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70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
/*
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* Copyright (C) 2017 Kaspar Schleiser <kaspar@schleiser.de>
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup tests
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* @{
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*
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* @file
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* @brief sock DNS client test application
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*
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* @author Kaspar Schleiser <kaspar@schleiser.de>
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*
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* @}
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*/
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#include <stddef.h>
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#include <stdio.h>
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#include <arpa/inet.h>
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#include "net/sock/dns.h"
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#include "net/sock/util.h"
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#include "xtimer.h"
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#ifndef TEST_NAME
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#define TEST_NAME "example.org"
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#endif
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#ifndef DNS_SERVER
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#define DNS_SERVER "[2001:db8::1]:53"
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#endif
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/* global DNS server UDP endpoint */
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sock_udp_ep_t sock_dns_server;
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/* import "ifconfig" shell command, used for printing addresses */
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extern int _gnrc_netif_config(int argc, char **argv);
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int main(void)
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{
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uint8_t addr[16] = {0};
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sock_udp_str2ep(&sock_dns_server, DNS_SERVER);
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puts("waiting for router advertisement...");
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xtimer_usleep(1U*1000000);
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/* print network addresses */
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puts("Configured network interfaces:");
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_gnrc_netif_config(0, NULL);
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int res = sock_dns_query(TEST_NAME, addr, AF_UNSPEC);
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if (res > 0) {
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char addrstr[INET6_ADDRSTRLEN];
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inet_ntop(res == 4 ? AF_INET : AF_INET6, addr, addrstr, sizeof(addrstr));
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printf("%s resolves to %s\n", TEST_NAME, addrstr);
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}
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else {
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printf("error resolving %s\n", TEST_NAME);
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}
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return 0;
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}
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