Java example source code file (RELEASE_NOTES.txt)
The RELEASE_NOTES.txt example source code
Release 4.0.3
-------------------
This is an emergency release fixing a critical regression in the SSL
connection management code. HttpClient 4.0.2 release included an improved
support for multihome hosts, which unfortunately had a bug causing the default
SSL hostname verification logic to fail. An attempt to establish an SSL
connection with HttpClient 4.0.2 can result in javax.net.ssl.SSLException:
"hostname in certificate didn't match ..." error.
Changelog
-------------------
* [HTTPCLIENT-996] An emergency fix for javax.net.ssl.SSLException:
"hostname in certificate didn't match ..." error.
Contributed by Oleg Kalnichevski <olegk at apache.org>
Release 4.0.2
-------------------
This is a maintenance release that fixes a number of bugs discovered since
the previous stable release. This is likely to be the last release from the
4.0.x branch.
Changelog
-------------------
* [HTTPCLIENT-951] Non-repeatable entity enclosing requests are not correctly
retried when 'expect-continue' handshake is active.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-953] IllegalStateException thrown by RouteSpecificPool.
Contributed by Guillaume <gueugaie at gmail.com>
* Work-around for HTTPCLIENT-948 (idle connection handling code can
leave closed connection in a inconsistent state)
Contributed by Oleg Kalnichevski <olegk at apache.org>
Release 4.0.1
-------------------
This is a bug fix release that addresses a number of issues discovered since
the previous stable release. None of the fixed bugs is considered critical.
Most notably this release eliminates eliminates dependency on JCIP annotations.
This release is also expected to improve performance by 5 to 10% due to
elimination of unnecessary Log object lookups by short-lived components.
Changelog
-------------------
* [HTTPCLIENT-895] Eliminated Log object lookups by short-lived components
impairing performance.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-885] URLEncodedUtils now correctly parses form-url-encoded
entities that specify a charset.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-884] UrlEncodedFormEntity now sets charset on the Content-Type
header.
Contributed by Jared Jacobs <jmjacobs at cs.stanford.edu>
* [HTTPCLIENT-883] SO_TIMEOUT is not reset on persistent (re-used) connections.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-882] Auth state is now correctly updated if a successful NTLM
authentication results in a redirect. This is a minor bug as HttpClient
manages to recover from the problem automatically.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-881] Fixed race condition in AbstractClientConnAdapter that makes
it possible for an aborted connection to be returned to the pool.
Contributed by Tim Boemker <tboemker at elynx.com> and
Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-866] Removed dependency on jcip-annotations.jar.
Contributed by Oleg Kalnichevski <olegk at apache.org>
and Sebastian Bazley <sebb at apache.org>
Release 4.0
-------------------
HttpClient 4.0 represents a complete, ground-up redesign and almost a complete
rewrite of the HttpClient 3.x codeline. This release finally addresses several
design flaws that existed since the 1.0 release and could not be fixed without
a major code overhaul and breaking API compatibility.
Architectural changes
---------------------
* Redesign of the HttpClient internals addressing all known major
architectural shortcomings of the 3.x codeline.
* Cleaner, more flexible and expressive API.
* More modular structure.
* Better performance and smaller memory footprint due to a more efficient HTTP
transport based on HttpCore.
* Implementation of cross-cutting HTTP protocol aspects through protocol
interceptors.
* Improved connection management, better handling of persistent connections,
support for stateful connections
* Pluggable redirect and authentication handlers.
* Improved support for sending requests via a proxy or a chain of proxies
* More flexible SSL context customization
* Reduced intermediate garbage in the process of generating HTTP requests
and parsing HTTP responses
Important notes
-------------------
* Future releases of HttpMime module may be binary incompatible with this
release due to possible API changes in Apache Mime4J. Apache Mime4J is
still being actively developed and its API is considered unstable.
* HttpClient 4.0 is not fully binary compatible with 4.0 BETA1 release.
Some protected variables in connection management class have been
made final in order to help ensure their thread safety:
org.apache.http.conn.BasicEofSensorWatcher#attemptReuse
org.apache.http.conn.BasicEofSensorWatcher#managedConn
org.apache.http.impl.conn.DefaultClientConnectionOperator#schemeRegistry
org.apache.http.impl.conn.DefaultHttpRoutePlanner#schemeRegistry
org.apache.http.impl.conn.ProxySelectorRoutePlanner#schemeRegistry
org.apache.http.impl.conn.SingleClientConnManager#alwaysShutDown
org.apache.http.impl.conn.SingleClientConnManager#connOperator
org.apache.http.impl.conn.SingleClientConnManager#schemeRegistry
org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager#connOperator
org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager#schemeRegistry
Bug fixes since 4.0 BETA2 release
-------------------
* [HTTPCLIENT-861] URIUtils#resolve is now compatible with all examples given
in RFC 3986.
Contributed by Johannes Koch <johannes.koch at fit.fraunhofer.de>
* [HTTPCLIENT-860] HttpClient no longer converts redirects of PUT/POST to GET
for status codes 301, 302, 307, as required by the HTTP spec.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-859] CookieIdentityComparator now takes path attribute into
consideration when comparing cookies.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* HttpClient will no longer send expired cookies back to the origin server.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-856] Proxy NTLM authentication no longer fails on a redirect to
a different host.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-841] Removed automatic connection release using garbage collection
due to a memory leak.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-853] Fixed bug causing invalid cookie origin port to be selected
when the target is accessed on the default port and the connection is
established via a proxy.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-852] Fixed bug causing automatically retried redirects fail with
CircularRedirectException.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* Fixed problem with the default HTTP response parser failing to handle garbage
preceding a valid HTTP response.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* NonRepeatableRequestExceptions now include the cause that the original
request failed.
Contributed by Sam Berlin <sberlin at apache.org>
* [HTTPCLIENT-837] Fixed problem with the wire log skipping zero byte values
if read one byte at a time.
Contributed by Kirill Safonov <ksafonov at swiftteams.com>
* [HTTPCLIENT-823] 'http.conn-manager.max-total' parameter can be adjusted
dynamically. However, the size of existing connection pools per route,
once allocated, will not be adjusted.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-822] Default socket factories to rethrow SocketTimeoutException
as ConnectTimeoutException in case of connect failure due to a time out.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-813] Fixed default port resolution. Invalid ports no longer
get replaced with the default port value.
Contributed by Oleg Kalnichevski <olegk at apache.org>
Release 4.0 beta 2
-------------------
BETA2 is a maintenance release, which addresses a number of issues
discovered since the previous release.
The only significant new feature is an addition of an OSGi compliant
bundle combining HttpClient and HttpMime jars.
All upstream projects are strongly encouraged to upgrade.
* Fixed NPE in DefaultRequestDirector thrown when retrying a failed
request over a proxied connection.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-803] Fixed bug in SSL host verifier implementations
causing the SSL certificate to be rejected as invalid if the connection
is established using an IP address.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-806] DefaultHttpMethodRetryHandler will no longer retry
on ConnectExceptions.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* DigestScheme can use an arbitrary digest algorithm requested by the
target server (such as SHA) as long as this algorithm is supported by
the Java runtime.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* Fixed parsing and validation of RFC2109 compliant Set-Cookie headers
by the Best-Match cookie spec.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* Fixed bug that can cause a managed connection to be returned from the
pool in an inconsistent state.
Contributed by Oleg Kalnichevski <olegk at apache.org>
4.0 Beta 1
-------------------
BETA1 release brings yet another round of API enhancements and
improvements in the area of connection management. Among the most notable
ones is the capability to handle stateful connections such as persistent
NTLM connections and private key authenticated SSL connections.
This is the first API stable release of HttpClient 4.0. All further
releases in the 4.0 code line will maintain API compatibility with this
release.
There has been a number of important bug fixes since ALPHA4. All upstream
projects are encouraged to upgrade to the latest release.
Please note HttpClient currently provides only limited support for NTLM
authentication. For details please see NTLM_SUPPORT.txt.
-------------------
Changelog:
-------------------
* [HTTPCLIENT-790] Protocol interceptors are now correctly invoked when
executing CONNECT methods.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-668] Do not use static loggers.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-781] Respect Keep-Alive header's timeout value.
Contributed by Sam Berlin <sberlin at apache.org>
* [HTTPCLIENT-779] Top-level classes (HttpClient, and HttpGet, HttpPut
and similar HttpMethods) throw fewer checked exceptions.
Contributed by Sam Berlin <sberlin at apache.org>
* HttpClient will throw an exception if an attempt is made to retry
a request with a non-repeatable request entity.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* Fixed request re-generation logic when retrying a failed request.
Auto-generated headers will no accumulate.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-424] Preemptive authentication no longer limited to BASIC
scheme only. HttpClient can be customized to authenticate preemptively
with DIGEST scheme.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-670] Pluggable hostname resolver.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-719] Clone support for HTTP request and cookie objects.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-776] Fixed concurrency issues with AbstractPoolEntry.
Contributed by Sam Berlin <sberlin at gmail.com>
* Resolved a long standing problem with HttpClient not taking into account
the user context when pooling / re-using connections. HttpClient now
correctly handles stateful / user specific connections such as persistent
NTLM connections and SSL connections with client side authentication.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-773] Improved handling of the 'expires' attribute by the
'Best Match' cookie spec.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* Partial NTLM support (requires an external NTLM engine). For details see
NTLM_SUPPORT.txt
Contributed by Oleg Kalnichevski <olegk at apache.org>
* Redesigned local execution context management.
Contributed by Oleg Kalnichevski <olegk at apache.org>
--------------------------------------
Release 4.0 Alpha 4
-------------------
ALPHA4 marks the completion of the overhaul of the connection management
code in HttpClient. All known shortcomings of the old HttpClient 3.x
connection management API have been addressed.
NTLM authentication remains the only missing major feature in the new
codeline that prevents us from moving awards the API freeze.
There has been a number of important bug fixes since ALPHA3. All upstream
projects are encouraged to upgrade to the latest release.
-------------------
HttpClient 3.x features that have NOT yet been ported:
-------------------
* NTLM authentication scheme
-------------------
Changelog:
-------------------
* [HTTPCLIENT-765] String.toLowerCase() / toUpperCase() should specify
Locale.ENGLISH
Contributed by Sebastian Bazley <sebb at apache.org>
* [HTTPCLIENT-769] Do not pool connection marked non-reusable.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-763] Fixed problem with AbstractClientConnAdapter#abortConnection()
not releasing the connection if called from the main execution thread while
there is no blocking I/O operation.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-652] Added optional state attribute to managed client connections.
This enables connection managers to correctly handle stateful connections.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-673] Revised max connections per route configuration
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-753] Class Scheme and related classes moved to a separate package
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-757] Improved request wrapping in the DefaultClientRequestDirector.
This also fixed the problem with the default proxy set at the client level
having no effect.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-734] Request abort will unblock the thread waiting for a connection
Contributed by Sam Berlin <sberlin at gmail.com>
* [HTTPCLIENT-759] Ensure release of connections back to the connection manager
on exceptions.
Contributed by Sam Berlin <sberlin at gmail.com>
* [HTTPCLIENT-758] Fixed the use of generics in AbstractHttpClient
#removeRequestInterceptorByClass and #removeResponseInterceptorByClass
Contributed by Johannes Koch <johannes.koch at fit.fraunhofer.de>
* [HTTPCLIENT-749] HttpParams beans
Contributed by Stojce Dimski <sdmiski at yahoo.it>
* [HTTPCLIENT-755] Workaround for known bugs in java.net.URI.resolve()
Bug ID: 4708535
Contributed by Johannes Koch <johannes.koch at fit.fraunhofer.de>
--------------------------------------
Release 4.0 Alpha 3
-------------------
ALPHA3 release brings another round of API refinements and improvements in
functionality. As of this release HttpClient requires Java 5 compatible
runtime environment and takes full advantage of generics and new concurrency
primitives.
This release also introduces new default cookie policy that selects a cookie
specification depending on the format of cookies sent by the target host.
It is no longer necessary to know beforehand what kind of HTTP cookie support
the target host provides. HttpClient is now able to pick up either a lenient
or a strict cookie policy depending on the compliance level of the target host.
Another notable improvement is a completely reworked support for multipart
entities based on Apache mime4j library.
-------------------
HttpClient 3.x features that have NOT yet been ported:
-------------------
* NTLM authentication scheme
-------------------
Changelog:
-------------------
* [HTTPCLIENT-742] common interface for HttpRoute and RouteTracker
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-741] Fixed concurrency issues in AbstractClientConnAdapter.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-726] testcase for spurious wakeups in ThreadSafeClientConnManager
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-643] Automatic connect fail-over for multi-home remote servers.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-735] unsetting of DEFAULT_PROXY and FORCED_ROUTE in hierarchies
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-723] route planner based on java.net.ProxySelector
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-740] don't start connection GC thread in pool constructor
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-736] route planners use SchemeRegistry instead of ConnManager
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-730] Fixed rewriting of URIs containing escaped characters
Contributed by Sam Berlin <sberlin at gmail.com> and
Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-667] Added 'Meta' cookie policy that selects a cookie
specification depending on the format of the cookie(s).
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-729] Move HttpRoute and related classes to routing package.
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-725] Use TimeUnit arguments for timeouts in connection manager.
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-677] Connection manager no longer uses Thread.interrupt().
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-716] Allow application-defined routes.
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-712] Improve HttpRoute API
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-711] Bad route computed for redirected requests
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-715] Remove RoutedRequest from API
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-705] Fixed incorrect handling of URIs with null path component.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-688] HttpOptions#getAllowedMethods can now handle multiple
Allow headers.
Contributed by Andrea Selva <selva.andre at gmail.com>
--------------------------------------
Release 4.0 Alpha 2
-------------------
ALPHA2 release is another milestone in the redesign of HttpClient. It includes
a number of improvements since ALPHA1, among which are improved connection
pooling, support for proxy chains, redesigned HTTP state and authentication
credentials management API, improved RFC 2965 cookie specification.
-------------------
HttpClient 3.x features that have NOT yet been ported
-------------------
* NTLM authentication scheme
* Support for multipart MIME coded entities
-------------------
Changelog
-------------------
* [HTTPCLIENT-698] Resolve non-absolute redirect URIs relative to
the request URI
Contributed by Johannes Koch <johannes.koch at fit.fraunhofer.de>
* [HTTPCLIENT-697] Throw a more intelligible exception when connection
to a remote host cannot be established.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-689] Caching of SimpleDateFormat in DateUtils
Contributed by Daniel Müller <strider at digitalstrider.com>
* [HTTPCLIENT-689] stackable parameters in AbstractHttpClient
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-477] Use distinct instances of the authentication handler
interface for authentication with target and proxy hosts
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-690] ManagedClientConnection provides access to SSLSession
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-692] ClientConnectionManager throws InterruptedException
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCORE-116] moved parameter names to interfaces
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-649] support for proxy chains in HttpConn
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-636] refactor ThreadSafeClientConnManager in separate package
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-669] new HttpRoutePlanner interface and implementation
Contributed by Andrea Selva <selva.andre at gmail.com>
* [HTTPCLIENT-653] detached connection wrapper no longer prevents
garbage collection of ThreadSafeClientConnManager
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-674] use org.apache.http.util.VersionInfo instead of a local one
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-666] Replaced HttpState with CredentialsProvier and CookieStore interfaces
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCORE-100] revised HttpContext hierarchy
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-618] eliminate class HostConfiguration
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-672] re-sync with API changes in core alpha6-SNAPSHOT
Contributed by Roland Weber <rolandw at apache.org>
--------------------------------------
Release 4.0 Alpha 1
-------------------
HttpClient 4.0 represents a complete, ground-up redesign and almost a complete
rewrite of the HttpClient 3.x codeline. This release finally addresses several
design flaws that existed since the 1.0 release and could not be fixed without
a major code overhaul and breaking API compatibility.
The HttpClient 4.0 API is still very experimental and is bound to change
during the course of the ALPHA development phase. Several important features
have not yet been ported to the new API.
Architectural changes
---------------------
* Redesign of the HttpClient internals addressing all known
major architectural shortcomings of the 3.x codeline
* Cleaner, more flexible and expressive API
* Better performance and smaller memory footprint due to a more
efficient HTTP transport based on HttpCore. HttpClient 4.0 is
expected to be 10% to 25% faster than HttpClient 3.x codeline
* More modular structure
* Pluggable redirect and authentication handlers
* Support for protocol incerceptors
* Improved connection management
* Improved support for sending requests via a proxy or a chain of
proxies
* Improved handling redirects of entity enclosing requests
* More flexible SSL context customization
* Reduced intermediate garbage in the process of
generating HTTP requests and parsing HTTP responses
-------------------
HttpClient 3.x features that have NOT yet been ported
-------------------
* NTLM authentication scheme
* RFC2965 cookie policy (Cookie2)
* Support for multipart MIME coded entities
-------------------
Changelog
-------------------
The following is a list of contributions tracked in JIRA.
Note that this is not a complete list of contributions or changes.
Since the API was redesigned completely, tracking everything outside
of the source code repository would have been too burdensome.
* [HTTPCLIENT-655] User-Agent string no longer violates RFC
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-541] Virtual host API redesign
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-614] Allow for different strategies when checking
CN of x509 certificates
Contributed by Julius Davies <juliusdavies at gmail.com>
* [HTTPCLIENT-136] Fixed inadequate proxy support
Long standing architectural problem. Issue opened on 19/Dec/2002.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-63] Support for pluggable redirect and authentication handlers
Long standing architectural problem. Issue opened on 15/Jul/2002.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-245] Fixed redirect handling. HttpClient can now automatically
handle redirects of entity enclosing requests.
Long standing architectural problem. Issue opened on 14/Jul/2003.
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-613] HTTPS connections now verify CN of x509 certificates
Contributed by Julius Davies <juliusdavies at gmail.com>
* [HTTPCLIENT-497] Wire/header logger names consistent with class loggers
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-484] AuthSSLProtocolSocketFactory in the main distribution
Contributed by Oleg Kalnichevski <olegk at apache.org>
* [HTTPCLIENT-589] Do not consume the remaining response content if
the connection is to be closed
Contributed by Roland Weber <rolandw at apache.org>
* [HTTPCLIENT-475] Support for unconnected sockets. HTTP requests can now be
aborted while network socket is still being connected.
Contributed by Roland Weber <rolandw at apache.org>
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