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21 lines
1007 B
21 lines
1007 B
In this directory you will find examples of ISAPI filters and extensions.
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The filter loading mechanism works like this:
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* IIS loads the special Python "loader" DLL. This DLL will generally have a
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leading underscore as part of its name.
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* This loader DLL looks for a Python module, by removing the first letter of
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the DLL base name.
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This means that an ISAPI extension module consists of 2 key files - the loader
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DLL (eg, "_MyIISModule.dll", and a Python module (which for this example
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would be "MyIISModule.py")
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When you install an ISAPI extension, the installation code checks to see if
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there is a loader DLL for your implementation file - if one does not exist,
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or the standard loader is different, it is copied and renamed accordingly.
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We use this mechanism to provide the maximum separation between different
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Python extensions installed on the same server - otherwise filter order and
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other tricky IIS semantics would need to be replicated. Also, each filter
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gets its own thread-pool, etc.
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