Status-Control(...) ACKLUA

The Status-Control(...) ACKLUA message is for LUA applications only. It flows from the node to the application, and is used with a PLU connection.

struct Status-Control(...) ACKLUA {
    PTRBFHDR  nxtqptr;
    PTRBFELT  hdreptr;
    CHAR      numelts;
    CHAR      msgtype;
    CHAR      srcl;
    CHAR      srcp;
    INTEGER   srci;
    CHAR      destl;
    CHAR      destp;
    INTEGER   desti;
    CHAR      sfhdr.stctlhdr.ctlstat;
    CHAR      sfhdr.stctlhdr.ctlqual;
    CHAR      sfhdr.stctlthdr.ctltype
    CHAR      sfhdr.stctlhdr.ctlack;
    CHAR      sfhdr.stctlhdr.ctlflag1;
    CHAR      sfhdr.stctlhdr.ctlflag2;
    INTEGER   sfhdr.stctlhdr.ctlnumb1;
    INTEGER   sfhdr.stctlhdr.ctlnumb2;
    INTEGER   sfhdr.stctlhdr.ctlmsgk;
}; 
 

Members

nxtqptr

Pointer to next buffer header.

hdreptr

Pointer to buffer element (NIL).

numelts

Number of buffer elements (0x00).

msgtype

Message type STATFMI (0x21).

srcl

Source locality.

srcp

Source partner.

srci

Source index.

destl

Destination locality.

destp

Destination partner.

desti

Destination index.

sfhdr.stctlhdr.ctlstat

Status type STCNTRL (0x02).

sfhdr.stctlhdr.ctlqual

Control qualifier ACKLUA (0x05).

sfhdr.stctlhdr.ctltype

Control type.

sfhdr.stctlhdr.ctlack

Reserved.

sfhdr.stctlhdr.ctlflag1

Application flag 1.

sfhdr.stctlhdr.ctlflag2

Application flag 2.

sfhdr.stctlhdr.ctlnumb1

Code 1.

sfhdr.stctlhdr.ctlnumb2

Code 2.

sfhdr.stctlhdr.ctlmsgk

Message key (used for the SNA sequence number, see Remarks).

Remarks

• The Status-Control(…) ACKLUA message consists of a buffer header only; there is no buffer element.
• See the table in Status-Control Message for a summary of Status-Control control type codes.
• The application flags and the code 1 and code 2 fields are undefined and should not be used.
• The message key field gives the sequence number from the TH of the inbound data message to which this is an acknowledgment.