Adding upstream version 1:9.11.5.P4+dfsg.upstream/1%9.11.5.P4+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

45 files changed, 6838 insertions, 0 deletions

diff --git a/lib/samples/Makefile-postinstall.in b/lib/samples/Makefile-postinstall.in
new file mode 100644
index 0000000..aa512f1
--- /dev/null
+++ b/lib/samples/Makefile-postinstall.in
@@ -0,0 +1,73 @@
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+# $Id: Makefile-postinstall.in,v 1.3 2009/09/02 23:48:02 tbox Exp $
+
+srcdir =	@srcdir@
+#prefix =	@prefix@
+#exec_prefix =	@exec_prefix@
+
+CDEFINES =
+CWARNINGS =
+
+DNSLIBS =	-ldns @DNS_CRYPTO_LIBS@
+ISCLIBS =	-lisc
+ISCCFGLIBS =	-lisccfg
+IRSLIBS =	-lirs
+
+LIBS =		${DNSLIBS} ${ISCCFGLIBS} ${ISCLIBS} @LIBS@
+
+SUBDIRS =
+
+TARGETS =	sample@EXEEXT@ sample-async@EXEEXT@ sample-gai@EXEEXT@ \
+		sample-update@EXEEXT@ sample-request@EXEEXT@ nsprobe@EXEEXT@ \
+		dlvchecks@EXEEXT@
+
+OBJS =		sample.@O@ sample-async.@O@ sample-gai.@O@ sample-update.@O@ \
+		sample-request.@O@ nsprobe.@O@ dlvchecks.@O@
+
+SRCS =		sample.c sample-async.c sample-gai.c sample-update.c \
+		sample-request.c nsprobe.c dlvchecks..c
+
+@BIND9_MAKE_RULES@
+
+# The following two may depend on BIND9_MAKE_RULES
+CINCLUDES =	-I@export_includedir@
+LDFLAGS =	-L@export_libdir@
+
+sample@EXEEXT@: sample.@O@ ${DEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
+	sample.@O@ ${LIBS}
+
+sample-async@EXEEXT@: sample-async.@O@ ${DEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
+	sample-async.@O@ ${LIBS}
+
+sample-gai@EXEEXT@: sample-gai.@O@ ${IRSDEPLIBS} ${DEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
+	sample-gai.@O@ ${IRSLIBS} ${LIBS}
+
+sample-update@EXEEXT@: sample-update.@O@ ${DEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
+	sample-update.@O@ ${LIBS}
+
+sample-request@EXEEXT@: sample-request.@O@ ${DEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
+	sample-request.@O@ ${LIBS}
+
+nsprobe@EXEEXT@: nsprobe.@O@ ${DEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
+	nsprobe.@O@ ${LIBS}
+
+dlvchecks@EXEEXT@: dlvchecks.@O@ ${DEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
+	dlvchecks.@O@ ${LIBS}
+
+clean distclean maintainer-clean::
+	rm -f ${TARGETS}
diff --git a/lib/samples/Makefile.in b/lib/samples/Makefile.in
new file mode 100644
index 0000000..7abdd8e
--- /dev/null
+++ b/lib/samples/Makefile.in
@@ -0,0 +1,96 @@
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+srcdir =	@srcdir@
+VPATH =		@srcdir@
+top_srcdir =	@top_srcdir@
+
+VERSION=@BIND9_VERSION@
+
+@BIND9_MAKE_INCLUDES@
+
+CINCLUDES =	-I${srcdir}/include -I../dns/include \
+		${DNS_INCLUDES} ${ISC_INCLUDES} \
+		-I${top_srcdir}/lib/irs/include \
+		-I../../lib/irs/include @ISC_OPENSSL_INC@
+
+CDEFINES =	@CRYPTO@ -DVERSION=\"${VERSION}\" \
+		-DSYSCONFDIR=\"${sysconfdir}\"
+CWARNINGS =
+
+ISCLIBS =	../isc/libisc.@A@
+DNSLIBS =	../dns/libdns.@A@ @DNS_CRYPTO_LIBS@
+ISCCFGLIBS =	../isccfg/libisccfg.@A@
+IRSLIBS =	../irs/libirs.@A@
+
+ISCDEPLIBS =	../isc/libisc.@A@
+DNSDEPLIBS =	../dns/libdns.@A@
+ISCCFGDEPLIBS =	../isccfg/libisccfg.@A@
+IRSDEPLIBS =	../irs/libirs.@A@
+
+DEPLIBS =	${DNSDEPLIBS} ${ISCCFGDEPLIBS} ${ISCDEPLIBS}
+
+LIBS =		${DNSLIBS} ${ISCCFGLIBS} ${ISCLIBS} @LIBS@
+
+SUBDIRS =
+
+TARGETS =	resolve@EXEEXT@ \
+		sample-async@EXEEXT@ sample-gai@EXEEXT@ \
+		sample-update@EXEEXT@ sample-request@EXEEXT@ nsprobe@EXEEXT@
+
+OBJS =		resolve.@O@ \
+		sample-async.@O@ sample-gai.@O@ sample-update.@O@ \
+		sample-request.@O@ nsprobe.@O@
+
+UOBJS =
+
+SRCS =		resolve.c \
+		sample-async.c sample-gai.c sample-update.c \
+		sample-request.c nsprobe.c
+
+MANPAGES =
+
+HTMLPAGES =
+
+MANOBJS =	${MANPAGES} ${HTMLPAGES}
+
+@BIND9_MAKE_RULES@
+
+resolve@EXEEXT@: resolve.@O@ ${IRSDEPLIBS} ${DEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
+	resolve.@O@ ${IRSLIBS} ${LIBS}
+
+sample-async@EXEEXT@: sample-async.@O@ ${DEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
+	sample-async.@O@ ${LIBS}
+
+sample-gai@EXEEXT@: sample-gai.@O@ ${IRSDEPLIBS} ${DEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
+	sample-gai.@O@ ${IRSLIBS} ${LIBS}
+
+sample-update@EXEEXT@: sample-update.@O@ ${DEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
+	sample-update.@O@ ${LIBS}
+
+sample-request@EXEEXT@: sample-request.@O@ ${DEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
+	sample-request.@O@ ${LIBS}
+
+nsprobe@EXEEXT@: nsprobe.@O@ ${DEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
+	nsprobe.@O@ ${LIBS}
+
+doc man:: ${MANOBJS}
+
+docclean manclean maintainer-clean::
+	rm -f ${MANOBJS}
+
+clean distclean maintainer-clean::
+	rm -f ${TARGETS}
+	rm -f sample.key
diff --git a/lib/samples/nsprobe.c b/lib/samples/nsprobe.c
new file mode 100644
index 0000000..2ebb19a
--- /dev/null
+++ b/lib/samples/nsprobe.c
@@ -0,0 +1,1216 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+
+#include <config.h>
+
+#ifndef WIN32
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <unistd.h>
+#include <netdb.h>
+#endif
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <isc/app.h>
+#include <isc/buffer.h>
+#include <isc/commandline.h>
+#include <isc/lib.h>
+#include <isc/mem.h>
+#include <isc/print.h>
+#include <isc/socket.h>
+#include <isc/sockaddr.h>
+#include <isc/string.h>
+#include <isc/task.h>
+#include <isc/timer.h>
+#include <isc/util.h>
+
+#include <dns/client.h>
+#include <dns/fixedname.h>
+#include <dns/lib.h>
+#include <dns/message.h>
+#include <dns/name.h>
+#include <dns/rdata.h>
+#include <dns/rdataset.h>
+#include <dns/rdatastruct.h>
+#include <dns/rdatatype.h>
+#include <dns/result.h>
+
+#define MAX_PROBES 1000
+
+static dns_client_t *client = NULL;
+static isc_task_t *probe_task = NULL;
+static isc_appctx_t *actx = NULL;
+static isc_mem_t *mctx = NULL;
+static unsigned int outstanding_probes = 0;
+const char *cacheserver = "127.0.0.1";
+static FILE *input;
+
+typedef enum {
+	none,
+	exist,
+	nxdomain,
+	othererr,
+	multiplesoa,
+	multiplecname,
+	brokenanswer,
+	lame,
+	timedout,
+	notype,
+	unexpected
+} query_result_t;
+
+struct server {
+	ISC_LINK(struct server) link;
+
+	isc_sockaddr_t address;
+	query_result_t result_a;
+	query_result_t result_aaaa;
+};
+
+struct probe_ns {
+	ISC_LINK(struct probe_ns) link;
+
+	dns_fixedname_t fixedname;
+	dns_name_t *name;
+	struct server *current_server;
+	ISC_LIST(struct server) servers;
+};
+
+struct probe_trans {
+	bool inuse;
+	char *domain;
+	dns_fixedname_t fixedname;
+	dns_name_t *qname;
+	const char **qlabel;
+	bool qname_found;
+	dns_clientrestrans_t *resid;
+	dns_message_t *qmessage;
+	dns_message_t *rmessage;
+	dns_clientreqtrans_t *reqid;
+
+	/* NS list */
+	struct probe_ns *current_ns;
+	ISC_LIST(struct probe_ns) nslist;
+};
+
+struct lcl_stat {
+	unsigned long valid;
+	unsigned long ignore;
+	unsigned long nxdomain;
+	unsigned long othererr;
+	unsigned long multiplesoa;
+	unsigned long multiplecname;
+	unsigned long brokenanswer;
+	unsigned long lame;
+	unsigned long unknown;
+} server_stat, domain_stat;
+
+static unsigned long number_of_domains = 0;
+static unsigned long number_of_servers = 0;
+static unsigned long multiple_error_domains = 0;
+static bool debug_mode = false;
+static int verbose_level = 0;
+static const char *qlabels[] = {"www.", "ftp.", NULL};
+static struct probe_trans probes[MAX_PROBES];
+
+static isc_result_t probe_domain(struct probe_trans *trans);
+static void reset_probe(struct probe_trans *trans);
+static isc_result_t fetch_nsaddress(struct probe_trans *trans);
+static isc_result_t probe_name(struct probe_trans *trans,
+			       dns_rdatatype_t type);
+
+/* Dump an rdataset for debug */
+static isc_result_t
+print_rdataset(dns_rdataset_t *rdataset, dns_name_t *owner) {
+	isc_buffer_t target;
+	isc_result_t result;
+	isc_region_t r;
+	char t[4096];
+
+	if (!debug_mode)
+		return (ISC_R_SUCCESS);
+
+	isc_buffer_init(&target, t, sizeof(t));
+
+	if (!dns_rdataset_isassociated(rdataset))
+		return (ISC_R_SUCCESS);
+	result = dns_rdataset_totext(rdataset, owner, false, false,
+				     &target);
+	if (result != ISC_R_SUCCESS)
+		return (result);
+	isc_buffer_usedregion(&target, &r);
+	printf("%.*s", (int)r.length, (char *)r.base);
+
+	return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+print_name(dns_name_t *name) {
+	isc_result_t result;
+	isc_buffer_t target;
+	isc_region_t r;
+	char t[4096];
+
+	isc_buffer_init(&target, t, sizeof(t));
+	result = dns_name_totext(name, true, &target);
+	if (result == ISC_R_SUCCESS) {
+		isc_buffer_usedregion(&target, &r);
+		printf("%.*s", (int)r.length, (char *)r.base);
+	} else
+		printf("(invalid name)");
+
+	return (result);
+}
+
+static isc_result_t
+print_address(FILE *fp, isc_sockaddr_t *addr) {
+	char buf[NI_MAXHOST];
+
+	if (getnameinfo(&addr->type.sa, addr->length, buf, sizeof(buf),
+			NULL, 0, NI_NUMERICHOST) == 0) {
+		fprintf(fp, "%s", buf);
+	} else {
+		fprintf(fp, "(invalid address)");
+	}
+
+	return (ISC_R_SUCCESS);
+}
+
+static void
+ctxs_destroy(isc_mem_t **mctxp, isc_appctx_t **actxp,
+	     isc_taskmgr_t **taskmgrp, isc_socketmgr_t **socketmgrp,
+	     isc_timermgr_t **timermgrp)
+{
+	if (*taskmgrp != NULL)
+		isc_taskmgr_destroy(taskmgrp);
+
+	if (*timermgrp != NULL)
+		isc_timermgr_destroy(timermgrp);
+
+	if (*socketmgrp != NULL)
+		isc_socketmgr_destroy(socketmgrp);
+
+	if (*actxp != NULL)
+		isc_appctx_destroy(actxp);
+
+	if (*mctxp != NULL)
+		isc_mem_destroy(mctxp);
+}
+
+static isc_result_t
+ctxs_init(isc_mem_t **mctxp, isc_appctx_t **actxp,
+	  isc_taskmgr_t **taskmgrp, isc_socketmgr_t **socketmgrp,
+	  isc_timermgr_t **timermgrp)
+{
+	isc_result_t result;
+
+	result = isc_mem_create(0, 0, mctxp);
+	if (result != ISC_R_SUCCESS)
+		goto fail;
+
+	result = isc_appctx_create(*mctxp, actxp);
+	if (result != ISC_R_SUCCESS)
+		goto fail;
+
+	result = isc_taskmgr_createinctx(*mctxp, *actxp, 1, 0, taskmgrp);
+	if (result != ISC_R_SUCCESS)
+		goto fail;
+
+	result = isc_socketmgr_createinctx(*mctxp, *actxp, socketmgrp);
+	if (result != ISC_R_SUCCESS)
+		goto fail;
+
+	result = isc_timermgr_createinctx(*mctxp, *actxp, timermgrp);
+	if (result != ISC_R_SUCCESS)
+		goto fail;
+
+	return (ISC_R_SUCCESS);
+
+ fail:
+	ctxs_destroy(mctxp, actxp, taskmgrp, socketmgrp, timermgrp);
+
+	return (result);
+}
+
+/*
+ * Common routine to make query data
+ */
+static isc_result_t
+make_querymessage(dns_message_t *message, dns_name_t *qname0,
+		  dns_rdatatype_t rdtype)
+{
+	dns_name_t *qname = NULL;
+	dns_rdataset_t *qrdataset = NULL;
+	isc_result_t result;
+
+	message->opcode = dns_opcode_query;
+	message->rdclass = dns_rdataclass_in;
+
+	result = dns_message_gettempname(message, &qname);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup;
+
+	result = dns_message_gettemprdataset(message, &qrdataset);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup;
+
+	dns_name_init(qname, NULL);
+	dns_name_clone(qname0, qname);
+	dns_rdataset_makequestion(qrdataset, message->rdclass, rdtype);
+	ISC_LIST_APPEND(qname->list, qrdataset, link);
+	dns_message_addname(message, qname, DNS_SECTION_QUESTION);
+
+	return (ISC_R_SUCCESS);
+
+ cleanup:
+	if (qname != NULL)
+		dns_message_puttempname(message, &qname);
+	if (qrdataset != NULL)
+		dns_message_puttemprdataset(message, &qrdataset);
+	return (result);
+}
+
+/*
+ * Update statistics
+ */
+static inline void
+increment_entry(unsigned long *entryp) {
+	(*entryp)++;
+	INSIST(*entryp != 0U);	/* check overflow */
+}
+
+static void
+update_stat(struct probe_trans *trans) {
+	struct probe_ns *pns;
+	struct server *server;
+	struct lcl_stat local_stat;
+	unsigned int err_count = 0;
+	const char *stattype;
+
+	increment_entry(&number_of_domains);
+	memset(&local_stat, 0, sizeof(local_stat));
+
+	/* Update per sever statistics */
+	for (pns = ISC_LIST_HEAD(trans->nslist); pns != NULL;
+	     pns = ISC_LIST_NEXT(pns, link)) {
+		for (server = ISC_LIST_HEAD(pns->servers); server != NULL;
+		     server = ISC_LIST_NEXT(server, link)) {
+			increment_entry(&number_of_servers);
+
+			if (server->result_aaaa == exist ||
+			    server->result_aaaa == notype) {
+				/*
+				 * Don't care about the result of A query if
+				 * the answer to AAAA query was expected.
+				 */
+				stattype = "valid";
+				increment_entry(&server_stat.valid);
+				increment_entry(&local_stat.valid);
+			} else if (server->result_a == exist) {
+				switch (server->result_aaaa) {
+				case exist:
+				case notype:
+					stattype = "valid";
+					increment_entry(&server_stat.valid);
+					increment_entry(&local_stat.valid);
+					break;
+				case timedout:
+					stattype = "ignore";
+					increment_entry(&server_stat.ignore);
+					increment_entry(&local_stat.ignore);
+					break;
+				case nxdomain:
+					stattype = "nxdomain";
+					increment_entry(&server_stat.nxdomain);
+					increment_entry(&local_stat.nxdomain);
+					break;
+				case othererr:
+					stattype = "othererr";
+					increment_entry(&server_stat.othererr);
+					increment_entry(&local_stat.othererr);
+					break;
+				case multiplesoa:
+					stattype = "multiplesoa";
+					increment_entry(&server_stat.multiplesoa);
+					increment_entry(&local_stat.multiplesoa);
+					break;
+				case multiplecname:
+					stattype = "multiplecname";
+					increment_entry(&server_stat.multiplecname);
+					increment_entry(&local_stat.multiplecname);
+					break;
+				case brokenanswer:
+					stattype = "brokenanswer";
+					increment_entry(&server_stat.brokenanswer);
+					increment_entry(&local_stat.brokenanswer);
+					break;
+				case lame:
+					stattype = "lame";
+					increment_entry(&server_stat.lame);
+					increment_entry(&local_stat.lame);
+					break;
+				default:
+					stattype = "unknown";
+					increment_entry(&server_stat.unknown);
+					increment_entry(&local_stat.unknown);
+					break;
+				}
+			} else {
+				stattype = "unknown";
+				increment_entry(&server_stat.unknown);
+				increment_entry(&local_stat.unknown);
+			}
+
+			if (verbose_level > 1 ||
+			    (verbose_level == 1 &&
+			     strcmp(stattype, "valid") != 0 &&
+			     strcmp(stattype, "unknown") != 0)) {
+				print_name(pns->name);
+				putchar('(');
+				print_address(stdout, &server->address);
+				printf(") for %s:%s\n", trans->domain,
+				       stattype);
+			}
+		}
+	}
+
+	/* Update per domain statistics */
+	if (local_stat.ignore > 0U) {
+		if (verbose_level > 0)
+			printf("%s:ignore\n", trans->domain);
+		increment_entry(&domain_stat.ignore);
+		err_count++;
+	}
+	if (local_stat.nxdomain > 0U) {
+		if (verbose_level > 0)
+			printf("%s:nxdomain\n", trans->domain);
+		increment_entry(&domain_stat.nxdomain);
+		err_count++;
+	}
+	if (local_stat.othererr > 0U) {
+		if (verbose_level > 0)
+			printf("%s:othererr\n", trans->domain);
+		increment_entry(&domain_stat.othererr);
+		err_count++;
+	}
+	if (local_stat.multiplesoa > 0U) {
+		if (verbose_level > 0)
+			printf("%s:multiplesoa\n", trans->domain);
+		increment_entry(&domain_stat.multiplesoa);
+		err_count++;
+	}
+	if (local_stat.multiplecname > 0U) {
+		if (verbose_level > 0)
+			printf("%s:multiplecname\n", trans->domain);
+		increment_entry(&domain_stat.multiplecname);
+		err_count++;
+	}
+	if (local_stat.brokenanswer > 0U) {
+		if (verbose_level > 0)
+			printf("%s:brokenanswer\n", trans->domain);
+		increment_entry(&domain_stat.brokenanswer);
+		err_count++;
+	}
+	if (local_stat.lame > 0U) {
+		if (verbose_level > 0)
+			printf("%s:lame\n", trans->domain);
+		increment_entry(&domain_stat.lame);
+		err_count++;
+	}
+
+	if (err_count > 1U)
+		increment_entry(&multiple_error_domains);
+
+	/*
+	 * We regard the domain as valid if and only if no authoritative server
+	 * has a problem and at least one server is known to be valid.
+	 */
+	if (local_stat.valid > 0U && err_count == 0U) {
+		if (verbose_level > 1)
+			printf("%s:valid\n", trans->domain);
+		increment_entry(&domain_stat.valid);
+	}
+
+	/*
+	 * If the domain has no available server or all servers have the
+	 * 'unknown' result, the domain's result is also regarded as unknown.
+	 */
+	if (local_stat.valid == 0U && err_count == 0U) {
+		if (verbose_level > 1)
+			printf("%s:unknown\n", trans->domain);
+		increment_entry(&domain_stat.unknown);
+	}
+}
+
+/*
+ * Search for an existent name with an A RR
+ */
+
+static isc_result_t
+set_nextqname(struct probe_trans *trans) {
+	isc_result_t result;
+	unsigned int domainlen;
+	isc_buffer_t b;
+	char buf[4096];	/* XXX ad-hoc constant, but should be enough */
+
+	if (*trans->qlabel == NULL)
+		return (ISC_R_NOMORE);
+
+	result = isc_string_copy(buf, sizeof(buf), *trans->qlabel);
+	if (result != ISC_R_SUCCESS)
+		return (result);
+	result = isc_string_append(buf, sizeof(buf), trans->domain);
+	if (result != ISC_R_SUCCESS)
+		return (result);
+
+	domainlen = strlen(buf);
+	isc_buffer_init(&b, buf, domainlen);
+	isc_buffer_add(&b, domainlen);
+	trans->qname = dns_fixedname_initname(&trans->fixedname);
+	result = dns_name_fromtext(trans->qname, &b, dns_rootname,
+				   0, NULL);
+
+	trans->qlabel++;
+
+	return (result);
+}
+
+static void
+request_done(isc_task_t *task, isc_event_t *event) {
+	struct probe_trans *trans = event->ev_arg;
+	dns_clientreqevent_t *rev = (dns_clientreqevent_t *)event;
+	dns_message_t *rmessage;
+	struct probe_ns *pns;
+	struct server *server;
+	isc_result_t result;
+	query_result_t *resultp;
+	dns_name_t *name;
+	dns_rdataset_t *rdataset;
+	dns_rdatatype_t type;
+
+	REQUIRE(task == probe_task);
+	REQUIRE(trans != NULL && trans->inuse == true);
+	rmessage = rev->rmessage;
+	REQUIRE(rmessage == trans->rmessage);
+	INSIST(outstanding_probes > 0);
+
+	server = trans->current_ns->current_server;
+	INSIST(server != NULL);
+
+	if (server->result_a == none) {
+		type = dns_rdatatype_a;
+		resultp = &server->result_a;
+	} else {
+		resultp = &server->result_aaaa;
+		type = dns_rdatatype_aaaa;
+	}
+
+	if (rev->result == ISC_R_SUCCESS) {
+		if ((rmessage->flags & DNS_MESSAGEFLAG_AA) == 0)
+			*resultp = lame;
+		else if (rmessage->rcode == dns_rcode_nxdomain)
+			*resultp = nxdomain;
+		else if (rmessage->rcode != dns_rcode_noerror)
+			*resultp = othererr;
+		else if (rmessage->counts[DNS_SECTION_ANSWER] == 0) {
+			/* no error but empty answer */
+			*resultp = notype;
+		} else {
+			result = dns_message_firstname(rmessage,
+						       DNS_SECTION_ANSWER);
+			while (result == ISC_R_SUCCESS) {
+				name = NULL;
+				dns_message_currentname(rmessage,
+							DNS_SECTION_ANSWER,
+							&name);
+				for (rdataset = ISC_LIST_HEAD(name->list);
+				     rdataset != NULL;
+				     rdataset = ISC_LIST_NEXT(rdataset,
+							      link)) {
+					(void)print_rdataset(rdataset, name);
+
+					if (rdataset->type ==
+					    dns_rdatatype_cname ||
+					    rdataset->type ==
+					    dns_rdatatype_dname) {
+						/* Should chase the chain? */
+						*resultp = exist;
+						goto found;
+					} else if (rdataset->type == type) {
+						*resultp = exist;
+						goto found;
+					}
+				}
+				result = dns_message_nextname(rmessage,
+							      DNS_SECTION_ANSWER);
+			}
+
+			/*
+			 * Something unexpected happened: the response
+			 * contained a non-empty authoritative answer, but we
+			 * could not find an expected result.
+			 */
+			*resultp = unexpected;
+		}
+	} else if (rev->result == DNS_R_RECOVERABLE ||
+		   rev->result == DNS_R_BADLABELTYPE) {
+		/* Broken response.  Try identifying known cases. */
+		*resultp = brokenanswer;
+
+		if (rmessage->counts[DNS_SECTION_ANSWER] > 0) {
+			result = dns_message_firstname(rmessage,
+						       DNS_SECTION_ANSWER);
+			while (result == ISC_R_SUCCESS) {
+				/*
+				 * Check to see if the response has multiple
+				 * CNAME RRs.  Update the result code if so.
+				 */
+				name = NULL;
+				dns_message_currentname(rmessage,
+							DNS_SECTION_ANSWER,
+							&name);
+				for (rdataset = ISC_LIST_HEAD(name->list);
+				     rdataset != NULL;
+				     rdataset = ISC_LIST_NEXT(rdataset,
+							      link)) {
+					if (rdataset->type ==
+					    dns_rdatatype_cname &&
+					    dns_rdataset_count(rdataset) > 1) {
+						*resultp = multiplecname;
+						goto found;
+					}
+				}
+				result = dns_message_nextname(rmessage,
+							      DNS_SECTION_ANSWER);
+			}
+		}
+
+		if (rmessage->counts[DNS_SECTION_AUTHORITY] > 0) {
+			result = dns_message_firstname(rmessage,
+						       DNS_SECTION_AUTHORITY);
+			while (result == ISC_R_SUCCESS) {
+				/*
+				 * Check to see if the response has multiple
+				 * SOA RRs.  Update the result code if so.
+				 */
+				name = NULL;
+				dns_message_currentname(rmessage,
+							DNS_SECTION_AUTHORITY,
+							&name);
+				for (rdataset = ISC_LIST_HEAD(name->list);
+				     rdataset != NULL;
+				     rdataset = ISC_LIST_NEXT(rdataset,
+							      link)) {
+					if (rdataset->type ==
+					    dns_rdatatype_soa &&
+					    dns_rdataset_count(rdataset) > 1) {
+						*resultp = multiplesoa;
+						goto found;
+					}
+				}
+				result = dns_message_nextname(rmessage,
+							      DNS_SECTION_AUTHORITY);
+			}
+		}
+	} else if (rev->result == ISC_R_TIMEDOUT)
+		*resultp = timedout;
+	else {
+		fprintf(stderr, "unexpected result: %u (domain=%s, server=",
+			rev->result, trans->domain);
+		print_address(stderr, &server->address);
+		fputc('\n', stderr);
+		*resultp = unexpected;
+	}
+
+ found:
+	INSIST(*resultp != none);
+	if (type == dns_rdatatype_a && *resultp == exist)
+		trans->qname_found = true;
+
+	dns_client_destroyreqtrans(&trans->reqid);
+	isc_event_free(&event);
+	dns_message_reset(trans->rmessage, DNS_MESSAGE_INTENTPARSE);
+
+	result = probe_name(trans, type);
+	if (result == ISC_R_NOMORE) {
+		/* We've tried all addresses of all servers. */
+		if (type == dns_rdatatype_a && trans->qname_found) {
+			/*
+			 * If we've explored A RRs and found an existent
+			 * record, we can move to AAAA.
+			 */
+			trans->current_ns = ISC_LIST_HEAD(trans->nslist);
+			probe_name(trans, dns_rdatatype_aaaa);
+			result = ISC_R_SUCCESS;
+		} else if (type == dns_rdatatype_a) {
+			/*
+			 * No server provided an existent A RR of this name.
+			 * Try next label.
+			 */
+			dns_fixedname_invalidate(&trans->fixedname);
+			trans->qname = NULL;
+			result = set_nextqname(trans);
+			if (result == ISC_R_SUCCESS) {
+				trans->current_ns =
+					ISC_LIST_HEAD(trans->nslist);
+				for (pns = trans->current_ns; pns != NULL;
+				     pns = ISC_LIST_NEXT(pns, link)) {
+					for (server = ISC_LIST_HEAD(pns->servers);
+					     server != NULL;
+					     server = ISC_LIST_NEXT(server,
+								    link)) {
+						INSIST(server->result_aaaa ==
+						       none);
+						server->result_a = none;
+					}
+				}
+				result = probe_name(trans, dns_rdatatype_a);
+			}
+		}
+		if (result != ISC_R_SUCCESS) {
+			/*
+			 * We've explored AAAA RRs or failed to find a valid
+			 * query label.  Wrap up the result and move to the
+			 * next domain.
+			 */
+			reset_probe(trans);
+		}
+	} else if (result != ISC_R_SUCCESS)
+		reset_probe(trans); /* XXX */
+}
+
+static isc_result_t
+probe_name(struct probe_trans *trans, dns_rdatatype_t type) {
+	isc_result_t result;
+	struct probe_ns *pns;
+	struct server *server;
+
+	REQUIRE(trans->reqid == NULL);
+	REQUIRE(type == dns_rdatatype_a || type == dns_rdatatype_aaaa);
+
+	for (pns = trans->current_ns; pns != NULL;
+	     pns = ISC_LIST_NEXT(pns, link)) {
+		for (server = ISC_LIST_HEAD(pns->servers); server != NULL;
+		     server = ISC_LIST_NEXT(server, link)) {
+			if ((type == dns_rdatatype_a &&
+			     server->result_a == none) ||
+			    (type == dns_rdatatype_aaaa &&
+			     server->result_aaaa == none)) {
+				pns->current_server = server;
+				goto found;
+			}
+		}
+	}
+
+ found:
+	trans->current_ns = pns;
+	if (pns == NULL)
+		return (ISC_R_NOMORE);
+
+	INSIST(pns->current_server != NULL);
+	dns_message_reset(trans->qmessage, DNS_MESSAGE_INTENTRENDER);
+	result = make_querymessage(trans->qmessage, trans->qname, type);
+	if (result != ISC_R_SUCCESS)
+		return (result);
+	result = dns_client_startrequest(client, trans->qmessage,
+					 trans->rmessage,
+					 &pns->current_server->address,
+					 0, DNS_MESSAGEPARSE_BESTEFFORT,
+					 NULL, 120, 0, 4,
+					 probe_task, request_done, trans,
+					 &trans->reqid);
+
+	return (result);
+}
+
+/*
+ * Get IP addresses of NSes
+ */
+
+static void
+resolve_nsaddress(isc_task_t *task, isc_event_t *event) {
+	struct probe_trans *trans = event->ev_arg;
+	dns_clientresevent_t *rev = (dns_clientresevent_t *)event;
+	dns_name_t *name;
+	dns_rdataset_t *rdataset;
+	dns_rdata_t rdata = DNS_RDATA_INIT;
+	struct probe_ns *pns = trans->current_ns;
+	isc_result_t result;
+
+	REQUIRE(task == probe_task);
+	REQUIRE(trans->inuse == true);
+	REQUIRE(pns != NULL);
+	INSIST(outstanding_probes > 0);
+
+	for (name = ISC_LIST_HEAD(rev->answerlist); name != NULL;
+	     name = ISC_LIST_NEXT(name, link)) {
+		for (rdataset = ISC_LIST_HEAD(name->list);
+		     rdataset != NULL;
+		     rdataset = ISC_LIST_NEXT(rdataset, link)) {
+			(void)print_rdataset(rdataset, name);
+
+			if (rdataset->type != dns_rdatatype_a)
+				continue;
+
+			for (result = dns_rdataset_first(rdataset);
+			     result == ISC_R_SUCCESS;
+			     result = dns_rdataset_next(rdataset)) {
+				dns_rdata_in_a_t rdata_a;
+				struct server *server;
+
+				dns_rdataset_current(rdataset, &rdata);
+				result = dns_rdata_tostruct(&rdata, &rdata_a,
+							    NULL);
+				if (result != ISC_R_SUCCESS)
+					continue;
+
+				server = isc_mem_get(mctx, sizeof(*server));
+				if (server == NULL) {
+					fprintf(stderr, "resolve_nsaddress: "
+						"mem_get failed");
+					result = ISC_R_NOMEMORY;
+					POST(result);
+					goto cleanup;
+				}
+				isc_sockaddr_fromin(&server->address,
+						    &rdata_a.in_addr, 53);
+				ISC_LINK_INIT(server, link);
+				server->result_a = none;
+				server->result_aaaa = none;
+				ISC_LIST_APPEND(pns->servers, server, link);
+			}
+		}
+	}
+
+ cleanup:
+	dns_client_freeresanswer(client, &rev->answerlist);
+	dns_client_destroyrestrans(&trans->resid);
+	isc_event_free(&event);
+
+ next_ns:
+	trans->current_ns = ISC_LIST_NEXT(pns, link);
+	if (trans->current_ns == NULL) {
+		trans->current_ns = ISC_LIST_HEAD(trans->nslist);
+		dns_fixedname_invalidate(&trans->fixedname);
+		trans->qname = NULL;
+		result = set_nextqname(trans);
+		if (result == ISC_R_SUCCESS)
+			 result = probe_name(trans, dns_rdatatype_a);
+	} else {
+		result = fetch_nsaddress(trans);
+		if (result != ISC_R_SUCCESS)
+			goto next_ns; /* XXX: this is unlikely to succeed */
+	}
+
+	if (result != ISC_R_SUCCESS)
+		reset_probe(trans);
+}
+
+static isc_result_t
+fetch_nsaddress(struct probe_trans *trans) {
+	struct probe_ns *pns;
+
+	pns = trans->current_ns;
+	REQUIRE(pns != NULL);
+
+	return (dns_client_startresolve(client, pns->name, dns_rdataclass_in,
+					dns_rdatatype_a, 0, probe_task,
+					resolve_nsaddress, trans,
+					&trans->resid));
+}
+
+/*
+ * Get NS RRset for a given domain
+ */
+
+static void
+reset_probe(struct probe_trans *trans) {
+	struct probe_ns *pns;
+	struct server *server;
+	isc_result_t result;
+
+	REQUIRE(trans->resid == NULL);
+	REQUIRE(trans->reqid == NULL);
+
+	update_stat(trans);
+
+	dns_message_reset(trans->qmessage, DNS_MESSAGE_INTENTRENDER);
+	dns_message_reset(trans->rmessage, DNS_MESSAGE_INTENTPARSE);
+
+	trans->inuse = false;
+	if (trans->domain != NULL)
+		isc_mem_free(mctx, trans->domain);
+	trans->domain = NULL;
+	if (trans->qname != NULL)
+		dns_fixedname_invalidate(&trans->fixedname);
+	trans->qname = NULL;
+	trans->qlabel = qlabels;
+	trans->qname_found = false;
+	trans->current_ns = NULL;
+
+	while ((pns = ISC_LIST_HEAD(trans->nslist)) != NULL) {
+		ISC_LIST_UNLINK(trans->nslist, pns, link);
+		while ((server = ISC_LIST_HEAD(pns->servers)) != NULL) {
+			ISC_LIST_UNLINK(pns->servers, server, link);
+			isc_mem_put(mctx, server, sizeof(*server));
+		}
+		isc_mem_put(mctx, pns, sizeof(*pns));
+	}
+
+	outstanding_probes--;
+
+	result = probe_domain(trans);
+	if (result == ISC_R_NOMORE && outstanding_probes == 0)
+		isc_app_ctxshutdown(actx);
+}
+
+static void
+resolve_ns(isc_task_t *task, isc_event_t *event) {
+	struct probe_trans *trans = event->ev_arg;
+	dns_clientresevent_t *rev = (dns_clientresevent_t *)event;
+	dns_name_t *name;
+	dns_rdataset_t *rdataset;
+	isc_result_t result = ISC_R_SUCCESS;
+	dns_rdata_t rdata = DNS_RDATA_INIT;
+	struct probe_ns *pns;
+
+	REQUIRE(task == probe_task);
+	REQUIRE(trans->inuse == true);
+	INSIST(outstanding_probes > 0);
+
+	for (name = ISC_LIST_HEAD(rev->answerlist); name != NULL;
+	     name = ISC_LIST_NEXT(name, link)) {
+		for (rdataset = ISC_LIST_HEAD(name->list);
+		     rdataset != NULL;
+		     rdataset = ISC_LIST_NEXT(rdataset, link)) {
+			(void)print_rdataset(rdataset, name);
+
+			if (rdataset->type != dns_rdatatype_ns)
+				continue;
+
+			for (result = dns_rdataset_first(rdataset);
+			     result == ISC_R_SUCCESS;
+			     result = dns_rdataset_next(rdataset)) {
+				dns_rdata_ns_t ns;
+
+				dns_rdataset_current(rdataset, &rdata);
+				/*
+				 * Extract the name from the NS record.
+				 */
+				result = dns_rdata_tostruct(&rdata, &ns, NULL);
+				if (result != ISC_R_SUCCESS)
+					continue;
+
+				pns = isc_mem_get(mctx, sizeof(*pns));
+				if (pns == NULL) {
+					fprintf(stderr,
+						"resolve_ns: mem_get failed");
+					result = ISC_R_NOMEMORY;
+					POST(result);
+					/*
+					 * XXX: should we continue with the
+					 * available servers anyway?
+					 */
+					goto cleanup;
+				}
+
+				pns->name =
+				       dns_fixedname_initname(&pns->fixedname);
+				ISC_LINK_INIT(pns, link);
+				ISC_LIST_APPEND(trans->nslist, pns, link);
+				ISC_LIST_INIT(pns->servers);
+
+				dns_name_copy(&ns.name, pns->name, NULL);
+				dns_rdata_reset(&rdata);
+				dns_rdata_freestruct(&ns);
+			}
+		}
+	}
+
+ cleanup:
+	dns_client_freeresanswer(client, &rev->answerlist);
+	dns_client_destroyrestrans(&trans->resid);
+	isc_event_free(&event);
+
+	if (!ISC_LIST_EMPTY(trans->nslist)) {
+		/* Go get addresses of NSes */
+		trans->current_ns = ISC_LIST_HEAD(trans->nslist);
+		result = fetch_nsaddress(trans);
+	} else
+		result = ISC_R_FAILURE;
+
+	if (result == ISC_R_SUCCESS)
+		return;
+
+	reset_probe(trans);
+}
+
+static isc_result_t
+probe_domain(struct probe_trans *trans) {
+	isc_result_t result;
+	unsigned int domainlen;
+	isc_buffer_t b;
+	char buf[4096];	/* XXX ad hoc constant, but should be enough */
+	char *cp;
+
+	REQUIRE(trans != NULL);
+	REQUIRE(trans->inuse == false);
+	REQUIRE(outstanding_probes < MAX_PROBES);
+
+	/* Construct domain */
+	cp = fgets(buf, sizeof(buf), input);
+	if (cp == NULL)
+		return (ISC_R_NOMORE);
+	if ((cp = strchr(buf, '\n')) != NULL) /* zap NL if any */
+		*cp = '\0';
+	trans->domain = isc_mem_strdup(mctx, buf);
+	if (trans->domain == NULL) {
+		fprintf(stderr,
+			"failed to allocate memory for domain: %s", cp);
+		return (ISC_R_NOMEMORY);
+	}
+
+	/* Start getting NS for the domain */
+	domainlen = strlen(buf);
+	isc_buffer_init(&b, buf, domainlen);
+	isc_buffer_add(&b, domainlen);
+	trans->qname = dns_fixedname_initname(&trans->fixedname);
+	result = dns_name_fromtext(trans->qname, &b, dns_rootname, 0, NULL);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup;
+	result = dns_client_startresolve(client, trans->qname,
+					 dns_rdataclass_in, dns_rdatatype_ns,
+					 0, probe_task, resolve_ns, trans,
+					 &trans->resid);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup;
+
+	trans->inuse = true;
+	outstanding_probes++;
+
+	return (ISC_R_SUCCESS);
+
+ cleanup:
+	isc_mem_free(mctx, trans->domain);
+	dns_fixedname_invalidate(&trans->fixedname);
+
+	return (result);
+}
+
+ISC_PLATFORM_NORETURN_PRE static void
+usage(void) ISC_PLATFORM_NORETURN_POST;
+
+static void
+usage(void) {
+	fprintf(stderr, "usage: nsprobe [-d] [-v [-v...]] [-c cache_address] "
+		"[input_file]\n");
+
+	exit(1);
+}
+
+int
+main(int argc, char *argv[]) {
+	int i, ch, error;
+	struct addrinfo hints, *res;
+	isc_result_t result;
+	isc_sockaddr_t sa;
+	isc_sockaddrlist_t servers;
+	isc_taskmgr_t *taskmgr = NULL;
+	isc_socketmgr_t *socketmgr = NULL;
+	isc_timermgr_t *timermgr = NULL;
+
+	while ((ch = isc_commandline_parse(argc, argv, "c:dhv")) != -1) {
+		switch (ch) {
+		case 'c':
+			cacheserver = isc_commandline_argument;
+			break;
+		case 'd':
+			debug_mode = true;
+			break;
+		case 'h':
+			usage();
+			break;
+		case 'v':
+			verbose_level++;
+			break;
+		default:
+			usage();
+			break;
+		}
+	}
+
+	argc -= isc_commandline_index;
+	argv += isc_commandline_index;
+
+	/* Common set up */
+	isc_lib_register();
+	result = dns_lib_init();
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "dns_lib_init failed: %u\n", result);
+		exit(1);
+	}
+
+	result = ctxs_init(&mctx, &actx, &taskmgr, &socketmgr,
+			   &timermgr);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "ctx create failed: %u\n", result);
+		exit(1);
+	}
+
+	isc_app_ctxstart(actx);
+
+	result = dns_client_createx(mctx, actx, taskmgr, socketmgr,
+				    timermgr, 0, &client);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "dns_client_createx failed: %u\n", result);
+		exit(1);
+	}
+
+	/* Set local cache server */
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = AF_UNSPEC;
+	hints.ai_socktype = SOCK_DGRAM;
+	error = getaddrinfo(cacheserver, "53", &hints, &res);
+	if (error != 0) {
+		fprintf(stderr, "failed to convert server name (%s): %s\n",
+			cacheserver, gai_strerror(error));
+		exit(1);
+	}
+
+	if (res->ai_addrlen > sizeof(sa.type)) {
+		fprintf(stderr,
+			"assumption failure: addrlen is too long: %ld\n",
+			(long)res->ai_addrlen);
+		exit(1);
+	}
+	memmove(&sa.type.sa, res->ai_addr, res->ai_addrlen);
+	sa.length = (unsigned int)res->ai_addrlen;
+	freeaddrinfo(res);
+	ISC_LINK_INIT(&sa, link);
+	ISC_LIST_INIT(servers);
+	ISC_LIST_APPEND(servers, &sa, link);
+	result = dns_client_setservers(client, dns_rdataclass_in, NULL,
+				       &servers);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to set server: %u\n", result);
+		exit(1);
+	}
+
+	/* Create the main task */
+	probe_task = NULL;
+	result = isc_task_create(taskmgr, 0, &probe_task);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to create task: %u\n", result);
+		exit(1);
+	}
+
+	/* Open input file */
+	if (argc == 0)
+		input = stdin;
+	else {
+		input = fopen(argv[0], "r");
+		if (input == NULL) {
+			fprintf(stderr, "failed to open input file: %s\n",
+				argv[0]);
+			exit(1);
+		}
+	}
+
+	/* Set up and start probe */
+	for (i = 0; i < MAX_PROBES; i++) {
+		probes[i].inuse = false;
+		probes[i].domain = NULL;
+		dns_fixedname_init(&probes[i].fixedname);
+		probes[i].qname = NULL;
+		probes[i].qlabel = qlabels;
+		probes[i].qname_found = false;
+		probes[i].resid = NULL;
+		ISC_LIST_INIT(probes[i].nslist);
+		probes[i].reqid = NULL;
+
+		probes[i].qmessage = NULL;
+		result = dns_message_create(mctx, DNS_MESSAGE_INTENTRENDER,
+					    &probes[i].qmessage);
+		if (result == ISC_R_SUCCESS) {
+			result = dns_message_create(mctx,
+						    DNS_MESSAGE_INTENTPARSE,
+						    &probes[i].rmessage);
+		}
+		if (result != ISC_R_SUCCESS) {
+			fprintf(stderr, "initialization failure\n");
+			exit(1);
+		}
+	}
+	for (i = 0; i < MAX_PROBES; i++) {
+		result = probe_domain(&probes[i]);
+		if (result == ISC_R_NOMORE)
+			break;
+		else if (result != ISC_R_SUCCESS) {
+			fprintf(stderr, "failed to issue an initial probe\n");
+			exit(1);
+		}
+	}
+
+	/* Start event loop */
+	isc_app_ctxrun(actx);
+
+	/* Dump results */
+	printf("Per domain results (out of %lu domains):\n",
+	       number_of_domains);
+	printf("  valid: %lu\n"
+	       "  ignore: %lu\n"
+	       "  nxdomain: %lu\n"
+	       "  othererr: %lu\n"
+	       "  multiplesoa: %lu\n"
+	       "  multiplecname: %lu\n"
+	       "  brokenanswer: %lu\n"
+	       "  lame: %lu\n"
+	       "  unknown: %lu\n"
+	       "  multiple errors: %lu\n",
+	       domain_stat.valid, domain_stat.ignore, domain_stat.nxdomain,
+	       domain_stat.othererr, domain_stat.multiplesoa,
+	       domain_stat.multiplecname, domain_stat.brokenanswer,
+	       domain_stat.lame, domain_stat.unknown, multiple_error_domains);
+	printf("Per server results (out of %lu servers):\n",
+	       number_of_servers);
+	printf("  valid: %lu\n"
+	       "  ignore: %lu\n"
+	       "  nxdomain: %lu\n"
+	       "  othererr: %lu\n"
+	       "  multiplesoa: %lu\n"
+	       "  multiplecname: %lu\n"
+	       "  brokenanswer: %lu\n"
+	       "  lame: %lu\n"
+	       "  unknown: %lu\n",
+	       server_stat.valid, server_stat.ignore, server_stat.nxdomain,
+	       server_stat.othererr, server_stat.multiplesoa,
+	       server_stat.multiplecname, server_stat.brokenanswer,
+	       server_stat.lame, server_stat.unknown);
+
+	/* Cleanup */
+	for (i = 0; i < MAX_PROBES; i++) {
+		dns_message_destroy(&probes[i].qmessage);
+		dns_message_destroy(&probes[i].rmessage);
+	}
+	isc_task_detach(&probe_task);
+	dns_client_destroy(&client);
+	dns_lib_shutdown();
+	isc_app_ctxfinish(actx);
+	ctxs_destroy(&mctx, &actx, &taskmgr, &socketmgr, &timermgr);
+
+	return (0);
+}
diff --git a/lib/samples/resolve.c b/lib/samples/resolve.c
new file mode 100644
index 0000000..30389fc
--- /dev/null
+++ b/lib/samples/resolve.c
@@ -0,0 +1,494 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#include <config.h>
+
+#ifndef WIN32
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+
+#include <arpa/inet.h>
+
+#include <netdb.h>
+#include <unistd.h>
+#endif
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <isc/base64.h>
+#include <isc/buffer.h>
+#include <isc/commandline.h>
+#include <isc/lib.h>
+#include <isc/mem.h>
+#include <isc/print.h>
+#include <isc/sockaddr.h>
+#include <isc/util.h>
+#include <isc/app.h>
+#include <isc/task.h>
+#include <isc/socket.h>
+#include <isc/timer.h>
+
+#include <irs/resconf.h>
+#include <irs/netdb.h>
+
+#include <dns/client.h>
+#include <dns/fixedname.h>
+#include <dns/keyvalues.h>
+#include <dns/lib.h>
+#include <dns/name.h>
+#include <dns/rdata.h>
+#include <dns/rdataset.h>
+#include <dns/rdatastruct.h>
+#include <dns/rdatatype.h>
+#include <dns/result.h>
+#include <dns/secalg.h>
+
+#include <dst/dst.h>
+
+static char *algname;
+
+static isc_result_t
+printdata(dns_rdataset_t *rdataset, dns_name_t *owner) {
+	isc_buffer_t target;
+	isc_result_t result;
+	isc_region_t r;
+	char t[4096];
+
+	if (!dns_rdataset_isassociated(rdataset)) {
+		printf("[WARN: empty]\n");
+		return (ISC_R_SUCCESS);
+	}
+
+	isc_buffer_init(&target, t, sizeof(t));
+
+	result = dns_rdataset_totext(rdataset, owner, false, false,
+				     &target);
+	if (result != ISC_R_SUCCESS)
+		return (result);
+	isc_buffer_usedregion(&target, &r);
+	printf("%.*s", (int)r.length, (char *)r.base);
+
+	return (ISC_R_SUCCESS);
+}
+
+ISC_PLATFORM_NORETURN_PRE static void
+usage(void) ISC_PLATFORM_NORETURN_POST;
+
+static void
+usage(void) {
+	fprintf(stderr, "resolve [-t RRtype] "
+		"[[-a algorithm] [-e] -k keyname -K keystring] "
+		"[-S domain:serveraddr_for_domain ] [-s server_address]"
+		"[-b address[#port]] hostname\n");
+
+	exit(1);
+}
+
+static void
+set_key(dns_client_t *client, char *keynamestr, char *keystr,
+	bool is_sep, isc_mem_t **mctxp)
+{
+	isc_result_t result;
+	dns_fixedname_t fkeyname;
+	unsigned int namelen;
+	dns_name_t *keyname;
+	dns_rdata_dnskey_t keystruct;
+	unsigned char keydata[4096];
+	isc_buffer_t keydatabuf;
+	unsigned char rrdata[4096];
+	isc_buffer_t rrdatabuf;
+	isc_buffer_t b;
+	isc_textregion_t tr;
+	isc_region_t r;
+	dns_secalg_t alg;
+
+	result = isc_mem_create(0, 0, mctxp);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to create mctx\n");
+		exit(1);
+	}
+
+	if (algname != NULL) {
+		tr.base = algname;
+		tr.length = strlen(algname);
+		result = dns_secalg_fromtext(&alg, &tr);
+		if (result != ISC_R_SUCCESS) {
+			fprintf(stderr, "failed to identify the algorithm\n");
+			exit(1);
+		}
+	} else
+		alg = DNS_KEYALG_RSASHA1;
+
+	keystruct.common.rdclass = dns_rdataclass_in;
+	keystruct.common.rdtype = dns_rdatatype_dnskey;
+	keystruct.flags = DNS_KEYOWNER_ZONE; /* fixed */
+	if (is_sep)
+		keystruct.flags |= DNS_KEYFLAG_KSK;
+	keystruct.protocol = DNS_KEYPROTO_DNSSEC; /* fixed */
+	keystruct.algorithm = alg;
+
+	isc_buffer_init(&keydatabuf, keydata, sizeof(keydata));
+	isc_buffer_init(&rrdatabuf, rrdata, sizeof(rrdata));
+	result = isc_base64_decodestring(keystr, &keydatabuf);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "base64 decode failed\n");
+		exit(1);
+	}
+	isc_buffer_usedregion(&keydatabuf, &r);
+	keystruct.datalen = r.length;
+	keystruct.data = r.base;
+
+	result = dns_rdata_fromstruct(NULL, keystruct.common.rdclass,
+				      keystruct.common.rdtype,
+				      &keystruct, &rrdatabuf);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to construct key rdata\n");
+		exit(1);
+	}
+	namelen = strlen(keynamestr);
+	isc_buffer_init(&b, keynamestr, namelen);
+	isc_buffer_add(&b, namelen);
+	keyname = dns_fixedname_initname(&fkeyname);
+	result = dns_name_fromtext(keyname, &b, dns_rootname, 0, NULL);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to construct key name\n");
+		exit(1);
+	}
+	result = dns_client_addtrustedkey(client, dns_rdataclass_in,
+					  keyname, &rrdatabuf);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to add key for %s\n",
+			keynamestr);
+		exit(1);
+	}
+}
+
+static void
+addserver(dns_client_t *client, const char *addrstr, const char *port,
+	  const char *name_space)
+{
+	struct addrinfo hints, *res;
+	int gaierror;
+	isc_sockaddr_t sa;
+	isc_sockaddrlist_t servers;
+	isc_result_t result;
+	unsigned int namelen;
+	isc_buffer_t b;
+	dns_fixedname_t fname;
+	dns_name_t *name = NULL;
+
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = AF_UNSPEC;
+	hints.ai_socktype = SOCK_DGRAM;
+	hints.ai_protocol = IPPROTO_UDP;
+	hints.ai_flags = AI_NUMERICHOST;
+	gaierror = getaddrinfo(addrstr, port, &hints, &res);
+	if (gaierror != 0) {
+		fprintf(stderr, "getaddrinfo failed: %s\n",
+			gai_strerror(gaierror));
+		exit(1);
+	}
+	INSIST(res->ai_addrlen <= sizeof(sa.type));
+	memmove(&sa.type, res->ai_addr, res->ai_addrlen);
+	sa.length = (unsigned int)res->ai_addrlen;
+	freeaddrinfo(res);
+	ISC_LINK_INIT(&sa, link);
+	ISC_LIST_INIT(servers);
+	ISC_LIST_APPEND(servers, &sa, link);
+
+	if (name_space != NULL) {
+		namelen = strlen(name_space);
+		isc_buffer_constinit(&b, name_space, namelen);
+		isc_buffer_add(&b, namelen);
+		name = dns_fixedname_initname(&fname);
+		result = dns_name_fromtext(name, &b, dns_rootname, 0, NULL);
+		if (result != ISC_R_SUCCESS) {
+			fprintf(stderr, "failed to convert qname: %u\n",
+				result);
+			exit(1);
+		}
+	}
+
+	result = dns_client_setservers(client, dns_rdataclass_in, name,
+				       &servers);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "set server failed: %u\n", result);
+		exit(1);
+	}
+}
+
+int
+main(int argc, char *argv[]) {
+	int ch;
+	isc_textregion_t tr;
+	char *server = NULL;
+	char *altserver = NULL;
+	char *altserveraddr = NULL;
+	char *altservername = NULL;
+	dns_client_t *client = NULL;
+	char *keynamestr = NULL;
+	char *keystr = NULL;
+	isc_result_t result;
+	isc_buffer_t b;
+	dns_fixedname_t qname0;
+	unsigned int namelen;
+	dns_name_t *qname, *name;
+	dns_rdatatype_t type = dns_rdatatype_a;
+	dns_rdataset_t *rdataset;
+	dns_namelist_t namelist;
+	isc_mem_t *keymctx = NULL;
+	unsigned int clientopt, resopt;
+	bool is_sep = false;
+	const char *port = "53";
+	isc_mem_t *mctx = NULL;
+	isc_appctx_t *actx = NULL;
+	isc_taskmgr_t *taskmgr = NULL;
+	isc_socketmgr_t *socketmgr = NULL;
+	isc_timermgr_t *timermgr = NULL;
+	struct in_addr in4;
+	struct in6_addr in6;
+	isc_sockaddr_t a4, a6;
+	isc_sockaddr_t *addr4 = NULL, *addr6 = NULL;
+
+	while ((ch = isc_commandline_parse(argc, argv,
+					   "a:b:es:t:k:K:p:S:")) != -1) {
+		switch (ch) {
+		case 't':
+			tr.base = isc_commandline_argument;
+			tr.length = strlen(isc_commandline_argument);
+			result = dns_rdatatype_fromtext(&type, &tr);
+			if (result != ISC_R_SUCCESS) {
+				fprintf(stderr,
+					"invalid RRtype: %s\n",
+					isc_commandline_argument);
+				exit(1);
+			}
+			break;
+		case 'a':
+			algname = isc_commandline_argument;
+			break;
+		case 'b':
+			if (inet_pton(AF_INET,
+				      isc_commandline_argument, &in4) == 1) {
+				if (addr4 != NULL) {
+					fprintf(stderr, "only one local "
+							"address per family "
+							"can be specified\n");
+					exit(1);
+				}
+				isc_sockaddr_fromin(&a4, &in4, 0);
+				addr4 = &a4;
+			} else if (inet_pton(AF_INET6,
+					     isc_commandline_argument,
+					     &in6) == 1) {
+				if (addr6 != NULL) {
+					fprintf(stderr, "only one local "
+							"address per family "
+							"can be specified\n");
+					exit(1);
+				}
+				isc_sockaddr_fromin6(&a6, &in6, 0);
+				addr6 = &a6;
+			} else {
+				fprintf(stderr, "invalid address %s\n",
+					isc_commandline_argument);
+				exit(1);
+			}
+			break;
+		case 'e':
+			is_sep = true;
+			break;
+		case 'S':
+			if (altserver != NULL) {
+				fprintf(stderr, "alternate server "
+					"already defined: %s\n",
+					altserver);
+				exit(1);
+			}
+			altserver = isc_commandline_argument;
+			break;
+		case 's':
+			if (server != NULL) {
+				fprintf(stderr, "server "
+					"already defined: %s\n",
+					server);
+				exit(1);
+			}
+			server = isc_commandline_argument;
+			break;
+		case 'k':
+			keynamestr = isc_commandline_argument;
+			break;
+		case 'K':
+			keystr = isc_commandline_argument;
+			break;
+		case 'p':
+			port = isc_commandline_argument;
+			break;
+		default:
+			usage();
+		}
+	}
+
+	argc -= isc_commandline_index;
+	argv += isc_commandline_index;
+	if (argc < 1)
+		usage();
+
+	if (altserver != NULL) {
+		char *cp;
+
+		cp = strchr(altserver, ':');
+		if (cp == NULL) {
+			fprintf(stderr, "invalid alternate server: %s\n",
+				altserver);
+			exit(1);
+		}
+		*cp = '\0';
+		altservername = altserver;
+		altserveraddr = cp + 1;
+	}
+
+	isc_lib_register();
+	result = dns_lib_init();
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "dns_lib_init failed: %u\n", result);
+		exit(1);
+	}
+
+	result = isc_mem_create(0, 0, &mctx);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to crate mctx\n");
+		exit(1);
+	}
+
+	result = isc_appctx_create(mctx, &actx);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup;
+	result = isc_app_ctxstart(actx);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup;
+	result = isc_taskmgr_createinctx(mctx, actx, 1, 0, &taskmgr);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup;
+	result = isc_socketmgr_createinctx(mctx, actx, &socketmgr);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup;
+	result = isc_timermgr_createinctx(mctx, actx, &timermgr);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup;
+
+	clientopt = 0;
+	result = dns_client_createx2(mctx, actx, taskmgr, socketmgr, timermgr,
+				    clientopt, &client, addr4, addr6);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "dns_client_create failed: %u, %s\n", result,
+			isc_result_totext(result));
+		exit(1);
+	}
+
+	/* Set the nameserver */
+	if (server == NULL) {
+		irs_resconf_t *resconf = NULL;
+		isc_sockaddrlist_t *nameservers;
+
+		result = irs_resconf_load(mctx, "/etc/resolv.conf", &resconf);
+		if (result != ISC_R_SUCCESS && result != ISC_R_FILENOTFOUND) {
+			fprintf(stderr, "irs_resconf_load failed: %u\n",
+				result);
+			exit(1);
+		}
+		nameservers = irs_resconf_getnameservers(resconf);
+		result = dns_client_setservers(client, dns_rdataclass_in,
+					       NULL, nameservers);
+		if (result != ISC_R_SUCCESS) {
+			irs_resconf_destroy(&resconf);
+			fprintf(stderr, "dns_client_setservers failed: %u\n",
+				result);
+			exit(1);
+		}
+		irs_resconf_destroy(&resconf);
+	} else {
+		addserver(client, server, port, NULL);
+	}
+
+	/* Set the alternate nameserver (when specified) */
+	if (altserver != NULL)
+		addserver(client, altserveraddr, port, altservername);
+
+	/* Install DNSSEC key (if given) */
+	if (keynamestr != NULL) {
+		if (keystr == NULL) {
+			fprintf(stderr,
+				"key string is missing "
+				"while key name is provided\n");
+			exit(1);
+		}
+		set_key(client, keynamestr, keystr, is_sep, &keymctx);
+	}
+
+	/* Construct qname */
+	namelen = strlen(argv[0]);
+	isc_buffer_init(&b, argv[0], namelen);
+	isc_buffer_add(&b, namelen);
+	qname = dns_fixedname_initname(&qname0);
+	result = dns_name_fromtext(qname, &b, dns_rootname, 0, NULL);
+	if (result != ISC_R_SUCCESS)
+		fprintf(stderr, "failed to convert qname: %u\n", result);
+
+	/* Perform resolution */
+	resopt = DNS_CLIENTRESOPT_ALLOWRUN;
+	if (keynamestr == NULL)
+		resopt |= DNS_CLIENTRESOPT_NODNSSEC;
+	ISC_LIST_INIT(namelist);
+	result = dns_client_resolve(client, qname, dns_rdataclass_in, type,
+				    resopt, &namelist);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr,
+			"resolution failed: %s\n", dns_result_totext(result));
+	}
+	for (name = ISC_LIST_HEAD(namelist); name != NULL;
+	     name = ISC_LIST_NEXT(name, link)) {
+		for (rdataset = ISC_LIST_HEAD(name->list);
+		     rdataset != NULL;
+		     rdataset = ISC_LIST_NEXT(rdataset, link)) {
+			if (printdata(rdataset, name) != ISC_R_SUCCESS)
+				fprintf(stderr, "print data failed\n");
+		}
+	}
+
+	dns_client_freeresanswer(client, &namelist);
+
+	/* Cleanup */
+cleanup:
+	dns_client_destroy(&client);
+
+	if (taskmgr != NULL)
+		isc_taskmgr_destroy(&taskmgr);
+	if (timermgr != NULL)
+		isc_timermgr_destroy(&timermgr);
+	if (socketmgr != NULL)
+		isc_socketmgr_destroy(&socketmgr);
+	if (actx != NULL)
+		isc_appctx_destroy(&actx);
+	isc_mem_detach(&mctx);
+
+	if (keynamestr != NULL)
+		isc_mem_destroy(&keymctx);
+	dns_lib_shutdown();
+
+	return (0);
+}
diff --git a/lib/samples/rootkey.sh b/lib/samples/rootkey.sh
new file mode 100644
index 0000000..3dbfafd
--- /dev/null
+++ b/lib/samples/rootkey.sh
@@ -0,0 +1,26 @@
+#!/bin/sh
+#
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+# Fetch a copy of a current root signing key; used for testing
+# DNSSEC validation in 'sample'.
+#
+# After running this script, "sample `cat sample.key` <args>" will
+# perform a lookup as specified in <args> and validate the result
+# using the root key.
+#
+# (This is NOT a secure method of obtaining the root key; it is
+# included here for testing purposes only.)
+dig +noall +answer dnskey . | perl -n -e '
+local ($dn, $ttl, $class, $type, $flags, $proto, $alg, @rest) = split;
+next if ($flags != 257);
+local $key = join("", @rest);
+print "-a $alg -e -k $dn -K $key\n"
+' > sample.key
diff --git a/lib/samples/sample-async.c b/lib/samples/sample-async.c
new file mode 100644
index 0000000..28c6573
--- /dev/null
+++ b/lib/samples/sample-async.c
@@ -0,0 +1,403 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+
+#include <config.h>
+
+#ifndef WIN32
+#include <stdbool.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+
+#include <arpa/inet.h>
+
+#include <unistd.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <isc/app.h>
+#include <isc/buffer.h>
+#include <isc/commandline.h>
+#include <isc/lib.h>
+#include <isc/mem.h>
+#include <isc/print.h>
+#include <isc/socket.h>
+#include <isc/sockaddr.h>
+#include <isc/task.h>
+#include <isc/timer.h>
+#include <isc/util.h>
+
+#include <dns/client.h>
+#include <dns/fixedname.h>
+#include <dns/lib.h>
+#include <dns/name.h>
+#include <dns/rdataset.h>
+#include <dns/rdatatype.h>
+#include <dns/result.h>
+
+#define MAX_SERVERS 10
+#define MAX_QUERIES 100
+
+static dns_client_t *client = NULL;
+static isc_task_t *query_task = NULL;
+static isc_appctx_t *query_actx = NULL;
+static unsigned int outstanding_queries = 0;
+static const char *def_server = "127.0.0.1";
+static FILE *fp;
+
+struct query_trans {
+	int id;
+	bool inuse;
+	dns_rdatatype_t type;
+	dns_fixedname_t fixedname;
+	dns_name_t *qname;
+	dns_namelist_t answerlist;
+	dns_clientrestrans_t *xid;
+};
+
+static struct query_trans query_array[MAX_QUERIES];
+
+static isc_result_t dispatch_query(struct query_trans *trans);
+
+static void
+ctxs_destroy(isc_mem_t **mctxp, isc_appctx_t **actxp,
+	     isc_taskmgr_t **taskmgrp, isc_socketmgr_t **socketmgrp,
+	     isc_timermgr_t **timermgrp)
+{
+	if (*taskmgrp != NULL)
+		isc_taskmgr_destroy(taskmgrp);
+
+	if (*timermgrp != NULL)
+		isc_timermgr_destroy(timermgrp);
+
+	if (*socketmgrp != NULL)
+		isc_socketmgr_destroy(socketmgrp);
+
+	if (*actxp != NULL)
+		isc_appctx_destroy(actxp);
+
+	if (*mctxp != NULL)
+		isc_mem_destroy(mctxp);
+}
+
+static isc_result_t
+ctxs_init(isc_mem_t **mctxp, isc_appctx_t **actxp,
+	  isc_taskmgr_t **taskmgrp, isc_socketmgr_t **socketmgrp,
+	  isc_timermgr_t **timermgrp)
+{
+	isc_result_t result;
+
+	result = isc_mem_create(0, 0, mctxp);
+	if (result != ISC_R_SUCCESS)
+		goto fail;
+
+	result = isc_appctx_create(*mctxp, actxp);
+	if (result != ISC_R_SUCCESS)
+		goto fail;
+
+	result = isc_taskmgr_createinctx(*mctxp, *actxp, 1, 0, taskmgrp);
+	if (result != ISC_R_SUCCESS)
+		goto fail;
+
+	result = isc_socketmgr_createinctx(*mctxp, *actxp, socketmgrp);
+	if (result != ISC_R_SUCCESS)
+		goto fail;
+
+	result = isc_timermgr_createinctx(*mctxp, *actxp, timermgrp);
+	if (result != ISC_R_SUCCESS)
+		goto fail;
+
+	return (ISC_R_SUCCESS);
+
+ fail:
+	ctxs_destroy(mctxp, actxp, taskmgrp, socketmgrp, timermgrp);
+
+	return (result);
+}
+
+static isc_result_t
+printdata(dns_rdataset_t *rdataset, dns_name_t *owner) {
+	isc_buffer_t target;
+	isc_result_t result;
+	isc_region_t r;
+	char t[4096];
+
+	isc_buffer_init(&target, t, sizeof(t));
+
+	if (!dns_rdataset_isassociated(rdataset))
+		return (ISC_R_SUCCESS);
+	result = dns_rdataset_totext(rdataset, owner, false, false,
+				     &target);
+	if (result != ISC_R_SUCCESS)
+		return (result);
+	isc_buffer_usedregion(&target, &r);
+	printf("  %.*s", (int)r.length, (char *)r.base);
+
+	return (ISC_R_SUCCESS);
+}
+
+static void
+process_answer(isc_task_t *task, isc_event_t *event) {
+	struct query_trans *trans = event->ev_arg;
+	dns_clientresevent_t *rev = (dns_clientresevent_t *)event;
+	dns_name_t *name;
+	dns_rdataset_t *rdataset;
+	isc_result_t result;
+
+	REQUIRE(task == query_task);
+	REQUIRE(trans->inuse == true);
+	REQUIRE(outstanding_queries > 0);
+
+	printf("answer[%2d]\n", trans->id);
+
+	if (rev->result != ISC_R_SUCCESS)
+		printf("  failed: %u(%s)\n", rev->result,
+		       dns_result_totext(rev->result));
+
+	for (name = ISC_LIST_HEAD(rev->answerlist); name != NULL;
+	     name = ISC_LIST_NEXT(name, link)) {
+		for (rdataset = ISC_LIST_HEAD(name->list);
+		     rdataset != NULL;
+		     rdataset = ISC_LIST_NEXT(rdataset, link)) {
+			(void)printdata(rdataset, name);
+		}
+	}
+
+	dns_client_freeresanswer(client, &rev->answerlist);
+	dns_client_destroyrestrans(&trans->xid);
+
+	isc_event_free(&event);
+
+	trans->inuse = false;
+	dns_fixedname_invalidate(&trans->fixedname);
+	trans->qname = NULL;
+	outstanding_queries--;
+
+	result = dispatch_query(trans);
+#if 0				/* for cancel test */
+	if (result == ISC_R_SUCCESS) {
+		static int count = 0;
+
+		if ((++count) % 10 == 0)
+			dns_client_cancelresolve(trans->xid);
+	}
+#endif
+	if (result == ISC_R_NOMORE && outstanding_queries == 0)
+		isc_app_ctxshutdown(query_actx);
+}
+
+static isc_result_t
+dispatch_query(struct query_trans *trans) {
+	isc_result_t result;
+	unsigned int namelen;
+	isc_buffer_t b;
+	char buf[4096];	/* XXX ad hoc constant, but should be enough */
+	char *cp;
+
+	REQUIRE(trans != NULL);
+	REQUIRE(trans->inuse == false);
+	REQUIRE(ISC_LIST_EMPTY(trans->answerlist));
+	REQUIRE(outstanding_queries < MAX_QUERIES);
+
+	/* Construct qname */
+	cp = fgets(buf, sizeof(buf), fp);
+	if (cp == NULL)
+		return (ISC_R_NOMORE);
+	/* zap NL if any */
+	if ((cp = strchr(buf, '\n')) != NULL)
+		*cp = '\0';
+	namelen = strlen(buf);
+	isc_buffer_init(&b, buf, namelen);
+	isc_buffer_add(&b, namelen);
+	trans->qname = dns_fixedname_initname(&trans->fixedname);
+	result = dns_name_fromtext(trans->qname, &b, dns_rootname, 0, NULL);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup;
+
+	/* Start resolution */
+	result = dns_client_startresolve(client, trans->qname,
+					 dns_rdataclass_in, trans->type, 0,
+					 query_task, process_answer, trans,
+					 &trans->xid);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup;
+
+	trans->inuse = true;
+	outstanding_queries++;
+
+	return (ISC_R_SUCCESS);
+
+ cleanup:
+	dns_fixedname_invalidate(&trans->fixedname);
+
+	return (result);
+}
+
+ISC_PLATFORM_NORETURN_PRE static void
+usage(void) ISC_PLATFORM_NORETURN_POST;
+
+static void
+usage(void) {
+	fprintf(stderr, "usage: sample-async [-s server_address] [-t RR type] "
+		"input_file\n");
+
+	exit(1);
+}
+
+int
+main(int argc, char *argv[]) {
+	int ch;
+	isc_textregion_t tr;
+	isc_mem_t *mctx = NULL;
+	isc_taskmgr_t *taskmgr = NULL;
+	isc_socketmgr_t *socketmgr = NULL;
+	isc_timermgr_t *timermgr = NULL;
+	int nservers = 0;
+	const char *serveraddr[MAX_SERVERS];
+	isc_sockaddr_t sa[MAX_SERVERS];
+	isc_sockaddrlist_t servers;
+	dns_rdatatype_t type = dns_rdatatype_a;
+	struct in_addr inaddr;
+	isc_result_t result;
+	int i;
+
+	while ((ch = isc_commandline_parse(argc, argv, "s:t:")) != -1) {
+		switch (ch) {
+		case 't':
+			tr.base = isc_commandline_argument;
+			tr.length = strlen(isc_commandline_argument);
+			result = dns_rdatatype_fromtext(&type, &tr);
+			if (result != ISC_R_SUCCESS) {
+				fprintf(stderr,
+					"invalid RRtype: %s\n",
+					isc_commandline_argument);
+				exit(1);
+			}
+			break;
+		case 's':
+			if (nservers == MAX_SERVERS) {
+				fprintf(stderr,
+					"too many servers (up to %d)\n",
+					MAX_SERVERS);
+				exit(1);
+			}
+			serveraddr[nservers++] =
+				(const char *)isc_commandline_argument;
+			break;
+		default:
+			usage();
+		}
+	}
+
+	argc -= isc_commandline_index;
+	argv += isc_commandline_index;
+	if (argc < 1)
+		usage();
+
+	if (nservers == 0) {
+		nservers = 1;
+		serveraddr[0] = def_server;
+	}
+
+	for (i = 0; i < MAX_QUERIES; i++) {
+		query_array[i].id = i;
+		query_array[i].inuse = false;
+		query_array[i].type = type;
+		dns_fixedname_init(&query_array[i].fixedname);
+		query_array[i].qname = NULL;
+		ISC_LIST_INIT(query_array[i].answerlist);
+		query_array[i].xid = NULL;
+	}
+
+	isc_lib_register();
+	result = dns_lib_init();
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "dns_lib_init failed: %u\n", result);
+		exit(1);
+	}
+
+	result = ctxs_init(&mctx, &query_actx, &taskmgr, &socketmgr,
+			   &timermgr);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "ctx create failed: %u\n", result);
+		exit(1);
+	}
+
+	isc_app_ctxstart(query_actx);
+
+	result = dns_client_createx(mctx, query_actx, taskmgr, socketmgr,
+				    timermgr, 0, &client);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "dns_client_createx failed: %u\n", result);
+		exit(1);
+	}
+
+	/* Set nameservers */
+	ISC_LIST_INIT(servers);
+	for (i = 0; i < nservers; i++) {
+		if (inet_pton(AF_INET, serveraddr[i], &inaddr) != 1) {
+			fprintf(stderr, "failed to parse IPv4 address %s\n",
+				serveraddr[i]);
+			exit(1);
+		}
+		isc_sockaddr_fromin(&sa[i], &inaddr, 53);
+		ISC_LIST_APPEND(servers, &sa[i], link);
+	}
+	result = dns_client_setservers(client, dns_rdataclass_in, NULL,
+				       &servers);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "set server failed: %u\n", result);
+		exit(1);
+	}
+
+	/* Create the main task */
+	query_task = NULL;
+	result = isc_task_create(taskmgr, 0, &query_task);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to create task: %u\n", result);
+		exit(1);
+	}
+
+	/* Open input file */
+	fp = fopen(argv[0], "r");
+	if (fp == NULL) {
+		fprintf(stderr, "failed to open input file: %s\n", argv[1]);
+		exit(1);
+	}
+
+	/* Dispatch initial queries */
+	for (i = 0; i < MAX_QUERIES; i++) {
+		result = dispatch_query(&query_array[i]);
+		if (result == ISC_R_NOMORE)
+			break;
+	}
+
+	/* Start event loop */
+	isc_app_ctxrun(query_actx);
+
+	/* Sanity check */
+	for (i = 0; i < MAX_QUERIES; i++)
+		INSIST(query_array[i].inuse == false);
+
+	/* Cleanup */
+	isc_task_detach(&query_task);
+	dns_client_destroy(&client);
+	dns_lib_shutdown();
+	isc_app_ctxfinish(query_actx);
+	ctxs_destroy(&mctx, &query_actx, &taskmgr, &socketmgr, &timermgr);
+
+	return (0);
+}
diff --git a/lib/samples/sample-gai.c b/lib/samples/sample-gai.c
new file mode 100644
index 0000000..8b56ab9
--- /dev/null
+++ b/lib/samples/sample-gai.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+
+#include <config.h>
+
+#include <isc/net.h>
+#include <isc/print.h>
+
+#include <irs/netdb.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+static void
+do_gai(int family, char *hostname) {
+	struct addrinfo hints, *res, *res0;
+	int error;
+	char namebuf[1024], addrbuf[1024], servbuf[1024];
+
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = family;
+	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_flags = AI_CANONNAME;
+	error = getaddrinfo(hostname, "http", &hints, &res0);
+	if (error) {
+		fprintf(stderr, "getaddrinfo failed for %s,family=%d: %s\n",
+			hostname, family, gai_strerror(error));
+		return;
+	}
+
+	for (res = res0; res; res = res->ai_next) {
+		error = getnameinfo(res->ai_addr,
+				    (socklen_t)res->ai_addrlen,
+				    addrbuf, sizeof(addrbuf),
+				    NULL, 0, NI_NUMERICHOST);
+		if (error == 0)
+			error = getnameinfo(res->ai_addr,
+					    (socklen_t)res->ai_addrlen,
+					    namebuf, sizeof(namebuf),
+					    servbuf, sizeof(servbuf), 0);
+		if (error != 0) {
+			fprintf(stderr, "getnameinfo failed: %s\n",
+				gai_strerror(error));
+		} else {
+			printf("%s(%s/%s)=%s:%s\n", hostname,
+			       res->ai_canonname, addrbuf, namebuf, servbuf);
+		}
+	}
+
+	freeaddrinfo(res0);
+}
+
+int
+main(int argc, char *argv[]) {
+	if (argc < 2)
+		exit(1);
+
+	do_gai(AF_INET, argv[1]);
+	do_gai(AF_INET6, argv[1]);
+	do_gai(AF_UNSPEC, argv[1]);
+
+	return (0);
+}
diff --git a/lib/samples/sample-request.c b/lib/samples/sample-request.c
new file mode 100644
index 0000000..e60a6df
--- /dev/null
+++ b/lib/samples/sample-request.c
@@ -0,0 +1,265 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+
+#include <config.h>
+
+#ifndef WIN32
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+
+#include <arpa/inet.h>
+
+#include <netdb.h>
+#include <unistd.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <isc/base64.h>
+#include <isc/buffer.h>
+#include <isc/commandline.h>
+#include <isc/lib.h>
+#include <isc/mem.h>
+#include <isc/print.h>
+#include <isc/sockaddr.h>
+#include <isc/util.h>
+
+#include <dns/client.h>
+#include <dns/fixedname.h>
+#include <dns/keyvalues.h>
+#include <dns/lib.h>
+#include <dns/masterdump.h>
+#include <dns/message.h>
+#include <dns/name.h>
+#include <dns/rdata.h>
+#include <dns/rdataset.h>
+#include <dns/rdatastruct.h>
+#include <dns/rdatatype.h>
+#include <dns/result.h>
+#include <dns/secalg.h>
+
+#include <dst/dst.h>
+
+static isc_mem_t *mctx;
+static dns_fixedname_t fixedqname;
+
+ISC_PLATFORM_NORETURN_PRE static void
+usage(void) ISC_PLATFORM_NORETURN_POST;
+
+static void
+usage(void) {
+	fprintf(stderr, "sample-request [-t RRtype] server_address hostname\n");
+
+	exit(1);
+}
+
+static isc_result_t
+make_querymessage(dns_message_t *message, const char *namestr,
+		  dns_rdatatype_t rdtype)
+{
+	dns_name_t *qname = NULL, *qname0;
+	dns_rdataset_t *qrdataset = NULL;
+	isc_result_t result;
+	isc_buffer_t b;
+	unsigned int namelen;
+
+	REQUIRE(message != NULL);
+	REQUIRE(namestr != NULL);
+
+	/* Construct qname */
+	namelen = strlen(namestr);
+	isc_buffer_constinit(&b, namestr, namelen);
+	isc_buffer_add(&b, namelen);
+	qname0 = dns_fixedname_initname(&fixedqname);
+	result = dns_name_fromtext(qname0, &b, dns_rootname, 0, NULL);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to convert qname: %u\n", result);
+		return (result);
+	}
+
+	/* Construct query message */
+	message->opcode = dns_opcode_query;
+	message->rdclass = dns_rdataclass_in;
+
+	result = dns_message_gettempname(message, &qname);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup;
+
+	result = dns_message_gettemprdataset(message, &qrdataset);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup;
+
+	dns_name_init(qname, NULL);
+	dns_name_clone(qname0, qname);
+	dns_rdataset_makequestion(qrdataset, message->rdclass, rdtype);
+	ISC_LIST_APPEND(qname->list, qrdataset, link);
+	dns_message_addname(message, qname, DNS_SECTION_QUESTION);
+
+	return (ISC_R_SUCCESS);
+
+ cleanup:
+	if (qname != NULL)
+		dns_message_puttempname(message, &qname);
+	if (qrdataset != NULL)
+		dns_message_puttemprdataset(message, &qrdataset);
+	dns_message_destroy(&message);
+	return (result);
+}
+
+static void
+print_section(dns_message_t *message, int section, isc_buffer_t *buf) {
+	isc_result_t result;
+	isc_region_t r;
+
+	result = dns_message_sectiontotext(message, section,
+					   &dns_master_style_full, 0, buf);
+	if (result != ISC_R_SUCCESS)
+		goto fail;
+
+	isc_buffer_usedregion(buf, &r);
+	printf("%.*s", (int)r.length, (char *)r.base);
+
+	return;
+
+ fail:
+	fprintf(stderr, "failed to convert a section\n");
+}
+
+int
+main(int argc, char *argv[]) {
+	int ch, i, gaierror;
+	struct addrinfo hints, *res;
+	isc_textregion_t tr;
+	dns_client_t *client = NULL;
+	isc_result_t result;
+	isc_sockaddr_t sa;
+	dns_message_t *qmessage, *rmessage;
+	dns_rdatatype_t type = dns_rdatatype_a;
+	isc_buffer_t *outputbuf;
+
+	while ((ch = isc_commandline_parse(argc, argv, "t:")) != -1) {
+		switch (ch) {
+		case 't':
+			tr.base = isc_commandline_argument;
+			tr.length = strlen(isc_commandline_argument);
+			result = dns_rdatatype_fromtext(&type, &tr);
+			if (result != ISC_R_SUCCESS) {
+				fprintf(stderr,
+					"invalid RRtype: %s\n",
+					isc_commandline_argument);
+				exit(1);
+			}
+			break;
+		default:
+			usage();
+		}
+	}
+
+	argc -= isc_commandline_index;
+	argv += isc_commandline_index;
+	if (argc < 2)
+		usage();
+
+	isc_lib_register();
+	result = dns_lib_init();
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "dns_lib_init failed: %u\n", result);
+		exit(1);
+	}
+
+	result = dns_client_create(&client, 0);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "dns_client_create failed: %u\n", result);
+		exit(1);
+	}
+
+	/* Prepare message structures */
+	mctx = NULL;
+	qmessage = NULL;
+	rmessage = NULL;
+
+	result = isc_mem_create(0, 0, &mctx);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to create a memory context\n");
+		exit(1);
+	}
+	result = dns_message_create(mctx, DNS_MESSAGE_INTENTRENDER, &qmessage);
+	if (result == ISC_R_SUCCESS) {
+		result = dns_message_create(mctx, DNS_MESSAGE_INTENTPARSE,
+					    &rmessage);
+	}
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to create messages\n");
+		exit(1);
+	}
+
+	/* Initialize the nameserver address */
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = AF_UNSPEC;
+	hints.ai_socktype = SOCK_DGRAM;
+	hints.ai_protocol = IPPROTO_UDP;
+#ifdef AI_NUMERICHOST
+	hints.ai_flags = AI_NUMERICHOST;
+#endif
+	gaierror = getaddrinfo(argv[0], "53", &hints, &res);
+	if (gaierror != 0) {
+		fprintf(stderr, "getaddrinfo failed: %s\n",
+			gai_strerror(gaierror));
+		exit(1);
+	}
+	INSIST(res->ai_addrlen <= sizeof(sa.type));
+	memmove(&sa.type, res->ai_addr, res->ai_addrlen);
+	freeaddrinfo(res);
+	sa.length = (unsigned int)res->ai_addrlen;
+	ISC_LINK_INIT(&sa, link);
+
+	/* Construct qname */
+	result = make_querymessage(qmessage, argv[1], type);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to create a query\n");
+		exit(1);
+	}
+
+	/* Send request and wait for a response */
+	result = dns_client_request(client, qmessage, rmessage, &sa, 0, 0,
+				    NULL, 60, 0, 3);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to get a response: %s\n",
+			dns_result_totext(result));
+	}
+
+	/* Dump the response */
+	outputbuf = NULL;
+	result = isc_buffer_allocate(mctx, &outputbuf, 65535);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to allocate a result buffer\n");
+		exit(1);
+	}
+	for (i = 0; i < DNS_SECTION_MAX; i++) {
+		print_section(rmessage, i, outputbuf);
+		isc_buffer_clear(outputbuf);
+	}
+	isc_buffer_free(&outputbuf);
+
+	/* Cleanup */
+	dns_message_destroy(&qmessage);
+	dns_message_destroy(&rmessage);
+	isc_mem_destroy(&mctx);
+	dns_client_destroy(&client);
+	dns_lib_shutdown();
+
+	return (0);
+}
diff --git a/lib/samples/sample-update.c b/lib/samples/sample-update.c
new file mode 100644
index 0000000..83f963d
--- /dev/null
+++ b/lib/samples/sample-update.c
@@ -0,0 +1,796 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+
+#include <config.h>
+
+#ifndef WIN32
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+
+#include <arpa/inet.h>
+
+#include <netdb.h>
+#include <unistd.h>
+#endif
+
+#include <ctype.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <isc/buffer.h>
+#include <isc/commandline.h>
+#include <isc/lex.h>
+#include <isc/lib.h>
+#include <isc/mem.h>
+#include <isc/parseint.h>
+#include <isc/print.h>
+#include <isc/sockaddr.h>
+#include <isc/string.h>
+#include <isc/util.h>
+
+#include <dns/callbacks.h>
+#include <dns/client.h>
+#include <dns/fixedname.h>
+#include <dns/lib.h>
+#include <dns/name.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rdatalist.h>
+#include <dns/rdataset.h>
+#include <dns/rdatastruct.h>
+#include <dns/rdatatype.h>
+#include <dns/result.h>
+#include <dns/secalg.h>
+#include <dns/tsec.h>
+
+#include <dst/dst.h>
+
+static dns_tsec_t *tsec = NULL;
+static const dns_rdataclass_t default_rdataclass = dns_rdataclass_in;
+static isc_bufferlist_t usedbuffers;
+static ISC_LIST(dns_rdatalist_t) usedrdatalists;
+
+static const char *port = "53";
+
+static void setup_tsec(char *keyfile, isc_mem_t *mctx);
+static void update_addordelete(isc_mem_t *mctx, char *cmdline,
+			       bool isdelete, dns_name_t *name);
+static void evaluate_prereq(isc_mem_t *mctx, char *cmdline, dns_name_t *name);
+
+ISC_PLATFORM_NORETURN_PRE static void
+usage(void) ISC_PLATFORM_NORETURN_POST;
+
+static void
+usage(void) {
+	fprintf(stderr, "sample-update "
+		"-s "
+		"[-a auth_server] "
+		"[-k keyfile] "
+		"[-p prerequisite] "
+		"[-r recursive_server] "
+		"[-z zonename] "
+		"(add|delete) \"name TTL RRtype RDATA\"\n");
+	exit(1);
+}
+
+#ifdef _WIN32
+static void
+InitSockets(void) {
+	WORD wVersionRequested;
+	WSADATA wsaData;
+	int err;
+
+	wVersionRequested = MAKEWORD(2, 0);
+
+	err = WSAStartup(wVersionRequested, &wsaData);
+	if (err != 0) {
+		fprintf(stderr, "WSAStartup() failed: %d\n", err);
+		exit(1);
+	}
+}
+
+static void
+DestroySockets(void) {
+	WSACleanup();
+}
+#else
+#define InitSockets() ((void)0)
+#define DestroySockets() ((void)0)
+#endif
+
+static bool
+addserver(const char *server, isc_sockaddrlist_t *list,
+	   isc_sockaddr_t *sockaddr)
+{
+	struct addrinfo hints, *res;
+	int gaierror;
+
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = AF_UNSPEC;
+	hints.ai_socktype = SOCK_DGRAM;
+	hints.ai_protocol = IPPROTO_UDP;
+#ifdef AI_NUMERICHOST
+	hints.ai_flags |= AI_NUMERICHOST;
+#endif
+#ifdef AI_NUMERICSERV
+	hints.ai_flags |= AI_NUMERICSERV;
+#endif
+	InitSockets();
+	gaierror = getaddrinfo(server, port, &hints, &res);
+	if (gaierror != 0) {
+		fprintf(stderr, "getaddrinfo(%s) failed: %s\n",
+			server, gai_strerror(gaierror));
+		DestroySockets();
+		return (false);
+	}
+	INSIST(res->ai_addrlen <= sizeof(sockaddr->type));
+	memmove(&sockaddr->type, res->ai_addr, res->ai_addrlen);
+	sockaddr->length = (unsigned int)res->ai_addrlen;
+	ISC_LINK_INIT(sockaddr, link);
+	ISC_LIST_APPEND(*list, sockaddr, link);
+	freeaddrinfo(res);
+	DestroySockets();
+	return (true);
+}
+
+int
+main(int argc, char *argv[]) {
+	int ch;
+	dns_client_t *client = NULL;
+	char *zonenamestr = NULL;
+	char *keyfilename = NULL;
+	char *prereqstr = NULL;
+	isc_sockaddr_t sa_auth[10], sa_recursive[10];
+	unsigned int nsa_auth = 0, nsa_recursive = 0;
+	isc_sockaddrlist_t rec_servers;
+	isc_sockaddrlist_t auth_servers, *auth_serversp = &auth_servers;
+	isc_result_t result;
+	bool isdelete;
+	isc_buffer_t b, *buf;
+	dns_fixedname_t zname0, pname0, uname0;
+	unsigned int namelen;
+	dns_name_t *zname = NULL, *uname, *pname;
+	dns_rdataset_t *rdataset;
+	dns_rdatalist_t *rdatalist;
+	dns_rdata_t *rdata;
+	dns_namelist_t updatelist, prereqlist, *prereqlistp = NULL;
+	isc_mem_t *umctx = NULL;
+	bool sendtwice = false;
+
+	ISC_LIST_INIT(auth_servers);
+	ISC_LIST_INIT(rec_servers);
+
+	while ((ch = isc_commandline_parse(argc, argv,
+					   "a:k:p:P:r:sz:")) != EOF)
+	{
+		switch (ch) {
+		case 'k':
+			keyfilename = isc_commandline_argument;
+			break;
+		case 'a':
+			if (nsa_auth < sizeof(sa_auth)/sizeof(*sa_auth) &&
+			    addserver(isc_commandline_argument, &auth_servers,
+				      &sa_auth[nsa_auth]))
+				nsa_auth++;
+			break;
+		case 'p':
+			prereqstr = isc_commandline_argument;
+			break;
+		case 'P':
+			port = isc_commandline_argument;
+			break;
+		case 'r':
+			if (nsa_recursive <
+				sizeof(sa_recursive)/sizeof(*sa_recursive) &&
+			    addserver(isc_commandline_argument, &rec_servers,
+				      &sa_recursive[nsa_recursive]))
+				nsa_recursive++;
+			break;
+		case 's':
+			sendtwice = true;
+			break;
+		case 'z':
+			zonenamestr = isc_commandline_argument;
+			break;
+		default:
+			usage();
+		}
+	}
+
+	argc -= isc_commandline_index;
+	argv += isc_commandline_index;
+	if (argc < 2)
+		usage();
+
+	/* command line argument validation */
+	if (strcmp(argv[0], "delete") == 0)
+		isdelete = true;
+	else if (strcmp(argv[0], "add") == 0)
+		isdelete = false;
+	else {
+		fprintf(stderr, "invalid update command: %s\n", argv[0]);
+		exit(1);
+	}
+
+	if (ISC_LIST_HEAD(auth_servers) == NULL &&
+	    ISC_LIST_HEAD(rec_servers) == NULL) {
+		fprintf(stderr, "authoritative or recursive servers "
+			"must be specified\n");
+		usage();
+	}
+
+	/* Initialization */
+	ISC_LIST_INIT(usedbuffers);
+	ISC_LIST_INIT(usedrdatalists);
+	ISC_LIST_INIT(prereqlist);
+	isc_lib_register();
+	result = dns_lib_init();
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "dns_lib_init failed: %u\n", result);
+		exit(1);
+	}
+	result = isc_mem_create(0, 0, &umctx);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "failed to crate mctx\n");
+		exit(1);
+	}
+
+	result = dns_client_create(&client, 0);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "dns_client_create failed: %u\n", result);
+		exit(1);
+	}
+
+	/* Construct zone name */
+	zname = NULL;
+	if (zonenamestr != NULL) {
+		namelen = strlen(zonenamestr);
+		isc_buffer_init(&b, zonenamestr, namelen);
+		isc_buffer_add(&b, namelen);
+		zname = dns_fixedname_initname(&zname0);
+		result = dns_name_fromtext(zname, &b, dns_rootname, 0, NULL);
+		if (result != ISC_R_SUCCESS)
+			fprintf(stderr, "failed to convert zone name: %u\n",
+				result);
+	}
+
+	/* Construct prerequisite name (if given) */
+	if (prereqstr != NULL) {
+		pname = dns_fixedname_initname(&pname0);
+		evaluate_prereq(umctx, prereqstr, pname);
+		ISC_LIST_APPEND(prereqlist, pname, link);
+		prereqlistp = &prereqlist;
+	}
+
+	/* Construct update name */
+	ISC_LIST_INIT(updatelist);
+	uname = dns_fixedname_initname(&uname0);
+	update_addordelete(umctx, argv[1], isdelete, uname);
+	ISC_LIST_APPEND(updatelist, uname, link);
+
+	/* Set up TSIG/SIG(0) key (if given) */
+	if (keyfilename != NULL)
+		setup_tsec(keyfilename, umctx);
+
+	if (ISC_LIST_HEAD(auth_servers) == NULL)
+		auth_serversp = NULL;
+
+	/* Perform update */
+	result = dns_client_update(client,
+				   default_rdataclass, /* XXX: fixed */
+				   zname, prereqlistp, &updatelist,
+				   auth_serversp, tsec, 0);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr,
+			"update failed: %s\n", dns_result_totext(result));
+	} else
+		fprintf(stderr, "update succeeded\n");
+
+	if (sendtwice) {
+		/* Perform 2nd update */
+		result = dns_client_update(client,
+					   default_rdataclass, /* XXX: fixed */
+					   zname, prereqlistp, &updatelist,
+					   auth_serversp, tsec, 0);
+		if (result != ISC_R_SUCCESS) {
+			fprintf(stderr, "2nd update failed: %s\n",
+				dns_result_totext(result));
+		} else
+			fprintf(stderr, "2nd update succeeded\n");
+	}
+
+	/* Cleanup */
+	while ((pname = ISC_LIST_HEAD(prereqlist)) != NULL) {
+		while ((rdataset = ISC_LIST_HEAD(pname->list)) != NULL) {
+			ISC_LIST_UNLINK(pname->list, rdataset, link);
+			dns_rdataset_disassociate(rdataset);
+			isc_mem_put(umctx, rdataset, sizeof(*rdataset));
+		}
+		ISC_LIST_UNLINK(prereqlist, pname, link);
+	}
+	while ((uname = ISC_LIST_HEAD(updatelist)) != NULL) {
+		while ((rdataset = ISC_LIST_HEAD(uname->list)) != NULL) {
+			ISC_LIST_UNLINK(uname->list, rdataset, link);
+			dns_rdataset_disassociate(rdataset);
+			isc_mem_put(umctx, rdataset, sizeof(*rdataset));
+		}
+		ISC_LIST_UNLINK(updatelist, uname, link);
+	}
+	while ((rdatalist = ISC_LIST_HEAD(usedrdatalists)) != NULL) {
+		while ((rdata = ISC_LIST_HEAD(rdatalist->rdata)) != NULL) {
+			ISC_LIST_UNLINK(rdatalist->rdata, rdata, link);
+			isc_mem_put(umctx, rdata, sizeof(*rdata));
+		}
+		ISC_LIST_UNLINK(usedrdatalists, rdatalist, link);
+		isc_mem_put(umctx, rdatalist, sizeof(*rdatalist));
+	}
+	while ((buf = ISC_LIST_HEAD(usedbuffers)) != NULL) {
+		ISC_LIST_UNLINK(usedbuffers, buf, link);
+		isc_buffer_free(&buf);
+	}
+	if (tsec != NULL)
+		dns_tsec_destroy(&tsec);
+	isc_mem_destroy(&umctx);
+	dns_client_destroy(&client);
+	dns_lib_shutdown();
+
+	return (0);
+}
+
+/*
+ *  Subroutines borrowed from nsupdate.c
+ */
+#define MAXWIRE (64 * 1024)
+#define TTL_MAX 2147483647U	/* Maximum signed 32 bit integer. */
+
+static char *
+nsu_strsep(char **stringp, const char *delim) {
+	char *string = *stringp;
+	char *s;
+	const char *d;
+	char sc, dc;
+
+	if (string == NULL)
+		return (NULL);
+
+	for (; *string != '\0'; string++) {
+		sc = *string;
+		for (d = delim; (dc = *d) != '\0'; d++) {
+			if (sc == dc)
+				break;
+		}
+		if (dc == 0)
+			break;
+	}
+
+	for (s = string; *s != '\0'; s++) {
+		sc = *s;
+		for (d = delim; (dc = *d) != '\0'; d++) {
+			if (sc == dc) {
+				*s++ = '\0';
+				*stringp = s;
+				return (string);
+			}
+		}
+	}
+	*stringp = NULL;
+	return (string);
+}
+
+static void
+fatal(const char *format, ...) {
+	va_list args;
+
+	va_start(args, format);
+	vfprintf(stderr, format, args);
+	va_end(args);
+	fprintf(stderr, "\n");
+	exit(1);
+}
+
+static inline void
+check_result(isc_result_t result, const char *msg) {
+	if (result != ISC_R_SUCCESS)
+		fatal("%s: %s", msg, isc_result_totext(result));
+}
+
+static void
+parse_name(char **cmdlinep, dns_name_t *name) {
+	isc_result_t result;
+	char *word;
+	isc_buffer_t source;
+
+	word = nsu_strsep(cmdlinep, " \t\r\n");
+	if (word == NULL || *word == 0) {
+		fprintf(stderr, "could not read owner name\n");
+		exit(1);
+	}
+
+	isc_buffer_init(&source, word, strlen(word));
+	isc_buffer_add(&source, strlen(word));
+	result = dns_name_fromtext(name, &source, dns_rootname, 0, NULL);
+	check_result(result, "dns_name_fromtext");
+	isc_buffer_invalidate(&source);
+}
+
+static void
+parse_rdata(isc_mem_t *mctx, char **cmdlinep, dns_rdataclass_t rdataclass,
+	    dns_rdatatype_t rdatatype, dns_rdata_t *rdata)
+{
+	char *cmdline = *cmdlinep;
+	isc_buffer_t source, *buf = NULL, *newbuf = NULL;
+	isc_region_t r;
+	isc_lex_t *lex = NULL;
+	dns_rdatacallbacks_t callbacks;
+	isc_result_t result;
+
+	while (cmdline != NULL && *cmdline != 0 &&
+	       isspace((unsigned char)*cmdline))
+		cmdline++;
+
+	if (cmdline != NULL && *cmdline != 0) {
+		dns_rdatacallbacks_init(&callbacks);
+		result = isc_lex_create(mctx, strlen(cmdline), &lex);
+		check_result(result, "isc_lex_create");
+		isc_buffer_init(&source, cmdline, strlen(cmdline));
+		isc_buffer_add(&source, strlen(cmdline));
+		result = isc_lex_openbuffer(lex, &source);
+		check_result(result, "isc_lex_openbuffer");
+		result = isc_buffer_allocate(mctx, &buf, MAXWIRE);
+		check_result(result, "isc_buffer_allocate");
+		result = dns_rdata_fromtext(rdata, rdataclass, rdatatype, lex,
+					    dns_rootname, 0, mctx, buf,
+					    &callbacks);
+		isc_lex_destroy(&lex);
+		if (result == ISC_R_SUCCESS) {
+			isc_buffer_usedregion(buf, &r);
+			result = isc_buffer_allocate(mctx, &newbuf, r.length);
+			check_result(result, "isc_buffer_allocate");
+			isc_buffer_putmem(newbuf, r.base, r.length);
+			isc_buffer_usedregion(newbuf, &r);
+			dns_rdata_reset(rdata);
+			dns_rdata_fromregion(rdata, rdataclass, rdatatype, &r);
+			isc_buffer_free(&buf);
+			ISC_LIST_APPEND(usedbuffers, newbuf, link);
+		} else {
+			fprintf(stderr, "invalid rdata format: %s\n",
+				isc_result_totext(result));
+			isc_buffer_free(&buf);
+			exit(1);
+		}
+	} else {
+		rdata->flags = DNS_RDATA_UPDATE;
+	}
+	*cmdlinep = cmdline;
+}
+
+static void
+update_addordelete(isc_mem_t *mctx, char *cmdline, bool isdelete,
+		   dns_name_t *name)
+{
+	isc_result_t result;
+	uint32_t ttl;
+	char *word;
+	dns_rdataclass_t rdataclass;
+	dns_rdatatype_t rdatatype;
+	dns_rdata_t *rdata = NULL;
+	dns_rdatalist_t *rdatalist = NULL;
+	dns_rdataset_t *rdataset = NULL;
+	isc_textregion_t region;
+
+	/*
+	 * Read the owner name.
+	 */
+	parse_name(&cmdline, name);
+
+	rdata = isc_mem_get(mctx, sizeof(*rdata));
+	if (rdata == NULL) {
+		fprintf(stderr, "memory allocation for rdata failed\n");
+		exit(1);
+	}
+	dns_rdata_init(rdata);
+
+	/*
+	 * If this is an add, read the TTL and verify that it's in range.
+	 * If it's a delete, ignore a TTL if present (for compatibility).
+	 */
+	word = nsu_strsep(&cmdline, " \t\r\n");
+	if (word == NULL || *word == 0) {
+		if (!isdelete) {
+			fprintf(stderr, "could not read owner ttl\n");
+			exit(1);
+		}
+		else {
+			ttl = 0;
+			rdataclass = dns_rdataclass_any;
+			rdatatype = dns_rdatatype_any;
+			rdata->flags = DNS_RDATA_UPDATE;
+			goto doneparsing;
+		}
+	}
+	result = isc_parse_uint32(&ttl, word, 10);
+	if (result != ISC_R_SUCCESS) {
+		if (isdelete) {
+			ttl = 0;
+			goto parseclass;
+		} else {
+			fprintf(stderr, "ttl '%s': %s\n", word,
+				isc_result_totext(result));
+			exit(1);
+		}
+	}
+
+	if (isdelete)
+		ttl = 0;
+	else if (ttl > TTL_MAX) {
+		fprintf(stderr, "ttl '%s' is out of range (0 to %u)\n",
+			word, TTL_MAX);
+		exit(1);
+	}
+
+	/*
+	 * Read the class or type.
+	 */
+	word = nsu_strsep(&cmdline, " \t\r\n");
+ parseclass:
+	if (word == NULL || *word == 0) {
+		if (isdelete) {
+			rdataclass = dns_rdataclass_any;
+			rdatatype = dns_rdatatype_any;
+			rdata->flags = DNS_RDATA_UPDATE;
+		goto doneparsing;
+		} else {
+			fprintf(stderr, "could not read class or type\n");
+			exit(1);
+		}
+	}
+	region.base = word;
+	region.length = strlen(word);
+	result = dns_rdataclass_fromtext(&rdataclass, &region);
+	if (result == ISC_R_SUCCESS) {
+		/*
+		 * Now read the type.
+		 */
+		word = nsu_strsep(&cmdline, " \t\r\n");
+		if (word == NULL || *word == 0) {
+			if (isdelete) {
+				rdataclass = dns_rdataclass_any;
+				rdatatype = dns_rdatatype_any;
+				rdata->flags = DNS_RDATA_UPDATE;
+				goto doneparsing;
+			} else {
+				fprintf(stderr, "could not read type\n");
+				exit(1);
+			}
+		}
+		region.base = word;
+		region.length = strlen(word);
+		result = dns_rdatatype_fromtext(&rdatatype, &region);
+		if (result != ISC_R_SUCCESS) {
+			fprintf(stderr, "'%s' is not a valid type: %s\n",
+				word, isc_result_totext(result));
+			exit(1);
+		}
+	} else {
+		rdataclass = default_rdataclass;
+		result = dns_rdatatype_fromtext(&rdatatype, &region);
+		if (result != ISC_R_SUCCESS) {
+			fprintf(stderr, "'%s' is not a valid class or type: "
+				"%s\n", word, isc_result_totext(result));
+			exit(1);
+		}
+	}
+
+	parse_rdata(mctx, &cmdline, rdataclass, rdatatype, rdata);
+
+	if (isdelete) {
+		if ((rdata->flags & DNS_RDATA_UPDATE) != 0)
+			rdataclass = dns_rdataclass_any;
+		else
+			rdataclass = dns_rdataclass_none;
+	} else {
+		if ((rdata->flags & DNS_RDATA_UPDATE) != 0) {
+			fprintf(stderr, "could not read rdata\n");
+			exit(1);
+		}
+	}
+
+ doneparsing:
+
+	rdatalist = isc_mem_get(mctx, sizeof(*rdatalist));
+	if (rdatalist == NULL) {
+		fprintf(stderr, "memory allocation for rdatalist failed\n");
+		exit(1);
+	}
+	dns_rdatalist_init(rdatalist);
+	rdatalist->type = rdatatype;
+	rdatalist->rdclass = rdataclass;
+	rdatalist->covers = rdatatype;
+	rdatalist->ttl = (dns_ttl_t)ttl;
+	ISC_LIST_APPEND(rdatalist->rdata, rdata, link);
+	ISC_LIST_APPEND(usedrdatalists, rdatalist, link);
+
+	rdataset = isc_mem_get(mctx, sizeof(*rdataset));
+	if (rdataset == NULL) {
+		fprintf(stderr, "memory allocation for rdataset failed\n");
+		exit(1);
+	}
+	dns_rdataset_init(rdataset);
+	dns_rdatalist_tordataset(rdatalist, rdataset);
+	dns_rdataset_setownercase(rdataset, name);
+	ISC_LIST_INIT(name->list);
+	ISC_LIST_APPEND(name->list, rdataset, link);
+}
+
+static void
+make_prereq(isc_mem_t *mctx, char *cmdline, bool ispositive,
+	    bool isrrset, dns_name_t *name)
+{
+	isc_result_t result;
+	char *word;
+	isc_textregion_t region;
+	dns_rdataset_t *rdataset = NULL;
+	dns_rdatalist_t *rdatalist = NULL;
+	dns_rdataclass_t rdataclass;
+	dns_rdatatype_t rdatatype;
+	dns_rdata_t *rdata = NULL;
+
+	/*
+	 * Read the owner name
+	 */
+	parse_name(&cmdline, name);
+
+	/*
+	 * If this is an rrset prereq, read the class or type.
+	 */
+	if (isrrset) {
+		word = nsu_strsep(&cmdline, " \t\r\n");
+		if (word == NULL || *word == 0) {
+			fprintf(stderr, "could not read class or type\n");
+			exit(1);
+		}
+		region.base = word;
+		region.length = strlen(word);
+		result = dns_rdataclass_fromtext(&rdataclass, &region);
+		if (result == ISC_R_SUCCESS) {
+			/*
+			 * Now read the type.
+			 */
+			word = nsu_strsep(&cmdline, " \t\r\n");
+			if (word == NULL || *word == 0) {
+				fprintf(stderr, "could not read type\n");
+				exit(1);
+			}
+			region.base = word;
+			region.length = strlen(word);
+			result = dns_rdatatype_fromtext(&rdatatype, &region);
+			if (result != ISC_R_SUCCESS) {
+				fprintf(stderr, "invalid type: %s\n", word);
+				exit(1);
+			}
+		} else {
+			rdataclass = default_rdataclass;
+			result = dns_rdatatype_fromtext(&rdatatype, &region);
+			if (result != ISC_R_SUCCESS) {
+				fprintf(stderr, "invalid type: %s\n", word);
+				exit(1);
+			}
+		}
+	} else
+		rdatatype = dns_rdatatype_any;
+
+	rdata = isc_mem_get(mctx, sizeof(*rdata));
+	if (rdata == NULL) {
+		fprintf(stderr, "memory allocation for rdata failed\n");
+		exit(1);
+	}
+	dns_rdata_init(rdata);
+
+	if (isrrset && ispositive)
+		parse_rdata(mctx, &cmdline, rdataclass, rdatatype, rdata);
+	else
+		rdata->flags = DNS_RDATA_UPDATE;
+
+	rdatalist = isc_mem_get(mctx, sizeof(*rdatalist));
+	if (rdatalist == NULL) {
+		fprintf(stderr, "memory allocation for rdatalist failed\n");
+		exit(1);
+	}
+	dns_rdatalist_init(rdatalist);
+	rdatalist->type = rdatatype;
+	if (ispositive) {
+		if (isrrset && rdata->data != NULL)
+			rdatalist->rdclass = rdataclass;
+		else
+			rdatalist->rdclass = dns_rdataclass_any;
+	} else
+		rdatalist->rdclass = dns_rdataclass_none;
+	rdata->rdclass = rdatalist->rdclass;
+	rdata->type = rdatatype;
+	ISC_LIST_APPEND(rdatalist->rdata, rdata, link);
+	ISC_LIST_APPEND(usedrdatalists, rdatalist, link);
+
+	rdataset = isc_mem_get(mctx, sizeof(*rdataset));
+	if (rdataset == NULL) {
+		fprintf(stderr, "memory allocation for rdataset failed\n");
+		exit(1);
+	}
+	dns_rdataset_init(rdataset);
+	dns_rdatalist_tordataset(rdatalist, rdataset);
+	dns_rdataset_setownercase(rdataset, name);
+	ISC_LIST_INIT(name->list);
+	ISC_LIST_APPEND(name->list, rdataset, link);
+}
+
+static void
+evaluate_prereq(isc_mem_t *mctx, char *cmdline, dns_name_t *name) {
+	char *word;
+	bool ispositive, isrrset;
+
+	word = nsu_strsep(&cmdline, " \t\r\n");
+	if (word == NULL || *word == 0) {
+		fprintf(stderr, "could not read operation code\n");
+		exit(1);
+	}
+	if (strcasecmp(word, "nxdomain") == 0) {
+		ispositive = false;
+		isrrset = false;
+	} else if (strcasecmp(word, "yxdomain") == 0) {
+		ispositive = true;
+		isrrset = false;
+	} else if (strcasecmp(word, "nxrrset") == 0) {
+		ispositive = false;
+		isrrset = true;
+	} else if (strcasecmp(word, "yxrrset") == 0) {
+		ispositive = true;
+		isrrset = true;
+	} else {
+		fprintf(stderr, "incorrect operation code: %s\n", word);
+		exit(1);
+	}
+
+	make_prereq(mctx, cmdline, ispositive, isrrset, name);
+}
+
+static void
+setup_tsec(char *keyfile, isc_mem_t *mctx) {
+	dst_key_t *dstkey = NULL;
+	isc_result_t result;
+	dns_tsectype_t tsectype;
+
+	result = dst_key_fromnamedfile(keyfile, NULL,
+				       DST_TYPE_PRIVATE | DST_TYPE_KEY, mctx,
+				       &dstkey);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "could not read key from %s: %s\n",
+			keyfile, isc_result_totext(result));
+		exit(1);
+	}
+
+	if (dst_key_alg(dstkey) == DST_ALG_HMACMD5)
+		tsectype = dns_tsectype_tsig;
+	else
+		tsectype = dns_tsectype_sig0;
+
+	result = dns_tsec_create(mctx, tsectype, dstkey, &tsec);
+	dst_key_free(&dstkey);
+	if (result != ISC_R_SUCCESS) {
+		fprintf(stderr, "could not create tsec: %s\n",
+			isc_result_totext(result));
+		exit(1);
+	}
+}
diff --git a/lib/samples/win32/async.dsp.in b/lib/samples/win32/async.dsp.in
new file mode 100644
index 0000000..35dfb6b
--- /dev/null
+++ b/lib/samples/win32/async.dsp.in
@@ -0,0 +1,103 @@
+# Microsoft Developer Studio Project File - Name="async" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "@PLATFORM@ (x86) Console Application" 0x0103
+
+CFG=async - @PLATFORM@ Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE 
+!MESSAGE NMAKE /f "async.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "async.mak" CFG="async - @PLATFORM@ Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "async - @PLATFORM@ Release" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE "async - @PLATFORM@ Debug" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "async - @PLATFORM@ Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Release"
+# PROP Intermediate_Dir "Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 @COPTX@ @COPTI@ /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /c
+# ADD CPP /nologo /MD /W3 @COPTX@ @COPTI@ /O2 /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "NDEBUG" /D "__STDC__" /D "WIN32" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console @MACHINE@
+# ADD LINK32 user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Release/libisc.lib ../../dns/win32/Release/libdns.lib ../../isccfg/win32/Release/libisccfg.lib /nologo /subsystem:console @MACHINE@ /out:"../../../Build/Release/sample-async.exe"
+
+!ELSEIF  "$(CFG)" == "async - @PLATFORM@ Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Debug"
+# PROP Intermediate_Dir "Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "_DEBUG" /D "WIN32" /D "__STDC__" /D "_CONSOLE" /D "_MBCS" /FR /FD /GZ /c
+# SUBTRACT CPP /X @COPTY@
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug @MACHINE@ /pdbtype:sept
+# ADD LINK32 user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Debug/libisc.lib ../../dns/win32/Debug/libdns.lib ../../isccfg/win32/Debug/libisccfg.lib /nologo /subsystem:console /debug @MACHINE@ /out:"../../../Build/Debug/sample-async.exe" /pdbtype:sept
+
+!ENDIF 
+
+# Begin Target
+
+# Name "async - @PLATFORM@ Release"
+# Name "async - @PLATFORM@ Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE="..\sample-async.c"
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# End Group
+# Begin Group "Resource Files"
+
+# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+# End Group
+# End Target
+# End Project
diff --git a/lib/samples/win32/async.dsw b/lib/samples/win32/async.dsw
new file mode 100644
index 0000000..f5be775
--- /dev/null
+++ b/lib/samples/win32/async.dsw
@@ -0,0 +1,29 @@
+Microsoft Developer Studio Workspace File, Format Version 6.00

+# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!

+

+###############################################################################

+

+Project: "async"=".\async.dsp" - Package Owner=<4>

+

+Package=<5>

+{{{

+}}}

+

+Package=<4>

+{{{

+}}}

+

+###############################################################################

+

+Global:

+

+Package=<5>

+{{{

+}}}

+

+Package=<3>

+{{{

+}}}

+

+###############################################################################

+

diff --git a/lib/samples/win32/async.mak.in b/lib/samples/win32/async.mak.in
new file mode 100644
index 0000000..13e59c1
--- /dev/null
+++ b/lib/samples/win32/async.mak.in
@@ -0,0 +1,299 @@
+# Microsoft Developer Studio Generated NMAKE File, Based on async.dsp
+!IF "$(CFG)" == ""
+CFG=async - @PLATFORM@ Debug
+!MESSAGE No configuration specified. Defaulting to async - @PLATFORM@ Debug.
+!ENDIF 
+
+!IF "$(CFG)" != "async - @PLATFORM@ Release" && "$(CFG)" != "async - @PLATFORM@ Debug"
+!MESSAGE Invalid configuration "$(CFG)" specified.
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "async.mak" CFG="async - @PLATFORM@ Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "async - @PLATFORM@ Release" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE "async - @PLATFORM@ Debug" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE 
+!ERROR An invalid configuration is specified.
+!ENDIF 
+
+!IF "$(OS)" == "Windows_NT"
+NULL=
+!ELSE 
+NULL=nul
+!ENDIF 
+
+!IF  "$(CFG)" == "async - @PLATFORM@ Release"
+_VC_MANIFEST_INC=0
+_VC_MANIFEST_BASENAME=__VC80
+!ELSE
+_VC_MANIFEST_INC=1
+_VC_MANIFEST_BASENAME=__VC80.Debug
+!ENDIF
+
+####################################################
+# Specifying name of temporary resource file used only in incremental builds:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+_VC_MANIFEST_AUTO_RES=$(_VC_MANIFEST_BASENAME).auto.res
+!else
+_VC_MANIFEST_AUTO_RES=
+!endif
+
+####################################################
+# _VC_MANIFEST_EMBED_EXE - command to embed manifest in EXE:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+#MT_SPECIAL_RETURN=1090650113
+#MT_SPECIAL_SWITCH=-notify_resource_update
+MT_SPECIAL_RETURN=0
+MT_SPECIAL_SWITCH=
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -out:$(_VC_MANIFEST_BASENAME).auto.manifest $(MT_SPECIAL_SWITCH) & \
+if "%ERRORLEVEL%" == "$(MT_SPECIAL_RETURN)" \
+rc /r $(_VC_MANIFEST_BASENAME).auto.rc & \
+link $** /out:$@ $(LFLAGS)
+
+!else
+
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -outputresource:$@;1
+
+!endif
+
+####################################################
+# _VC_MANIFEST_EMBED_DLL - command to embed manifest in DLL:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+#MT_SPECIAL_RETURN=1090650113
+#MT_SPECIAL_SWITCH=-notify_resource_update
+MT_SPECIAL_RETURN=0
+MT_SPECIAL_SWITCH=
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -out:$(_VC_MANIFEST_BASENAME).auto.manifest $(MT_SPECIAL_SWITCH) & \
+if "%ERRORLEVEL%" == "$(MT_SPECIAL_RETURN)" \
+rc /r $(_VC_MANIFEST_BASENAME).auto.rc & \
+link $** /out:$@ $(LFLAGS)
+
+!else
+
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -outputresource:$@;2
+
+!endif
+####################################################
+# _VC_MANIFEST_CLEAN - command to clean resources files generated temporarily:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+_VC_MANIFEST_CLEAN=-del $(_VC_MANIFEST_BASENAME).auto.res \
+    $(_VC_MANIFEST_BASENAME).auto.rc \
+    $(_VC_MANIFEST_BASENAME).auto.manifest
+
+!else
+
+_VC_MANIFEST_CLEAN=
+
+!endif
+
+!IF  "$(CFG)" == "async - @PLATFORM@ Release"
+
+OUTDIR=.\Release
+INTDIR=.\Release
+
+ALL : "..\..\..\Build\Release\sample-async.exe"
+
+
+CLEAN :
+	-@erase "$(INTDIR)\sample-async.obj"
+	-@erase "$(INTDIR)\vc60.idb"
+	-@erase "..\..\..\Build\Release\sample-async.exe"
+	-@$(_VC_MANIFEST_CLEAN)
+
+"$(OUTDIR)" :
+    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
+
+CPP=cl.exe
+CPP_PROJ=/nologo /MD /W3 @COPTX@ @COPTI@ /O2 /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "NDEBUG" /D "__STDC__" /D "WIN32" /D "_CONSOLE" /D "_MBCS" /Fp"$(INTDIR)\sample-async.pch" @COPTY@ /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /c 
+
+.c{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.c{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+RSC=rc.exe
+BSC32=bscmake.exe
+BSC32_FLAGS=/nologo /o"$(OUTDIR)\sample-async.bsc" 
+BSC32_SBRS= \
+	
+LINK32=link.exe
+LINK32_FLAGS=user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Release/libisc.lib ../../dns/win32/Release/libdns.lib ../../isccfg/win32/Release/libisccfg.lib /nologo /subsystem:console /incremental:no /pdb:"$(OUTDIR)\sample-async.pdb" @MACHINE@ /out:"../../../Build/Release/sample-async.exe" 
+LINK32_OBJS= \
+	"$(INTDIR)\sample-async.obj"
+
+"..\..\..\Build\Release\sample-async.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS)
+    $(LINK32) @<<
+  $(LINK32_FLAGS) $(LINK32_OBJS)
+<<
+    $(_VC_MANIFEST_EMBED_EXE)
+
+!ELSEIF  "$(CFG)" == "async - @PLATFORM@ Debug"
+
+OUTDIR=.\Debug
+INTDIR=.\Debug
+# Begin Custom Macros
+OutDir=.\Debug
+# End Custom Macros
+
+ALL : "..\..\..\Build\Debug\sample-async.exe" "$(OUTDIR)\sample-async.bsc"
+
+
+CLEAN :
+	-@erase "$(INTDIR)\sample-async.obj"
+	-@erase "$(INTDIR)\sample-async.sbr"
+	-@erase "$(INTDIR)\vc60.idb"
+	-@erase "$(INTDIR)\vc60.pdb"
+	-@erase "$(OUTDIR)\sample-async.pdb"
+	-@erase "$(OUTDIR)\sample-async.bsc"
+	-@erase "..\..\..\Build\Debug\sample-async.exe"
+	-@erase "..\..\..\Build\Debug\sample-async.ilk"
+	-@$(_VC_MANIFEST_CLEAN)
+
+"$(OUTDIR)" :
+    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
+
+CPP=cl.exe
+CPP_PROJ=/nologo /MDd /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "_DEBUG" /D "WIN32" /D "__STDC__" /D "_CONSOLE" /D "_MBCS" /FR"$(INTDIR)\\" /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /GZ /c 
+
+.c{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.c{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+RSC=rc.exe
+BSC32=bscmake.exe
+BSC32_FLAGS=/nologo /o"$(OUTDIR)\sample-async.bsc" 
+BSC32_SBRS= \
+	"$(INTDIR)\sample-async.sbr"
+
+"$(OUTDIR)\sample-async.bsc" : "$(OUTDIR)" $(BSC32_SBRS)
+    $(BSC32) @<<
+  $(BSC32_FLAGS) $(BSC32_SBRS)
+<<
+
+LINK32=link.exe
+LINK32_FLAGS=user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Debug/libisc.lib ../../dns/win32/Debug/libdns.lib ../../isccfg/win32/Debug/libisccfg.lib /nologo /subsystem:console /incremental:yes /pdb:"$(OUTDIR)\sample-async.pdb" /debug @MACHINE@ /out:"../../../Build/Debug/sample-async.exe" /pdbtype:sept 
+LINK32_OBJS= \
+	"$(INTDIR)\sample-async.obj"
+
+"..\..\..\Build\Debug\sample-async.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS)
+    $(LINK32) @<<
+  $(LINK32_FLAGS) $(LINK32_OBJS)
+<<
+    $(_VC_MANIFEST_EMBED_EXE)
+
+!ENDIF 
+
+
+!IF "$(NO_EXTERNAL_DEPS)" != "1"
+!IF EXISTS("sample-async.dep")
+!INCLUDE "sample-async.dep"
+!ELSE 
+!MESSAGE Warning: cannot find "sample-async.dep"
+!ENDIF 
+!ENDIF 
+
+
+!IF "$(CFG)" == "async - @PLATFORM@ Release" || "$(CFG)" == "async - @PLATFORM@ Debug"
+SOURCE="..\sample-async.c"
+
+!IF  "$(CFG)" == "async - @PLATFORM@ Release"
+
+
+"$(INTDIR)\sample-async.obj" : $(SOURCE) "$(INTDIR)"
+	$(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+!ELSEIF  "$(CFG)" == "async - @PLATFORM@ Debug"
+
+
+"$(INTDIR)\sample-async.obj"	"$(INTDIR)\sample-async.sbr" : $(SOURCE) "$(INTDIR)"
+	$(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+!ENDIF 
+
+!ENDIF 
+
+####################################################
+# Commands to generate initial empty manifest file and the RC file
+# that references it, and for generating the .res file:
+
+$(_VC_MANIFEST_BASENAME).auto.res : $(_VC_MANIFEST_BASENAME).auto.rc
+
+$(_VC_MANIFEST_BASENAME).auto.rc : $(_VC_MANIFEST_BASENAME).auto.manifest
+    type <<$@
+#include <winuser.h>
+1RT_MANIFEST"$(_VC_MANIFEST_BASENAME).auto.manifest"
+<< KEEP
+
+$(_VC_MANIFEST_BASENAME).auto.manifest :
+    type <<$@
+<?xml version='1.0' encoding='UTF-8' standalone='yes'?>
+<assembly xmlns='urn:schemas-microsoft-com:asm.v1' manifestVersion='1.0'>
+</assembly>
+<< KEEP
diff --git a/lib/samples/win32/async.vcxproj.filters.in b/lib/samples/win32/async.vcxproj.filters.in
new file mode 100644
index 0000000..2698e21
--- /dev/null
+++ b/lib/samples/win32/async.vcxproj.filters.in
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\sample-async.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/lib/samples/win32/async.vcxproj.in b/lib/samples/win32/async.vcxproj.in
new file mode 100644
index 0000000..b4fb8d9
--- /dev/null
+++ b/lib/samples/win32/async.vcxproj.in
@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|@PLATFORM@">
+      <Configuration>Debug</Configuration>
+      <Platform>@PLATFORM@</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|@PLATFORM@">
+      <Configuration>Release</Configuration>
+      <Platform>@PLATFORM@</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{9FC33CA3-CE4A-4EDF-BA99-EECA4B81AD06}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>async</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <LinkIncremental>true</LinkIncremental>
+    <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+    <IntDir>.\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <LinkIncremental>false</LinkIncremental>
+    <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+    <IntDir>.\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <PrecompiledHeaderOutputFile>.\$(Configuration)\$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\$(Configuration)\</AssemblerListingLocation>
+      <ObjectFileName>.\$(Configuration)\</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <BrowseInformation>true</BrowseInformation>
+      <AdditionalIncludeDirectories>..\..\..\;@LIBXML2_INC@@OPENSSL_INC@..\..\isc\win32;..\..\isc\win32\include;..\..\isc\include;..\..\dns\win32\include;..\..\dns\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <CompileAs>CompileAsC</CompileAs>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <OutputFile>..\..\..\Build\$(Configuration)\$(TargetName)$(TargetExt)</OutputFile>
+      <AdditionalLibraryDirectories>..\..\isc\win32\$(Configuration);..\..\dns\win32\$(Configuration);..\..\isccfg\win32\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libisc.lib;libdns.lib;libisccfg.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>@INTRINSIC@</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
+      <WholeProgramOptimization>false</WholeProgramOptimization>
+      <StringPooling>true</StringPooling>
+      <PrecompiledHeaderOutputFile>.\$(Configuration)\$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\$(Configuration)\</AssemblerListingLocation>
+      <ObjectFileName>.\$(Configuration)\</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <AdditionalIncludeDirectories>..\..\..\;@LIBXML2_INC@@OPENSSL_INC@..\..\isc\win32;..\..\isc\win32\include;..\..\isc\include;..\..\dns\win32\include;..\..\dns\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <CompileAs>CompileAsC</CompileAs>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <OutputFile>..\..\..\Build\$(Configuration)\$(TargetName)$(TargetExt)</OutputFile>
+      <LinkTimeCodeGeneration>Default</LinkTimeCodeGeneration>
+      <AdditionalLibraryDirectories>..\..\isc\win32\$(Configuration);..\..\dns\win32\$(Configuration);..\..\isccfg\win32\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libisc.lib;libdns.lib;libisccfg.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\sample-async.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
diff --git a/lib/samples/win32/async.vcxproj.user b/lib/samples/win32/async.vcxproj.user
new file mode 100644
index 0000000..695b5c7
--- /dev/null
+++ b/lib/samples/win32/async.vcxproj.user
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+</Project>
\ No newline at end of file
diff --git a/lib/samples/win32/gai.dsp.in b/lib/samples/win32/gai.dsp.in
new file mode 100644
index 0000000..9282955
--- /dev/null
+++ b/lib/samples/win32/gai.dsp.in
@@ -0,0 +1,103 @@
+# Microsoft Developer Studio Project File - Name="gai" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "@PLATFORM@ (x86) Console Application" 0x0103
+
+CFG=gai - @PLATFORM@ Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE 
+!MESSAGE NMAKE /f "gai.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "gai.mak" CFG="gai - @PLATFORM@ Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "gai - @PLATFORM@ Release" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE "gai - @PLATFORM@ Debug" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "gai - @PLATFORM@ Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Release"
+# PROP Intermediate_Dir "Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 @COPTX@ @COPTI@ /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /c
+# ADD CPP /nologo /MD /W3 @COPTX@ @COPTI@ /O2 /I "../../../" @LIBXML2_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /I "../../irs/win32/include" /I "../../irs/include" /D "NDEBUG" /D "__STDC__" /D "WIN32" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console @MACHINE@
+# ADD LINK32 user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Release/libisc.lib ../../dns/win32/Release/libdns.lib ../../isccfg/win32/Release/libisccfg.lib ../../irs/win32/Release/libirs.lib /nologo /subsystem:console @MACHINE@ /out:"../../../Build/Release/sample-gai.exe"
+
+!ELSEIF  "$(CFG)" == "gai - @PLATFORM@ Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Debug"
+# PROP Intermediate_Dir "Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /I "../../../" @LIBXML2_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /I "../../irs/win32/include" /I "../../irs/include" /D "_DEBUG" /D "WIN32" /D "__STDC__" /D "_CONSOLE" /D "_MBCS" /FR /FD /GZ /c
+# SUBTRACT CPP /X @COPTY@
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug @MACHINE@ /pdbtype:sept
+# ADD LINK32 user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Debug/libisc.lib ../../dns/win32/Debug/libdns.lib ../../isccfg/win32/Debug/libisccfg.lib ../../irs/win32/Debug/libirs.lib /nologo /subsystem:console /debug @MACHINE@ /out:"../../../Build/Debug/sample-gai.exe" /pdbtype:sept
+
+!ENDIF 
+
+# Begin Target
+
+# Name "gai - @PLATFORM@ Release"
+# Name "gai - @PLATFORM@ Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE="..\sample-gai.c"
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# End Group
+# Begin Group "Resource Files"
+
+# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+# End Group
+# End Target
+# End Project
diff --git a/lib/samples/win32/gai.dsw b/lib/samples/win32/gai.dsw
new file mode 100644
index 0000000..d294056
--- /dev/null
+++ b/lib/samples/win32/gai.dsw
@@ -0,0 +1,29 @@
+Microsoft Developer Studio Workspace File, Format Version 6.00

+# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!

+

+###############################################################################

+

+Project: "gai"=".\gai.dsp" - Package Owner=<4>

+

+Package=<5>

+{{{

+}}}

+

+Package=<4>

+{{{

+}}}

+

+###############################################################################

+

+Global:

+

+Package=<5>

+{{{

+}}}

+

+Package=<3>

+{{{

+}}}

+

+###############################################################################

+

diff --git a/lib/samples/win32/gai.mak.in b/lib/samples/win32/gai.mak.in
new file mode 100644
index 0000000..39cd2fb
--- /dev/null
+++ b/lib/samples/win32/gai.mak.in
@@ -0,0 +1,299 @@
+# Microsoft Developer Studio Generated NMAKE File, Based on gai.dsp
+!IF "$(CFG)" == ""
+CFG=gai - @PLATFORM@ Debug
+!MESSAGE No configuration specified. Defaulting to gai - @PLATFORM@ Debug.
+!ENDIF 
+
+!IF "$(CFG)" != "gai - @PLATFORM@ Release" && "$(CFG)" != "gai - @PLATFORM@ Debug"
+!MESSAGE Invalid configuration "$(CFG)" specified.
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "gai.mak" CFG="gai - @PLATFORM@ Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "gai - @PLATFORM@ Release" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE "gai - @PLATFORM@ Debug" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE 
+!ERROR An invalid configuration is specified.
+!ENDIF 
+
+!IF "$(OS)" == "Windows_NT"
+NULL=
+!ELSE 
+NULL=nul
+!ENDIF 
+
+!IF  "$(CFG)" == "gai - @PLATFORM@ Release"
+_VC_MANIFEST_INC=0
+_VC_MANIFEST_BASENAME=__VC80
+!ELSE
+_VC_MANIFEST_INC=1
+_VC_MANIFEST_BASENAME=__VC80.Debug
+!ENDIF
+
+####################################################
+# Specifying name of temporary resource file used only in incremental builds:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+_VC_MANIFEST_AUTO_RES=$(_VC_MANIFEST_BASENAME).auto.res
+!else
+_VC_MANIFEST_AUTO_RES=
+!endif
+
+####################################################
+# _VC_MANIFEST_EMBED_EXE - command to embed manifest in EXE:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+#MT_SPECIAL_RETURN=1090650113
+#MT_SPECIAL_SWITCH=-notify_resource_update
+MT_SPECIAL_RETURN=0
+MT_SPECIAL_SWITCH=
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -out:$(_VC_MANIFEST_BASENAME).auto.manifest $(MT_SPECIAL_SWITCH) & \
+if "%ERRORLEVEL%" == "$(MT_SPECIAL_RETURN)" \
+rc /r $(_VC_MANIFEST_BASENAME).auto.rc & \
+link $** /out:$@ $(LFLAGS)
+
+!else
+
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -outputresource:$@;1
+
+!endif
+
+####################################################
+# _VC_MANIFEST_EMBED_DLL - command to embed manifest in DLL:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+#MT_SPECIAL_RETURN=1090650113
+#MT_SPECIAL_SWITCH=-notify_resource_update
+MT_SPECIAL_RETURN=0
+MT_SPECIAL_SWITCH=
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -out:$(_VC_MANIFEST_BASENAME).auto.manifest $(MT_SPECIAL_SWITCH) & \
+if "%ERRORLEVEL%" == "$(MT_SPECIAL_RETURN)" \
+rc /r $(_VC_MANIFEST_BASENAME).auto.rc & \
+link $** /out:$@ $(LFLAGS)
+
+!else
+
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -outputresource:$@;2
+
+!endif
+####################################################
+# _VC_MANIFEST_CLEAN - command to clean resources files generated temporarily:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+_VC_MANIFEST_CLEAN=-del $(_VC_MANIFEST_BASENAME).auto.res \
+    $(_VC_MANIFEST_BASENAME).auto.rc \
+    $(_VC_MANIFEST_BASENAME).auto.manifest
+
+!else
+
+_VC_MANIFEST_CLEAN=
+
+!endif
+
+!IF  "$(CFG)" == "gai - @PLATFORM@ Release"
+
+OUTDIR=.\Release
+INTDIR=.\Release
+
+ALL : "..\..\..\Build\Release\sample-gai.exe"
+
+
+CLEAN :
+	-@erase "$(INTDIR)\sample-gai.obj"
+	-@erase "$(INTDIR)\vc60.idb"
+	-@erase "..\..\..\Build\Release\sample-gai.exe"
+	-@$(_VC_MANIFEST_CLEAN)
+
+"$(OUTDIR)" :
+    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
+
+CPP=cl.exe
+CPP_PROJ=/nologo /MD /W3 @COPTX@ @COPTI@ /O2 /I "../../../" @LIBXML2_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /I "../../irs/win32/include" /I "../../irs/include" /D "NDEBUG" /D "__STDC__" /D "WIN32" /D "_CONSOLE" /D "_MBCS" /Fp"$(INTDIR)\sample-gai.pch" @COPTY@ /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /c 
+
+.c{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.c{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+RSC=rc.exe
+BSC32=bscmake.exe
+BSC32_FLAGS=/nologo /o"$(OUTDIR)\sample-gai.bsc" 
+BSC32_SBRS= \
+	
+LINK32=link.exe
+LINK32_FLAGS=user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Release/libisc.lib ../../dns/win32/Release/libdns.lib ../../isccfg/win32/Release/libisccfg.lib ../../irs/win32/Release/libirs.lib /nologo /subsystem:console /incremental:no /pdb:"$(OUTDIR)\sample-gai.pdb" @MACHINE@ /out:"../../../Build/Release/sample-gai.exe" 
+LINK32_OBJS= \
+	"$(INTDIR)\sample-gai.obj"
+
+"..\..\..\Build\Release\sample-gai.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS)
+    $(LINK32) @<<
+  $(LINK32_FLAGS) $(LINK32_OBJS)
+<<
+    $(_VC_MANIFEST_EMBED_EXE)
+
+!ELSEIF  "$(CFG)" == "gai - @PLATFORM@ Debug"
+
+OUTDIR=.\Debug
+INTDIR=.\Debug
+# Begin Custom Macros
+OutDir=.\Debug
+# End Custom Macros
+
+ALL : "..\..\..\Build\Debug\sample-gai.exe" "$(OUTDIR)\sample-gai.bsc"
+
+
+CLEAN :
+	-@erase "$(INTDIR)\sample-gai.obj"
+	-@erase "$(INTDIR)\sample-gai.sbr"
+	-@erase "$(INTDIR)\vc60.idb"
+	-@erase "$(INTDIR)\vc60.pdb"
+	-@erase "$(OUTDIR)\sample-gai.pdb"
+	-@erase "$(OUTDIR)\sample-gai.bsc"
+	-@erase "..\..\..\Build\Debug\sample-gai.exe"
+	-@erase "..\..\..\Build\Debug\sample-gai.ilk"
+	-@$(_VC_MANIFEST_CLEAN)
+
+"$(OUTDIR)" :
+    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
+
+CPP=cl.exe
+CPP_PROJ=/nologo /MDd /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /I "../../../" @LIBXML2_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /I "../../irs/win32/include" /I "../../irs/include" /D "_DEBUG" /D "WIN32" /D "__STDC__" /D "_CONSOLE" /D "_MBCS" /FR"$(INTDIR)\\" /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /GZ /c 
+
+.c{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.c{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+RSC=rc.exe
+BSC32=bscmake.exe
+BSC32_FLAGS=/nologo /o"$(OUTDIR)\sample-gai.bsc" 
+BSC32_SBRS= \
+	"$(INTDIR)\sample-gai.sbr"
+
+"$(OUTDIR)\sample-gai.bsc" : "$(OUTDIR)" $(BSC32_SBRS)
+    $(BSC32) @<<
+  $(BSC32_FLAGS) $(BSC32_SBRS)
+<<
+
+LINK32=link.exe
+LINK32_FLAGS=user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Debug/libisc.lib ../../dns/win32/Debug/libdns.lib ../../isccfg/win32/Debug/libisccfg.lib ../../irs/win32/Debug/libirs.lib /nologo /subsystem:console /incremental:yes /pdb:"$(OUTDIR)\sample-gai.pdb" /debug @MACHINE@ /out:"../../../Build/Debug/sample-gai.exe" /pdbtype:sept 
+LINK32_OBJS= \
+	"$(INTDIR)\sample-gai.obj"
+
+"..\..\..\Build\Debug\sample-gai.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS)
+    $(LINK32) @<<
+  $(LINK32_FLAGS) $(LINK32_OBJS)
+<<
+    $(_VC_MANIFEST_EMBED_EXE)
+
+!ENDIF 
+
+
+!IF "$(NO_EXTERNAL_DEPS)" != "1"
+!IF EXISTS("sample-gai.dep")
+!INCLUDE "sample-gai.dep"
+!ELSE 
+!MESSAGE Warning: cannot find "sample-gai.dep"
+!ENDIF 
+!ENDIF 
+
+
+!IF "$(CFG)" == "gai - @PLATFORM@ Release" || "$(CFG)" == "gai - @PLATFORM@ Debug"
+SOURCE="..\sample-gai.c"
+
+!IF  "$(CFG)" == "gai - @PLATFORM@ Release"
+
+
+"$(INTDIR)\sample-gai.obj" : $(SOURCE) "$(INTDIR)"
+	$(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+!ELSEIF  "$(CFG)" == "gai - @PLATFORM@ Debug"
+
+
+"$(INTDIR)\sample-gai.obj"	"$(INTDIR)\sample-gai.sbr" : $(SOURCE) "$(INTDIR)"
+	$(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+!ENDIF 
+
+!ENDIF 
+
+####################################################
+# Commands to generate initial empty manifest file and the RC file
+# that references it, and for generating the .res file:
+
+$(_VC_MANIFEST_BASENAME).auto.res : $(_VC_MANIFEST_BASENAME).auto.rc
+
+$(_VC_MANIFEST_BASENAME).auto.rc : $(_VC_MANIFEST_BASENAME).auto.manifest
+    type <<$@
+#include <winuser.h>
+1RT_MANIFEST"$(_VC_MANIFEST_BASENAME).auto.manifest"
+<< KEEP
+
+$(_VC_MANIFEST_BASENAME).auto.manifest :
+    type <<$@
+<?xml version='1.0' encoding='UTF-8' standalone='yes'?>
+<assembly xmlns='urn:schemas-microsoft-com:asm.v1' manifestVersion='1.0'>
+</assembly>
+<< KEEP
diff --git a/lib/samples/win32/gai.vcxproj.filters.in b/lib/samples/win32/gai.vcxproj.filters.in
new file mode 100644
index 0000000..a709e03
--- /dev/null
+++ b/lib/samples/win32/gai.vcxproj.filters.in
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\sample-gai.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/lib/samples/win32/gai.vcxproj.in b/lib/samples/win32/gai.vcxproj.in
new file mode 100644
index 0000000..e177d89
--- /dev/null
+++ b/lib/samples/win32/gai.vcxproj.in
@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|@PLATFORM@">
+      <Configuration>Debug</Configuration>
+      <Platform>@PLATFORM@</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|@PLATFORM@">
+      <Configuration>Release</Configuration>
+      <Platform>@PLATFORM@</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{D42B8670-8DF6-4D90-90F7-DB5FB845AFAE}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>gai</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <LinkIncremental>true</LinkIncremental>
+    <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+    <IntDir>.\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <LinkIncremental>false</LinkIncremental>
+    <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+    <IntDir>.\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <PrecompiledHeaderOutputFile>.\$(Configuration)\$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\$(Configuration)\</AssemblerListingLocation>
+      <ObjectFileName>.\$(Configuration)\</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <BrowseInformation>true</BrowseInformation>
+      <AdditionalIncludeDirectories>..\..\..\;@LIBXML2_INC@..\..\isc\win32;..\..\isc\win32\include;..\..\isc\include;..\..\dns\win32\include;..\..\dns\include;..\..\irs\win32\include;..\..\irs\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <CompileAs>CompileAsC</CompileAs>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <OutputFile>..\..\..\Build\$(Configuration)\$(TargetName)$(TargetExt)</OutputFile>
+      <AdditionalLibraryDirectories>..\..\isc\win32\$(Configuration);..\..\dns\win32\$(Configuration);..\..\isccfg\win32\$(Configuration);..\..\irs\win32\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libisc.lib;libdns.lib;libisccfg.lib;libirs.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>@INTRINSIC@</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
+      <WholeProgramOptimization>false</WholeProgramOptimization>
+      <StringPooling>true</StringPooling>
+      <PrecompiledHeaderOutputFile>.\$(Configuration)\$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\$(Configuration)\</AssemblerListingLocation>
+      <ObjectFileName>.\$(Configuration)\</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <AdditionalIncludeDirectories>..\..\..\;@LIBXML2_INC@..\..\isc\win32;..\..\isc\win32\include;..\..\isc\include;..\..\dns\win32\include;..\..\dns\include;..\..\irs\win32\include;..\..\irs\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <CompileAs>CompileAsC</CompileAs>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <OutputFile>..\..\..\Build\$(Configuration)\$(TargetName)$(TargetExt)</OutputFile>
+      <LinkTimeCodeGeneration>Default</LinkTimeCodeGeneration>
+      <AdditionalLibraryDirectories>..\..\isc\win32\$(Configuration);..\..\dns\win32\$(Configuration);..\..\isccfg\win32\$(Configuration);..\..\irs\win32\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libisc.lib;libdns.lib;libisccfg.lib;libirs.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\sample-gai.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
diff --git a/lib/samples/win32/gai.vcxproj.user b/lib/samples/win32/gai.vcxproj.user
new file mode 100644
index 0000000..695b5c7
--- /dev/null
+++ b/lib/samples/win32/gai.vcxproj.user
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+</Project>
\ No newline at end of file
diff --git a/lib/samples/win32/nsprobe.dsp.in b/lib/samples/win32/nsprobe.dsp.in
new file mode 100644
index 0000000..5161a24
--- /dev/null
+++ b/lib/samples/win32/nsprobe.dsp.in
@@ -0,0 +1,103 @@
+# Microsoft Developer Studio Project File - Name="nsprobe" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "@PLATFORM@ (x86) Console Application" 0x0103
+
+CFG=nsprobe - @PLATFORM@ Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE 
+!MESSAGE NMAKE /f "nsprobe.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "nsprobe.mak" CFG="nsprobe - @PLATFORM@ Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "nsprobe - @PLATFORM@ Release" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE "nsprobe - @PLATFORM@ Debug" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "nsprobe - @PLATFORM@ Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Release"
+# PROP Intermediate_Dir "Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 @COPTX@ @COPTI@ /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /c
+# ADD CPP /nologo /MD /W3 @COPTX@ @COPTI@ /O2 /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "NDEBUG" /D "__STDC__" /D "WIN32" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console @MACHINE@
+# ADD LINK32 user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Release/libisc.lib ../../dns/win32/Release/libdns.lib ../../isccfg/win32/Release/libisccfg.lib /nologo /subsystem:console @MACHINE@ /out:"../../../Build/Release/nsprobe.exe"
+
+!ELSEIF  "$(CFG)" == "nsprobe - @PLATFORM@ Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Debug"
+# PROP Intermediate_Dir "Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "_DEBUG" /D "WIN32" /D "__STDC__" /D "_CONSOLE" /D "_MBCS" /FR /FD /GZ /c
+# SUBTRACT CPP /X @COPTY@
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug @MACHINE@ /pdbtype:sept
+# ADD LINK32 user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Debug/libisc.lib ../../dns/win32/Debug/libdns.lib ../../isccfg/win32/Debug/libisccfg.lib /nologo /subsystem:console /debug @MACHINE@ /out:"../../../Build/Debug/nsprobe.exe" /pdbtype:sept
+
+!ENDIF 
+
+# Begin Target
+
+# Name "nsprobe - @PLATFORM@ Release"
+# Name "nsprobe - @PLATFORM@ Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE="..\nsprobe.c"
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# End Group
+# Begin Group "Resource Files"
+
+# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+# End Group
+# End Target
+# End Project
diff --git a/lib/samples/win32/nsprobe.dsw b/lib/samples/win32/nsprobe.dsw
new file mode 100644
index 0000000..76ac5fb
--- /dev/null
+++ b/lib/samples/win32/nsprobe.dsw
@@ -0,0 +1,29 @@
+Microsoft Developer Studio Workspace File, Format Version 6.00

+# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!

+

+###############################################################################

+

+Project: "nsprobe"=".\nsprobe.dsp" - Package Owner=<4>

+

+Package=<5>

+{{{

+}}}

+

+Package=<4>

+{{{

+}}}

+

+###############################################################################

+

+Global:

+

+Package=<5>

+{{{

+}}}

+

+Package=<3>

+{{{

+}}}

+

+###############################################################################

+

diff --git a/lib/samples/win32/nsprobe.mak.in b/lib/samples/win32/nsprobe.mak.in
new file mode 100644
index 0000000..5efcdb0
--- /dev/null
+++ b/lib/samples/win32/nsprobe.mak.in
@@ -0,0 +1,299 @@
+# Microsoft Developer Studio Generated NMAKE File, Based on nsprobe.dsp
+!IF "$(CFG)" == ""
+CFG=nsprobe - @PLATFORM@ Debug
+!MESSAGE No configuration specified. Defaulting to nsprobe - @PLATFORM@ Debug.
+!ENDIF 
+
+!IF "$(CFG)" != "nsprobe - @PLATFORM@ Release" && "$(CFG)" != "nsprobe - @PLATFORM@ Debug"
+!MESSAGE Invalid configuration "$(CFG)" specified.
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "nsprobe.mak" CFG="nsprobe - @PLATFORM@ Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "nsprobe - @PLATFORM@ Release" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE "nsprobe - @PLATFORM@ Debug" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE 
+!ERROR An invalid configuration is specified.
+!ENDIF 
+
+!IF "$(OS)" == "Windows_NT"
+NULL=
+!ELSE 
+NULL=nul
+!ENDIF 
+
+!IF  "$(CFG)" == "nsprobe - @PLATFORM@ Release"
+_VC_MANIFEST_INC=0
+_VC_MANIFEST_BASENAME=__VC80
+!ELSE
+_VC_MANIFEST_INC=1
+_VC_MANIFEST_BASENAME=__VC80.Debug
+!ENDIF
+
+####################################################
+# Specifying name of temporary resource file used only in incremental builds:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+_VC_MANIFEST_AUTO_RES=$(_VC_MANIFEST_BASENAME).auto.res
+!else
+_VC_MANIFEST_AUTO_RES=
+!endif
+
+####################################################
+# _VC_MANIFEST_EMBED_EXE - command to embed manifest in EXE:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+#MT_SPECIAL_RETURN=1090650113
+#MT_SPECIAL_SWITCH=-notify_resource_update
+MT_SPECIAL_RETURN=0
+MT_SPECIAL_SWITCH=
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -out:$(_VC_MANIFEST_BASENAME).auto.manifest $(MT_SPECIAL_SWITCH) & \
+if "%ERRORLEVEL%" == "$(MT_SPECIAL_RETURN)" \
+rc /r $(_VC_MANIFEST_BASENAME).auto.rc & \
+link $** /out:$@ $(LFLAGS)
+
+!else
+
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -outputresource:$@;1
+
+!endif
+
+####################################################
+# _VC_MANIFEST_EMBED_DLL - command to embed manifest in DLL:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+#MT_SPECIAL_RETURN=1090650113
+#MT_SPECIAL_SWITCH=-notify_resource_update
+MT_SPECIAL_RETURN=0
+MT_SPECIAL_SWITCH=
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -out:$(_VC_MANIFEST_BASENAME).auto.manifest $(MT_SPECIAL_SWITCH) & \
+if "%ERRORLEVEL%" == "$(MT_SPECIAL_RETURN)" \
+rc /r $(_VC_MANIFEST_BASENAME).auto.rc & \
+link $** /out:$@ $(LFLAGS)
+
+!else
+
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -outputresource:$@;2
+
+!endif
+####################################################
+# _VC_MANIFEST_CLEAN - command to clean resources files generated temporarily:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+_VC_MANIFEST_CLEAN=-del $(_VC_MANIFEST_BASENAME).auto.res \
+    $(_VC_MANIFEST_BASENAME).auto.rc \
+    $(_VC_MANIFEST_BASENAME).auto.manifest
+
+!else
+
+_VC_MANIFEST_CLEAN=
+
+!endif
+
+!IF  "$(CFG)" == "nsprobe - @PLATFORM@ Release"
+
+OUTDIR=.\Release
+INTDIR=.\Release
+
+ALL : "..\..\..\Build\Release\nsprobe.exe"
+
+
+CLEAN :
+	-@erase "$(INTDIR)\nsprobe.obj"
+	-@erase "$(INTDIR)\vc60.idb"
+	-@erase "..\..\..\Build\Release\nsprobe.exe"
+	-@$(_VC_MANIFEST_CLEAN)
+
+"$(OUTDIR)" :
+    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
+
+CPP=cl.exe
+CPP_PROJ=/nologo /MD /W3 @COPTX@ @COPTI@ /O2 /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "NDEBUG" /D "__STDC__" /D "WIN32" /D "_CONSOLE" /D "_MBCS" /Fp"$(INTDIR)\nsprobe.pch" @COPTY@ /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /c 
+
+.c{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.c{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+RSC=rc.exe
+BSC32=bscmake.exe
+BSC32_FLAGS=/nologo /o"$(OUTDIR)\nsprobe.bsc" 
+BSC32_SBRS= \
+	
+LINK32=link.exe
+LINK32_FLAGS=user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Release/libisc.lib ../../dns/win32/Release/libdns.lib ../../isccfg/win32/Release/libisccfg.lib /nologo /subsystem:console /incremental:no /pdb:"$(OUTDIR)\nsprobe.pdb" @MACHINE@ /out:"../../../Build/Release/nsprobe.exe" 
+LINK32_OBJS= \
+	"$(INTDIR)\nsprobe.obj"
+
+"..\..\..\Build\Release\nsprobe.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS)
+    $(LINK32) @<<
+  $(LINK32_FLAGS) $(LINK32_OBJS)
+<<
+    $(_VC_MANIFEST_EMBED_EXE)
+
+!ELSEIF  "$(CFG)" == "nsprobe - @PLATFORM@ Debug"
+
+OUTDIR=.\Debug
+INTDIR=.\Debug
+# Begin Custom Macros
+OutDir=.\Debug
+# End Custom Macros
+
+ALL : "..\..\..\Build\Debug\nsprobe.exe" "$(OUTDIR)\nsprobe.bsc"
+
+
+CLEAN :
+	-@erase "$(INTDIR)\nsprobe.obj"
+	-@erase "$(INTDIR)\nsprobe.sbr"
+	-@erase "$(INTDIR)\vc60.idb"
+	-@erase "$(INTDIR)\vc60.pdb"
+	-@erase "$(OUTDIR)\nsprobe.pdb"
+	-@erase "$(OUTDIR)\nsprobe.bsc"
+	-@erase "..\..\..\Build\Debug\nsprobe.exe"
+	-@erase "..\..\..\Build\Debug\nsprobe.ilk"
+	-@$(_VC_MANIFEST_CLEAN)
+
+"$(OUTDIR)" :
+    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
+
+CPP=cl.exe
+CPP_PROJ=/nologo /MDd /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "_DEBUG" /D "WIN32" /D "__STDC__" /D "_CONSOLE" /D "_MBCS" /FR"$(INTDIR)\\" /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /GZ /c 
+
+.c{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.c{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+RSC=rc.exe
+BSC32=bscmake.exe
+BSC32_FLAGS=/nologo /o"$(OUTDIR)\nsprobe.bsc" 
+BSC32_SBRS= \
+	"$(INTDIR)\nsprobe.sbr"
+
+"$(OUTDIR)\nsprobe.bsc" : "$(OUTDIR)" $(BSC32_SBRS)
+    $(BSC32) @<<
+  $(BSC32_FLAGS) $(BSC32_SBRS)
+<<
+
+LINK32=link.exe
+LINK32_FLAGS=user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Debug/libisc.lib ../../dns/win32/Debug/libdns.lib ../../isccfg/win32/Debug/libisccfg.lib /nologo /subsystem:console /incremental:yes /pdb:"$(OUTDIR)\nsprobe.pdb" /debug @MACHINE@ /out:"../../../Build/Debug/nsprobe.exe" /pdbtype:sept 
+LINK32_OBJS= \
+	"$(INTDIR)\nsprobe.obj"
+
+"..\..\..\Build\Debug\nsprobe.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS)
+    $(LINK32) @<<
+  $(LINK32_FLAGS) $(LINK32_OBJS)
+<<
+    $(_VC_MANIFEST_EMBED_EXE)
+
+!ENDIF 
+
+
+!IF "$(NO_EXTERNAL_DEPS)" != "1"
+!IF EXISTS("nsprobe.dep")
+!INCLUDE "nsprobe.dep"
+!ELSE 
+!MESSAGE Warning: cannot find "nsprobe.dep"
+!ENDIF 
+!ENDIF 
+
+
+!IF "$(CFG)" == "nsprobe - @PLATFORM@ Release" || "$(CFG)" == "nsprobe - @PLATFORM@ Debug"
+SOURCE="..\nsprobe.c"
+
+!IF  "$(CFG)" == "nsprobe - @PLATFORM@ Release"
+
+
+"$(INTDIR)\nsprobe.obj" : $(SOURCE) "$(INTDIR)"
+	$(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+!ELSEIF  "$(CFG)" == "nsprobe - @PLATFORM@ Debug"
+
+
+"$(INTDIR)\nsprobe.obj"	"$(INTDIR)\nsprobe.sbr" : $(SOURCE) "$(INTDIR)"
+	$(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+!ENDIF 
+
+!ENDIF 
+
+####################################################
+# Commands to generate initial empty manifest file and the RC file
+# that references it, and for generating the .res file:
+
+$(_VC_MANIFEST_BASENAME).auto.res : $(_VC_MANIFEST_BASENAME).auto.rc
+
+$(_VC_MANIFEST_BASENAME).auto.rc : $(_VC_MANIFEST_BASENAME).auto.manifest
+    type <<$@
+#include <winuser.h>
+1RT_MANIFEST"$(_VC_MANIFEST_BASENAME).auto.manifest"
+<< KEEP
+
+$(_VC_MANIFEST_BASENAME).auto.manifest :
+    type <<$@
+<?xml version='1.0' encoding='UTF-8' standalone='yes'?>
+<assembly xmlns='urn:schemas-microsoft-com:asm.v1' manifestVersion='1.0'>
+</assembly>
+<< KEEP
diff --git a/lib/samples/win32/nsprobe.vcxproj.filters.in b/lib/samples/win32/nsprobe.vcxproj.filters.in
new file mode 100644
index 0000000..d7e313b
--- /dev/null
+++ b/lib/samples/win32/nsprobe.vcxproj.filters.in
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\nsprobe.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/lib/samples/win32/nsprobe.vcxproj.in b/lib/samples/win32/nsprobe.vcxproj.in
new file mode 100644
index 0000000..96c8a18
--- /dev/null
+++ b/lib/samples/win32/nsprobe.vcxproj.in
@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|@PLATFORM@">
+      <Configuration>Debug</Configuration>
+      <Platform>@PLATFORM@</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|@PLATFORM@">
+      <Configuration>Release</Configuration>
+      <Platform>@PLATFORM@</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{CB2A29F6-E73B-40AB-8AC4-2C1AAE7280BD}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>nsprobe</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <LinkIncremental>true</LinkIncremental>
+    <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+    <IntDir>.\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <LinkIncremental>false</LinkIncremental>
+    <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+    <IntDir>.\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <PrecompiledHeaderOutputFile>.\$(Configuration)\$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\$(Configuration)\</AssemblerListingLocation>
+      <ObjectFileName>.\$(Configuration)\</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <BrowseInformation>true</BrowseInformation>
+      <AdditionalIncludeDirectories>..\..\..\;@LIBXML2_INC@@OPENSSL_INC@..\..\isc\win32;..\..\isc\win32\include;..\..\isc\include;..\..\dns\win32\include;..\..\dns\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <CompileAs>CompileAsC</CompileAs>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <OutputFile>..\..\..\Build\$(Configuration)\$(TargetName)$(TargetExt)</OutputFile>
+      <AdditionalLibraryDirectories>..\..\isc\win32\$(Configuration);..\..\dns\win32\$(Configuration);..\..\isccfg\win32\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libisc.lib;libdns.lib;libisccfg.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>@INTRINSIC@</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
+      <WholeProgramOptimization>false</WholeProgramOptimization>
+      <StringPooling>true</StringPooling>
+      <PrecompiledHeaderOutputFile>.\$(Configuration)\$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\$(Configuration)\</AssemblerListingLocation>
+      <ObjectFileName>.\$(Configuration)\</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <AdditionalIncludeDirectories>..\..\..\;@LIBXML2_INC@@OPENSSL_INC@..\..\isc\win32;..\..\isc\win32\include;..\..\isc\include;..\..\dns\win32\include;..\..\dns\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <CompileAs>CompileAsC</CompileAs>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <OutputFile>..\..\..\Build\$(Configuration)\$(TargetName)$(TargetExt)</OutputFile>
+      <LinkTimeCodeGeneration>Default</LinkTimeCodeGeneration>
+      <AdditionalLibraryDirectories>..\..\isc\win32\$(Configuration);..\..\dns\win32\$(Configuration);..\..\isccfg\win32\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libisc.lib;libdns.lib;libisccfg.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\nsprobe.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
diff --git a/lib/samples/win32/nsprobe.vcxproj.user b/lib/samples/win32/nsprobe.vcxproj.user
new file mode 100644
index 0000000..695b5c7
--- /dev/null
+++ b/lib/samples/win32/nsprobe.vcxproj.user
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+</Project>
\ No newline at end of file
diff --git a/lib/samples/win32/request.dsp.in b/lib/samples/win32/request.dsp.in
new file mode 100644
index 0000000..dbdfe83
--- /dev/null
+++ b/lib/samples/win32/request.dsp.in
@@ -0,0 +1,103 @@
+# Microsoft Developer Studio Project File - Name="request" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "@PLATFORM@ (x86) Console Application" 0x0103
+
+CFG=request - @PLATFORM@ Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE 
+!MESSAGE NMAKE /f "request.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "request.mak" CFG="request - @PLATFORM@ Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "request - @PLATFORM@ Release" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE "request - @PLATFORM@ Debug" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "request - @PLATFORM@ Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Release"
+# PROP Intermediate_Dir "Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 @COPTX@ @COPTI@ /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /c
+# ADD CPP /nologo /MD /W3 @COPTX@ @COPTI@ /O2 /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "NDEBUG" /D "__STDC__" /D "WIN32" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console @MACHINE@
+# ADD LINK32 user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Release/libisc.lib ../../dns/win32/Release/libdns.lib ../../isccfg/win32/Release/libisccfg.lib /nologo /subsystem:console @MACHINE@ /out:"../../../Build/Release/sample-request.exe"
+
+!ELSEIF  "$(CFG)" == "request - @PLATFORM@ Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Debug"
+# PROP Intermediate_Dir "Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "_DEBUG" /D "WIN32" /D "__STDC__" /D "_CONSOLE" /D "_MBCS" /FR /FD /GZ /c
+# SUBTRACT CPP /X @COPTY@
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug @MACHINE@ /pdbtype:sept
+# ADD LINK32 user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Debug/libisc.lib ../../dns/win32/Debug/libdns.lib ../../isccfg/win32/Debug/libisccfg.lib /nologo /subsystem:console /debug @MACHINE@ /out:"../../../Build/Debug/sample-request.exe" /pdbtype:sept
+
+!ENDIF 
+
+# Begin Target
+
+# Name "request - @PLATFORM@ Release"
+# Name "request - @PLATFORM@ Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE="..\sample-request.c"
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# End Group
+# Begin Group "Resource Files"
+
+# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+# End Group
+# End Target
+# End Project
diff --git a/lib/samples/win32/request.dsw b/lib/samples/win32/request.dsw
new file mode 100644
index 0000000..322cc90
--- /dev/null
+++ b/lib/samples/win32/request.dsw
@@ -0,0 +1,29 @@
+Microsoft Developer Studio Workspace File, Format Version 6.00

+# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!

+

+###############################################################################

+

+Project: "request"=".\request.dsp" - Package Owner=<4>

+

+Package=<5>

+{{{

+}}}

+

+Package=<4>

+{{{

+}}}

+

+###############################################################################

+

+Global:

+

+Package=<5>

+{{{

+}}}

+

+Package=<3>

+{{{

+}}}

+

+###############################################################################

+

diff --git a/lib/samples/win32/request.mak.in b/lib/samples/win32/request.mak.in
new file mode 100644
index 0000000..b9681c6
--- /dev/null
+++ b/lib/samples/win32/request.mak.in
@@ -0,0 +1,299 @@
+# Microsoft Developer Studio Generated NMAKE File, Based on request.dsp
+!IF "$(CFG)" == ""
+CFG=request - @PLATFORM@ Debug
+!MESSAGE No configuration specified. Defaulting to request - @PLATFORM@ Debug.
+!ENDIF 
+
+!IF "$(CFG)" != "request - @PLATFORM@ Release" && "$(CFG)" != "request - @PLATFORM@ Debug"
+!MESSAGE Invalid configuration "$(CFG)" specified.
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "request.mak" CFG="request - @PLATFORM@ Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "request - @PLATFORM@ Release" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE "request - @PLATFORM@ Debug" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE 
+!ERROR An invalid configuration is specified.
+!ENDIF 
+
+!IF "$(OS)" == "Windows_NT"
+NULL=
+!ELSE 
+NULL=nul
+!ENDIF 
+
+!IF  "$(CFG)" == "request - @PLATFORM@ Release"
+_VC_MANIFEST_INC=0
+_VC_MANIFEST_BASENAME=__VC80
+!ELSE
+_VC_MANIFEST_INC=1
+_VC_MANIFEST_BASENAME=__VC80.Debug
+!ENDIF
+
+####################################################
+# Specifying name of temporary resource file used only in incremental builds:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+_VC_MANIFEST_AUTO_RES=$(_VC_MANIFEST_BASENAME).auto.res
+!else
+_VC_MANIFEST_AUTO_RES=
+!endif
+
+####################################################
+# _VC_MANIFEST_EMBED_EXE - command to embed manifest in EXE:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+#MT_SPECIAL_RETURN=1090650113
+#MT_SPECIAL_SWITCH=-notify_resource_update
+MT_SPECIAL_RETURN=0
+MT_SPECIAL_SWITCH=
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -out:$(_VC_MANIFEST_BASENAME).auto.manifest $(MT_SPECIAL_SWITCH) & \
+if "%ERRORLEVEL%" == "$(MT_SPECIAL_RETURN)" \
+rc /r $(_VC_MANIFEST_BASENAME).auto.rc & \
+link $** /out:$@ $(LFLAGS)
+
+!else
+
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -outputresource:$@;1
+
+!endif
+
+####################################################
+# _VC_MANIFEST_EMBED_DLL - command to embed manifest in DLL:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+#MT_SPECIAL_RETURN=1090650113
+#MT_SPECIAL_SWITCH=-notify_resource_update
+MT_SPECIAL_RETURN=0
+MT_SPECIAL_SWITCH=
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -out:$(_VC_MANIFEST_BASENAME).auto.manifest $(MT_SPECIAL_SWITCH) & \
+if "%ERRORLEVEL%" == "$(MT_SPECIAL_RETURN)" \
+rc /r $(_VC_MANIFEST_BASENAME).auto.rc & \
+link $** /out:$@ $(LFLAGS)
+
+!else
+
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -outputresource:$@;2
+
+!endif
+####################################################
+# _VC_MANIFEST_CLEAN - command to clean resources files generated temporarily:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+_VC_MANIFEST_CLEAN=-del $(_VC_MANIFEST_BASENAME).auto.res \
+    $(_VC_MANIFEST_BASENAME).auto.rc \
+    $(_VC_MANIFEST_BASENAME).auto.manifest
+
+!else
+
+_VC_MANIFEST_CLEAN=
+
+!endif
+
+!IF  "$(CFG)" == "request - @PLATFORM@ Release"
+
+OUTDIR=.\Release
+INTDIR=.\Release
+
+ALL : "..\..\..\Build\Release\sample-request.exe"
+
+
+CLEAN :
+	-@erase "$(INTDIR)\sample-request.obj"
+	-@erase "$(INTDIR)\vc60.idb"
+	-@erase "..\..\..\Build\Release\sample-request.exe"
+	-@$(_VC_MANIFEST_CLEAN)
+
+"$(OUTDIR)" :
+    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
+
+CPP=cl.exe
+CPP_PROJ=/nologo /MD /W3 @COPTX@ @COPTI@ /O2 /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "NDEBUG" /D "__STDC__" /D "WIN32" /D "_CONSOLE" /D "_MBCS" /Fp"$(INTDIR)\sample-request.pch" @COPTY@ /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /c 
+
+.c{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.c{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+RSC=rc.exe
+BSC32=bscmake.exe
+BSC32_FLAGS=/nologo /o"$(OUTDIR)\sample-request.bsc" 
+BSC32_SBRS= \
+	
+LINK32=link.exe
+LINK32_FLAGS=user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Release/libisc.lib ../../dns/win32/Release/libdns.lib ../../isccfg/win32/Release/libisccfg.lib /nologo /subsystem:console /incremental:no /pdb:"$(OUTDIR)\sample-request.pdb" @MACHINE@ /out:"../../../Build/Release/sample-request.exe" 
+LINK32_OBJS= \
+	"$(INTDIR)\sample-request.obj"
+
+"..\..\..\Build\Release\sample-request.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS)
+    $(LINK32) @<<
+  $(LINK32_FLAGS) $(LINK32_OBJS)
+<<
+    $(_VC_MANIFEST_EMBED_EXE)
+
+!ELSEIF  "$(CFG)" == "request - @PLATFORM@ Debug"
+
+OUTDIR=.\Debug
+INTDIR=.\Debug
+# Begin Custom Macros
+OutDir=.\Debug
+# End Custom Macros
+
+ALL : "..\..\..\Build\Debug\sample-request.exe" "$(OUTDIR)\sample-request.bsc"
+
+
+CLEAN :
+	-@erase "$(INTDIR)\sample-request.obj"
+	-@erase "$(INTDIR)\sample-request.sbr"
+	-@erase "$(INTDIR)\vc60.idb"
+	-@erase "$(INTDIR)\vc60.pdb"
+	-@erase "$(OUTDIR)\sample-request.pdb"
+	-@erase "$(OUTDIR)\sample-request.bsc"
+	-@erase "..\..\..\Build\Debug\sample-request.exe"
+	-@erase "..\..\..\Build\Debug\sample-request.ilk"
+	-@$(_VC_MANIFEST_CLEAN)
+
+"$(OUTDIR)" :
+    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
+
+CPP=cl.exe
+CPP_PROJ=/nologo /MDd /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "_DEBUG" /D "WIN32" /D "__STDC__" /D "_CONSOLE" /D "_MBCS" /FR"$(INTDIR)\\" /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /GZ /c 
+
+.c{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.c{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+RSC=rc.exe
+BSC32=bscmake.exe
+BSC32_FLAGS=/nologo /o"$(OUTDIR)\sample-request.bsc" 
+BSC32_SBRS= \
+	"$(INTDIR)\sample-request.sbr"
+
+"$(OUTDIR)\sample-request.bsc" : "$(OUTDIR)" $(BSC32_SBRS)
+    $(BSC32) @<<
+  $(BSC32_FLAGS) $(BSC32_SBRS)
+<<
+
+LINK32=link.exe
+LINK32_FLAGS=user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Debug/libisc.lib ../../dns/win32/Debug/libdns.lib ../../isccfg/win32/Debug/libisccfg.lib /nologo /subsystem:console /incremental:yes /pdb:"$(OUTDIR)\sample-request.pdb" /debug @MACHINE@ /out:"../../../Build/Debug/sample-request.exe" /pdbtype:sept 
+LINK32_OBJS= \
+	"$(INTDIR)\sample-request.obj"
+
+"..\..\..\Build\Debug\sample-request.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS)
+    $(LINK32) @<<
+  $(LINK32_FLAGS) $(LINK32_OBJS)
+<<
+    $(_VC_MANIFEST_EMBED_EXE)
+
+!ENDIF 
+
+
+!IF "$(NO_EXTERNAL_DEPS)" != "1"
+!IF EXISTS("sample-request.dep")
+!INCLUDE "sample-request.dep"
+!ELSE 
+!MESSAGE Warning: cannot find "sample-request.dep"
+!ENDIF 
+!ENDIF 
+
+
+!IF "$(CFG)" == "request - @PLATFORM@ Release" || "$(CFG)" == "request - @PLATFORM@ Debug"
+SOURCE="..\sample-request.c"
+
+!IF  "$(CFG)" == "request - @PLATFORM@ Release"
+
+
+"$(INTDIR)\sample-request.obj" : $(SOURCE) "$(INTDIR)"
+	$(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+!ELSEIF  "$(CFG)" == "request - @PLATFORM@ Debug"
+
+
+"$(INTDIR)\sample-request.obj"	"$(INTDIR)\sample-request.sbr" : $(SOURCE) "$(INTDIR)"
+	$(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+!ENDIF 
+
+!ENDIF 
+
+####################################################
+# Commands to generate initial empty manifest file and the RC file
+# that references it, and for generating the .res file:
+
+$(_VC_MANIFEST_BASENAME).auto.res : $(_VC_MANIFEST_BASENAME).auto.rc
+
+$(_VC_MANIFEST_BASENAME).auto.rc : $(_VC_MANIFEST_BASENAME).auto.manifest
+    type <<$@
+#include <winuser.h>
+1RT_MANIFEST"$(_VC_MANIFEST_BASENAME).auto.manifest"
+<< KEEP
+
+$(_VC_MANIFEST_BASENAME).auto.manifest :
+    type <<$@
+<?xml version='1.0' encoding='UTF-8' standalone='yes'?>
+<assembly xmlns='urn:schemas-microsoft-com:asm.v1' manifestVersion='1.0'>
+</assembly>
+<< KEEP
diff --git a/lib/samples/win32/request.vcxproj.filters.in b/lib/samples/win32/request.vcxproj.filters.in
new file mode 100644
index 0000000..9edd41d
--- /dev/null
+++ b/lib/samples/win32/request.vcxproj.filters.in
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\sample-request.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/lib/samples/win32/request.vcxproj.in b/lib/samples/win32/request.vcxproj.in
new file mode 100644
index 0000000..3b204f2
--- /dev/null
+++ b/lib/samples/win32/request.vcxproj.in
@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|@PLATFORM@">
+      <Configuration>Debug</Configuration>
+      <Platform>@PLATFORM@</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|@PLATFORM@">
+      <Configuration>Release</Configuration>
+      <Platform>@PLATFORM@</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{FF440E85-7450-439C-82EE-04C464512D0E}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>request</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <LinkIncremental>true</LinkIncremental>
+    <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+    <IntDir>.\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <LinkIncremental>false</LinkIncremental>
+    <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+    <IntDir>.\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <PrecompiledHeaderOutputFile>.\$(Configuration)\$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\$(Configuration)\</AssemblerListingLocation>
+      <ObjectFileName>.\$(Configuration)\</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <BrowseInformation>true</BrowseInformation>
+      <AdditionalIncludeDirectories>..\..\..\;@LIBXML2_INC@@OPENSSL_INC@..\..\isc\win32;..\..\isc\win32\include;..\..\isc\include;..\..\dns\win32\include;..\..\dns\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <CompileAs>CompileAsC</CompileAs>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <OutputFile>..\..\..\Build\$(Configuration)\$(TargetName)$(TargetExt)</OutputFile>
+      <AdditionalLibraryDirectories>..\..\isc\win32\$(Configuration);..\..\dns\win32\$(Configuration);..\..\isccfg\win32\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libisc.lib;libdns.lib;libisccfg.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>@INTRINSIC@</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
+      <WholeProgramOptimization>false</WholeProgramOptimization>
+      <StringPooling>true</StringPooling>
+      <PrecompiledHeaderOutputFile>.\$(Configuration)\$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\$(Configuration)\</AssemblerListingLocation>
+      <ObjectFileName>.\$(Configuration)\</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <AdditionalIncludeDirectories>..\..\..\;@LIBXML2_INC@@OPENSSL_INC@..\..\isc\win32;..\..\isc\win32\include;..\..\isc\include;..\..\dns\win32\include;..\..\dns\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <CompileAs>CompileAsC</CompileAs>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <OutputFile>..\..\..\Build\$(Configuration)\$(TargetName)$(TargetExt)</OutputFile>
+      <LinkTimeCodeGeneration>Default</LinkTimeCodeGeneration>
+      <AdditionalLibraryDirectories>..\..\isc\win32\$(Configuration);..\..\dns\win32\$(Configuration);..\..\isccfg\win32\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libisc.lib;libdns.lib;libisccfg.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\sample-request.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
diff --git a/lib/samples/win32/request.vcxproj.user b/lib/samples/win32/request.vcxproj.user
new file mode 100644
index 0000000..695b5c7
--- /dev/null
+++ b/lib/samples/win32/request.vcxproj.user
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+</Project>
\ No newline at end of file
diff --git a/lib/samples/win32/resolve.dsp.in b/lib/samples/win32/resolve.dsp.in
new file mode 100644
index 0000000..e73835d
--- /dev/null
+++ b/lib/samples/win32/resolve.dsp.in
@@ -0,0 +1,103 @@
+# Microsoft Developer Studio Project File - Name="resolve" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "@PLATFORM@ (x86) Console Application" 0x0103
+
+CFG=resolve - @PLATFORM@ Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE 
+!MESSAGE NMAKE /f "resolve.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "resolve.mak" CFG="resolve - @PLATFORM@ Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "resolve - @PLATFORM@ Release" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE "resolve - @PLATFORM@ Debug" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "resolve - @PLATFORM@ Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Release"
+# PROP Intermediate_Dir "Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 @COPTX@ @COPTI@ /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /c
+# ADD CPP /nologo /MD /W3 @COPTX@ @COPTI@ /O2 /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /I "../../irs/win32/include" /I "../../irs/include" /D "NDEBUG" /D "__STDC__" /D "WIN32" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console @MACHINE@
+# ADD LINK32 user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Release/libisc.lib ../../dns/win32/Release/libdns.lib ../../isccfg/win32/Release/libisccfg.lib ../../irs/win32/Release/libirs.lib /nologo /subsystem:console @MACHINE@ /out:"../../../Build/Release/resolve.exe"
+
+!ELSEIF  "$(CFG)" == "resolve - @PLATFORM@ Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Debug"
+# PROP Intermediate_Dir "Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /I "../../irs/win32/include" /I "../../irs/include" /D "_DEBUG" /D "WIN32" /D "__STDC__" /D "_CONSOLE" /D "_MBCS" /FR /FD /GZ /c
+# SUBTRACT CPP /X @COPTY@
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug @MACHINE@ /pdbtype:sept
+# ADD LINK32 user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Debug/libisc.lib ../../dns/win32/Debug/libdns.lib ../../isccfg/win32/Debug/libisccfg.lib ../../irs/win32/Debug/libirs.lib /nologo /subsystem:console /debug @MACHINE@ /out:"../../../Build/Debug/resolve.exe" /pdbtype:sept
+
+!ENDIF 
+
+# Begin Target
+
+# Name "resolve - @PLATFORM@ Release"
+# Name "resolve - @PLATFORM@ Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE="..\resolve.c"
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# End Group
+# Begin Group "Resource Files"
+
+# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+# End Group
+# End Target
+# End Project
diff --git a/lib/samples/win32/resolve.dsw b/lib/samples/win32/resolve.dsw
new file mode 100644
index 0000000..32fb539
--- /dev/null
+++ b/lib/samples/win32/resolve.dsw
@@ -0,0 +1,29 @@
+Microsoft Developer Studio Workspace File, Format Version 6.00

+# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!

+

+###############################################################################

+

+Project: "resolve"=".\resolve.dsp" - Package Owner=<4>

+

+Package=<5>

+{{{

+}}}

+

+Package=<4>

+{{{

+}}}

+

+###############################################################################

+

+Global:

+

+Package=<5>

+{{{

+}}}

+

+Package=<3>

+{{{

+}}}

+

+###############################################################################

+

diff --git a/lib/samples/win32/resolve.mak.in b/lib/samples/win32/resolve.mak.in
new file mode 100644
index 0000000..ae461d1
--- /dev/null
+++ b/lib/samples/win32/resolve.mak.in
@@ -0,0 +1,299 @@
+# Microsoft Developer Studio Generated NMAKE File, Based on resolve.dsp
+!IF "$(CFG)" == ""
+CFG=resolve - @PLATFORM@ Debug
+!MESSAGE No configuration specified. Defaulting to resolve - @PLATFORM@ Debug.
+!ENDIF 
+
+!IF "$(CFG)" != "resolve - @PLATFORM@ Release" && "$(CFG)" != "resolve - @PLATFORM@ Debug"
+!MESSAGE Invalid configuration "$(CFG)" specified.
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "resolve.mak" CFG="resolve - @PLATFORM@ Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "resolve - @PLATFORM@ Release" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE "resolve - @PLATFORM@ Debug" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE 
+!ERROR An invalid configuration is specified.
+!ENDIF 
+
+!IF "$(OS)" == "Windows_NT"
+NULL=
+!ELSE 
+NULL=nul
+!ENDIF 
+
+!IF  "$(CFG)" == "resolve - @PLATFORM@ Release"
+_VC_MANIFEST_INC=0
+_VC_MANIFEST_BASENAME=__VC80
+!ELSE
+_VC_MANIFEST_INC=1
+_VC_MANIFEST_BASENAME=__VC80.Debug
+!ENDIF
+
+####################################################
+# Specifying name of temporary resource file used only in incremental builds:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+_VC_MANIFEST_AUTO_RES=$(_VC_MANIFEST_BASENAME).auto.res
+!else
+_VC_MANIFEST_AUTO_RES=
+!endif
+
+####################################################
+# _VC_MANIFEST_EMBED_EXE - command to embed manifest in EXE:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+#MT_SPECIAL_RETURN=1090650113
+#MT_SPECIAL_SWITCH=-notify_resource_update
+MT_SPECIAL_RETURN=0
+MT_SPECIAL_SWITCH=
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -out:$(_VC_MANIFEST_BASENAME).auto.manifest $(MT_SPECIAL_SWITCH) & \
+if "%ERRORLEVEL%" == "$(MT_SPECIAL_RETURN)" \
+rc /r $(_VC_MANIFEST_BASENAME).auto.rc & \
+link $** /out:$@ $(LFLAGS)
+
+!else
+
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -outputresource:$@;1
+
+!endif
+
+####################################################
+# _VC_MANIFEST_EMBED_DLL - command to embed manifest in DLL:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+#MT_SPECIAL_RETURN=1090650113
+#MT_SPECIAL_SWITCH=-notify_resource_update
+MT_SPECIAL_RETURN=0
+MT_SPECIAL_SWITCH=
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -out:$(_VC_MANIFEST_BASENAME).auto.manifest $(MT_SPECIAL_SWITCH) & \
+if "%ERRORLEVEL%" == "$(MT_SPECIAL_RETURN)" \
+rc /r $(_VC_MANIFEST_BASENAME).auto.rc & \
+link $** /out:$@ $(LFLAGS)
+
+!else
+
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -outputresource:$@;2
+
+!endif
+####################################################
+# _VC_MANIFEST_CLEAN - command to clean resources files generated temporarily:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+_VC_MANIFEST_CLEAN=-del $(_VC_MANIFEST_BASENAME).auto.res \
+    $(_VC_MANIFEST_BASENAME).auto.rc \
+    $(_VC_MANIFEST_BASENAME).auto.manifest
+
+!else
+
+_VC_MANIFEST_CLEAN=
+
+!endif
+
+!IF  "$(CFG)" == "resolve - @PLATFORM@ Release"
+
+OUTDIR=.\Release
+INTDIR=.\Release
+
+ALL : "..\..\..\Build\Release\resolve.exe"
+
+
+CLEAN :
+	-@erase "$(INTDIR)\resolve.obj"
+	-@erase "$(INTDIR)\vc60.idb"
+	-@erase "..\..\..\Build\Release\resolve.exe"
+	-@$(_VC_MANIFEST_CLEAN)
+
+"$(OUTDIR)" :
+    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
+
+CPP=cl.exe
+CPP_PROJ=/nologo /MD /W3 @COPTX@ @COPTI@ /O2 /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /I "../../irs/win32/include" /I "../../irs/include" /D "NDEBUG" /D "__STDC__" /D "WIN32" /D "_CONSOLE" /D "_MBCS" /Fp"$(INTDIR)\resolve.pch" @COPTY@ /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /c 
+
+.c{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.c{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+RSC=rc.exe
+BSC32=bscmake.exe
+BSC32_FLAGS=/nologo /o"$(OUTDIR)\resolve.bsc" 
+BSC32_SBRS= \
+	
+LINK32=link.exe
+LINK32_FLAGS=user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Release/libisc.lib ../../dns/win32/Release/libdns.lib ../../isccfg/win32/Release/libisccfg.lib ../../irs/win32/Release/libirs.lib /nologo /subsystem:console /incremental:no /pdb:"$(OUTDIR)\resolve.pdb" @MACHINE@ /out:"../../../Build/Release/resolve.exe" 
+LINK32_OBJS= \
+	"$(INTDIR)\resolve.obj"
+
+"..\..\..\Build\Release\resolve.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS)
+    $(LINK32) @<<
+  $(LINK32_FLAGS) $(LINK32_OBJS)
+<<
+    $(_VC_MANIFEST_EMBED_EXE)
+
+!ELSEIF  "$(CFG)" == "resolve - @PLATFORM@ Debug"
+
+OUTDIR=.\Debug
+INTDIR=.\Debug
+# Begin Custom Macros
+OutDir=.\Debug
+# End Custom Macros
+
+ALL : "..\..\..\Build\Debug\resolve.exe" "$(OUTDIR)\resolve.bsc"
+
+
+CLEAN :
+	-@erase "$(INTDIR)\resolve.obj"
+	-@erase "$(INTDIR)\resolve.sbr"
+	-@erase "$(INTDIR)\vc60.idb"
+	-@erase "$(INTDIR)\vc60.pdb"
+	-@erase "$(OUTDIR)\resolve.pdb"
+	-@erase "$(OUTDIR)\resolve.bsc"
+	-@erase "..\..\..\Build\Debug\resolve.exe"
+	-@erase "..\..\..\Build\Debug\resolve.ilk"
+	-@$(_VC_MANIFEST_CLEAN)
+
+"$(OUTDIR)" :
+    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
+
+CPP=cl.exe
+CPP_PROJ=/nologo /MDd /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /I "../../irs/win32/include" /I "../../irs/include" /D "_DEBUG" /D "WIN32" /D "__STDC__" /D "_CONSOLE" /D "_MBCS" /FR"$(INTDIR)\\" /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /GZ /c 
+
+.c{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.c{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+RSC=rc.exe
+BSC32=bscmake.exe
+BSC32_FLAGS=/nologo /o"$(OUTDIR)\resolve.bsc" 
+BSC32_SBRS= \
+	"$(INTDIR)\resolve.sbr"
+
+"$(OUTDIR)\resolve.bsc" : "$(OUTDIR)" $(BSC32_SBRS)
+    $(BSC32) @<<
+  $(BSC32_FLAGS) $(BSC32_SBRS)
+<<
+
+LINK32=link.exe
+LINK32_FLAGS=user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Debug/libisc.lib ../../dns/win32/Debug/libdns.lib ../../isccfg/win32/Debug/libisccfg.lib ../../irs/win32/Debug/libirs.lib /nologo /subsystem:console /incremental:yes /pdb:"$(OUTDIR)\resolve.pdb" /debug @MACHINE@ /out:"../../../Build/Debug/resolve.exe" /pdbtype:sept 
+LINK32_OBJS= \
+	"$(INTDIR)\resolve.obj"
+
+"..\..\..\Build\Debug\resolve.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS)
+    $(LINK32) @<<
+  $(LINK32_FLAGS) $(LINK32_OBJS)
+<<
+    $(_VC_MANIFEST_EMBED_EXE)
+
+!ENDIF 
+
+
+!IF "$(NO_EXTERNAL_DEPS)" != "1"
+!IF EXISTS("resolve.dep")
+!INCLUDE "resolve.dep"
+!ELSE 
+!MESSAGE Warning: cannot find "resolve.dep"
+!ENDIF 
+!ENDIF 
+
+
+!IF "$(CFG)" == "resolve - @PLATFORM@ Release" || "$(CFG)" == "resolve - @PLATFORM@ Debug"
+SOURCE="..\resolve.c"
+
+!IF  "$(CFG)" == "resolve - @PLATFORM@ Release"
+
+
+"$(INTDIR)\resolve.obj" : $(SOURCE) "$(INTDIR)"
+	$(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+!ELSEIF  "$(CFG)" == "resolve - @PLATFORM@ Debug"
+
+
+"$(INTDIR)\resolve.obj"	"$(INTDIR)\resolve.sbr" : $(SOURCE) "$(INTDIR)"
+	$(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+!ENDIF 
+
+!ENDIF 
+
+####################################################
+# Commands to generate initial empty manifest file and the RC file
+# that references it, and for generating the .res file:
+
+$(_VC_MANIFEST_BASENAME).auto.res : $(_VC_MANIFEST_BASENAME).auto.rc
+
+$(_VC_MANIFEST_BASENAME).auto.rc : $(_VC_MANIFEST_BASENAME).auto.manifest
+    type <<$@
+#include <winuser.h>
+1RT_MANIFEST"$(_VC_MANIFEST_BASENAME).auto.manifest"
+<< KEEP
+
+$(_VC_MANIFEST_BASENAME).auto.manifest :
+    type <<$@
+<?xml version='1.0' encoding='UTF-8' standalone='yes'?>
+<assembly xmlns='urn:schemas-microsoft-com:asm.v1' manifestVersion='1.0'>
+</assembly>
+<< KEEP
diff --git a/lib/samples/win32/resolve.vcxproj.filters.in b/lib/samples/win32/resolve.vcxproj.filters.in
new file mode 100644
index 0000000..882e23f
--- /dev/null
+++ b/lib/samples/win32/resolve.vcxproj.filters.in
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\resolve.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/lib/samples/win32/resolve.vcxproj.in b/lib/samples/win32/resolve.vcxproj.in
new file mode 100644
index 0000000..189a39a
--- /dev/null
+++ b/lib/samples/win32/resolve.vcxproj.in
@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|@PLATFORM@">
+      <Configuration>Debug</Configuration>
+      <Platform>@PLATFORM@</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|@PLATFORM@">
+      <Configuration>Release</Configuration>
+      <Platform>@PLATFORM@</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{F66D8B7E-721D-4602-99AD-820D19AD1313}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>resolve</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <LinkIncremental>true</LinkIncremental>
+    <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+    <IntDir>.\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <LinkIncremental>false</LinkIncremental>
+    <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+    <IntDir>.\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <PrecompiledHeaderOutputFile>.\$(Configuration)\$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\$(Configuration)\</AssemblerListingLocation>
+      <ObjectFileName>.\$(Configuration)\</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <BrowseInformation>true</BrowseInformation>
+      <AdditionalIncludeDirectories>..\..\..\;@LIBXML2_INC@@OPENSSL_INC@..\..\isc\win32;..\..\isc\win32\include;..\..\isc\include;..\..\dns\win32\include;..\..\dns\include;..\..\irs\win32\include;..\..\irs\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <CompileAs>CompileAsC</CompileAs>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <OutputFile>..\..\..\Build\$(Configuration)\$(TargetName)$(TargetExt)</OutputFile>
+      <AdditionalLibraryDirectories>..\..\isc\win32\$(Configuration);..\..\dns\win32\$(Configuration);..\..\isccfg\win32\$(Configuration);..\..\irs\win32\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libisc.lib;libdns.lib;libisccfg.lib;libirs.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>@INTRINSIC@</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
+      <WholeProgramOptimization>false</WholeProgramOptimization>
+      <StringPooling>true</StringPooling>
+      <PrecompiledHeaderOutputFile>.\$(Configuration)\$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\$(Configuration)\</AssemblerListingLocation>
+      <ObjectFileName>.\$(Configuration)\</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <AdditionalIncludeDirectories>..\..\..\;@LIBXML2_INC@@OPENSSL_INC@..\..\isc\win32;..\..\isc\win32\include;..\..\isc\include;..\..\dns\win32\include;..\..\dns\include;..\..\irs\win32\include;..\..\irs\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <CompileAs>CompileAsC</CompileAs>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <OutputFile>..\..\..\Build\$(Configuration)\$(TargetName)$(TargetExt)</OutputFile>
+      <LinkTimeCodeGeneration>Default</LinkTimeCodeGeneration>
+      <AdditionalLibraryDirectories>..\..\isc\win32\$(Configuration);..\..\dns\win32\$(Configuration);..\..\isccfg\win32\$(Configuration);..\..\irs\win32\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libisc.lib;libdns.lib;libisccfg.lib;libirs.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\resolve.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
diff --git a/lib/samples/win32/resolve.vcxproj.user b/lib/samples/win32/resolve.vcxproj.user
new file mode 100644
index 0000000..695b5c7
--- /dev/null
+++ b/lib/samples/win32/resolve.vcxproj.user
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+</Project>
\ No newline at end of file
diff --git a/lib/samples/win32/update.dsp.in b/lib/samples/win32/update.dsp.in
new file mode 100644
index 0000000..37be0a9
--- /dev/null
+++ b/lib/samples/win32/update.dsp.in
@@ -0,0 +1,103 @@
+# Microsoft Developer Studio Project File - Name="update" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "@PLATFORM@ (x86) Console Application" 0x0103
+
+CFG=update - @PLATFORM@ Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE 
+!MESSAGE NMAKE /f "update.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "update.mak" CFG="update - @PLATFORM@ Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "update - @PLATFORM@ Release" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE "update - @PLATFORM@ Debug" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "update - @PLATFORM@ Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Release"
+# PROP Intermediate_Dir "Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 @COPTX@ @COPTI@ /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /c
+# ADD CPP /nologo /MD /W3 @COPTX@ @COPTI@ /O2 /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "NDEBUG" /D "__STDC__" /D "WIN32" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console @MACHINE@
+# ADD LINK32 user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Release/libisc.lib ../../dns/win32/Release/libdns.lib ../../isccfg/win32/Release/libisccfg.lib /nologo /subsystem:console @MACHINE@ /out:"../../../Build/Release/sample-update.exe"
+
+!ELSEIF  "$(CFG)" == "update - @PLATFORM@ Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Debug"
+# PROP Intermediate_Dir "Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_MBCS" @COPTY@ /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "_DEBUG" /D "WIN32" /D "__STDC__" /D "_CONSOLE" /D "_MBCS" /FR /FD /GZ /c
+# SUBTRACT CPP /X @COPTY@
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug @MACHINE@ /pdbtype:sept
+# ADD LINK32 user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Debug/libisc.lib ../../dns/win32/Debug/libdns.lib ../../isccfg/win32/Debug/libisccfg.lib /nologo /subsystem:console /debug @MACHINE@ /out:"../../../Build/Debug/sample-update.exe" /pdbtype:sept
+
+!ENDIF 
+
+# Begin Target
+
+# Name "update - @PLATFORM@ Release"
+# Name "update - @PLATFORM@ Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE="..\sample-update.c"
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# End Group
+# Begin Group "Resource Files"
+
+# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+# End Group
+# End Target
+# End Project
diff --git a/lib/samples/win32/update.dsw b/lib/samples/win32/update.dsw
new file mode 100644
index 0000000..a119c89
--- /dev/null
+++ b/lib/samples/win32/update.dsw
@@ -0,0 +1,29 @@
+Microsoft Developer Studio Workspace File, Format Version 6.00

+# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!

+

+###############################################################################

+

+Project: "update"=".\update.dsp" - Package Owner=<4>

+

+Package=<5>

+{{{

+}}}

+

+Package=<4>

+{{{

+}}}

+

+###############################################################################

+

+Global:

+

+Package=<5>

+{{{

+}}}

+

+Package=<3>

+{{{

+}}}

+

+###############################################################################

+

diff --git a/lib/samples/win32/update.mak.in b/lib/samples/win32/update.mak.in
new file mode 100644
index 0000000..38bfecb
--- /dev/null
+++ b/lib/samples/win32/update.mak.in
@@ -0,0 +1,299 @@
+# Microsoft Developer Studio Generated NMAKE File, Based on update.dsp
+!IF "$(CFG)" == ""
+CFG=update - @PLATFORM@ Debug
+!MESSAGE No configuration specified. Defaulting to update - @PLATFORM@ Debug.
+!ENDIF 
+
+!IF "$(CFG)" != "update - @PLATFORM@ Release" && "$(CFG)" != "update - @PLATFORM@ Debug"
+!MESSAGE Invalid configuration "$(CFG)" specified.
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "update.mak" CFG="update - @PLATFORM@ Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "update - @PLATFORM@ Release" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE "update - @PLATFORM@ Debug" (based on "@PLATFORM@ (x86) Console Application")
+!MESSAGE 
+!ERROR An invalid configuration is specified.
+!ENDIF 
+
+!IF "$(OS)" == "Windows_NT"
+NULL=
+!ELSE 
+NULL=nul
+!ENDIF 
+
+!IF  "$(CFG)" == "update - @PLATFORM@ Release"
+_VC_MANIFEST_INC=0
+_VC_MANIFEST_BASENAME=__VC80
+!ELSE
+_VC_MANIFEST_INC=1
+_VC_MANIFEST_BASENAME=__VC80.Debug
+!ENDIF
+
+####################################################
+# Specifying name of temporary resource file used only in incremental builds:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+_VC_MANIFEST_AUTO_RES=$(_VC_MANIFEST_BASENAME).auto.res
+!else
+_VC_MANIFEST_AUTO_RES=
+!endif
+
+####################################################
+# _VC_MANIFEST_EMBED_EXE - command to embed manifest in EXE:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+#MT_SPECIAL_RETURN=1090650113
+#MT_SPECIAL_SWITCH=-notify_resource_update
+MT_SPECIAL_RETURN=0
+MT_SPECIAL_SWITCH=
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -out:$(_VC_MANIFEST_BASENAME).auto.manifest $(MT_SPECIAL_SWITCH) & \
+if "%ERRORLEVEL%" == "$(MT_SPECIAL_RETURN)" \
+rc /r $(_VC_MANIFEST_BASENAME).auto.rc & \
+link $** /out:$@ $(LFLAGS)
+
+!else
+
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -outputresource:$@;1
+
+!endif
+
+####################################################
+# _VC_MANIFEST_EMBED_DLL - command to embed manifest in DLL:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+#MT_SPECIAL_RETURN=1090650113
+#MT_SPECIAL_SWITCH=-notify_resource_update
+MT_SPECIAL_RETURN=0
+MT_SPECIAL_SWITCH=
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -out:$(_VC_MANIFEST_BASENAME).auto.manifest $(MT_SPECIAL_SWITCH) & \
+if "%ERRORLEVEL%" == "$(MT_SPECIAL_RETURN)" \
+rc /r $(_VC_MANIFEST_BASENAME).auto.rc & \
+link $** /out:$@ $(LFLAGS)
+
+!else
+
+_VC_MANIFEST_EMBED_EXE= \
+if exist $@.manifest mt.exe -manifest $@.manifest -outputresource:$@;2
+
+!endif
+####################################################
+# _VC_MANIFEST_CLEAN - command to clean resources files generated temporarily:
+
+!if "$(_VC_MANIFEST_INC)" == "1"
+
+_VC_MANIFEST_CLEAN=-del $(_VC_MANIFEST_BASENAME).auto.res \
+    $(_VC_MANIFEST_BASENAME).auto.rc \
+    $(_VC_MANIFEST_BASENAME).auto.manifest
+
+!else
+
+_VC_MANIFEST_CLEAN=
+
+!endif
+
+!IF  "$(CFG)" == "update - @PLATFORM@ Release"
+
+OUTDIR=.\Release
+INTDIR=.\Release
+
+ALL : "..\..\..\Build\Release\sample-update.exe"
+
+
+CLEAN :
+	-@erase "$(INTDIR)\sample-update.obj"
+	-@erase "$(INTDIR)\vc60.idb"
+	-@erase "..\..\..\Build\Release\sample-update.exe"
+	-@$(_VC_MANIFEST_CLEAN)
+
+"$(OUTDIR)" :
+    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
+
+CPP=cl.exe
+CPP_PROJ=/nologo /MD /W3 @COPTX@ @COPTI@ /O2 /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "NDEBUG" /D "__STDC__" /D "WIN32" /D "_CONSOLE" /D "_MBCS" /Fp"$(INTDIR)\sample-update.pch" @COPTY@ /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /c 
+
+.c{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.c{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+RSC=rc.exe
+BSC32=bscmake.exe
+BSC32_FLAGS=/nologo /o"$(OUTDIR)\sample-update.bsc" 
+BSC32_SBRS= \
+	
+LINK32=link.exe
+LINK32_FLAGS=user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Release/libisc.lib ../../dns/win32/Release/libdns.lib ../../isccfg/win32/Release/libisccfg.lib /nologo /subsystem:console /incremental:no /pdb:"$(OUTDIR)\sample-update.pdb" @MACHINE@ /out:"../../../Build/Release/sample-update.exe" 
+LINK32_OBJS= \
+	"$(INTDIR)\sample-update.obj"
+
+"..\..\..\Build\Release\sample-update.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS)
+    $(LINK32) @<<
+  $(LINK32_FLAGS) $(LINK32_OBJS)
+<<
+    $(_VC_MANIFEST_EMBED_EXE)
+
+!ELSEIF  "$(CFG)" == "update - @PLATFORM@ Debug"
+
+OUTDIR=.\Debug
+INTDIR=.\Debug
+# Begin Custom Macros
+OutDir=.\Debug
+# End Custom Macros
+
+ALL : "..\..\..\Build\Debug\sample-update.exe" "$(OUTDIR)\sample-update.bsc"
+
+
+CLEAN :
+	-@erase "$(INTDIR)\sample-update.obj"
+	-@erase "$(INTDIR)\sample-update.sbr"
+	-@erase "$(INTDIR)\vc60.idb"
+	-@erase "$(INTDIR)\vc60.pdb"
+	-@erase "$(OUTDIR)\sample-update.pdb"
+	-@erase "$(OUTDIR)\sample-update.bsc"
+	-@erase "..\..\..\Build\Debug\sample-update.exe"
+	-@erase "..\..\..\Build\Debug\sample-update.ilk"
+	-@$(_VC_MANIFEST_CLEAN)
+
+"$(OUTDIR)" :
+    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
+
+CPP=cl.exe
+CPP_PROJ=/nologo /MDd /W3 /Gm @COPTX@ @COPTI@ /ZI /Od /I "../../../" @LIBXML2_INC@ @OPENSSL_INC@ /I "../../isc/win32" /I "../../isc/win32/include" /I "../../isc/include" /I "../../dns/win32/include" /I "../../dns/include" /D "_DEBUG" /D "WIN32" /D "__STDC__" /D "_CONSOLE" /D "_MBCS" /FR"$(INTDIR)\\" /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /GZ /c 
+
+.c{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.obj::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.c{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cpp{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+.cxx{$(INTDIR)}.sbr::
+   $(CPP) @<<
+   $(CPP_PROJ) $< 
+<<
+
+RSC=rc.exe
+BSC32=bscmake.exe
+BSC32_FLAGS=/nologo /o"$(OUTDIR)\sample-update.bsc" 
+BSC32_SBRS= \
+	"$(INTDIR)\sample-update.sbr"
+
+"$(OUTDIR)\sample-update.bsc" : "$(OUTDIR)" $(BSC32_SBRS)
+    $(BSC32) @<<
+  $(BSC32_FLAGS) $(BSC32_SBRS)
+<<
+
+LINK32=link.exe
+LINK32_FLAGS=user32.lib advapi32.lib ws2_32.lib ../../isc/win32/Debug/libisc.lib ../../dns/win32/Debug/libdns.lib ../../isccfg/win32/Debug/libisccfg.lib /nologo /subsystem:console /incremental:yes /pdb:"$(OUTDIR)\sample-update.pdb" /debug @MACHINE@ /out:"../../../Build/Debug/sample-update.exe" /pdbtype:sept 
+LINK32_OBJS= \
+	"$(INTDIR)\sample-update.obj"
+
+"..\..\..\Build\Debug\sample-update.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS)
+    $(LINK32) @<<
+  $(LINK32_FLAGS) $(LINK32_OBJS)
+<<
+    $(_VC_MANIFEST_EMBED_EXE)
+
+!ENDIF 
+
+
+!IF "$(NO_EXTERNAL_DEPS)" != "1"
+!IF EXISTS("sample-update.dep")
+!INCLUDE "sample-update.dep"
+!ELSE 
+!MESSAGE Warning: cannot find "sample-update.dep"
+!ENDIF 
+!ENDIF 
+
+
+!IF "$(CFG)" == "update - @PLATFORM@ Release" || "$(CFG)" == "update - @PLATFORM@ Debug"
+SOURCE="..\sample-update.c"
+
+!IF  "$(CFG)" == "update - @PLATFORM@ Release"
+
+
+"$(INTDIR)\sample-update.obj" : $(SOURCE) "$(INTDIR)"
+	$(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+!ELSEIF  "$(CFG)" == "update - @PLATFORM@ Debug"
+
+
+"$(INTDIR)\sample-update.obj"	"$(INTDIR)\sample-update.sbr" : $(SOURCE) "$(INTDIR)"
+	$(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+!ENDIF 
+
+!ENDIF 
+
+####################################################
+# Commands to generate initial empty manifest file and the RC file
+# that references it, and for generating the .res file:
+
+$(_VC_MANIFEST_BASENAME).auto.res : $(_VC_MANIFEST_BASENAME).auto.rc
+
+$(_VC_MANIFEST_BASENAME).auto.rc : $(_VC_MANIFEST_BASENAME).auto.manifest
+    type <<$@
+#include <winuser.h>
+1RT_MANIFEST"$(_VC_MANIFEST_BASENAME).auto.manifest"
+<< KEEP
+
+$(_VC_MANIFEST_BASENAME).auto.manifest :
+    type <<$@
+<?xml version='1.0' encoding='UTF-8' standalone='yes'?>
+<assembly xmlns='urn:schemas-microsoft-com:asm.v1' manifestVersion='1.0'>
+</assembly>
+<< KEEP
diff --git a/lib/samples/win32/update.vcxproj.filters.in b/lib/samples/win32/update.vcxproj.filters.in
new file mode 100644
index 0000000..8479fba
--- /dev/null
+++ b/lib/samples/win32/update.vcxproj.filters.in
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\sample-update.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/lib/samples/win32/update.vcxproj.in b/lib/samples/win32/update.vcxproj.in
new file mode 100644
index 0000000..3a403ca
--- /dev/null
+++ b/lib/samples/win32/update.vcxproj.in
@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|@PLATFORM@">
+      <Configuration>Debug</Configuration>
+      <Platform>@PLATFORM@</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|@PLATFORM@">
+      <Configuration>Release</Configuration>
+      <Platform>@PLATFORM@</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{05682E12-523F-4DAE-8E6D-ADFDBC308AFD}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>update</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <LinkIncremental>true</LinkIncremental>
+    <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+    <IntDir>.\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <LinkIncremental>false</LinkIncremental>
+    <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+    <IntDir>.\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <PrecompiledHeaderOutputFile>.\$(Configuration)\$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\$(Configuration)\</AssemblerListingLocation>
+      <ObjectFileName>.\$(Configuration)\</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <BrowseInformation>true</BrowseInformation>
+      <AdditionalIncludeDirectories>..\..\..\;@LIBXML2_INC@@OPENSSL_INC@..\..\isc\win32;..\..\isc\win32\include;..\..\isc\include;..\..\dns\win32\include;..\..\dns\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <CompileAs>CompileAsC</CompileAs>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <OutputFile>..\..\..\Build\$(Configuration)\$(TargetName)$(TargetExt)</OutputFile>
+      <AdditionalLibraryDirectories>..\..\isc\win32\$(Configuration);..\..\dns\win32\$(Configuration);..\..\isccfg\win32\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libisc.lib;libdns.lib;libisccfg.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>@INTRINSIC@</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
+      <WholeProgramOptimization>false</WholeProgramOptimization>
+      <StringPooling>true</StringPooling>
+      <PrecompiledHeaderOutputFile>.\$(Configuration)\$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\$(Configuration)\</AssemblerListingLocation>
+      <ObjectFileName>.\$(Configuration)\</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)$(TargetName).pdb</ProgramDataBaseFileName>
+      <AdditionalIncludeDirectories>..\..\..\;@LIBXML2_INC@@OPENSSL_INC@..\..\isc\win32;..\..\isc\win32\include;..\..\isc\include;..\..\dns\win32\include;..\..\dns\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <CompileAs>CompileAsC</CompileAs>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <OutputFile>..\..\..\Build\$(Configuration)\$(TargetName)$(TargetExt)</OutputFile>
+      <LinkTimeCodeGeneration>Default</LinkTimeCodeGeneration>
+      <AdditionalLibraryDirectories>..\..\isc\win32\$(Configuration);..\..\dns\win32\$(Configuration);..\..\isccfg\win32\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libisc.lib;libdns.lib;libisccfg.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\sample-update.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
diff --git a/lib/samples/win32/update.vcxproj.user b/lib/samples/win32/update.vcxproj.user
new file mode 100644
index 0000000..695b5c7
--- /dev/null
+++ b/lib/samples/win32/update.vcxproj.user
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+</Project>
\ No newline at end of file