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package com.sun.jersey.client.apache.config;

import com.sun.jersey.api.client.config.ClientConfig;
import com.sun.jersey.client.apache.ApacheHttpClient;
import com.sun.jersey.client.apache.ApacheHttpClientHandler;

/**
 * Configuration options specific to the Client API that utilizes
 * {@link ApacheHttpClient} or {@link ApacheHttpClientHandler}.
 *
 * @author [email protected]
 * @author [email protected]
 */
public interface ApacheHttpClientConfig extends ClientConfig {

    /**
     * A value of "true" indicates that the client should
     * interactively prompt for credentials should it receive a 401
     * response.
     *
     * The value MUST be an instance of {@link java.lang.Boolean}.
     * If the property is absent the default value is "false"
     */
    public static final String PROPERTY_INTERACTIVE =
            "com.sun.jersey.impl.client.httpclient.interactive";

    /**
     * A value of "true" indicates the client should handle cookies
     * automatically using HttpClient's default cookie policy. A value
     * of "false" will cause the client to ignore all cookies.
     *
     * The value MUST be an instance of {@link java.lang.Boolean}.
     * If the property is absent the default value is "false"
     */
    public static final String PROPERTY_HANDLE_COOKIES =
            "com.sun.jersey.impl.client.httpclient.handleCookies";

    /**
     * The credential provider that should be used to retrieve
     * credentials from a user. The provider will be used only if
     * {@link #PROPERTY_INTERACTIVE} is set to true.
     *
     * The value MUST be an instance of {@link
     * org.apache.commons.httpclient.auth.CredentialsProvider}.  If
     * the property is absent a default provider will be used.
     */
    public static final String PROPERTY_CREDENTIALS_PROVIDER =
            "com.sun.jersey.impl.client.httpclient.credentialsProvider";

    /**
     * A value of "true" indicates that a client should send an
     * authentication request even before the server gives a 401
     * response.
     *
     * This property may only be set when constructing a {@link ApacheHttpClient}
     * instance.
     *
     * If the value of this property is set to "true" default
     * credientials must be set for the target or proxy.
     *
     * The value MUST be an instance of {@link java.lang.Boolean}.
     * If the property is absent the default value is "false"
     */
    public static final String PROPERTY_PREEMPTIVE_AUTHENTICATION =
            "com.sun.jersey.impl.client.httpclient.preemptiveAuthentication";

    /**
     * A value of a URI to configure the proxy host and proxy port to proxy
     * HTTP requests and responses. If the port component of the URI is absent
     * then a default port of 8080 be selected.
     *
     * The value MUST be an instance of {@link String} or {@link java.net.URI}.
     * If the property absent then no proxy will be utilized.
     */
    public static final String PROPERTY_PROXY_URI =
            "com.sun.jersey.impl.client.httpclient.proxyURI";

    /**
     * The {@link ApacheHttpClientState} of the current client. 
     * This is used to maintain authentication credentials.
     *
     * The value MUST be an instance of {@link ApacheHttpClientState}.
     */
    public static final String PROPERTY_HTTP_STATE =
            "com.sun.jersey.impl.client.httpclient.httpState";

    /**
     * Get the HTTP state. Credentials may be set on the HTTP state.
     * 
     * If no state exists then an instance is created and added
     * as the property {@link #PROPERTY_HTTP_STATE}.
     *
     * @return the HTTP state.
     */
    public ApacheHttpClientState getState();
}