Defining variables

 

/* allocate storage for the message buffer. Note that the RECEIVE     */
/* vector structure includes space for the standard vector header.    */

MsgBuffer = malloc(sizeof(MQCIH) + sizeof(brrcv)
                 + strlen(CMDSTRING) ) ;
⋮

Set up the MQMD

memcpy(mqmd.Format, MQFMT_CICS,sizeof((MQFMT_CICS));
memcpy(mqmd.MsgId, MQMI_NONE, sizeof(MQMI_NONE));
memcpy(mqmd.CorrelId, MQCI_NEW_SESSION,     sizeof((MQCI_NEW_SESSION);
mqmd.MsgType = MQMT_REQUEST;
strncpy(mqmd.ReplyToQueue,"MyReplyQueue");

Set up the MQCIH

mqcih.LinkType = MQCLT_TRANSACTION ;
mqcih.GetWaitInterval= 1000  ; /* one second */
mqcih.FacilityKeepTime = 10000  ; /* |= 0 says return token */
memcpy(mqcih.Facility,MQCFAC_NONE,sizeof(MQCFAC_NONE));
strncpy(mqcih.TransactionId, "CEMT", strlen("CEMT"));
strncpy(mqcih.FacilityLike, "    ", strlen("    "));
mqcih.UOWControl = MQCUOWC_FIRST;
memcpy(mqcih.AttentionId,AID,sizeof(mqcih.AttentionId); /* enter pressed */

Set up the BRMQ

  brvh.brmq_vector_length = sizeof(brrcv) + strlen(CMDSTRING) ;
    strncpy(brvh.brmq_vector_descriptor, RCV_VECTOR,  strlen(RCV_VECTOR)) ;
    strncpy(brvh.brmq_vector_type, INBOUND, strlen(INBOUND)) ;
    strncpy(brvh.brmq_vector_version, VERSION, strlen(VERSION)) ;
    /* Initialize fields in the RECEIVE vector structure: */
    strncpy(brrcv.brmq_re_transmit_send_areas, YES, strlen(YES)) ;
    strncpy(brrcv.brmq_re_buffer_indicator, NO, strlen(NO)) ;
    strncpy(brrcv.brmq_re_aid, AID, sizeof(brrcv.brmq_re_aid)) ;
    brrcv.brmq_re_data_len =strlen(CMDSTRING) ;

Building the message

/* Copy the MQCIH to the start of the message buffer */
    memcpy(MsgBuffer, &mqcih, sizeof(MQCIH)) ;
    /* Append the RECEIVE vector to the CIH */
    memcpy(MsgBuffer + sizeof(MQCIH), brrcv, sizeof(brrcv) ) ;
    /* Overlay the standard vector header on the RECEIVE vector */
    memcpy(MsgBuffer + sizeof(MQCIH), brvh, sizeof(brvh) ) ;
    /* Append the command string to the vector structure */
    strncpy(MsgBuffer + sizeof(MQCIH) + sizeof(brrcv),
    CMDSTRING, strlen(CMDSTRING)) ;
/* the message is now ready for the MQPUT with length of
   sizeof(MQCIH) + sizeof(brrcv)+ strlen(CMDSTRING);

 

Parent topic:

Example: Invoking CEMT I TASK from an application

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