LUA SLI Verbs

This section describes the LUA Session Level Interface (SLI) verbs. It provides the following information for each SLI 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 SLI verbs and two user-defined routines:

SLI_BID

Notifies the SLI application that a message is waiting to be read using SLI_RECEIVE and provides the current status of the session to the Windows LUA application.

SLI_CLOSE

Ends a session opened with SLI_OPEN.

SLI_OPEN

Transfers control of the specified LU to the Windows LUA application and establishes a session between the system services control point (SSCP) and the specified LU, as well as an LU-LU session.

SLI_PURGE

Cancels SLI_RECEIVE verbs issued with a wait condition.

SLI_RECEIVE

Receives responses, SNA commands, and data into the buffer of a Windows LUA application. SLI_RECEIVE also provides the current status of the session to the Windows LUA application.

SLI_SEND

Sends responses, SNA commands, and data from a Windows LUA application to a host LU.

SLI_BIND_ROUTINE

Notifies the Windows LUA application that a BIND request has come from the host and allows the user-supplied routine to examine the request and formulate a response.

SLI_STSN_ROUTINE

Notifies the Windows LUA application that an STSN command has come from the host and allows the user-supplied routine to examine the request and formulate a response.

Cryptography is not defined as part of the Windows LUA standard.

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.