--- /dev/null
+/*
+ * $Id: zoomtst4.c,v 1.1 2001-10-23 21:00:20 adam Exp $
+ *
+ * Asynchronous multi-target going through proxy doing search and retrieve
+ * using present.
+ */
+
+#include <stdio.h>
+#include <yaz/xmalloc.h>
+
+#include <yaz/zoom.h>
+
+const char *my_callback (void *handle, const char *name)
+{
+ if (!strcmp (name, "async"))
+ return "1";
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ int i;
+ int no = argc-3;
+ Z3950_connection z[500]; /* allow at most 500 connections */
+ Z3950_resultset r[500]; /* and result sets .. */
+ Z3950_search s;
+ Z3950_options o = Z3950_options_create ();
+
+ if (argc < 4)
+ {
+ fprintf (stderr, "usage:\n%s proxy target1 .. targetN query\n",
+ *argv);
+ exit (2);
+ }
+ if (no > 500)
+ no = 500;
+
+ /* function my_callback called when reading options .. */
+ Z3950_options_set_callback (o, my_callback, 0);
+
+ /* get 20 (at most) records from offset 5 */
+ Z3950_options_set (o, "start", "5");
+ Z3950_options_set (o, "count", "20");
+
+ /* set proxy */
+ Z3950_options_set (o, "proxy", argv[1]);
+
+ /* create query */
+ s = Z3950_search_create ();
+ if (Z3950_search_prefix (s, argv[argc-1]))
+ {
+ printf ("bad PQF: %s\n", argv[argc-1]);
+ exit (1);
+ }
+ /* connect - and search all */
+ for (i = 0; i<no; i++)
+ {
+ z[i] = Z3950_connection_create (o);
+ Z3950_connection_connect (z[i], argv[i+2], 0);
+ r[i] = Z3950_connection_search (z[i], s);
+ }
+
+ /* network I/O */
+ while (Z3950_event (no, z))
+ ;
+
+ /* handle errors */
+ for (i = 0; i<no; i++)
+ {
+ int error;
+ const char *errmsg, *addinfo;
+ if ((error = Z3950_connection_error(z[i], &errmsg, &addinfo)))
+ fprintf (stderr, "%s error: %s (%d) %s\n",
+ Z3950_connection_host(z[i]), errmsg, error, addinfo);
+ }
+
+ /* destroy stuff and exit */
+ Z3950_search_destroy (s);
+ for (i = 0; i<no; i++)
+ {
+ Z3950_resultset_destroy (r[i]);
+ Z3950_connection_destroy (z[i]);
+ }
+ Z3950_options_destroy(o);
+ exit (0);
+}