/*
* $Header: /home/cvs/jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/HttpClient.java,v 1.98 2004/10/07 16:14:15 olegk Exp $
* $Revision: 1.98 $
* $Date: 2004/10/07 16:14:15 $
*
* ====================================================================
*
* Copyright 1999-2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.commons.httpclient;
import java.io.IOException;
import java.security.Provider;
import java.security.Security;
import org.apache.commons.httpclient.params.HttpClientParams;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* <p>
* An HTTP "user-agent", containing an {@link HttpState HTTP state} and
* one or more {@link HttpConnection HTTP connections}, to which
* {@link HttpMethod HTTP methods} can be applied.
* </p>
* @author <a href="mailto:remm@apache.org">Remy Maucherat</a>
* @author <a href="mailto:rwaldhoff@apache.org">Rodney Waldhoff</a>
* @author Sean C. Sullivan
* @author <a href="mailto:dion@apache.org">dIon Gillard</a>
* @author Ortwin Gl?ck
* @author <a href="mailto:becke@u.washington.edu">Michael Becke</a>
* @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
* @author Sam Maloney
* @author Laura Werner
* @author <a href="mailto:oleg@ural.ru">Oleg Kalnichevski</a>
*
* @version $Revision: 1.98 $ $Date: 2004/10/07 16:14:15 $
*/
public class HttpClient {
// -------------------------------------------------------------- Constants
/** Log object for this class. */
private static final Log LOG = LogFactory.getLog(HttpClient.class);
static {
if (LOG.isDebugEnabled()) {
try {
LOG.debug("Java version: " + System.getProperty("java.version"));
LOG.debug("Java vendor: " + System.getProperty("java.vendor"));
LOG.debug("Java class path: " + System.getProperty("java.class.path"));
LOG.debug("Operating system name: " + System.getProperty("os.name"));
LOG.debug("Operating system architecture: " + System.getProperty("os.arch"));
LOG.debug("Operating system version: " + System.getProperty("os.version"));
Provider[] providers = Security.getProviders();
for (int i = 0; i < providers.length; i++) {
Provider provider = providers[i];
LOG.debug(provider.getName() + " " + provider.getVersion()
+ ": " + provider.getInfo());
}
} catch (SecurityException ignore) {
}
}
}
// ----------------------------------------------------------- Constructors
/**
* Creates an instance of HttpClient using default {@link HttpClientParams parameter set}.
*
* @see HttpClientParams
*/
public HttpClient() {
this(new HttpClientParams());
}
/**
* Creates an instance of HttpClient using the given
* {@link HttpClientParams parameter set}.
*
* @param params The {@link HttpClientParams parameters} to use.
*
* @see HttpClientParams
*
* @since 3.0
*/
public HttpClient(HttpClientParams params) {
super();
if (params == null) {
throw new IllegalArgumentException("Params may not be null");
}
this.params = params;
this.httpConnectionManager = null;
Class clazz = params.getConnectionManagerClass();
if (clazz != null) {
try {
this.httpConnectionManager = (HttpConnectionManager) clazz.newInstance();
} catch (Exception e) {
LOG.warn("Error instantiating connection manager class, defaulting to"
+ " SimpleHttpConnectionManager",
e);
}
}
if (this.httpConnectionManager == null) {
this.httpConnectionManager = new SimpleHttpConnectionManager();
}
if (this.httpConnectionManager != null) {
this.httpConnectionManager.getParams().setDefaults(this.params);
}
}
/**
* Creates an instance of HttpClient with a user specified
* {@link HttpClientParams parameter set} and
* {@link HttpConnectionManager HTTP connection manager}.
*
* @param params The {@link HttpClientParams parameters} to use.
* @param httpConnectionManager The {@link HttpConnectionManager connection manager}
* to use.
*
* @since 3.0
*/
public HttpClient(HttpClientParams params, HttpConnectionManager httpConnectionManager) {
super();
if (httpConnectionManager == null) {
throw new IllegalArgumentException("httpConnectionManager cannot be null");
}
if (params == null) {
throw new IllegalArgumentException("Params may not be null");
}
this.params = params;
this.httpConnectionManager = httpConnectionManager;
if (this.httpConnectionManager != null) {
this.httpConnectionManager.getParams().setDefaults(this.params);
}
}
/**
* Creates an instance of HttpClient with a user specified
* {@link HttpConnectionManager HTTP connection manager}.
*
* @param httpConnectionManager The {@link HttpConnectionManager connection manager}
* to use.
*
* @since 2.0
*/
public HttpClient(HttpConnectionManager httpConnectionManager) {
this(new HttpClientParams(), httpConnectionManager);
}
// ----------------------------------------------------- Instance Variables
/**
* The {@link HttpConnectionManager connection manager} being used to manage
* connections for this HttpClient
*/
private HttpConnectionManager httpConnectionManager;
/**
* The {@link HttpState HTTP state} associated with this HttpClient.
*/
private HttpState state = new HttpState();
/**
* The {@link HttpClientParams collection of parameters} associated with this HttpClient.
*/
private HttpClientParams params = null;
/**
* The {@link HostConfiguration host configuration} associated with
* the HttpClient
*/
private HostConfiguration hostConfiguration = new HostConfiguration();
// ------------------------------------------------------------- Properties
/**
* Returns {@link HttpState HTTP state} associated with the HttpClient.
*
* @see #setState(HttpState)
* @return the shared client state
*/
public synchronized HttpState getState() {
return state;
}
/**
* Assigns {@link HttpState HTTP state} for the HttpClient.
*
* @see #getState()
* @param state the new {@link HttpState HTTP state} for the client
*/
public synchronized void setState(HttpState state) {
this.state = state;
}
/**
* Defines how strictly the method follows the HTTP protocol specification
* (see RFC 2616 and other relevant RFCs).
*
* In the strict mode the method precisely
* implements the requirements of the specification, whereas in non-strict mode
* it attempts to mimic the exact behaviour of commonly used HTTP agents,
* which many HTTP servers expect.
*
* @param strictMode <tt>true</tt> for strict mode, <tt>false</tt> otherwise
*
* @see #isStrictMode()
*
* @deprecated Use {@link HttpClientParams#setParameter(String, Object)}
* to exercise a more granular control over HTTP protocol strictness.
*/
public synchronized void setStrictMode(boolean strictMode) {
if (strictMode) {
this.params.makeStrict();
} else {
this.params.makeLenient();
}
}
/**
* Returns the value of the strict mode flag.
*
* @return <tt>true</tt> if strict mode is enabled, <tt>false</tt> otherwise
*
* @see #setStrictMode(boolean)
*
* @deprecated Use
* {@link org.apache.commons.httpclient.params.HttpClientParams#getParameter(String)}
* to exercise a more granular control over HTTP protocol strictness.
*/
public synchronized boolean isStrictMode() {
return false;
}
/**
* Sets the socket timeout (<tt>SO_TIMEOUT</tt>) in milliseconds which is the
* timeout for waiting for data. A timeout value of zero is interpreted as an
* infinite timeout.
*
* @param newTimeoutInMilliseconds Timeout in milliseconds
*
* @deprecated Use
* {@link org.apache.commons.httpclient.params.HttpConnectionManagerParams#setSoTimeout(int)},
* {@link HttpConnectionManager#getParams()}.
*
*/
public synchronized void setTimeout(int newTimeoutInMilliseconds) {
this.params.setSoTimeout(newTimeoutInMilliseconds);
}
/**
* Sets the timeout in milliseconds used when retrieving an
* {@link HttpConnection HTTP connection} from the
* {@link HttpConnectionManager HTTP connection manager}.
*
* @param timeout the timeout in milliseconds
*
* @see HttpConnectionManager#getConnection(HostConfiguration, long)
*
* @deprecated Use
* {@link org.apache.commons.httpclient.params.HttpClientParams#setConnectionManagerTimeout(long)},
* {@link HttpClient#getParams()}
*/
public synchronized void setHttpConnectionFactoryTimeout(long timeout) {
this.params.setConnectionManagerTimeout(timeout);
}
/**
* Sets the timeout until a connection is etablished. A value of zero
* means the timeout is not used. The default value is zero.
*
* @see HttpConnection#setConnectionTimeout(int)
* @param newTimeoutInMilliseconds Timeout in milliseconds.
*
* @deprecated Use
* {@link org.apache.commons.httpclient.params.HttpConnectionManagerParams#setConnectionTimeout(int)},
* {@link HttpConnectionManager#getParams()}.
*/
public synchronized void setConnectionTimeout(int newTimeoutInMilliseconds) {
this.httpConnectionManager.getParams().setConnectionTimeout(newTimeoutInMilliseconds);
}
// --------------------------------------------------------- Public Methods
/**
* Executes the given {@link HttpMethod HTTP method}.
*
* @param method the {@link HttpMethod HTTP method} to execute.
* @return the method's response code
*
* @throws IOException If an I/O (transport) error occurs. Some transport exceptions
* can be recovered from.
* @throws HttpException If a protocol exception occurs. Usually protocol exceptions
* cannot be recovered from.
*/
public int executeMethod(HttpMethod method)
throws IOException, HttpException {
LOG.trace("enter HttpClient.executeMethod(HttpMethod)");
// execute this method and use its host configuration, if it has one
return executeMethod(null, method, null);
}
/**
* Executes the given {@link HttpMethod HTTP method} using custom
* {@link HostConfiguration host configuration}.
*
* @param hostConfiguration The {@link HostConfiguration host configuration} to use.
* @param method the {@link HttpMethod HTTP method} to execute.
* @return the method's response code
*
* @throws IOException If an I/O (transport) error occurs. Some transport exceptions
* can be recovered from.
* @throws HttpException If a protocol exception occurs. Usually protocol exceptions
* cannot be recovered from.
* @since 2.0
*/
public int executeMethod(final HostConfiguration hostConfiguration, final HttpMethod method)
throws IOException, HttpException {
LOG.trace("enter HttpClient.executeMethod(HostConfiguration,HttpMethod)");
return executeMethod(hostConfiguration, method, null);
}
/**
* Executes the given {@link HttpMethod HTTP method} using the given custom
* {@link HostConfiguration host configuration} with the given custom
* {@link HttpState HTTP state}.
*
* @param hostConfiguration The {@link HostConfiguration host configuration} to use.
* @param method the {@link HttpMethod HTTP method} to execute.
* @param state the {@link HttpState HTTP state} to use when executing the method.
* If <code>null</code>, the state returned by {@link #getState} will be used instead.
*
* @return the method's response code
*
* @throws IOException If an I/O (transport) error occurs. Some transport exceptions
* can be recovered from.
* @throws HttpException If a protocol exception occurs. Usually protocol exceptions
* cannot be recovered from.
* @since 2.0
*/
public int executeMethod(HostConfiguration hostConfiguration,
final HttpMethod method, final HttpState state)
throws IOException, HttpException {
LOG.trace("enter HttpClient.executeMethod(HostConfiguration,HttpMethod,HttpState)");
if (method == null) {
throw new IllegalArgumentException("HttpMethod parameter may not be null");
}
HostConfiguration defaulthostconfig = getHostConfiguration();
if (hostConfiguration == null || hostConfiguration == defaulthostconfig) {
// make a deep copy of the host defaults
hostConfiguration = new HostConfiguration(defaulthostconfig);
URI uri = method.getURI();
if (uri.isAbsoluteURI()) {
hostConfiguration.setHost(uri);
}
}
HttpMethodDirector methodDirector = new HttpMethodDirector(
this.httpConnectionManager,
hostConfiguration,
this.params,
(state == null ? getState() : state));
methodDirector.executeMethod(method);
return method.getStatusCode();
}
/**
* Returns the default host.
*
* @return The default host.
*
* @deprecated use #getHostConfiguration()
*/
public String getHost() {
return hostConfiguration.getHost();
}
/**
* Returns the default port.
*
* @return The default port.
*
* @deprecated use #getHostConfiguration()
*/
public int getPort() {
return hostConfiguration.getPort();
}
/**
* Returns the {@link HostConfiguration host configuration} associated with the
* HttpClient.
*
* @return {@link HostConfiguration host configuration}
*
* @since 2.0
*/
public synchronized HostConfiguration getHostConfiguration() {
return hostConfiguration;
}
/**
* Assigns the {@link HostConfiguration host configuration} to use with the
* HttpClient.
*
* @param hostConfiguration The {@link HostConfiguration host configuration} to set
*
* @since 2.0
*/
public synchronized void setHostConfiguration(HostConfiguration hostConfiguration) {
this.hostConfiguration = hostConfiguration;
}
/**
* Returns the {@link HttpConnectionManager HTTP connection manager} associated
* with the HttpClient.
*
* @return {@link HttpConnectionManager HTTP connection manager}
*
* @since 2.0
*/
public synchronized HttpConnectionManager getHttpConnectionManager() {
return httpConnectionManager;
}
/**
* Assigns the {@link HttpConnectionManager HTTP connection manager} to use with
* the HttpClient.
*
* @param httpConnectionManager The {@link HttpConnectionManager HTTP connection manager}
* to set
*
* @since 2.0
*/
public synchronized void setHttpConnectionManager(
HttpConnectionManager httpConnectionManager
) {
this.httpConnectionManager = httpConnectionManager;
if (this.httpConnectionManager != null) {
this.httpConnectionManager.getParams().setDefaults(this.params);
}
}
/**
* Returns {@link HttpClientParams HTTP protocol parameters} associated with this HttpClient.
*
* @since 3.0
*
* @see HttpClientParams
*/
public HttpClientParams getParams() {
return this.params;
}
/**
* Assigns {@link HttpClientParams HTTP protocol parameters} for this HttpClient.
*
* @since 3.0
*
* @see HttpClientParams
*/
public void setParams(final HttpClientParams params) {
if (params == null) {
throw new IllegalArgumentException("Parameters may not be null");
}
this.params = params;
}
}