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-rw-r--r--llmnr-query.c15
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);