/vfy

Requests the Uniface Router to periodically send an existence check message to the client to check the connection, but only if the client connection has a $DNP registration.

/vfy=Duration{TimeUnit}

Arguments

  • Duration—maximum length of time that a client connection thread blocks receive requests before it checks whether a connection is still required.
  • TimeUnit— optional unit of time; one of:
    • s—seconds (the default, if TimeUnit is omitted)
    • m—minutes
    • h—hours
    • d—days
    • w—weeks

    Note: You cannot combine time units, such as /vfy=4w2d.

Use

Use this switch on the network path setting in the client’s assignment file.

Note:  Use it only if error -23 (Duplicate UST) repeatedly occurs when trying to reestablish a connection with the Uniface Router. For more information, see Broken or Closed Connections.

Description

The /vfy switch is a more selective version of the /uec switch.

The setting only applies to the specified path. By setting it in the client, you can select which paths are sent an existence check message.

If the Uniface Router has a $NET_TIMEOUT vfy setting for all its client connections, that takes precedence over any client setting. For more information, see $NET_TIMEOUT.

Using /vfy

;client.asn
[PATHS]
$SRV TCP:ABC0123.mycompany+13001|username|password|SRV1 /vfy=60

Related Topics