httpcomponents-client/RELEASE_NOTES.txt

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>


HttpClient API changes (generated by JarDiff 0.2)
--------------------------------------
Class changed: org.apache.http.conn.scheme.PlainSocketFactory
  Methods removed:
    public boolean equals(java.lang.Object);
    public int hashCode();

Class changed: org.apache.http.conn.ssl.AbstractVerifier
  Method changed:
  old:
    public final boolean verify(java.lang.String, javax.net.ssl.SSLSession);

  new:
    deprecated: public final boolean verify(java.lang.String, javax.net.ssl.SSLSession);

Class changed: org.apache.http.impl.conn.tsccm.BasicPoolEntry
  Methods added:
    protected void shutdownEntry();

Class changed: org.apache.http.impl.cookie.RFC2965Spec
  Methods added:
    protected java.util.List parse(org.apache.http.HeaderElement[], org.apache.http.cookie.CookieOrigin) throws org.apache.http.cookie.MalformedCookieException;

API diff generated by JarDiff http://www.osjava.org/jardiff/

HttpMime API changes (generated by JarDiff 0.2)
--------------------------------------
Class added: 
  public org.apache.http.entity.mime.UnexpectedMimeException extends java.lang.RuntimeException
Class added: 
  public abstract org.apache.http.entity.mime.content.AbstractContentBody extends org.apache.james.mime4j.message.AbstractBody implements org.apache.http.entity.mime.content.ContentBody
Class changed: org.apache.http.entity.mime.content.FileBody
  Methods removed:
    public java.util.Map getContentTypeParameters();
    public java.lang.String getMediaType();
    public java.lang.String getMimeType();
    public java.lang.String getSubType();

  Methods added:
    public FileBody(java.io.File, java.lang.String);

  Class descriptor changed:
  old:
    public org.apache.http.entity.mime.content.FileBody extends org.apache.james.mime4j.message.AbstractBody implements org.apache.james.mime4j.message.BinaryBody, org.apache.http.entity.mime.content.ContentBody
  new:
    public org.apache.http.entity.mime.content.FileBody extends org.apache.http.entity.mime.content.AbstractContentBody implements org.apache.james.mime4j.message.BinaryBody
Class changed: org.apache.http.entity.mime.content.InputStreamBody
  Methods removed:
    public java.util.Map getContentTypeParameters();
    public java.lang.String getMediaType();
    public java.lang.String getMimeType();
    public java.lang.String getSubType();

  Methods added:
    public InputStreamBody(java.io.InputStream, java.lang.String, java.lang.String);

  Class descriptor changed:
  old:
    public org.apache.http.entity.mime.content.InputStreamBody extends org.apache.james.mime4j.message.AbstractBody implements org.apache.james.mime4j.message.BinaryBody, org.apache.http.entity.mime.content.ContentBody
  new:
    public org.apache.http.entity.mime.content.InputStreamBody extends org.apache.http.entity.mime.content.AbstractContentBody implements org.apache.james.mime4j.message.BinaryBody
Class changed: org.apache.http.entity.mime.content.StringBody
  Methods removed:
    public java.lang.String getMediaType();
    public java.lang.String getMimeType();
    public java.lang.String getSubType();

  Methods added:
    public StringBody(java.lang.String, java.lang.String, java.nio.charset.Charset) throws java.io.UnsupportedEncodingException;

  Class descriptor changed:
  old:
    public org.apache.http.entity.mime.content.StringBody extends org.apache.james.mime4j.message.AbstractBody implements org.apache.james.mime4j.message.TextBody, org.apache.http.entity.mime.content.ContentBody
  new:
    public org.apache.http.entity.mime.content.StringBody extends org.apache.http.entity.mime.content.AbstractContentBody implements org.apache.james.mime4j.message.TextBody
API diff generated by JarDiff http://www.osjava.org/jardiff/

--------------------------------------

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>