Middleware Service Settings

Data Change Poll Rate

The data change poll rate value to specify the frequency at which the database is checked for changes which is sent to the subscribed clients.

HTTP Port

The HTTP port number used by the MES middleware's WCFHostService account for sending asynchronous messages, such as for MSMQ and EventBroker.

If, in the Middleware Client Security Settings, the Security Mode for HTTP Communication setting is set to NONE and HTTP is being used rather than TCP for communication between the middleware server and client middleware proxies, this is also the HTTP port number that the MES middleware server and proxies will use.

Max Data Set Rows

The maximum data set rows value that is returned to the client that subscribe to data changes.

Reliable Session Inactivity Timeout

The duration of inactivity before the session times out, in seconds.

This and the other reliable session channel settings allow you to customize the reliable messaging channel behavior. The default values allow more clients to simultaneously establish reliable sessions to the MES middleware service and reduce server too busy errors (which are logged to the WCF service log) when a burst of requests occurs.

Reliable Session Max Pending Channels

The maximum number of pending channels.

Reliable Session Max Retry Count

The maximum number of retries to establish a channel connection.

TCP Port

If the middleware is configured to use TCP rather than HTTP for communication between the middleware server and client middleware proxies, this is the TCP port number that the MES middleware server and proxies will use.

If the TCP port number is changed, the Middleware Configuration Editor will update the existing inbound firewall exception to the new port number (used by MES Middleware Service). For the firewall exception update to take effect and allow middleware proxies to communicate with the middleware, the middleware has to be restarted.