diff --git a/kineintercom/intercom.py b/kineintercom/intercom.py
index df6ac30..63de0d4 100644
--- a/kineintercom/intercom.py
+++ b/kineintercom/intercom.py
@@ -562,19 +562,26 @@ def listener(sock, logger):
                 try:
                     data += clientsocket.recv(1)
                     if data.decode('utf-8').endswith('\n'):
+                        logger.debug("datas recv: {}".format(data.decode('utf-8')))
                         if data.decode('utf-8').startswith('RELOAD_DB'):
-                            logger.debug("==> RELOAD DB")
                             FLAG_CONF_UPDATE = True
+                            data = b''
                         elif data.decode('utf-8').startswith('RELOAD_HOURS'):
-                            logger.debug("==> RELOAD HOURS")
                             FLAG_CONF_UPDATE = True
                             FLAG_HORAIRE_UPDATE = True
+                            data = b''
+                        elif data.decode('utf-8').startswith('ALIVE?'):
+                            clientsocket.sendall(b"ALIVE\n")
+                            data = b''
+                    elif len(data) == 0:
+                        # deconnexion du client
+                        logger.info("deconnexion du client ...")
                         clientsocket = None
                         flag = False
                 except:
                     continue
-                if not data:
-                    break
+                #if not data:
+                #    break
 
     logger.debug("Fin du serveur de communication")
     return
@@ -954,6 +961,7 @@ def main():
                                   minute='*',
                                   id="job_id")
                     FLAG_HORAIRE_UPDATE = False
+
                 FLAG_CONF_UPDATE = False
 
             # Si le module GSM est ouvert