Add DNS seed support for testnet

src/net.cpp

@@ -1145,11 +1145,17 @@ void MapPort()
 // Each pair gives a source name and a seed name.
 // The first name is used as information source for addrman.
 // The second name should resolve to a list of seed addresses.
-static const char *strDNSSeed[][2] = {
+static const char *strMainNetDNSSeed[][2] = {
     {"bitcoin.sipa.be", "seed.bitcoin.sipa.be"},
     {"bluematt.me", "dnsseed.bluematt.me"},
     {"dashjr.org", "dnsseed.bitcoin.dashjr.org"},
     {"xf2.org", "bitseed.xf2.org"},
+    {NULL, NULL}
+};
+
+static const char *strTestNetDNSSeed[][2] = {
+    {"bitcoin.petertodd.org", "testnet-seed.bitcoin.petertodd.org"},
+    {NULL, NULL}
 };
 
 void ThreadDNSAddressSeed(void* parg)
@@ -1175,14 +1181,14 @@ void ThreadDNSAddressSeed(void* parg)
 
 void ThreadDNSAddressSeed2(void* parg)
 {
+    static const char *(*strDNSSeed)[2] = fTestNet ? strTestNetDNSSeed : strMainNetDNSSeed;
+
     printf("ThreadDNSAddressSeed started\n");
     int found = 0;
 
-    if (!fTestNet)
-    {
     printf("Loading addresses from DNS seeds (could take a while)\n");
 
-        for (unsigned int seed_idx = 0; seed_idx < ARRAYLEN(strDNSSeed); seed_idx++) {
+    for (unsigned int seed_idx = 0; strDNSSeed[seed_idx][0] != NULL; seed_idx++) {
         if (HaveNameProxy()) {
             AddOneShot(strDNSSeed[seed_idx][1]);
         } else {
@@ -1202,7 +1208,6 @@ void ThreadDNSAddressSeed2(void* parg)
             addrman.Add(vAdd, CNetAddr(strDNSSeed[seed_idx][0], true));
         }
     }
-    }
 
     printf("%d addresses found from DNS seeds\n", found);
 }