bpo-41467: Fix asyncio recv_into() on Windows (GH-21720)
On Windows, fix asyncio recv_into() return value when the socket/pipe
is closed (BrokenPipeError): return 0 rather than an empty byte
string (b'').
(cherry picked from commit 602a971a2af3a685d625c912c400cadd452718b1)
Co-authored-by: Victor Stinner <vstinner@python.org>
diff --git a/Lib/asyncio/windows_events.py b/Lib/asyncio/windows_events.py
index c07fe32..a6759b7 100644
--- a/Lib/asyncio/windows_events.py
+++ b/Lib/asyncio/windows_events.py
@@ -469,7 +469,7 @@
else:
ov.ReadFileInto(conn.fileno(), buf)
except BrokenPipeError:
- return self._result(b'')
+ return self._result(0)
def finish_recv(trans, key, ov):
try: