diff options
author | John Denker <jsd@av8n.com> | 2012-07-29 15:45:38 -0700 |
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committer | John Denker <jsd@av8n.com> | 2012-07-29 15:45:38 -0700 |
commit | 0d2205555e68f414eec0afa8a6531626f77c4a57 (patch) | |
tree | f0e7d3e161f82180e834a6368d41b79272ab013a /ucspi-tcp-0.88/dns_sortip6.c | |
parent | 0c7195dea3482bd4c9ac9fbff318c24c502574c6 (diff) | |
parent | 01ef1d365e5776b130e8b65772a80b6adcb0ed46 (diff) |
Merge branch 'master' of ephedra:usr/src/qmail into e_master
Diffstat (limited to 'ucspi-tcp-0.88/dns_sortip6.c')
-rw-r--r-- | ucspi-tcp-0.88/dns_sortip6.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/ucspi-tcp-0.88/dns_sortip6.c b/ucspi-tcp-0.88/dns_sortip6.c new file mode 100644 index 0000000..7e752e9 --- /dev/null +++ b/ucspi-tcp-0.88/dns_sortip6.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_sortip6(char *s,unsigned int n) +{ + unsigned int i; + char tmp[16]; + + n >>= 4; + while (n > 1) { + i = dns_random(n); + --n; + byte_copy(tmp,16,s + (i << 4)); + byte_copy(s + (i << 4),16,s + (n << 4)); + byte_copy(s + (n << 4),16,tmp); + } +} |