diff options
Diffstat (limited to 'ucspi-tcp-0.88/dns_sortip.c')
-rw-r--r-- | ucspi-tcp-0.88/dns_sortip.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/ucspi-tcp-0.88/dns_sortip.c b/ucspi-tcp-0.88/dns_sortip.c new file mode 100644 index 0000000..af9b235 --- /dev/null +++ b/ucspi-tcp-0.88/dns_sortip.c @@ -0,0 +1,20 @@ +#include "byte.h" +#include "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); + } +} |