Controleer op socket close

lmwsip.py

@@ -171,6 +171,10 @@ recieve a answer from the sip server
             except Exception as e:
                 self.log.error("SipLmw.recv: socket timeout: %s", e)
                 self.closesocket()
+                raise LmwSipConnectError("LmwSip.recv: No data recieved")
+            if len(bytebuf) == 0:
+                self.log.error("SipLmw.recv: no data recieved")
+                self.closesocket()
                 raise LmwSipConnectError("LmwSip.recv: Socket timeout")
             try:
                 stringbuf += bytebuf.decode('utf-8')