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Fix Python parser to mark responses without length as closing #8320

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merged 4 commits into from
Apr 11, 2024
Merged

Fix Python parser to mark responses without length as closing #8320

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0d1987b
Fix Python parser to mark responses without length as closing
Dreamsorcerer Apr 11, 2024
3cf56cc
Create 8320.bugfix.rest
Dreamsorcerer Apr 11, 2024
71512d3
Rename 8320.bugfix.rest to 8320.bugfix.rst
Dreamsorcerer Apr 11, 2024
1ea53e2
Update aiohttp/http_parser.py
Dreamsorcerer Apr 11, 2024
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1 change: 1 addition & 0 deletions CHANGES/8320.bugfix.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Fixed the pure python parser to mark a connection as closing when a response has no length -- by :user:`Dreamsorcerer`.
11 changes: 10 additions & 1 deletion aiohttp/http_parser.py
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Expand Up @@ -706,7 +706,16 @@ def parse_message(self, lines: List[bytes]) -> RawResponseMessage:
) = self.parse_headers(lines)

if close is None:
close = version_o <= HttpVersion10
if version_o <= HttpVersion10:
close = True
# https://www.rfc-editor.org/rfc/rfc9112.html#name-message-body-length
elif 100 <= status_i < 200 or status_i in {204, 304}:
close = False
elif hdrs.CONTENT_LENGTH in headers or hdrs.TRANSFER_ENCODING in headers:
close = False
else:
# https://www.rfc-editor.org/rfc/rfc9112.html#section-6.3-2.8
close = True

return RawResponseMessage(
version_o,
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2 changes: 1 addition & 1 deletion tests/test_http_parser.py
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Expand Up @@ -744,7 +744,7 @@ def test_max_header_value_size_continuation_under_limit(response: Any) -> None:
assert msg.version == (1, 1)
assert msg.headers == CIMultiDict({"data": "test " + value.decode()})
assert msg.raw_headers == ((b"data", b"test " + value),)
# assert not msg.should_close # TODO: https://github.com/nodejs/llhttp/issues/354
assert msg.should_close
assert msg.compression is None
assert not msg.upgrade
assert not msg.chunked
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