LUA Verb Summary
LUA application programs can establish and use SNA sessions with either the RUI API or the SLI API. If an LUA application establishes an SNA session using RUI_INIT, it cannot issue any SLI verbs for that session. Likewise, if an LUA application establishes an SNA session using SLI_OPEN, it cannot issue any RUI verbs for that session.
Following is a brief summary of each LUA verb or user-supplied routine. Each verb supplies parameters to LUA, which performs the desired function and returns parameters to the application.
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RUI_BID
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Allows the application to determine when information from the host is available to be read.
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RUI_INIT
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Sets up the SSCP-LU session for an LUA application.
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RUI_PURGE
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Cancels an outstanding RUI_READ.
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RUI_READ
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Receives data or status information sent from the host to the LUA application's LU, on either the SSCP session or the LU session.
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RUI_TERM
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Ends the SSCP session for an LUA application. It also terminates the LU session if it is active.
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RUI_WRITE
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Sends data to the host on either the SSCP session or the LU session.
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SLI_BID
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Notifies the SLI application that a message is waiting to be read using SLI_RECEIVE. It also provides the current status of the session to the LUA application.
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SLI_BIND_ROUTINE
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An optional, user-supplied exit routine that notifies the LUA application that a BIND request has come from the host. It allows the routine to examine the request and formulate a response.
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SLI_CLOSE
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Ends a session opened with SLI_OPEN.
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SLI_OPEN
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Transfers control of the specified LU to the LUA application. It establishes a session between the SSCP and the specified LU, as well as an LU-LU session.
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SLI_PURGE
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Cancels SLI_RECEIVE verbs issued with a wait condition.
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SLI_RECEIVE
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Receives responses, SNA commands, and data into an LUA application's buffer. It also provides the current status of the session to the LUA application.
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SLI_SEND
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Sends responses, SNA commands, and data from an LUA application to a host LU.
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SLI_STSN_ROUTINE
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An optional, user-supplied exit routine that notifies the LUA application that a set and test sequence number (STSN) command has come from the host. It allows the routine to examine the request and formulate a response.