From d93c78f81fcacf8f13c7de7ab41b4a6a147125dc Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Thu, 3 Oct 2024 17:59:19 -0500
Subject: [PATCH] [PR #9405/b96b01b backport][3.11] Only create the connection
 closed exception once (#9409)

---
 aiohttp/client_reqrep.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/aiohttp/client_reqrep.py b/aiohttp/client_reqrep.py
index c68dfcbd1bd..7664ab15201 100644
--- a/aiohttp/client_reqrep.py
+++ b/aiohttp/client_reqrep.py
@@ -819,6 +819,9 @@ async def _on_headers_request_sent(
             await trace.send_request_headers(method, url, headers)
 
 
+_CONNECTION_CLOSED_EXCEPTION = ClientConnectionError("Connection closed")
+
+
 class ClientResponse(HeadersMixin):
 
     # Some of these attributes are None when created,
@@ -1178,7 +1181,7 @@ def _cleanup_writer(self) -> None:
     def _notify_content(self) -> None:
         content = self.content
         if content and content.exception() is None:
-            set_exception(content, ClientConnectionError("Connection closed"))
+            set_exception(content, _CONNECTION_CLOSED_EXCEPTION)
         self._released = True
 
     async def wait_for_close(self) -> None: