From 1bcea07c09e70ca8f2496a69f9bfff52677a7c88 Mon Sep 17 00:00:00 2001
From: ordinary-jamie <101677823+ordinary-jamie@users.noreply.github.com>
Date: Sat, 17 Feb 2024 09:55:24 +1100
Subject: [PATCH] Add header bytes to buffer size

---
 Lib/asyncio/proactor_events.py | 2 +-
 Lib/asyncio/selector_events.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Lib/asyncio/proactor_events.py b/Lib/asyncio/proactor_events.py
index 183071d3ba2c85..a512db6367b20a 100644
--- a/Lib/asyncio/proactor_events.py
+++ b/Lib/asyncio/proactor_events.py
@@ -499,7 +499,7 @@ def sendto(self, data, addr=None):
 
         # Ensure that what we buffer is immutable.
         self._buffer.append((bytes(data), addr))
-        self._buffer_size += len(data)
+        self._buffer_size += len(data) + 8  # include header bytes
 
         if self._write_fut is None:
             # No current write operations are active, kick one off
diff --git a/Lib/asyncio/selector_events.py b/Lib/asyncio/selector_events.py
index 68b9656b2ce6e5..8e888d26ea0737 100644
--- a/Lib/asyncio/selector_events.py
+++ b/Lib/asyncio/selector_events.py
@@ -1276,7 +1276,7 @@ def sendto(self, data, addr=None):
 
         # Ensure that what we buffer is immutable.
         self._buffer.append((bytes(data), addr))
-        self._buffer_size += len(data)
+        self._buffer_size += len(data) + 8  # include header bytes
         self._maybe_pause_protocol()
 
     def _sendto_ready(self):