mherrb/echoc
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Add an option to limit the number of packet sent.

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Tonton Th 2013-01-06 17:55:38 +01:00 • committed by Matthieu Herrb
parent 6fd2a5e47b
commit 709c2f01a1
1 changed files with 21 additions and 9 deletions
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30
echoc.c
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@ -36,13 +36,12 @@ struct sockaddr *server;
socklen_t serverlen; socklen_t serverlen;
unsigned int seq = 0; unsigned int seq = 0;
static void static void
usage(void) usage(void)
{ {
errx(2, "usage: echoc [-i ms][-t ms][-v] server"); errx(2, "usage: echoc [-c nbr][-i ms][-t ms][-v] server");
} }
static void
static void
send_packet(int unused) send_packet(int unused)
{ {
if (sendto(sock, &seq, sizeof(seq), 0, server, if (sendto(sock, &seq, sizeof(seq), 0, server,
@ -74,11 +73,16 @@ main(int argc, char *argv[])
int nfds, received = 0; int nfds, received = 0;
int error, buffer, last = -1; int error, buffer, last = -1;
int disconnected; int disconnected;
int we_count = 0, counter; /* don't loop forever */
extern int optind; extern int optind;
setbuf(stdout, NULL); setbuf(stdout, NULL);
while ((ch = getopt(argc, argv, "i:t:v")) != -1) { while ((ch = getopt(argc, argv, "c:i:t:v")) != -1) {
switch (ch) { switch (ch) {
case 'c':
we_count++;
counter = atoi(optarg);
break;
case 'i': case 'i':
interval = atoi(optarg); interval = atoi(optarg);
break; break;
@ -99,7 +103,8 @@ main(int argc, char *argv[])
if (interval <= 0 || timeout <= 0) if (interval <= 0 || timeout <= 0)
errx(2, "interval and timeout must be > 0"); errx(2, "interval and timeout must be > 0");
if (counter < 2)
errx(2, "can't count down from nothing");
/* force timeout >= interval */ /* force timeout >= interval */
if (timeout < interval) { if (timeout < interval) {
timeout = interval; timeout = interval;
@ -205,6 +210,13 @@ main(int argc, char *argv[])
if (verbose) if (verbose)
printf("received %d %ld.%06ld\n", buffer, printf("received %d %ld.%06ld\n", buffer,
(long)diff.tv_sec, diff.tv_usec); (long)diff.tv_sec, diff.tv_usec);
if (we_count) {
counter--;
if (counter == 0) {
printf("all job done\n");
break;
}
}
} }
close(sock); close(sock);
exit(0); exit(0);