def PipeClient(address):
'''
Return a connection object connected to the pipe given by `address`
'''
t = _init_timeout()
while 1:
try:
_winapi.WaitNamedPipe(address, 1000)
h = _winapi.CreateFile(
address, _winapi.GENERIC_READ | _winapi.GENERIC_WRITE, 0,
_winapi.NULL, _winapi.OPEN_EXISTING,
_winapi.FILE_FLAG_OVERLAPPED, _winapi.NULL)
except OSError as e:
if e.winerror not in (
_winapi.ERROR_SEM_TIMEOUT,
_winapi.ERROR_PIPE_BUSY) or _check_timeout(t):
raise
else:
break
else:
raise
_winapi.SetNamedPipeHandleState(h, _winapi.PIPE_READMODE_MESSAGE, None,
None)
return PipeConnection(h)
def __init__(self, name: str, timeout: Optional[float]) -> None:
super().__init__(name, timeout)
if sys.platform == 'win32':
timeout = int(
self.timeout *
1000) if self.timeout else _winapi.NMPWAIT_WAIT_FOREVER
try:
_winapi.WaitNamedPipe(self.name, timeout)
except FileNotFoundError as e:
raise IPCException(
f"The NamedPipe at {self.name} was not found.") from e
except OSError as e:
if e.winerror == _winapi.ERROR_SEM_TIMEOUT:
raise IPCException(
"Timed out waiting for connection.") from e
else:
raise
try:
self.connection = _winapi.CreateFile(
self.name,
_winapi.GENERIC_READ | _winapi.GENERIC_WRITE,
0,
_winapi.NULL,
_winapi.OPEN_EXISTING,
_winapi.FILE_FLAG_OVERLAPPED,
_winapi.NULL,
)
except OSError as e:
if e.winerror == _winapi.ERROR_PIPE_BUSY:
raise IPCException("The connection is busy.") from e
else:
raise
_winapi.SetNamedPipeHandleState(self.connection,
_winapi.PIPE_READMODE_MESSAGE,
None, None)
else:
self.connection = socket.socket(socket.AF_UNIX)
self.connection.settimeout(timeout)
self.connection.connect(name)
def __init__(self, name: str, timeout: Optional[int]) -> None:
super().__init__(name)
if sys.platform == 'win32':
timeout = timeout or 0xFFFFFFFF # NMPWAIT_WAIT_FOREVER
try:
_winapi.WaitNamedPipe(self.name, timeout)
except FileNotFoundError:
raise IPCException("The NamedPipe at {} was not found.".format(self.name))
except WindowsError as e:
if e.winerror == _winapi.ERROR_SEM_TIMEOUT:
raise IPCException("Timed out waiting for connection.")
else:
raise
try:
self.connection = _winapi.CreateFile(
self.name,
_winapi.GENERIC_READ | _winapi.GENERIC_WRITE,
0,
_winapi.NULL,
_winapi.OPEN_EXISTING,
0,
_winapi.NULL,
)
except WindowsError as e:
if e.winerror == _winapi.ERROR_PIPE_BUSY:
raise IPCException("The connection is busy.")
else:
raise
_winapi.SetNamedPipeHandleState(self.connection,
_winapi.PIPE_READMODE_MESSAGE,
None,
None)
else:
self.connection = socket.socket(socket.AF_UNIX)
self.connection.settimeout(timeout)
self.connection.connect(name)