DNM: Add a Cython implementation for ConnectionKey with hash caching

aiohttp/_client_reqrep.pyx

@@ -0,0 +1,36 @@
+cdef class ConnectionKey:
+
+    cdef readonly str host
+    cdef readonly object port
+    cdef readonly bint is_ssl
+    cdef readonly object ssl
+    cdef readonly object proxy
+    cdef readonly object proxy_auth
+    cdef readonly object proxy_headers_hash
+    cdef readonly Py_hash_t _hash
+
+    def __init__(self, host, port, is_ssl, ssl, proxy, proxy_auth, proxy_headers_hash):
+        self.host = host
+        self.port = port
+        self.is_ssl = is_ssl
+        self.ssl = ssl
+        self.proxy = proxy
+        self.proxy_auth = proxy_auth
+        self.proxy_headers_hash = proxy_headers_hash
+        self._hash = hash((host, port, is_ssl, ssl, proxy, proxy_auth, proxy_headers_hash))
+
+    def __hash__(self):
+        return self._hash
+
+    def __eq__(self, other: ConnectionKey):
+        if not isinstance(other, ConnectionKey):
+            return NotImplemented
+        return (
+            self.host == other.host and
+            self.port == other.port and
+            self.is_ssl == other.is_ssl and
+            self.ssl == other.ssl and
+            self.proxy == other.proxy and
+            self.proxy_auth == other.proxy_auth and
+            self.proxy_headers_hash == other.proxy_headers_hash
+        )

aiohttp/client_reqrep.py

@@ -43,6 +43,7 @@
 from .hdrs import CONTENT_TYPE
 from .helpers import (
     _SENTINEL,
+    NO_EXTENSIONS,
     BaseTimerContext,
     BasicAuth,
     HeadersMixin,
@@ -1239,3 +1240,16 @@ async def __aexit__(
         # if state is broken
         self.release()
         await self.wait_for_close()
+
+
+RawResponseMessagePy = ConnectionKey
+
+try:
+    if not NO_EXTENSIONS:
+        from ._client_repreq import (  # type: ignore[import-not-found,no-redef]
+            ConnectionKey,
+        )
+
+        ConnectionKeyC = ConnectionKey
+except ImportError:  # pragma: no cover
+    pass