001// ***************************************************************************************************************************
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006// *                                                                                                                         *
007// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
008// *                                                                                                                         *
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011// * specific language governing permissions and limitations under the License.                                              *
012// ***************************************************************************************************************************
013package org.apache.juneau.http.header;
014
015import java.util.function.*;
016
017import org.apache.juneau.http.annotation.*;
018
019/**
020 * Represents a parsed <l>Proxy-Authorization</l> HTTP request header.
021 *
022 * <p>
023 * Authorization credentials for connecting to a proxy.
024 *
025 * <h5 class='figure'>Example</h5>
026 * <p class='bcode w800'>
027 *    Proxy-Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==
028 * </p>
029 *
030 * <h5 class='topic'>RFC2616 Specification</h5>
031 *
032 * The Proxy-Authorization request-header field allows the client to identify itself (or its user) to a proxy which
033 * requires authentication.
034 * The Proxy-Authorization field value consists of credentials containing the authentication information of the user
035 * agent for the proxy and/or realm of the resource being requested.
036 *
037 * <p class='bcode w800'>
038 *    Proxy-Authorization     = "Proxy-Authorization" ":" credentials
039 * </p>
040 *
041 * <p>
042 * The HTTP access authentication process is described in "HTTP Authentication: Basic and Digest Access Authentication".
043 * Unlike Authorization, the Proxy-Authorization header field applies only to the next outbound proxy that demanded
044 * authentication using the Proxy-Authenticate field.
045 * When multiple proxies are used in a chain, the Proxy-Authorization header field is consumed by the first outbound
046 * proxy that was expecting to receive credentials.
047 * A proxy MAY relay the credentials from the client request to the next proxy if that is the mechanism by which the
048 * proxies cooperatively authenticate a given request.
049 *
050 * <ul class='seealso'>
051 *    <li class='extlink'>{@doc ExtRFC2616}
052 * </ul>
053 */
054@Header("Proxy-Authorization")
055public class ProxyAuthorization extends BasicStringHeader {
056
057   private static final long serialVersionUID = 1L;
058
059   /**
060    * Convenience creator.
061    *
062    * @param value
063    *    The header value.
064    *    <br>Can be any of the following:
065    *    <ul>
066    *       <li>{@link String}
067    *       <li>Anything else - Converted to <c>String</c> then parsed.
068    *    </ul>
069    * @return A new {@link ProxyAuthorization} object.
070    */
071   public static ProxyAuthorization of(Object value) {
072      if (value == null)
073         return null;
074      return new ProxyAuthorization(value);
075   }
076
077   /**
078    * Convenience creator using supplier.
079    *
080    * <p>
081    * Header value is re-evaluated on each call to {@link #getValue()}.
082    *
083    * @param value
084    *    The header value supplier.
085    *    <br>Can be any of the following:
086    *    <ul>
087    *       <li>{@link String}
088    *       <li>Anything else - Converted to <c>String</c> then parsed.
089    *    </ul>
090    * @return A new {@link ProxyAuthorization} object.
091    */
092   public static ProxyAuthorization of(Supplier<?> value) {
093      if (value == null)
094         return null;
095      return new ProxyAuthorization(value);
096   }
097
098   /**
099    * Constructor.
100    *
101    * @param value
102    *    The header value.
103    *    <br>Can be any of the following:
104    *    <ul>
105    *       <li>{@link String}
106    *       <li>Anything else - Converted to <c>String</c> then parsed.
107    *       <li>A {@link Supplier} of anything on this list.
108    *    </ul>
109    */
110   public ProxyAuthorization(Object value) {
111      super("Proxy-Authorization", value);
112   }
113
114   /**
115    * Constructor
116    *
117    * @param value
118    *    The header value.
119    */
120   public ProxyAuthorization(String value) {
121      this((Object)value);
122   }
123}