Server_Keep_Alive

Server_Keep_Alive_Timeout


Used for:	RTclient, RTserver, RTmon, and RTgms processes
Type:	Real Number
Default Value:	`15.0`
Valid Values:	Any real number 0.0 or greater

The Server_Keep_Alive_Timeout option specifies how long (in seconds) to wait when checking if a connection to an RTserver is still alive. This check is called a keep alive and occurs if more than Server_Read_Timeout seconds have elapsed since the RT process (RTclient, RTserver, RTgms, or RTmon) last read any data from that RTserver. Keep alives are disabled if Server_Keep_Alive_Timeout is set to 0.0.

If the keep alive fails, then the connection to that RTserver is destroyed and:

if the connection had been between an RTclient, RTmon, or RTgms process and that RTserver, the RTclient, RTmon, or RTgms process attempts to create a new connection to that RTserver

if the connection had been between an RTserver process and that RTserver, the RTserver process might attempt to create a new connection to that RTserver, depending on the RTserver process’ setting for Server_Reconnect_Interval (see Server_Reconnect_Interval

The larger the value you set for Server_Keep_Alive_Timeout for your RT process, the longer your RTprocess must wait to detect a possible RTserver failure. However, if you set too low a value for Server_Keep_Alive_Timeout, your RT process might think that it has lost its connection to an RTserver when that RTserver is merely very busy.

This option is required and cannot be unset.