J. Peng wrote:
At what cases should we return a DECLINED or a OK from a handler?
I saw the handler of PerlTransHandler returns a
Apache2::Const::DECLINED but dont know why.

see the introduction to part III here:

  http://www.modperlcookbook.org/chapters.html

in general, trans handlers return DECLINED because they don't typically do sufficient mapping of a uri to a resource on disk - they usually alter the uri then let the default apache trans handler do the mapping.

--Geoff

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