Socket not kept connected

[Orfait]

(Note : I am new to ioBroker. I am trying it for SIA only at the moment.)

After the adapter sends out an ACK response, the connection is closed.

So, on my alarm system (Ajax System), it means that the CSR is not available. So it generate a new "NULL" request.
As a result my alarm consider there is no CSR.

Here is a log :

from	Time	debug	Message
sia.0	2020-03-25 10:14:48.112	info	(9236) connection from 192.168.6.35:63133 closed
sia.0	2020-03-25 10:14:48.105	info	(9236) sending to 192.168.6.35:63133 following message: A4D5000F"ACK"0000L0#1[]
sia.0	2020-03-25 10:14:48.104	info	(9236) Created ACK : <0x0A>A4D5000F"ACK"0000L0#1[]<0x0D>
sia.0	2020-03-25 10:14:48.103	info	(9236) SIA Message : <0x0A>73000024"NULL"0000L0#1[]_09:15:05,02-25-2020<0x0D>
sia.0	2020-03-25 10:14:48.103	info	(9236) received from 192.168.6.35:63133 following message: 73000024"NULL"0000L0#1[]_09:15:05,02-25-2020

I tried with a nodered flow. I can confirm that the connection is closed by ioBroker.sia adapter.

[XAKEPEHOK]

Same problem

[Hirsch-DE]

Hallo,
Die Meldung mit Typ "NULL" kommt vom Polling (Link Test). Im Übertragungsgerät darf das Polling (Intervall) nicht aktiviert werden.