From f111f2e0ac623da4cf5c59ed131ef49b604e3020 Mon Sep 17 00:00:00 2001
From: rahul <rahul@riptideio.com>
Date: Fri, 24 Nov 2017 16:23:03 +0530
Subject: [PATCH] New helper function to help stop Asynchronous server are
 being added. Calling this helper function will kill the main thread

---
 pymodbus/server/async.py | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/pymodbus/server/async.py b/pymodbus/server/async.py
index b72eb3b53..c64fa6d8a 100644
--- a/pymodbus/server/async.py
+++ b/pymodbus/server/async.py
@@ -274,9 +274,23 @@ def StartSerialServer(context, identity=None,
     SerialPort(protocol, port, reactor, baudrate)
     reactor.run()
 
+
+def _stop_server(is_mainthread=True):
+    from twisted.internet import reactor
+    if _is_main_thread():
+        reactor.stop()
+    else:
+        reactor.callFromThread(reactor.stop)
+    _logger.debug("Stopping main thread")
+
+
+StopTcpServer = StopSerialServer = _stop_server
+
+
 #---------------------------------------------------------------------------#
 # Exported symbols
 #---------------------------------------------------------------------------#
 __all__ = [
-    "StartTcpServer", "StartUdpServer", "StartSerialServer",
+    "StartTcpServer", "StartUdpServer", "StartSerialServer", "StopTcpServer",
+    "StopSerialServer"
 ]