From 38077d109cd35acb0c8ae3e50aa82a7d0505b69d Mon Sep 17 00:00:00 2001
From: Frederick Price <rprice@pricemail.ca>
Date: Wed, 26 Jun 2024 16:39:03 -0400
Subject: [PATCH] Fix Async import problem on Posix

Windows only seems to return WSAE* errors, so we need to check for these
errors on Windows.

However the WSAE* error definitions only exist on Windows, they do not
exist on Posix.

Trying to import them causes a failure on Posix.

On Posix, we now just reassign the WSAE* error values to the normal E*
values, letting the code compile.
---
 Lib/asyncore.py | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/Lib/asyncore.py b/Lib/asyncore.py
index 3134ddb6164c1e..9909a6dd63d4a0 100644
--- a/Lib/asyncore.py
+++ b/Lib/asyncore.py
@@ -55,9 +55,24 @@
 import os
 from errno import EALREADY, EINPROGRESS, EWOULDBLOCK, ECONNRESET, EINVAL, \
      ENOTCONN, ESHUTDOWN, EINTR, EISCONN, EBADF, ECONNABORTED, EPIPE, EAGAIN, \
-     errorcode, \
-     WSAEWOULDBLOCK, WSAENOTCONN, WSAEINPROGRESS, WSAEALREADY, WSAEISCONN, \
-     WSAECONNABORTED, WSAENOTCONN, WSAEBADF
+     errorcode
+
+if sys.platform[:3] == 'win':
+    # On Windows, handle the Windows error numbers
+    from errno import \
+        WSAEWOULDBLOCK, WSAENOTCONN, WSAEINPROGRESS, WSAEALREADY, WSAEISCONN, \
+        WSAECONNABORTED, WSAENOTCONN, WSAEBADF
+else:
+    # On Posix the error codes aren't duplicated, with different numbers
+    WSAEWOULDBLOCK = EWOULDBLOCK
+    WSAENOTCONN = ENOTCONN
+    WSAEINPROGRESS = EINPROGRESS
+    WSAEALREADY = EALREADY
+    WSAEISCONN = EISCONN
+    WSAECONNABORTED = ECONNABORTED
+    WSAENOTCONN = ENOTCONN
+    WSAEBADF = EBADF
+
 
 _DISCONNECTED = frozenset((ECONNRESET, ENOTCONN, ESHUTDOWN, ECONNABORTED, EPIPE,
                            EBADF, WSAENOTCONN, WSAECONNABORTED, WSAEBADF))