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ORPA-pyOpenRPA/WPy32-3720/python-3.7.2/Lib/site-packages/isapi/samples
Ivan Maslov 4aa0aa75b4
v1.0.0 prototype
6 years ago
..
__pycache__ v1.0.0 prototype 6 years ago
README.txt v1.0.0 prototype 6 years ago
advanced.py v1.0.0 prototype 6 years ago
redirector.py v1.0.0 prototype 6 years ago
redirector_asynch.py v1.0.0 prototype 6 years ago
redirector_with_filter.py v1.0.0 prototype 6 years ago
test.py v1.0.0 prototype 6 years ago

README.txt

In this directory you will find examples of ISAPI filters and extensions.

The filter loading mechanism works like this:
* IIS loads the special Python "loader" DLL.  This DLL will generally have a 
  leading underscore as part of its name.
* This loader DLL looks for a Python module, by removing the first letter of
  the DLL base name.
  
This means that an ISAPI extension module consists of 2 key files - the loader
DLL (eg, "_MyIISModule.dll", and a Python module (which for this example
would be "MyIISModule.py")

When you install an ISAPI extension, the installation code checks to see if
there is a loader DLL for your implementation file - if one does not exist, 
or the standard loader is different, it is copied and renamed accordingly.

We use this mechanism to provide the maximum separation between different
Python extensions installed on the same server - otherwise filter order and
other tricky IIS semantics would need to be replicated.  Also, each filter
gets its own thread-pool, etc.