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view libs/httpcomponents-client-4.0-beta1/RELEASE_NOTES.txt @ 5:0be9d53a6967

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author dwinter
date Tue, 13 Dec 2011 17:43:46 +0100
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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>

HttpClient API changes (generated by JarDiff 0.2)
--------------------------------------

Class removed: 
  public org.apache.http.client.AuthState extends java.lang.Object
Class removed: 
  public abstract org.apache.http.client.ClientRequestDirector extends java.lang.Object
Class removed: 
  public org.apache.http.conn.params.HttpConnParams extends java.lang.Object
Class removed: 
  public final org.apache.http.conn.params.HttpConnectionManagerParams extends java.lang.Object implements org.apache.http.conn.params.ConnManagerPNames
Class removed: 
  public org.apache.http.conn.params.HttpRouteParams extends java.lang.Object
Class removed: 
  public org.apache.http.impl.client.DefaultClientRequestDirector extends java.lang.Object implements org.apache.http.client.ClientRequestDirector
Class added: 
  public org.apache.http.auth.AuthState extends java.lang.Object
Class added: 
  public final org.apache.http.auth.BasicUserPrincipal extends java.lang.Object implements java.security.Principal
Class added: 
  public org.apache.http.auth.NTCredentials extends java.lang.Object implements org.apache.http.auth.Credentials
Class added: 
  public org.apache.http.auth.NTUserPrincipal extends java.lang.Object implements java.security.Principal
Class added: 
  public org.apache.http.client.ClientProtocolException extends java.io.IOException
Class added: 
  public org.apache.http.client.HttpResponseException extends org.apache.http.client.ClientProtocolException
Class added: 
  public org.apache.http.client.NonRepeatableRequestException extends org.apache.http.ProtocolException
Class added: 
  public abstract org.apache.http.client.RequestDirector extends java.lang.Object
Class added: 
  public abstract org.apache.http.client.ResponseHandler extends java.lang.Object
Class added: 
  public abstract org.apache.http.client.UserTokenHandler extends java.lang.Object
Class added: 
  public org.apache.http.client.utils.CloneUtils extends java.lang.Object
Class added: 
  public abstract org.apache.http.client.utils.Idn extends java.lang.Object
Class added: 
  public org.apache.http.client.utils.JdkIdn extends java.lang.Object implements org.apache.http.client.utils.Idn
Class added: 
  public org.apache.http.client.utils.Punycode extends java.lang.Object
Class added: 
  public org.apache.http.client.utils.Rfc3492Idn extends java.lang.Object implements org.apache.http.client.utils.Idn
Class added: 
  public abstract org.apache.http.conn.ConnectionKeepAliveStrategy extends java.lang.Object
Class added: 
  public final org.apache.http.conn.params.ConnManagerParams extends java.lang.Object implements org.apache.http.conn.params.ConnManagerPNames
Class added: 
  public org.apache.http.conn.params.ConnRouteParams extends java.lang.Object implements org.apache.http.conn.params.ConnRoutePNames
Class added: 
  public abstract org.apache.http.conn.scheme.HostNameResolver extends java.lang.Object
Class added: 
  public abstract org.apache.http.impl.auth.AuthSchemeBase extends java.lang.Object implements org.apache.http.auth.AuthScheme
Class added: 
  public abstract org.apache.http.impl.auth.NTLMEngine extends java.lang.Object
Class added: 
  public org.apache.http.impl.auth.NTLMEngineException extends org.apache.http.auth.AuthenticationException
Class added: 
  public org.apache.http.impl.auth.NTLMScheme extends org.apache.http.impl.auth.AuthSchemeBase
Class added: 
  public org.apache.http.impl.client.BasicResponseHandler extends java.lang.Object implements org.apache.http.client.ResponseHandler
Class added: 
  public org.apache.http.impl.client.DefaultConnectionKeepAliveStrategy extends java.lang.Object implements org.apache.http.conn.ConnectionKeepAliveStrategy
Class added: 
  public org.apache.http.impl.client.DefaultRequestDirector extends java.lang.Object implements org.apache.http.client.RequestDirector
Class added: 
  public org.apache.http.impl.client.DefaultUserTokenHandler extends java.lang.Object implements org.apache.http.client.UserTokenHandler
Class added: 
  public org.apache.http.impl.cookie.PublicSuffixFilter extends java.lang.Object implements org.apache.http.cookie.CookieAttributeHandler
Class added: 
  public org.apache.http.impl.cookie.PublicSuffixListParser extends java.lang.Object
Class changed: org.apache.http.auth.Credentials
  Methods removed:
    public abstract java.lang.String getPrincipalName();

  Methods added:
    public abstract java.security.Principal getUserPrincipal();

Class changed: org.apache.http.auth.UsernamePasswordCredentials
  Methods removed:
    public java.lang.String getPrincipalName();
    public java.lang.String toText();

  Methods added:
    public java.lang.String getUserName();
    public java.security.Principal getUserPrincipal();

Class changed: org.apache.http.client.HttpClient
  Methods removed:
    public abstract org.apache.http.protocol.HttpContext getDefaultContext();

  Methods added:
    public abstract java.lang.Object execute(org.apache.http.HttpHost, org.apache.http.HttpRequest, org.apache.http.client.ResponseHandler) throws java.io.IOException, org.apache.http.client.ClientProtocolException;
    public abstract java.lang.Object execute(org.apache.http.HttpHost, org.apache.http.HttpRequest, org.apache.http.client.ResponseHandler, org.apache.http.protocol.HttpContext) throws java.io.IOException, org.apache.http.client.ClientProtocolException;
    public abstract java.lang.Object execute(org.apache.http.client.methods.HttpUriRequest, org.apache.http.client.ResponseHandler) throws java.io.IOException, org.apache.http.client.ClientProtocolException;
    public abstract java.lang.Object execute(org.apache.http.client.methods.HttpUriRequest, org.apache.http.client.ResponseHandler, org.apache.http.protocol.HttpContext) throws java.io.IOException, org.apache.http.client.ClientProtocolException;

  Method changed:
  old:
    public abstract org.apache.http.HttpResponse execute(org.apache.http.HttpHost, org.apache.http.HttpRequest) throws org.apache.http.HttpException, java.io.IOException;

  new:
    public abstract org.apache.http.HttpResponse execute(org.apache.http.HttpHost, org.apache.http.HttpRequest) throws java.io.IOException, org.apache.http.client.ClientProtocolException;

  Method changed:
  old:
    public abstract org.apache.http.HttpResponse execute(org.apache.http.HttpHost, org.apache.http.HttpRequest, org.apache.http.protocol.HttpContext) throws org.apache.http.HttpException, java.io.IOException;

  new:
    public abstract org.apache.http.HttpResponse execute(org.apache.http.HttpHost, org.apache.http.HttpRequest, org.apache.http.protocol.HttpContext) throws java.io.IOException, org.apache.http.client.ClientProtocolException;

  Method changed:
  old:
    public abstract org.apache.http.HttpResponse execute(org.apache.http.client.methods.HttpUriRequest) throws org.apache.http.HttpException, java.io.IOException;

  new:
    public abstract org.apache.http.HttpResponse execute(org.apache.http.client.methods.HttpUriRequest) throws java.io.IOException, org.apache.http.client.ClientProtocolException;

  Method changed:
  old:
    public abstract org.apache.http.HttpResponse execute(org.apache.http.client.methods.HttpUriRequest, org.apache.http.protocol.HttpContext) throws org.apache.http.HttpException, java.io.IOException;

  new:
    public abstract org.apache.http.HttpResponse execute(org.apache.http.client.methods.HttpUriRequest, org.apache.http.protocol.HttpContext) throws java.io.IOException, org.apache.http.client.ClientProtocolException;

Class changed: org.apache.http.client.methods.HttpDelete
  Method changed:
  old:
    public HttpDelete(java.lang.String) throws java.net.URISyntaxException;

  new:
    public HttpDelete(java.lang.String);

Class changed: org.apache.http.client.methods.HttpEntityEnclosingRequestBase
  Methods added:
    public java.lang.Object clone() throws java.lang.CloneNotSupportedException;

  Class descriptor changed:
  old:
    package abstract org.apache.http.client.methods.HttpEntityEnclosingRequestBase extends org.apache.http.client.methods.HttpRequestBase implements org.apache.http.HttpEntityEnclosingRequest
  new:
    public abstract org.apache.http.client.methods.HttpEntityEnclosingRequestBase extends org.apache.http.client.methods.HttpRequestBase implements org.apache.http.HttpEntityEnclosingRequest
Class changed: org.apache.http.client.methods.HttpGet
  Method changed:
  old:
    public HttpGet(java.lang.String) throws java.net.URISyntaxException;

  new:
    public HttpGet(java.lang.String);

Class changed: org.apache.http.client.methods.HttpHead
  Method changed:
  old:
    public HttpHead(java.lang.String) throws java.net.URISyntaxException;

  new:
    public HttpHead(java.lang.String);

Class changed: org.apache.http.client.methods.HttpOptions
  Method changed:
  old:
    public HttpOptions(java.lang.String) throws java.net.URISyntaxException;

  new:
    public HttpOptions(java.lang.String);

Class changed: org.apache.http.client.methods.HttpPost
  Method changed:
  old:
    public HttpPost(java.lang.String) throws java.net.URISyntaxException;

  new:
    public HttpPost(java.lang.String);

Class changed: org.apache.http.client.methods.HttpPut
  Method changed:
  old:
    public HttpPut(java.lang.String) throws java.net.URISyntaxException;

  new:
    public HttpPut(java.lang.String);

Class changed: org.apache.http.client.methods.HttpRequestBase
  Methods added:
    public java.lang.Object clone() throws java.lang.CloneNotSupportedException;
    public boolean isAborted();

  Class descriptor changed:
  old:
    package abstract org.apache.http.client.methods.HttpRequestBase extends org.apache.http.message.AbstractHttpMessage implements org.apache.http.client.methods.HttpUriRequest, org.apache.http.client.methods.AbortableHttpRequest
  new:
    public abstract org.apache.http.client.methods.HttpRequestBase extends org.apache.http.message.AbstractHttpMessage implements org.apache.http.client.methods.HttpUriRequest, org.apache.http.client.methods.AbortableHttpRequest, java.lang.Cloneable
Class changed: org.apache.http.client.methods.HttpTrace
  Method changed:
  old:
    public HttpTrace(java.lang.String) throws java.net.URISyntaxException;

  new:
    public HttpTrace(java.lang.String);

Class changed: org.apache.http.client.methods.HttpUriRequest
  Methods added:
    public abstract void abort() throws java.lang.UnsupportedOperationException;
    public abstract boolean isAborted();

Class changed: org.apache.http.client.params.ClientPNames
  Fields removed:
    public final static java.lang.String CONNECTION_MANAGER_TIMEOUT = http.connection-manager.timeout;
    public final static java.lang.String PREEMPTIVE_AUTHENTICATION = http.protocol.authentication-preemptive;

Class changed: org.apache.http.client.params.ClientParamBean
  Methods removed:
    public void setConnectionManagerTimeout(long);
    public void setPreemptiveAuthentication(boolean);

Class changed: org.apache.http.client.params.HttpClientParams
  Methods removed:
    public static long getConnectionManagerTimeout(org.apache.http.params.HttpParams);
    public static boolean isAuthenticationPreemptive(org.apache.http.params.HttpParams);
    public static void setAuthenticationPreemptive(org.apache.http.params.HttpParams, boolean);
    public static void setConnectionManagerTimeout(org.apache.http.params.HttpParams, long);

Class changed: org.apache.http.client.protocol.ClientContext
  Fields added:
    public final static java.lang.String AUTH_SCHEME_PREF = http.auth.scheme-pref;
    public final static java.lang.String USER_TOKEN = http.user-token;

Class changed: org.apache.http.client.protocol.ClientContextConfigurer
  Methods added:
    public void setAuthSchemePref(java.util.List);
    public void setAuthSchemeRegistry(org.apache.http.auth.AuthSchemeRegistry);
    public void setCookieSpecRegistry(org.apache.http.cookie.CookieSpecRegistry);
    public void setCredentialsProvider(org.apache.http.client.CredentialsProvider);

  Class descriptor changed:
  old:
    public org.apache.http.client.protocol.ClientContextConfigurer extends java.lang.Object
  new:
    public org.apache.http.client.protocol.ClientContextConfigurer extends java.lang.Object implements org.apache.http.client.protocol.ClientContext
Class changed: org.apache.http.conn.BasicManagedEntity
  Field changed:
  old:
    protected boolean attemptReuse;

  new:
    protected final boolean attemptReuse;

Class changed: org.apache.http.conn.ClientConnectionManager
  Methods removed:
    public abstract void releaseConnection(org.apache.http.conn.ManagedClientConnection);

  Methods added:
    public abstract void closeExpiredConnections();
    public abstract void releaseConnection(org.apache.http.conn.ManagedClientConnection, long, java.util.concurrent.TimeUnit);

Class changed: org.apache.http.conn.ManagedClientConnection
  Methods added:
    public abstract void setIdleDuration(long, java.util.concurrent.TimeUnit);

Class changed: org.apache.http.conn.params.ConnManagerPNames
  Fields added:
    public final static java.lang.String TIMEOUT = http.conn-manager.timeout;

Class changed: org.apache.http.conn.params.ConnManagerParamBean
  Methods added:
    public void setTimeout(long);

Class changed: org.apache.http.conn.scheme.PlainSocketFactory
  Methods added:
    public PlainSocketFactory();
    public PlainSocketFactory(org.apache.http.conn.scheme.HostNameResolver);

Class changed: org.apache.http.conn.ssl.SSLSocketFactory
  Methods removed:
    public SSLSocketFactory(java.lang.String, java.security.KeyStore, java.lang.String, java.security.KeyStore, java.security.SecureRandom) throws java.security.NoSuchAlgorithmException, java.security.KeyManagementException, java.security.KeyStoreException, java.security.UnrecoverableKeyException;

  Methods added:
    public SSLSocketFactory(java.lang.String, java.security.KeyStore, java.lang.String, java.security.KeyStore, java.security.SecureRandom, org.apache.http.conn.scheme.HostNameResolver) throws java.security.NoSuchAlgorithmException, java.security.KeyManagementException, java.security.KeyStoreException, java.security.UnrecoverableKeyException;
    public SSLSocketFactory(javax.net.ssl.SSLContext);
    public SSLSocketFactory(javax.net.ssl.SSLContext, org.apache.http.conn.scheme.HostNameResolver);

Class changed: org.apache.http.impl.auth.DigestScheme
  Methods added:
    public void overrideParamter(java.lang.String, java.lang.String);

Class changed: org.apache.http.impl.auth.RFC2617Scheme
  Methods removed:
    public boolean isProxy();
    public void processChallenge(org.apache.http.Header) throws org.apache.http.auth.MalformedChallengeException;

  Methods added:
    protected void parseChallenge(org.apache.http.util.CharArrayBuffer, int, int) throws org.apache.http.auth.MalformedChallengeException;

  Class descriptor changed:
  old:
    public abstract org.apache.http.impl.auth.RFC2617Scheme extends java.lang.Object implements org.apache.http.auth.AuthScheme
  new:
    public abstract org.apache.http.impl.auth.RFC2617Scheme extends org.apache.http.impl.auth.AuthSchemeBase
Class changed: org.apache.http.impl.client.AbstractHttpClient
  Methods removed:
    protected org.apache.http.client.ClientRequestDirector createClientRequestDirector(org.apache.http.conn.ClientConnectionManager, org.apache.http.ConnectionReuseStrategy, org.apache.http.conn.routing.HttpRoutePlanner, org.apache.http.protocol.HttpProcessor, org.apache.http.client.HttpRequestRetryHandler, org.apache.http.client.RedirectHandler, org.apache.http.client.AuthenticationHandler, org.apache.http.client.AuthenticationHandler, org.apache.http.params.HttpParams);
    public final synchronized org.apache.http.protocol.HttpContext getDefaultContext();
    protected abstract void populateContext(org.apache.http.protocol.HttpContext);

  Methods added:
    protected org.apache.http.client.RequestDirector createClientRequestDirector(org.apache.http.protocol.HttpRequestExecutor, org.apache.http.conn.ClientConnectionManager, org.apache.http.ConnectionReuseStrategy, org.apache.http.conn.ConnectionKeepAliveStrategy, org.apache.http.conn.routing.HttpRoutePlanner, org.apache.http.protocol.HttpProcessor, org.apache.http.client.HttpRequestRetryHandler, org.apache.http.client.RedirectHandler, org.apache.http.client.AuthenticationHandler, org.apache.http.client.AuthenticationHandler, org.apache.http.client.UserTokenHandler, org.apache.http.params.HttpParams);
    protected abstract org.apache.http.conn.ConnectionKeepAliveStrategy createConnectionKeepAliveStrategy();
    protected abstract org.apache.http.protocol.HttpRequestExecutor createRequestExecutor();
    protected abstract org.apache.http.client.UserTokenHandler createUserTokenHandler();
    public java.lang.Object execute(org.apache.http.HttpHost, org.apache.http.HttpRequest, org.apache.http.client.ResponseHandler) throws java.io.IOException, org.apache.http.client.ClientProtocolException;
    public java.lang.Object execute(org.apache.http.HttpHost, org.apache.http.HttpRequest, org.apache.http.client.ResponseHandler, org.apache.http.protocol.HttpContext) throws java.io.IOException, org.apache.http.client.ClientProtocolException;
    public java.lang.Object execute(org.apache.http.client.methods.HttpUriRequest, org.apache.http.client.ResponseHandler) throws java.io.IOException, org.apache.http.client.ClientProtocolException;
    public java.lang.Object execute(org.apache.http.client.methods.HttpUriRequest, org.apache.http.client.ResponseHandler, org.apache.http.protocol.HttpContext) throws java.io.IOException, org.apache.http.client.ClientProtocolException;
    public final synchronized org.apache.http.conn.ConnectionKeepAliveStrategy getConnectionKeepAliveStrategy();
    public final synchronized org.apache.http.protocol.HttpRequestExecutor getRequestExecutor();
    public final synchronized org.apache.http.client.UserTokenHandler getUserTokenHandler();
    public synchronized void setKeepAliveStrategy(org.apache.http.conn.ConnectionKeepAliveStrategy);
    public synchronized void setUserTokenHandler(org.apache.http.client.UserTokenHandler);

  Method changed:
  old:
    public final org.apache.http.HttpResponse execute(org.apache.http.HttpHost, org.apache.http.HttpRequest) throws org.apache.http.HttpException, java.io.IOException;

  new:
    public final org.apache.http.HttpResponse execute(org.apache.http.HttpHost, org.apache.http.HttpRequest) throws java.io.IOException, org.apache.http.client.ClientProtocolException;

  Method changed:
  old:
    public final org.apache.http.HttpResponse execute(org.apache.http.HttpHost, org.apache.http.HttpRequest, org.apache.http.protocol.HttpContext) throws org.apache.http.HttpException, java.io.IOException;

  new:
    public final org.apache.http.HttpResponse execute(org.apache.http.HttpHost, org.apache.http.HttpRequest, org.apache.http.protocol.HttpContext) throws java.io.IOException, org.apache.http.client.ClientProtocolException;

  Method changed:
  old:
    public final org.apache.http.HttpResponse execute(org.apache.http.client.methods.HttpUriRequest) throws org.apache.http.HttpException, java.io.IOException;

  new:
    public final org.apache.http.HttpResponse execute(org.apache.http.client.methods.HttpUriRequest) throws java.io.IOException, org.apache.http.client.ClientProtocolException;

  Method changed:
  old:
    public final org.apache.http.HttpResponse execute(org.apache.http.client.methods.HttpUriRequest, org.apache.http.protocol.HttpContext) throws org.apache.http.HttpException, java.io.IOException;

  new:
    public final org.apache.http.HttpResponse execute(org.apache.http.client.methods.HttpUriRequest, org.apache.http.protocol.HttpContext) throws java.io.IOException, org.apache.http.client.ClientProtocolException;

Class changed: org.apache.http.impl.client.DefaultHttpClient
  Methods removed:
    protected void populateContext(org.apache.http.protocol.HttpContext);

  Methods added:
    protected org.apache.http.conn.ConnectionKeepAliveStrategy createConnectionKeepAliveStrategy();
    protected org.apache.http.protocol.HttpRequestExecutor createRequestExecutor();
    protected org.apache.http.client.UserTokenHandler createUserTokenHandler();

Class changed: org.apache.http.impl.client.EntityEnclosingRequestWrapper
  Methods added:
    public boolean isRepeatable();

  Class descriptor changed:
  old:
    package org.apache.http.impl.client.EntityEnclosingRequestWrapper extends org.apache.http.impl.client.RequestWrapper implements org.apache.http.HttpEntityEnclosingRequest
  new:
    public org.apache.http.impl.client.EntityEnclosingRequestWrapper extends org.apache.http.impl.client.RequestWrapper implements org.apache.http.HttpEntityEnclosingRequest
Class changed: org.apache.http.impl.client.RequestWrapper
  Methods added:
    public void abort() throws java.lang.UnsupportedOperationException;
    public int getExecCount();
    public void incrementExecCount();
    public boolean isAborted();
    public boolean isRepeatable();
    public void resetHeaders();

  Class descriptor changed:
  old:
    package org.apache.http.impl.client.RequestWrapper extends org.apache.http.message.AbstractHttpMessage implements org.apache.http.client.methods.HttpUriRequest
  new:
    public org.apache.http.impl.client.RequestWrapper extends org.apache.http.message.AbstractHttpMessage implements org.apache.http.client.methods.HttpUriRequest
Class changed: org.apache.http.impl.conn.AbstractClientConnAdapter
  Methods added:
    public void setIdleDuration(long, java.util.concurrent.TimeUnit);

Class changed: org.apache.http.impl.conn.AbstractPoolEntry
  Methods removed:
    protected void resetTrackedRoute();

  Methods added:
    protected void shutdownEntry();

  Field changed:
  old:
    protected volatile org.apache.http.conn.OperatedClientConnection connection;

  new:
    protected final org.apache.http.conn.OperatedClientConnection connection;

Class changed: org.apache.http.impl.conn.DefaultClientConnection
  Method changed:
  old:
    public void opening(java.net.Socket, org.apache.http.HttpHost);

  new:
    public void opening(java.net.Socket, org.apache.http.HttpHost) throws java.io.IOException;

Class changed: org.apache.http.impl.conn.IdleConnectionHandler
  Methods removed:
    public void add(org.apache.http.HttpConnection);
    public void remove(org.apache.http.HttpConnection);

  Methods added:
    public void add(org.apache.http.HttpConnection, long, java.util.concurrent.TimeUnit);
    public void closeExpiredConnections();
    public boolean remove(org.apache.http.HttpConnection);

Class changed: org.apache.http.impl.conn.LoggingSessionInputBuffer
  Class descriptor changed:
  old:
    package org.apache.http.impl.conn.LoggingSessionInputBuffer extends java.lang.Object implements org.apache.http.io.SessionInputBuffer
  new:
    public org.apache.http.impl.conn.LoggingSessionInputBuffer extends java.lang.Object implements org.apache.http.io.SessionInputBuffer
Class changed: org.apache.http.impl.conn.LoggingSessionOutputBuffer
  Class descriptor changed:
  old:
    package org.apache.http.impl.conn.LoggingSessionOutputBuffer extends java.lang.Object implements org.apache.http.io.SessionOutputBuffer
  new:
    public org.apache.http.impl.conn.LoggingSessionOutputBuffer extends java.lang.Object implements org.apache.http.io.SessionOutputBuffer
Class changed: org.apache.http.impl.conn.SingleClientConnManager
  Methods removed:
    public void releaseConnection(org.apache.http.conn.ManagedClientConnection);

  Methods added:
    public void closeExpiredConnections();
    public void releaseConnection(org.apache.http.conn.ManagedClientConnection, long, java.util.concurrent.TimeUnit);

  Fields added:
    protected long connectionExpiresTime;

Class changed: org.apache.http.impl.conn.tsccm.AbstractConnPool
  Methods removed:
    public abstract void freeEntry(org.apache.http.impl.conn.tsccm.BasicPoolEntry, boolean);

  Methods added:
    public void closeExpiredConnections();
    public abstract void freeEntry(org.apache.http.impl.conn.tsccm.BasicPoolEntry, boolean, long, java.util.concurrent.TimeUnit);

Class changed: org.apache.http.impl.conn.tsccm.ConnPoolByRoute
  Methods removed:
    public void freeEntry(org.apache.http.impl.conn.tsccm.BasicPoolEntry, boolean);

  Methods added:
    public void freeEntry(org.apache.http.impl.conn.tsccm.BasicPoolEntry, boolean, long, java.util.concurrent.TimeUnit);

Class changed: org.apache.http.impl.conn.tsccm.RefQueueWorker
  Fields removed:
    protected final org.apache.commons.logging.Log LOG;

Class changed: org.apache.http.impl.conn.tsccm.RouteSpecificPool
  Methods removed:
    public org.apache.http.impl.conn.tsccm.WaitingThread dequeueThread();

  Methods added:
    public org.apache.http.impl.conn.tsccm.WaitingThread nextThread();

Class changed: org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager
  Methods removed:
    public void releaseConnection(org.apache.http.conn.ManagedClientConnection);

  Methods added:
    public void closeExpiredConnections();
    public void releaseConnection(org.apache.http.conn.ManagedClientConnection, long, java.util.concurrent.TimeUnit);

Class changed: org.apache.http.impl.cookie.BasicClientCookie
  Methods added:
    public java.lang.Object clone() throws java.lang.CloneNotSupportedException;

  Class descriptor changed:
  old:
    public org.apache.http.impl.cookie.BasicClientCookie extends java.lang.Object implements org.apache.http.cookie.SetCookie, org.apache.http.cookie.ClientCookie
  new:
    public org.apache.http.impl.cookie.BasicClientCookie extends java.lang.Object implements org.apache.http.cookie.SetCookie, org.apache.http.cookie.ClientCookie, java.lang.Cloneable
Class changed: org.apache.http.impl.cookie.BasicClientCookie2
  Methods added:
    public java.lang.Object clone() throws java.lang.CloneNotSupportedException;

Class changed: org.apache.http.impl.cookie.BrowserCompatSpec
  Fields added:
    protected final static java.lang.String[] DATE_PATTERNS;

Class changed: org.apache.http.impl.cookie.NetscapeDraftSpec
  Methods added:
    public NetscapeDraftSpec(java.lang.String[]);

  Fields added:
    protected final static java.lang.String EXPIRES_PATTERN = EEE, dd-MMM-yyyy HH:mm:ss z;

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

HttpMime API changes (generated by JarDiff 0.2)
--------------------------------------

Class removed: 
  public abstract org.apache.http.entity.mime.ContentDescriptor extends java.lang.Object
Class changed: org.apache.http.entity.mime.FormBodyPart
  Methods removed:
    protected void generateContentType(org.apache.http.entity.mime.ContentDescriptor);
    protected void generateTransferEncoding(org.apache.http.entity.mime.ContentDescriptor);

  Methods added:
    protected void generateContentType(org.apache.james.mime4j.descriptor.ContentDescriptor);
    protected void generateTransferEncoding(org.apache.james.mime4j.descriptor.ContentDescriptor);

Class changed: org.apache.http.entity.mime.HttpMultipart
  Methods removed:
    public HttpMultipart();

  Methods added:
    public HttpMultipart(java.lang.String);
    public void writeTo(java.io.OutputStream, int) throws java.io.IOException, org.apache.james.mime4j.MimeException;

Class changed: org.apache.http.entity.mime.content.ContentBody
  Class descriptor changed:
  old:
    public abstract org.apache.http.entity.mime.content.ContentBody extends java.lang.Object implements org.apache.james.mime4j.message.Body, org.apache.http.entity.mime.ContentDescriptor
  new:
    public abstract org.apache.http.entity.mime.content.ContentBody extends java.lang.Object implements org.apache.james.mime4j.message.Body, org.apache.james.mime4j.descriptor.ContentDescriptor
Class changed: org.apache.http.entity.mime.content.FileBody
  Methods removed:
    public java.nio.charset.Charset getCharset();
    public void writeTo(java.io.OutputStream) throws java.io.IOException;

  Methods added:
    public java.lang.String getCharset();
    public java.util.Map getContentTypeParameters();
    public java.lang.String getMediaType();
    public java.lang.String getSubType();
    public void writeTo(java.io.OutputStream, int) throws java.io.IOException;

Class changed: org.apache.http.entity.mime.content.InputStreamBody
  Methods removed:
    public java.nio.charset.Charset getCharset();
    public void writeTo(java.io.OutputStream) throws java.io.IOException;

  Methods added:
    public java.lang.String getCharset();
    public java.util.Map getContentTypeParameters();
    public java.lang.String getMediaType();
    public java.lang.String getSubType();
    public void writeTo(java.io.OutputStream, int) throws java.io.IOException;

Class changed: org.apache.http.entity.mime.content.StringBody
  Methods removed:
    public java.nio.charset.Charset getCharset();
    public void writeTo(java.io.OutputStream) throws java.io.IOException;

  Methods added:
    public java.lang.String getCharset();
    public java.util.Map getContentTypeParameters();
    public java.lang.String getMediaType();
    public java.lang.String getSubType();
    public void writeTo(java.io.OutputStream, int) throws java.io.IOException;

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

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

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>