Avoid querying DNS seeds, if we have open connections.

Also add a new dns seed.
Tranz5 · Aug 26, 2014 · 7f7cc91 · 7f7cc91
1 parent a268230
commit 7f7cc91
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Showing 2 changed files with 14 additions and 3 deletions.
diff --git a/src/init.cpp b/src/init.cpp
@@ -252,7 +252,8 @@ std::string HelpMessage()
         "  -irc                   " + _("Find peers using internet relay chat (default: 1)") + "\n" +
         "  -listen                " + _("Accept connections from outside (default: 1 if no -proxy or -connect)") + "\n" +
         "  -bind=<addr>           " + _("Bind to given address. Use [host]:port notation for IPv6") + "\n" +
-        "  -dnsseed               " + _("Find peers using DNS lookup (default: 0)") + "\n" +
+        "  -dnsseed               " + _("Query for peer addresses via DNS lookup, if low on addresses (default: 1 unless -connect)") + "\n" +
+        "  -forcednsseed          " + _("Always query for peer addresses via DNS lookup (default: 0)") + "\n" +
         "  -synctime              " + _("Sync time with other nodes. Disable if time on your system is precise e.g. syncing with NTP (default: 1)") + "\n" +
         "  -cppolicy              " + _("Sync checkpoints policy (default: strict)") + "\n" +
         "  -banscore=<n>          " + _("Threshold for disconnecting misbehaving peers (default: 100)") + "\n" +

diff --git a/src/net.cpp b/src/net.cpp
@@ -1259,8 +1259,7 @@ static const char *strDNSSeed[][2] = {
     {"hoboseed2", "seed2.hobonickels.info"},
     {"hoboseed3", "seed3.hobonickels.info"},
     {"hoboseed4", "seed4.hobonickels.info"},
-
-
+    {"cce",   "hbn.altcointech.net"},
 };
 
 void ThreadDNSAddressSeed(void* parg)
@@ -1287,6 +1286,17 @@ void ThreadDNSAddressSeed(void* parg)
 void ThreadDNSAddressSeed2(void* parg)
 {
     printf("ThreadDNSAddressSeed started\n");
+
+    // goal: only query DNS seeds if address need is acute
+    if ((addrman.size() > 0) && (!GetBoolArg("-forcednsseed", false))) {
+        MilliSleep(25* 1000);
+
+        LOCK(cs_vNodes);
+        if (vNodes.size() >= 2) {
+            printf("P2P peers available. Skipped DNS seeding.\n");
+            return;
+        }
+    }
     int found = 0;
 
     if (!fTestNet)