Files
mars-libowfat/dns/dns_sortip.c
2025-01-20 16:43:48 +00:00

21 lines
428 B
C

#include <libowfat/byte.h>
#include <libowfat/dns.h>
/* XXX: sort servers by configurable notion of closeness? */
/* XXX: pay attention to competence of each server? */
void dns_sortip(char *s,unsigned int n)
{
unsigned int i;
char tmp[4];
n >>= 2;
while (n > 1) {
i = dns_random(n);
--n;
byte_copy(tmp,4,s + (i << 2));
byte_copy(s + (i << 2),4,s + (n << 2));
byte_copy(s + (n << 2),4,tmp);
}
}