def _do_read(self, length=None, use_readline=False):
if use_readline:
reader = self.rfile.readline
else:
reader = self.rfile.read
content_length = self.content_length
if content_length is None:
# Either Content-Length or "Transfer-Encoding: chunked" must be present in a request with a body
# if it was chunked, then this function would have not been called
return ''
self._send_100_continue()
left = content_length - self.position // left = content_length
if length is None:
length = left
elif length > left:
length = left
if not length:
return ''
read = reader(length)
self.position += len(read)
if len(read) < length:
if (use_readline and not read.endswith("\n")) or not use_readline:
raise IOError("unexpected end of file while reading request at position %s" % (self.position,))
return read
# if content_length > signed int, get error
# You cat inherit the Input class , give the size or length a default value
# you cat give left a value
if left > 2*1024*1024*1024:
left = 2*1024*1024*1024