REUSE PORT option not supported on windows

Author: Dennis-Johnson

can/interfaces/udp_multicast/bus.py

@@ -1,11 +1,11 @@
 import errno
 import logging
+import platform
 import select
 import socket
 import struct
 import time
 import warnings
-import platform
 from typing import List, Optional, Tuple, Union
 
 import can
@@ -22,7 +22,7 @@
     ioctl_supported = False
     pass
 
-# All ioctls aren't supported on MacOS. 
+# All ioctls aren't supported on MacOS.
 is_macos = platform.system() == "Darwin"
 
 log = logging.getLogger(__name__)
@@ -277,7 +277,10 @@ def _create_socket(self, address_family: socket.AddressFamily) -> socket.socket:
 
             # Allow multiple programs to access that address + port
             sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
-            sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
+
+            # Option not supported on Windows.
+            if hasattr(socket, "SO_REUSEPORT"):
+                sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
 
             # set how to receive timestamps
             try: