updates

Backend/venv/lib/python3.12/site-packages/h11/_readers.py

@@ -148,9 +148,10 @@ chunk_header_re = re.compile(chunk_header.encode("ascii"))
 class ChunkedReader:
     def __init__(self) -> None:
         self._bytes_in_chunk = 0
-        # After reading a chunk, we have to throw away the trailing \r\n.
-        # This tracks the bytes that we need to match and throw away.
-        self._bytes_to_discard = b""
+        # After reading a chunk, we have to throw away the trailing \r\n; if
+        # this is >0 then we discard that many bytes before resuming regular
+        # de-chunkification.
+        self._bytes_to_discard = 0
         self._reading_trailer = False
 
     def __call__(self, buf: ReceiveBuffer) -> Union[Data, EndOfMessage, None]:
@@ -159,19 +160,15 @@ class ChunkedReader:
             if lines is None:
                 return None
             return EndOfMessage(headers=list(_decode_header_lines(lines)))
-        if self._bytes_to_discard:
-            data = buf.maybe_extract_at_most(len(self._bytes_to_discard))
+        if self._bytes_to_discard > 0:
+            data = buf.maybe_extract_at_most(self._bytes_to_discard)
             if data is None:
                 return None
-            if data != self._bytes_to_discard[: len(data)]:
-                raise LocalProtocolError(
-                    f"malformed chunk footer: {data!r} (expected {self._bytes_to_discard!r})"
-                )
-            self._bytes_to_discard = self._bytes_to_discard[len(data) :]
-            if self._bytes_to_discard:
+            self._bytes_to_discard -= len(data)
+            if self._bytes_to_discard > 0:
                 return None
             # else, fall through and read some more
-        assert self._bytes_to_discard == b""
+        assert self._bytes_to_discard == 0
         if self._bytes_in_chunk == 0:
             # We need to refill our chunk count
             chunk_header = buf.maybe_extract_next_line()
@@ -197,7 +194,7 @@ class ChunkedReader:
             return None
         self._bytes_in_chunk -= len(data)
         if self._bytes_in_chunk == 0:
-            self._bytes_to_discard = b"\r\n"
+            self._bytes_to_discard = 2
             chunk_end = True
         else:
             chunk_end = False