diff options
| -rw-r--r-- | llmnr-query.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/llmnr-query.c b/llmnr-query.c index 66bbe89..08d6ec5 100644 --- a/llmnr-query.c +++ b/llmnr-query.c @@ -36,11 +36,12 @@ #include "log.h" #include "pkt.h" -static const char *short_ops = "c:i:I:T:6hV"; +static const char *short_ops = "c:i:I:t:T:6hV"; static const struct option long_opts[] = { { "count", required_argument, NULL, 'c' }, { "interval", required_argument, NULL, 'i' }, { "interface", required_argument, NULL, 'I' }, + { "timeout", required_argument, NULL, 't' }, { "type", required_argument, NULL, 'T' }, { "ipv6", no_argument, NULL, '6' }, { "help", no_argument, NULL, 'h' }, @@ -55,6 +56,7 @@ static void __noreturn usage_and_exit(int status) " -c, --count NUM number of queries to send (default: 1)\n" " -i, --interval NUM interval between queries in ms (default: 500)\n" " -I, --interface NAME send multicast over specified interface\n" + " -t, --timeout NUM time to wait for reply in ms (default: 1000)\n" " -T, --type TYPE set query type; must be one of A, AAAA, ANY (default: A)\n" " -6, --ipv6 send queries over IPv6\n" " -h, --help show this help and exit\n" @@ -90,7 +92,7 @@ int main(int argc, char **argv) int c, sock; const char *query_name, *iface = NULL; size_t query_name_len; - unsigned long i, count = 1, interval = 500; + unsigned long i, count = 1, interval = 500, timeout_msec = 1000; uint16_t qtype = LLMNR_QTYPE_A; bool ipv6 = false; struct pkt *p; @@ -106,6 +108,9 @@ int main(int argc, char **argv) case 'I': iface = xstrdup(optarg); break; + case 't': + timeout_msec = strtoul(optarg, NULL, 0); + break; case 'T': if (xstreq("A", optarg)) qtype = LLMNR_QTYPE_A; @@ -233,8 +238,8 @@ int main(int argc, char **argv) FD_SET(sock, &rfds); /* wait up to one second for a response */ - tv.tv_sec = 1; - tv.tv_usec = 0; + tv.tv_sec = timeout_msec / 1000; + tv.tv_usec = (timeout_msec % 1000) * 1000; ret = select(sock + 1, &rfds, NULL, NULL, &tv); if (ret < 0) { @@ -295,7 +300,7 @@ int main(int argc, char **argv) log_info("LLMNR response: %s IN %s %s (TTL %d)\n", name, query_type(type), addr, ttl); } } else - log_info("No LLMNR response received within timeout\n"); + log_info("No LLMNR response received within timeout (%lu msecs)\n", timeout_msec); if (i < count - 1) { pkt_reset(p); |