[PR #7647/1303350e backport][3.8] Upgrade to llhttp 9.1.3 (#7648)

**This is a backport of PR #7647 as merged into master
(1303350).**

None

Co-authored-by: Sam Bull <[email protected]>

Author: patchback[bot]

aiohttp/_cparser.pxd

@@ -154,3 +154,5 @@ cdef extern from "../vendor/llhttp/build/llhttp.h":
     const char* llhttp_method_name(llhttp_method_t method)
 
     void llhttp_set_lenient_headers(llhttp_t* parser, int enabled)
+    void llhttp_set_lenient_optional_cr_before_lf(llhttp_t* parser, int enabled)
+    void llhttp_set_lenient_spaces_after_chunk_size(llhttp_t* parser, int enabled)

aiohttp/_http_parser.pyx

@@ -652,6 +652,8 @@ cdef class HttpResponseParser(HttpParser):
         # Use strict parsing on dev mode, so users are warned about broken servers.
         if not DEBUG:
             cparser.llhttp_set_lenient_headers(self._cparser, 1)
+            cparser.llhttp_set_lenient_optional_cr_before_lf(self._cparser, 1)
+            cparser.llhttp_set_lenient_spaces_after_chunk_size(self._cparser, 1)
 
     cdef object _on_status_complete(self):
         if self._buf:

aiohttp/http_parser.py

@@ -498,7 +498,7 @@ def parse_headers(
 
             if hdrs.CONTENT_LENGTH in headers:
                 raise BadHttpMessage(
-                    "Content-Length can't be present with Transfer-Encoding",
+                    "Transfer-Encoding can't be present with Content-Length",
                 )
 
         return (headers, raw_headers, close_conn, encoding, upgrade, chunked)

tests/test_http_parser.py

@@ -340,7 +340,7 @@ def test_request_te_chunked_with_content_length(parser: Any) -> None:
     )
     with pytest.raises(
         http_exceptions.BadHttpMessage,
-        match="Content-Length can't be present with Transfer-Encoding",
+        match="Transfer-Encoding can't be present with Content-Length",
     ):
         parser.feed_data(text)