fix upload large file DiskFile not work bug

vibora/multipart/parser.pyx

@@ -85,6 +85,11 @@ cdef class MemoryFile(UploadedFile):
 
 
 cdef class DiskFile(UploadedFile):
+ cdef:
+ str temporary_path
+ int pointer
+ bint delete_on_exit
+
  def __init__(self, filename=None, temporary_dir=None):
  super().__init__(filename=filename)
  self.temporary_path = os.path.join(temporary_dir or gettempdir(), str(uuid.uuid4()))
@@ -156,16 +161,19 @@ cdef class SmartFile:
  :return: 
  """
  cdef int data_size = len(data)
+
  if self.in_memory:
  if len(self.buffer) + data_size > self.in_memory_limit:
  self.engine = DiskFile(filename=self.filename, temporary_dir=self.temp_dir)
- self.engine.write(self.buffer)
+ if len(self.buffer) > 0:
+ await self.engine.write(bytes(self.buffer))
  self.in_memory = False
  else:
  self.buffer.extend(data)
  self.pointer += data_size
- else:
- self.engine.write(data)
+
+ if self.in_memory is False:
+ await self.engine.write(bytes(data))
 
  cdef object consume(self):
  """