fix: module 'signal' has no attribute 'SIGHUP' on Windows

Signed-off-by: Dmitri Khokhlov <[email protected]>

Author: dkhokhlov

kernel_gateway/gatewayapp.py

@@ -6,6 +6,7 @@
 import importlib
 import logging
 import os
+import sys
 import signal
 import socket
 from distutils.util import strtobool
@@ -546,7 +547,8 @@ def start(self):
         ))
         self.io_loop = ioloop.IOLoop.current()
 
-        signal.signal(signal.SIGHUP, signal.SIG_IGN)
+        if sys.platform != 'win32':
+            signal.signal(signal.SIGHUP, signal.SIG_IGN)
 
         signal.signal(signal.SIGTERM, self._signal_stop)