com.unboundid.scim.sdk
Class PreemptiveAuthInterceptor

java.lang.Object
  com.unboundid.scim.sdk.PreemptiveAuthInterceptor

All Implemented Interfaces:

org.apache.http.HttpRequestInterceptor

public class PreemptiveAuthInterceptor
extends Object
implements org.apache.http.HttpRequestInterceptor

This class can be used to configure the Apache Http Client for preemptive authentication. In this mode, the client will send the basic authentication response even before the server gives an unauthorized response in certain situations. This reduces the overhead of making requests over authenticated connections. This behavior conforms to RFC2617: A client MAY preemptively send the corresponding Authorization header with requests for resources in that space without receipt of another challenge from the server. Similarly, when a client sends a request to a proxy, it may reuse a userid and password in the Proxy-Authorization header field without receiving another challenge from the proxy server. The Apache Http Client does not support preemptive authentication out of the box, because if misused or used incorrectly the preemptive authentication can lead to significant security issues, such as sending user credentials in clear text to an unauthorized third party.

Constructor Summary

PreemptiveAuthInterceptor(org.apache.http.auth.AuthScheme authScheme, org.apache.http.auth.Credentials credentials)
Constructs a new PreemptiveAuthInterceptor.

Method Summary

void	process(org.apache.http.HttpRequest request, org.apache.http.protocol.HttpContext context)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PreemptiveAuthInterceptor

public PreemptiveAuthInterceptor(org.apache.http.auth.AuthScheme authScheme,
                                 org.apache.http.auth.Credentials credentials)

Constructs a new PreemptiveAuthInterceptor. It is important that this is added as the first request interceptor in the chain. You can do this by making sure the second parameter is zero when adding the interceptor:

httpClient.addRequestInterceptor( new PreemptiveAuthInterceptor(new BasicScheme(), credentials), 0);

Parameters:

authScheme - The AuthScheme to use. This may not be null.

credentials - The Credentials to use. This may not be null.

Method Detail

process

public void process(org.apache.http.HttpRequest request,
                    org.apache.http.protocol.HttpContext context)
             throws org.apache.http.HttpException,
                    IOException

Specified by:

process in interface org.apache.http.HttpRequestInterceptor

Throws:

org.apache.http.HttpException

IOException