fix threading

tcpliveplot/backends/input/socket.py

@@ -2,6 +2,7 @@
 
 import time
 import socket
+import threading
 from ipaddress import ip_address
 from collections import deque
 
@@ -25,6 +26,7 @@ class SocketInput(InputBase):
         self.incomeBuffer = deque()
         self.connectionUp = False
         self.socketUp = False
+        self.__stopped = threading.Event()
 
         ip, separator, port = self.options.logServer.rpartition(':')
         if(':' not in self.options.logServer or port is ''):
@@ -43,7 +45,10 @@ class SocketInput(InputBase):
         self.createSocket()
 
         while not self.connectToServer():
-            pass
+            if self.__stopped:
+                return
+            else:
+                pass
 
     def createSocket(self):
         try:
@@ -63,10 +68,10 @@ class SocketInput(InputBase):
             return True
         except socket.error:
             print("Error: Could not connect to " + self.dst + ". Retrying in " + str(LOGSERVER_CONNECT_RETRY_TIME) + "s ...")
-            time.sleep(LOGSERVER_CONNECT_RETRY_TIME)
+            self.__stopped.wait(LOGSERVER_CONNECT_RETRY_TIME)
             return False
         else:
-            time.sleep(LOGSERVER_CONNECT_RETRY_TIME)
+            self.__stopped.wait(LOGSERVER_CONNECT_RETRY_TIME)
             return False
 
     def reconnectToServer(self):
@@ -75,9 +80,13 @@ class SocketInput(InputBase):
             self.createSocket()
 
         while not self.connectToServer():
-            pass
+            if self.__stopped:
+                return
+            else:
+                pass
 
     def tearDown(self):
+        self.__stopped.set()
         self.socket.close()
         pass