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ping: fancier sub-ms printing (I think %Ng is supposed to do this, but mine might be broken?)

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K. Lange 2021-09-18 10:10:53 +09:00
parent 7d5bfe4a63
commit 33848f8a8e
1 changed files with 11 additions and 3 deletions
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14
apps/ping.c
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@ -141,10 +141,18 @@ int main(int argc, char * argv[]) {
size_t len = ntohs(ipv4->length) - sizeof(struct IPV4_Header);
/* Get the address */
char * from = inet_ntoa(*(struct in_addr*)&ipv4->source);
printf("%zd bytes from %s: icmp_seq=%d ttl=%d time=%zd ms\n",
int time_taken = (rcvd_at - sent_at);
printf("%zd bytes from %s: icmp_seq=%d ttl=%d time=%d",
len, from, ntohs(icmp->sequence_number), ipv4->ttl,
(rcvd_at - sent_at) / 1000);
time_taken / 1000);
if (time_taken < 1000) {
printf(".%03d", time_taken % 1000);
} else if (time_taken < 10000) {
printf(".%02d", (time_taken / 10) % 100);
} else if (time_taken < 100000) {
printf(".%01d", (time_taken / 100) % 10);
}
printf(" ms\n");
responses_received++;
}