So, we need to enable SO_KEEPALIVE and also set the KEEPALIVE time (
keepalivetime = 60000,
keepaliveinterval = 1000
), since the default 2 hours is too long to keep firewall not drop the connection, right?
So, even if the second connection in NI VISA support SO_KEEPALIVE, the firewall dropping connection may still not be resolved without changing the time/interval, right?