OSI/AS Programming Manual

Example 2: Presentation Layer and ACSE
Sample Programs
E–58 056783 Tandem Computers Incorporated
error =
APS_ASSOC_GETPARAM_( cepi
, /* conid */
, /* local-appl */
, (int *) &remote_appl
, &connect_result
, (int *) &session_rqmnts
, /* release-result */
, /* abort-reason */
, /* mode */
, /* pres-context-list */
, (int *) &pres_context_result_list
, /* pres-default-context-name */
, &pres_default_context_result
, (int *) &acse_appl_context_name
, /* acse-local-ae-title */
, (int *) &acse_remote_ae_title
, /* acse-local-invocation-ids */
, (int *) &acse_remote_invocation_ids
, &acse_result_source
, &acse_diagnostic
, /* acse-release-reason */
, /* acse-abort-source */
);
if ( error != ZAPS_ERR_OK )
display_aps_error( error_assoc_getparam_proc );
/* */
/* A real application would check the session-rqmnts, */
/* pres-context-result-list, and so forth to make sure */
/* that all is well. */
/* */
/* */
/* Get associate confirm user data. */
/* */
retrieve_user_data();
/* */
/* Set up data. */
/* normally, this would be generated by an */
/* ASN.1 compiler. */
/* */
user_data.header.znum_elements = 1;
user_data.element.ztype = ZAPS_VAL_DATA_TYPE_VALUE;
user_data.element.zpcid = 1;
user_data.value[ 0 ] = 0x04; /* octet string */
user_data.value[ 1 ] = 7; /* length */
memcpy( &user_data.value[ 2 ]
, "datareq"
, 7 ); /* data */
user_data.element.zlen = 9;
/* */
/* Set up the tokens, so they can be given away. */