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the middleware now also triggers when Content-Length is '0' but X-Amz-Decoded-Content-Length or aws-chunked headers indicate a body should be present

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kqjy
2026-03-22 00:24:04 +08:00
parent 7612cb054a
commit 366f8ce60d
1 changed files with 20 additions and 15 deletions
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35
app/__init__.py
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@@ -51,21 +51,26 @@ class _ChunkedTransferMiddleware:
self.app = app self.app = app
def __call__(self, environ, start_response): def __call__(self, environ, start_response):
has_content_length = environ.get("CONTENT_LENGTH") if environ.get("REQUEST_METHOD") not in ("PUT", "POST"):
if not has_content_length and environ.get("REQUEST_METHOD") in ("PUT", "POST"): return self.app(environ, start_response)
transfer_chunked = "chunked" in environ.get("HTTP_TRANSFER_ENCODING", "").lower()
has_body_hint = bool(environ.get("HTTP_X_AMZ_DECODED_CONTENT_LENGTH")) content_length = environ.get("CONTENT_LENGTH")
content_encoding = environ.get("HTTP_CONTENT_ENCODING", "") body_expected = (
has_aws_chunked = "aws-chunked" in content_encoding.lower() environ.get("HTTP_X_AMZ_DECODED_CONTENT_LENGTH")
if transfer_chunked or has_body_hint or has_aws_chunked: or "chunked" in environ.get("HTTP_TRANSFER_ENCODING", "").lower()
try: or "aws-chunked" in environ.get("HTTP_CONTENT_ENCODING", "").lower()
raw = environ["wsgi.input"] )
body = raw.read()
except Exception: if body_expected and (not content_length or content_length == "0"):
body = b"" try:
if body: raw = environ["wsgi.input"]
environ["wsgi.input"] = io.BytesIO(body) body = raw.read()
environ["CONTENT_LENGTH"] = str(len(body)) except Exception:
body = b""
if body:
environ["wsgi.input"] = io.BytesIO(body)
environ["CONTENT_LENGTH"] = str(len(body))
return self.app(environ, start_response) return self.app(environ, start_response)