Set SO_TIMESTAMP correctly for the various platforms

hbd/server/udp.py

@@ -7,6 +7,8 @@ import time
 import zlib
 import logging
 
+from platform import system as platform_system
+
 from ..common.proto import stodict, oldmtodict
 from ..common.utils import dur
 from . import notify as notify_mod
@@ -16,9 +18,18 @@ eventlog = notify_mod.eventlog
 
 # SO_TIMESTAMP: kernel attaches a struct timeval to each received datagram.
 # Supported on Linux, FreeBSD, and macOS.  The constant is not exposed by
-# Python's socket module on all platforms, so fall back to the Linux value (29)
-# when absent.
-_SO_TIMESTAMP = getattr(socket, 'SO_TIMESTAMP', 29)
+# Python's socket module on all platforms 
+platform = platform_system()
+if platform == "Darwin":
+    _SO_TIMESTAMP = 1024  # SO_TIMESTAMP on macOS (not in Python's socket module)
+elif platform == "Linux":
+    _SO_TIMESTAMP = 29  # Linux value (not in older Python versions)
+elif platform == "FreeBSD":
+     _SO_TIMESTAMP = 32  # FreeBSD value (not in older Python versions)
+else:
+    logger.warning("SO_TIMESTAMP may not be supported on this platform (%s)", platform)
+    _SO_TIMESTAMP = None
+
 # struct timeval uses two native C longs: tv_sec and tv_usec
 _TIMEVAL = struct.Struct('@ll')