fixed reconnect function

devices/statistics_writer/receiver.py

@@ -55,10 +55,15 @@ class tcp_receiver(receiver):
         super().__init__(fd=self.sock.fileno())
 
     def reconnect(self):
-        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-        self.sock.connect((self.host, self.port))
-        self.fd = self.sock.fileno()
-        return True
+        self.fd = None
+        try:
+            self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            self.sock.connect((self.host, self.port))
+            self.fd = self.sock.fileno()
+            return True
+        except Exception:
+            raise
+
 
 
 class file_receiver(receiver):