LUA RUI Verbs

This section describes the LUA Request Unit Interface (RUI) verbs. It provides the following information for each RUI verb:

• Details of the LUA verb control block (VCB) structure.
• A description of the verb and its purpose.
• Parameters (VCB structure members) supplied to and returned by LUA. The description of each parameter includes information on the valid values for that parameter.
• Interaction with other verbs.

There are six RUI verbs:

RUI_BID

Notifies the RUI application that a message is waiting to be read using RUI_READ.

RUI_INIT

Transfers control of the specified LU to the LUA application and establishes a session between the system services control point (SSCP) and the specified LU.

RUI_PURGE

Cancels a previous RUI_READ.

RUI_READ

Receives responses, SNA commands, and data into an LUA application's buffer.

RUI_TERM

Ends both the LU session and the SSCP session for a given LUA LU.

RUI_WRITE

Sends an SNA RU from the LUA application to the host over either the LU session or the SSCP session, and sends responses, SNA commands, and data from an LUA application to the host LU.

The verb descriptions in this section include parameter values specific to each verb. For a complete description of the VCB structure for both RUI and SLI verbs, see Verb Control Blocks.