| 1 | #!python
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| 2 | #
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| 3 | # Run with native CPython. Needs pywin32 extensions.
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| 4 |
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| 5 | # Copyright (c) 2011-2012 Ryan Prichard
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| 6 | #
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| 7 | # Permission is hereby granted, free of charge, to any person obtaining a copy
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| 8 | # of this software and associated documentation files (the "Software"), to
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| 9 | # deal in the Software without restriction, including without limitation the
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| 10 | # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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| 11 | # sell copies of the Software, and to permit persons to whom the Software is
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| 12 | # furnished to do so, subject to the following conditions:
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| 13 | #
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| 14 | # The above copyright notice and this permission notice shall be included in
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| 15 | # all copies or substantial portions of the Software.
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| 16 | #
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| 17 | # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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| 18 | # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 19 | # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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| 20 | # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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| 21 | # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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| 22 | # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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| 23 | # IN THE SOFTWARE.
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| 24 |
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| 25 | import win32pipe
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| 26 | import win32api
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| 27 | import win32file
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| 28 | import time
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| 29 | import threading
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| 30 | import sys
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| 31 |
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| 32 | # A message may not be larger than this size.
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| 33 | MSG_SIZE=4096
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| 34 |
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| 35 | serverPipe = win32pipe.CreateNamedPipe(
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| 36 | "\\\\.\\pipe\\DebugServer",
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| 37 | win32pipe.PIPE_ACCESS_DUPLEX,
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| 38 | win32pipe.PIPE_TYPE_MESSAGE | win32pipe.PIPE_READMODE_MESSAGE,
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| 39 | win32pipe.PIPE_UNLIMITED_INSTANCES,
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| 40 | MSG_SIZE,
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| 41 | MSG_SIZE,
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| 42 | 10 * 1000,
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| 43 | None)
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| 44 | while True:
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| 45 | win32pipe.ConnectNamedPipe(serverPipe, None)
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| 46 | (ret, data) = win32file.ReadFile(serverPipe, MSG_SIZE)
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| 47 | print(data.decode())
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| 48 | sys.stdout.flush()
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| 49 |
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| 50 | # The client uses CallNamedPipe to send its message. CallNamedPipe waits
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| 51 | # for a reply message. If I send a reply, however, using WriteFile, then
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| 52 | # sometimes WriteFile fails with:
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| 53 | # pywintypes.error: (232, 'WriteFile', 'The pipe is being closed.')
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| 54 | # I can't figure out how to write a strictly correct pipe server, but if
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| 55 | # I comment out the WriteFile line, then everything seems to work. I
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| 56 | # think the DisconnectNamedPipe call aborts the client's CallNamedPipe
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| 57 | # call normally.
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| 58 |
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| 59 | try:
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| 60 | win32file.WriteFile(serverPipe, b'OK')
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| 61 | except:
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| 62 | pass
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| 63 | win32pipe.DisconnectNamedPipe(serverPipe)
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