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diff --git a/src/org/apache/http/auth/AuthScope.java b/src/org/apache/http/auth/AuthScope.java
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+/*
+ * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/auth/AuthScope.java $
+ * $Revision: 652950 $
+ * $Date: 2008-05-02 16:49:48 -0700 (Fri, 02 May 2008) $
+ *
+ * ====================================================================
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.http.auth;
+
+import java.util.Locale;
+
+import org.apache.http.util.LangUtils;
+
+/**
+ * The class represents an authentication scope consisting of a host name,
+ * a port number, a realm name and an authentication scheme name which
+ * {@link Credentials Credentials} apply to.
+ *
+ * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
+ * @author <a href="mailto:adrian@intencha.com">Adrian Sutton</a>
+ *
+ * @since 4.0
+ */
+public class AuthScope {
+
+ /**
+ * The <tt>null</tt> value represents any host. In the future versions of
+ * HttpClient the use of this parameter will be discontinued.
+ */
+ public static final String ANY_HOST = null;
+
+ /**
+ * The <tt>-1</tt> value represents any port.
+ */
+ public static final int ANY_PORT = -1;
+
+ /**
+ * The <tt>null</tt> value represents any realm.
+ */
+ public static final String ANY_REALM = null;
+
+ /**
+ * The <tt>null</tt> value represents any authentication scheme.
+ */
+ public static final String ANY_SCHEME = null;
+
+ /**
+ * Default scope matching any host, port, realm and authentication scheme.
+ * In the future versions of HttpClient the use of this parameter will be
+ * discontinued.
+ */
+ public static final AuthScope ANY = new AuthScope(ANY_HOST, ANY_PORT, ANY_REALM, ANY_SCHEME);
+
+ /** The authentication scheme the credentials apply to. */
+ private final String scheme;
+
+ /** The realm the credentials apply to. */
+ private final String realm;
+
+ /** The host the credentials apply to. */
+ private final String host;
+
+ /** The port the credentials apply to. */
+ private final int port;
+
+ /** Creates a new credentials scope for the given
+ * <tt>host</tt>, <tt>port</tt>, <tt>realm</tt>, and
+ * <tt>authentication scheme</tt>.
+ *
+ * @param host the host the credentials apply to. May be set
+ * to <tt>null</tt> if credenticals are applicable to
+ * any host.
+ * @param port the port the credentials apply to. May be set
+ * to negative value if credenticals are applicable to
+ * any port.
+ * @param realm the realm the credentials apply to. May be set
+ * to <tt>null</tt> if credenticals are applicable to
+ * any realm.
+ * @param scheme the authentication scheme the credentials apply to.
+ * May be set to <tt>null</tt> if credenticals are applicable to
+ * any authentication scheme.
+ */
+ public AuthScope(final String host, int port,
+ final String realm, final String scheme)
+ {
+ this.host = (host == null) ? ANY_HOST: host.toLowerCase(Locale.ENGLISH);
+ this.port = (port < 0) ? ANY_PORT: port;
+ this.realm = (realm == null) ? ANY_REALM: realm;
+ this.scheme = (scheme == null) ? ANY_SCHEME: scheme.toUpperCase(Locale.ENGLISH);
+ }
+
+ /** Creates a new credentials scope for the given
+ * <tt>host</tt>, <tt>port</tt>, <tt>realm</tt>, and any
+ * authentication scheme.
+ *
+ * @param host the host the credentials apply to. May be set
+ * to <tt>null</tt> if credenticals are applicable to
+ * any host.
+ * @param port the port the credentials apply to. May be set
+ * to negative value if credenticals are applicable to
+ * any port.
+ * @param realm the realm the credentials apply to. May be set
+ * to <tt>null</tt> if credenticals are applicable to
+ * any realm.
+ */
+ public AuthScope(final String host, int port, final String realm) {
+ this(host, port, realm, ANY_SCHEME);
+ }
+
+ /** Creates a new credentials scope for the given
+ * <tt>host</tt>, <tt>port</tt>, any realm name, and any
+ * authentication scheme.
+ *
+ * @param host the host the credentials apply to. May be set
+ * to <tt>null</tt> if credenticals are applicable to
+ * any host.
+ * @param port the port the credentials apply to. May be set
+ * to negative value if credenticals are applicable to
+ * any port.
+ */
+ public AuthScope(final String host, int port) {
+ this(host, port, ANY_REALM, ANY_SCHEME);
+ }
+
+ /**
+ * Creates a copy of the given credentials scope.
+ */
+ public AuthScope(final AuthScope authscope) {
+ super();
+ if (authscope == null) {
+ throw new IllegalArgumentException("Scope may not be null");
+ }
+ this.host = authscope.getHost();
+ this.port = authscope.getPort();
+ this.realm = authscope.getRealm();
+ this.scheme = authscope.getScheme();
+ }
+
+ /**
+ * @return the host
+ */
+ public String getHost() {
+ return this.host;
+ }
+
+ /**
+ * @return the port
+ */
+ public int getPort() {
+ return this.port;
+ }
+
+ /**
+ * @return the realm name
+ */
+ public String getRealm() {
+ return this.realm;
+ }
+
+ /**
+ * @return the scheme type
+ */
+ public String getScheme() {
+ return this.scheme;
+ }
+
+ /**
+ * Tests if the authentication scopes match.
+ *
+ * @return the match factor. Negative value signifies no match.
+ * Non-negative signifies a match. The greater the returned value
+ * the closer the match.
+ */
+ public int match(final AuthScope that) {
+ int factor = 0;
+ if (LangUtils.equals(this.scheme, that.scheme)) {
+ factor += 1;
+ } else {
+ if (this.scheme != ANY_SCHEME && that.scheme != ANY_SCHEME) {
+ return -1;
+ }
+ }
+ if (LangUtils.equals(this.realm, that.realm)) {
+ factor += 2;
+ } else {
+ if (this.realm != ANY_REALM && that.realm != ANY_REALM) {
+ return -1;
+ }
+ }
+ if (this.port == that.port) {
+ factor += 4;
+ } else {
+ if (this.port != ANY_PORT && that.port != ANY_PORT) {
+ return -1;
+ }
+ }
+ if (LangUtils.equals(this.host, that.host)) {
+ factor += 8;
+ } else {
+ if (this.host != ANY_HOST && that.host != ANY_HOST) {
+ return -1;
+ }
+ }
+ return factor;
+ }
+
+ /**
+ * @see java.lang.Object#equals(Object)
+ */
+ @Override
+ public boolean equals(Object o) {
+ if (o == null) {
+ return false;
+ }
+ if (o == this) {
+ return true;
+ }
+ if (!(o instanceof AuthScope)) {
+ return super.equals(o);
+ }
+ AuthScope that = (AuthScope) o;
+ return
+ LangUtils.equals(this.host, that.host)
+ && this.port == that.port
+ && LangUtils.equals(this.realm, that.realm)
+ && LangUtils.equals(this.scheme, that.scheme);
+ }
+
+ /**
+ * @see java.lang.Object#toString()
+ */
+ @Override
+ public String toString() {
+ StringBuffer buffer = new StringBuffer();
+ if (this.scheme != null) {
+ buffer.append(this.scheme.toUpperCase(Locale.ENGLISH));
+ buffer.append(' ');
+ }
+ if (this.realm != null) {
+ buffer.append('\'');
+ buffer.append(this.realm);
+ buffer.append('\'');
+ } else {
+ buffer.append("<any realm>");
+ }
+ if (this.host != null) {
+ buffer.append('@');
+ buffer.append(this.host);
+ if (this.port >= 0) {
+ buffer.append(':');
+ buffer.append(this.port);
+ }
+ }
+ return buffer.toString();
+ }
+
+ /**
+ * @see java.lang.Object#hashCode()
+ */
+ @Override
+ public int hashCode() {
+ int hash = LangUtils.HASH_SEED;
+ hash = LangUtils.hashCode(hash, this.host);
+ hash = LangUtils.hashCode(hash, this.port);
+ hash = LangUtils.hashCode(hash, this.realm);
+ hash = LangUtils.hashCode(hash, this.scheme);
+ return hash;
+ }
+}
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