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The IWAYEVT0 sample program (iwayevt0.cobol) is a sample program that tests event handling in the iWay Transaction Adapter for IMS. It is identical to the version that is packaged with the iWay Transaction Adapter for CICS, only modified to run on IMS.
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The IWAYEVT0 sample program and related program files are located in the following directory:
<iway_home>\etc\samples\ims\iwayevt0
where:
Is the location on your system where iWay Service Manager is installed.
The following subdirectories are included for the IWAYEVT0 sample program:
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The cobolfd subdirectory contains the COBOL copybook (IWAYEVT0_IN.CBL) to map the data that is sent from IMS.
The following is the structure of the IWAYEVT0_IN.CBL COBOL copybook:
05 ALPHA01 PIC X(8). 05 INT01 PIC S9(4) BINARY. 05 PACK01 PIC S9(15) PACKED-DECIMAL. 05 ZONE01 PIC 9(4).
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The src subdirectory contains the COBOL program (IWAYEVT0.COBOL).
The following is the structure of the COBOL program (IWAYEVT0.COBOL):
CBL TRUNC(BIN)
ID DIVISION.
PROGRAM-ID. IWAYEVT0.
***************************************************************
* IWAYEVT0 - THIS SAMPLE PROGRAM DEMONSTRATES SENDING A *
* RECORD TO THE IWAY IMS ADAPTER USING CICS SOCKETS. NO *
* RESPONSE IS RETURNED. DATA RECORDS MAPPED BY COPYBOOKS *
* MUST EACH BE PRECEDED BY A 4 BYTE BINARY LENGTH. *
* *
* THE IMS ADAPTER MUST BE CONFIGURED WITH AN EVENT TO *
* RECEIVE THIS DATA. SELECT "IS LENGTH PREFIX", SYNCHRON- *
* IZATION TYPE "REQUEST", AND USE IWAYEVT0.CBL AS THE *
* PREPARSER FD. HOST AND PORT MUST MATCH THE VALUES SET *
* BELOW. *
* *
* THE EZASOKET INTERFACE IS DOCUMENTED IN THE Z/OS *
* COMMUNICATIONS SERVER IP CICS SOCKETS GUIDE. *
* *
* USES: IWAYEVT0_IN.CBL (INPUT RECORD) *
* *
***************************************************************
ENVIRONMENT DIVISION.
DATA DIVISION.
WORKING-STORAGE SECTION.
77 GU PIC X(04) VALUE 'GU '.
77 CHNG PIC X(04) VALUE 'CHNG'.
77 ISRT PIC X(04) VALUE 'ISRT'.
01 SOCKET-GROUP.
05 SOC-FUNCTION PIC X(16) VALUE SPACES.
05 ERRNO PIC 9(8) BINARY VALUE ZEROES.
05 RETCODE PIC S9(8) BINARY VALUE ZEROES.
05 AF PIC 9(8) BINARY VALUE 2.
05 SOCTYPE PIC 9(8) BINARY VALUE 1.
05 PROTO PIC 9(8) BINARY VALUE 0.
05 NAMELEN PIC 9(8) BINARY.
05 HOSTNAME PIC X(255).
05 HOSTENT POINTER.
05 NAME.
10 FAMILY PIC 9(4) BINARY VALUE 2.
10 PORT PIC 9(4) BINARY.
10 IP-ADDRESS PIC 9(8) BINARY.
10 IP-ADDRESS-ALPHA REDEFINES IP-ADDRESS PIC X(4).
10 RESERVED PIC X(8) VALUE LOW-VALUES.
05 FLAGS PIC 9(8) BINARY VALUE 0.
05 SOCKET PIC 9(4) BINARY. 05 NBYTE PIC 9(8) BINARY.
05 CMD PIC 9(8) BINARY.
05 REQARG PIC 9(8) BINARY.
01 WORKAREA.
05 LLEN PIC 9(8) BINARY VALUE 4.
05 ERRMSG PIC X(41)
VALUE 'ERROR ENCOUNTERED DURING '.
05 TMSG PIC X(44)
VALUE 'EVENTCBL: RECORD TRANSMISSION WAS SUCCESSFUL'.
***************************************************************
* SAMPLE INBOUND DATA RECORD WITH VARIOUS COBOL TYPES. *
***************************************************************
01 INBOUND-RECORD.
05 ALPHA01 PIC X(8)
VALUE 'ABCDEFGH'.
05 INT01 PIC S9(4) BINARY VALUE 25.
05 PACK01 PIC S9(15) PACKED-DECIMAL VALUE 50.
05 ZONE01 PIC 9(4) VALUE 75.
01 MSG-OUT.
05 IMS-LL PIC 9(4) BINARY VALUE 70.
05 IMS-ZZ PIC 9(4) BINARY.
05 MSG PIC X(70).
01 PARM-IN.
05 SLEN PIC S9(4) BINARY.
05 SCRN-IOA PIC X(255).
LINKAGE SECTION.
01 HOSTENT-STRUCT.
05 HOSTNAME-PTR POINTER.
05 HOSTALIASL-PTR POINTER.
05 HOSTFAMILY PIC S9(8) BINARY.
05 HOSTADR-LEN PIC S9(8) BINARY.
05 HOSTADRL-PTR POINTER.
01 HOST-ENTRY-PTR POINTER.
01 HOST-ENTRY PIC 9(8) BINARY.
*********************************************************
* I/O PCB *
*********************************************************
01 IOPCB.
05 LTERM PIC X(08).
05 FILLER PIC X(02).
05 IOPCB-STATUS PIC X(02).
05 FILLER PIC X(28).
PROCEDURE DIVISION.
MAINLINE.
ENTRY 'DLITCBL' USING IOPCB
PERFORM GETPARM
***************************************************************
* CHANGE HOSTNAME AND PORT TO SITE SPECIFIC LOCATION OF THE *
* CICS ADAPTER. *
***************************************************************
MOVE 'YOUR.DNS.NAME' TO HOSTNAME
MOVE 4772 TO PORT
PERFORM GETSOCK
PERFORM GETHOSTBYNAME
PERFORM SETBLOCK
PERFORM CONNECTTOHOST
PERFORM SENDDATA
PERFORM CLOSESOCK
MOVE SPACE TO MSG
MOVE TMSG TO MSG
CALL 'CBLTDLI' USING ISRT, IOPCB, MSG-OUT
GOBACK.
GETPARM.
CALL 'CBLTDLI' USING GU, IOPCB, SCRN-IOA
IF IOPCB-STATUS NOT = SPACES
PERFORM WRITERR-EXIT
END-IF
* DISPLAY 'INPUT PARM: ' SCRN-IOA
.
GETSOCK.
MOVE 'SOCKET ' TO SOC-FUNCTION
CALL 'EZASOKET' USING SOC-FUNCTION,
AF,
SOCTYPE,
PROTO,
ERRNO,
RETCODE
MOVE RETCODE TO SOCKET
IF RETCODE < 0
PERFORM WRITERR-EXIT
END-IF.
GETHOSTBYNAME.
MOVE 'GETHOSTBYNAME ' TO SOC-FUNCTION
MOVE LENGTH OF HOSTNAME TO NAMELEN
CALL 'EZASOKET' USING SOC-FUNCTION NAMELEN HOSTNAME
HOSTENT RETCODE
IF RETCODE EQUAL ZERO
SET ADDRESS OF HOSTENT-STRUCT TO HOSTENT
SET ADDRESS OF HOST-ENTRY-PTR TO HOSTADRL-PTR
SET ADDRESS OF HOST-ENTRY TO HOST-ENTRY-PTR
ELSE
PERFORM WRITERR-EXIT
END-IF.
SETBLOCK.
MOVE 'FCNTL ' TO SOC-FUNCTION
MOVE 4 TO CMD
MOVE 0 TO REQARG
CALL 'EZASOKET' USING SOC-FUNCTION, SOCKET, CMD, REQARG,
ERRNO, RETCODE.
CONNECTTOHOST.
MOVE HOST-ENTRY TO IP-ADDRESS
MOVE 'CONNECT ' TO SOC-FUNCTION
CALL 'EZASOKET' USING SOC-FUNCTION,
SOCKET,
NAME,
ERRNO,
RETCODE
IF RETCODE = 0
CONTINUE
ELSE
PERFORM WRITERR-EXIT
END-IF.
SENDDATA.
***************************************************************
* PRECEDE THE RECORD WITH 4 BYTE BINARY RECORD LENGTH *
***************************************************************
MOVE 'SEND ' TO SOC-FUNCTION
MOVE LENGTH OF INBOUND-RECORD TO NBYTE
MOVE 4 TO LLEN
MOVE 0 TO RETCODE
CALL 'EZASOKET' USING SOC-FUNCTION,
SOCKET,
FLAGS,
LLEN,
NBYTE,
ERRNO,
RETCODE
IF RETCODE = -1
PERFORM WRITERR-EXIT
END-IF
***************************************************************
* SEND THE ACTUAL RECORD *
***************************************************************
CALL 'EZASOKET' USING SOC-FUNCTION,
SOCKET,
FLAGS,
NBYTE,
INBOUND-RECORD,
BY REFERENCE ERRNO,
RETCODE
IF RETCODE = -1
PERFORM WRITERR-EXIT
END-IF
.
CLOSESOCK.
MOVE ZEROES TO RETCODE ERRNO
MOVE 'CLOSE ' TO SOC-FUNCTION
CALL 'EZASOKET' USING SOC-FUNCTION,
SOCKET,
ERRNO,
RETCODE
IF RETCODE < 0
PERFORM WRITERR-EXIT
END-IF.
WRITERR-EXIT.
MOVE SOC-FUNCTION TO ERRMSG(26:15)
DISPLAY 'ERROR IN PROGRAM FUNCTION: ' ERRMSG.