From 2f5cd48f0f574c4cabd63f0b46dd652ff93ffc89 Mon Sep 17 00:00:00 2001
From: Miguel Grinberg <miguel.grinberg@gmail.com>
Date: Sun, 7 Oct 2018 23:35:46 +0100
Subject: [PATCH] graceful exit for service task

---
 engineio/server.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/engineio/server.py b/engineio/server.py
index 451b3091..1639296e 100644
--- a/engineio/server.py
+++ b/engineio/server.py
@@ -528,6 +528,8 @@ def _service_task(self):  # pragma: no cover
                         continue
                     s.check_ping_timeout()
                     self.sleep(sleep_interval)
+            except (SystemExit, KeyboardInterrupt):
+                break
             except:
                 # an unexpected exception has occurred, log it and continue
                 self.logger.exception('service task exception')