The final processing of every Chain ends in a call to a Handler. A Handler can simply call another Chain or it can send the request on to the target application. The following Handlers are shipped with OpenIG:
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ClientHandler: Sends the final request to the target application.
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StaticResponseHandler: Used to send a response, such as a redirect, to a client during request processing.
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SequenceHandler: Links together multiple handlers or chains during request processing.
