On 9/24/2010 12:53 AM, antoine wrote:
Hello,
I would like to create a python server for which the requests are
passed by files on the hard drive instead of a network.
I am currently looking at the SocketServer python module, hoping for
an easy modification.
Is it doable at all?
If yes, how should it be done?
Thanks,
Antoine.
Yes, it can be done. But why?
ICVERIFY, the first web-based credit card processing system,
worked that way. Remember web sites which put up messages
like "Wait up to 3 minutes for your credit card transaction to
be processed. DO NOT REFRESH THIS PAGE". That's ICverify.
The ICVERIFY concept was that the client-facing side created files
in an input directory, then waited for response files to appear.
The back end drove a farm of dial-up modems, each emulating a
1200 baud credit card terminal. Each back-end process looked
for incoming work files, marked them as in use, dialed up
the credit card processing system, did the transaction, and
wrote a response file. All the process coordination was
through files.
That was 1995 technology, before the banking system had
direct Internet connections.
John Nagle
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