OSI/AS Programming Manual

Example 1: Session Layer
Sample Programs
056783 Tandem Computers Incorporated E–27
, (int *) &local_appl_2
, (int *) &remote_appl_2
, (int *) &session_rqmnts_2
, (int *) &conid_2
, (int *) &user_data_2
);
if ( status != ZAPS_VAL_STATUS_OK )
display_aps_status( cepi_2, error_connectreq_proc );
/* */
/* Get OSI address information. */
/* */
error =
APS_ASSOC_GETPARAM_( cepi_2
, /* conid */
, (int *) &local_appl
, (int *) &remote_appl
, /* connect-result */
, /* session-rqmnts */
, /* release-result */
, /* abort-reason */
);
if ( error != ZAPS_ERR_OK )
display_aps_error( error_assoc_getparam_proc );
/* */
/* APPLICATION 1 */
/* Connect indication */
/* */
/* Initialize the user data to a string of the */
/* character "1." Because this is an application using */
/* the OSI/AS Session Layer, we don't set the PCID */
/* field of the user_data structure. This field is */
/* used only by Presentation and ACSE and is ignored by */
/* the OSI/AS Session Layer. */
user_data_1.header.znum_elements = 1;
user_data_1.element.zlen = num_bytes_to_transfer;
user_data_1.element.ztype = ZAPS_VAL_DATA_TYPE_VALUE;
memset( user_data_1.value, '1', num_bytes_to_transfer );
/* */
/* Wait for connect indication. */
/* */
wait_for_event( cepi_1, ZAPS_VAL_EVT_CONNECT_IND );
/* */
/* Get parameters of the connect indication. */
/* Note that the parameter session_rqmnts_1, the */
/* service requirements structure, is set and will be */
/* used for the connect response, thereby accepting the */
/* service requirements set by application 2. */
/* */
error =
APS_ASSOC_GETPARAM_( cepi_1
, /* conid */
, (int *) &local_appl