From d14cd8adb6d114e10dbd57852ce7da9d6d8cfbe9 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <sipa@ulyssis.org>
Date: Tue, 20 Dec 2011 22:18:13 +0100
Subject: [PATCH] result permutation

---
 dns.c    |  4 ++--
 main.cpp | 11 ++++++++++-
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/dns.c b/dns.c
index 2298841..638b67f 100644
--- a/dns.c
+++ b/dns.c
@@ -295,8 +295,8 @@ ssize_t static dnshandle(dns_opt_t *opt, const unsigned char *inbuf, size_t insi
   
   // A records
   if ((typ == TYPE_A || typ == QTYPE_ANY) && (cls == CLASS_IN || cls == QCLASS_ANY)) {
-    struct in_addr addr[20];
-    int naddr = opt->cb(addr, 20, 1);
+    struct in_addr addr[32];
+    int naddr = opt->cb(addr, 32, 1);
     int n = 0;
     while (n < naddr) {
       int ret = write_record_a(&outpos, outend - auth_size, "", offset, CLASS_IN, opt->datattl, &addr[n]);
diff --git a/main.cpp b/main.cpp
index df2f9e2..2fa4d1f 100644
--- a/main.cpp
+++ b/main.cpp
@@ -44,12 +44,21 @@ extern "C" int GetIPList(struct in_addr *addr, int max, int ipv4only) {
     if ((*it).GetInAddr(&addr[n]))
       n++;
   }
+  // permute list
+  for (int i=0; i<n; i++) {
+    int k = i + (rand() % (n-i));
+    if (i != k) {
+      struct in_addr sw = addr[i];
+      addr[i] = addr[k];
+      addr[k] = sw;
+    }
+  }
   return n;
 }
 
 extern "C" void* ThreadDNS(void*) {
   dns_opt_t opt;
-  opt.host = "seedtest.bitcoin.sipa.be";
+  opt.host = "seed.bitcoin.sipa.be";
   opt.ns = "vps.sipa.be";
   opt.mbox = "sipa.ulyssis.org";
   opt.datattl = 60;