http://www.bouncycastle.org/java.html: The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 to JDK 1.8. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.
  • The Legion of the Bouncy Castle Inc. 
package org.bouncycastle.est;


import java.io.IOException;


ESTHijacker can take control of the source after the initial http request
has been sent and a response received.
A hijacker is then able to send more request or be able to modify the response before returning a response
to the original caller.


See DigestAuth and BasicAuth.

/**
 * ESTHijacker can take control of the source after the initial http request
 * has been sent and a response received.
 * A hijacker is then able to send more request or be able to modify the response before returning a response
 * to the original caller.
 * <p>
 * See DigestAuth and BasicAuth.
 */
public interface ESTHijacker
{
    ESTResponse hijack(ESTRequest req, Source sock)
        throws IOException;
}