjunction with
+connection pooling components is expected to make development of asynchronous HTTP client agents
+and HTTP proxies easier and less error prone.
+
+Sample application shipped with the release include an example of an HTTP file server capable of
+direct channel (zero copy) data transfer and an example of a non-blocking, fully streaming reverse
+proxy.
+
+This release also incorporates bug fixes from the stable 4.1.x branch and includes an updated
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