def _pipe_read(self, buf):
read = c_ulong(0)
r = ReadFile(self.pipe_handle, self.read_buffer_ptr, BUFSIZE,
byref(read), byref(self.read_overlapped))
log("ReadFile(..)=%i, len=%s", r, read.value)
if not r and self.pipe_handle:
e = GetLastError()
if e != ERROR_IO_PENDING:
log("ReadFile: %s", IO_ERROR_STR.get(e, e))
r = WaitForSingleObject(self.read_event, INFINITE)
log("WaitForSingleObject(..)=%s, len=%s", WAIT_STR.get(r, r),
read.value)
if r and self.pipe_handle:
raise Exception("failed to read from named pipe handle %s" %
self.pipe_handle)
if self.pipe_handle:
if not GetOverlappedResult(self.pipe_handle,
byref(self.read_overlapped),
byref(read), False):
e = GetLastError()
if e != ERROR_BROKEN_PIPE:
raise Exception("overlapped read failed: %s" %
IO_ERROR_STR.get(e, e))
if read.value == 0:
data = None
else:
data = string_at(self.read_buffer_ptr, read.value)
log("pipe_read: %i bytes", len(data or "")) #, binascii.hexlify(s))
return data
def _pipe_read(self, n):
read = c_ulong(0)
n_bytes = DWORD(min(n, BUFSIZE))
r = ReadFile(self.pipe_handle, self.read_buffer_ptr, n_bytes, byref(read), byref(self.read_overlapped))
log("ReadFile(%i)=%i, len=%s", n, r, read.value)
if not r and self.pipe_handle:
e = GetLastError()
if e!=ERROR_IO_PENDING:
log("ReadFile: %s", IO_ERROR_STR.get(e, e))
if e in CONNECTION_CLOSED_ERRORS:
raise ConnectionClosedException(CONNECTION_CLOSED_ERRORS[e])
r = WaitForSingleObject(self.read_event, INFINITE)
log("WaitForSingleObject(..)=%s, len=%s", WAIT_STR.get(r, r), read.value)
if r and self.pipe_handle:
raise Exception("failed to read from named pipe handle %s" % self.pipe_handle)
if self.pipe_handle:
if not GetOverlappedResult(self.pipe_handle, byref(self.read_overlapped), byref(read), False):
e = GetLastError()
if e in CONNECTION_CLOSED_ERRORS:
raise ConnectionClosedException(CONNECTION_CLOSED_ERRORS[e])
raise Exception("overlapped read failed: %s" % IO_ERROR_STR.get(e, e))
if read.value==0:
data = None
else:
data = string_at(self.read_buffer_ptr, read.value)
log("pipe_read: %i bytes", len(data or "")) #, binascii.hexlify(s))
return data