def accept(self):
handle = win32.CreateNamedPipeW(
self._path,
win32.PIPE_ACCESS_DUPLEX | win32.FILE_FLAG_OVERLAPPED,
win32.PIPE_TYPE_MESSAGE | win32.PIPE_READMODE_MESSAGE
| win32.PIPE_WAIT, win32.PIPE_UNLIMITED_INSTANCES, _SIZE,
_SIZE, 0, None)
if win32.INVALID_HANDLE_VALUE == handle:
error = win32.GetLastError()
raise win32.create_WindowsError(error)
else:
overlapped = conveyor.connection.PipeConnection.createoverlapped(
)
result = win32.ConnectNamedPipe(handle, overlapped)
if not result:
error = win32.GetLastError()
if win32.ERROR_IO_PENDING == error:
pass
elif win32.ERROR_PIPE_CONNECTED == error:
connection = conveyor.connection.PipeConnection.create(
handle)
return connection
else:
raise win32.create_WindowsError(error)
connection = self._accept_pending(handle, overlapped)
return connection
def write(self, data):
""" writes data over a socket. Loops until either .stop() is set or
data has been sent successfully. Exceptions for flow are handled in
this functions, others are throw upwards.
@param data The data you want to send
"""
with self._condition:
s = str(data)
result = win32.WriteFile(
self._handle, s, len(s), None, self._overlapped_write)
if not result:
error = win32.GetLastError()
if win32.ERROR_BROKEN_PIPE == error:
raise ConnectionWriteException
elif win32.ERROR_IO_PENDING == error:
count = ctypes.wintypes.DWORD()
result = win32.GetOverlappedResult(
self._handle, ctypes.byref(self._overlapped_write),
ctypes.byref(count), True)
if not result:
error = win32.GetLastError()
if win32.ERROR_BROKEN_PIPE == error:
raise ConnectionWriteException
else:
raise win32.create_WindowsError(error)
else:
raise win32.create_WindowsError(error)
def write(self, data):
""" writes data over a socket. Loops until either .stop() is set or
data has been sent successfully. Exceptions for flow are handled in
this functions, others are throw upwards.
@param data The data you want to send
"""
with self._condition:
s = str(data)
result = win32.WriteFile(self._handle, s, len(s), None,
self._overlapped_write)
if not result:
error = win32.GetLastError()
if win32.ERROR_BROKEN_PIPE == error:
raise ConnectionWriteException
elif win32.ERROR_IO_PENDING == error:
count = ctypes.wintypes.DWORD()
result = win32.GetOverlappedResult(
self._handle, ctypes.byref(self._overlapped_write),
ctypes.byref(count), True)
if not result:
error = win32.GetLastError()
if win32.ERROR_BROKEN_PIPE == error:
raise ConnectionWriteException
else:
raise win32.create_WindowsError(error)
else:
raise win32.create_WindowsError(error)
def _read_pending(self, count):
while True:
if self._stopped:
return ''
else:
result = win32.WaitForSingleObject(
self._overlapped_read.hEvent, _TIMEOUT)
if win32.WAIT_TIMEOUT == result:
continue
elif win32.WAIT_OBJECT_0 == result:
result = win32.GetOverlappedResult(
self._handle, ctypes.byref(self._overlapped_read),
ctypes.byref(count), True)
if result:
s = str(self._buffer[:count.value])
return s
else:
error = win32.GetLastError()
if win32.ERROR_BROKEN_PIPE == error:
return ''
elif win32.ERROR_MORE_DATA == error:
s = str(self._buffer[:count.value])
return s
else:
raise win32.create_WindowsError(error)
else:
raise ValueError(result)
def _read_pending(self, count):
while True:
if self._stopped:
return ''
else:
result = win32.WaitForSingleObject(
self._overlapped_read.hEvent, _TIMEOUT)
if win32.WAIT_TIMEOUT == result:
continue
elif win32.WAIT_OBJECT_0 == result:
result = win32.GetOverlappedResult(
self._handle, ctypes.byref(self._overlapped_read),
ctypes.byref(count), True)
if result:
s = str(self._buffer[:count.value])
return s
else:
error = win32.GetLastError()
if win32.ERROR_BROKEN_PIPE == error:
return ''
elif win32.ERROR_MORE_DATA == error:
s = str(self._buffer[:count.value])
return s
else:
raise win32.create_WindowsError(error)
else:
raise ValueError(result)
def read(self):
count = ctypes.wintypes.DWORD()
result = win32.ReadFile(
self._handle, self._buffer, _SIZE, ctypes.byref(count),
ctypes.byref(self._overlapped_read))
if result:
s = str(self._buffer[:count.value])
return s
else:
error = win32.GetLastError()
if win32.ERROR_BROKEN_PIPE == error:
return ''
elif win32.ERROR_MORE_DATA == error:
s = str(self._buffer[:count.value])
return s
elif win32.ERROR_IO_PENDING == error:
s = self._read_pending(count)
return s
else:
raise win32.create_WindowsError(error)
def read(self):
count = ctypes.wintypes.DWORD()
result = win32.ReadFile(self._handle, self._buffer, _SIZE,
ctypes.byref(count),
ctypes.byref(self._overlapped_read))
if result:
s = str(self._buffer[:count.value])
return s
else:
error = win32.GetLastError()
if win32.ERROR_BROKEN_PIPE == error:
return ''
elif win32.ERROR_MORE_DATA == error:
s = str(self._buffer[:count.value])
return s
elif win32.ERROR_IO_PENDING == error:
s = self._read_pending(count)
return s
else:
raise win32.create_WindowsError(error)
