Separate listening sockets, -bind=<addr>

1 files changed, 31 insertions, 5 deletions

diff --git a/src/init.cpp b/src/init.cpp
index 202d513677..877b1d471f 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -119,6 +119,18 @@ bool AppInit(int argc, char* argv[])
     return fRet;
 }
 
+bool static Bind(const CService &addr) {
+    if (IsLimited(addr))
+        return false;
+    std::string strError;
+    if (!BindListenPort(addr, strError))
+    {
+        ThreadSafeMessageBox(strError, _("Bitcoin"), wxOK | wxMODAL);
+        return false;
+    }
+    return true;
+}
+
 bool AppInit2(int argc, char* argv[])
 {
 #ifdef _MSC_VER
@@ -193,6 +205,7 @@ bool AppInit2(int argc, char* argv[])
             "  -discover        \t  "   + _("Try to discover public IP address (default: 1)") + "\n" +
             "  -irc             \t  "   + _("Find peers using internet relay chat (default: 0)") + "\n" +
             "  -listen          \t  "   + _("Accept connections from outside (default: 1)") + "\n" +
+            "  -bind=<addr>     \t  "   + _("Bind to given address. Use [host]:port notation for IPv6") + "\n" +
 #ifdef QT_GUI
             "  -lang=<lang>     \t\t  " + _("Set language, for example \"de_DE\" (default: system locale)") + "\n" +
 #endif
@@ -548,7 +561,11 @@ bool AppInit2(int argc, char* argv[])
 
     if (mapArgs.count("-connect"))
         SoftSetBoolArg("-dnsseed", false);
- 
+
+    // even in Tor mode, if -bind is specified, you really want -listen
+    if (mapArgs.count("-bind"))
+        SoftSetBoolArg("-listen", true);
+
     bool fTor = (fUseProxy && addrProxy.GetPort() == 9050);
     if (fTor)
     {
@@ -588,14 +605,23 @@ bool AppInit2(int argc, char* argv[])
     const char* pszP2SH = "/P2SH/";
     COINBASE_FLAGS << std::vector<unsigned char>(pszP2SH, pszP2SH+strlen(pszP2SH));
 
+    bool fBound = false;
     if (!fNoListen)
     {
         std::string strError;
-        if (!BindListenPort(strError))
-        {
-            ThreadSafeMessageBox(strError, _("Bitcoin"), wxOK | wxMODAL);
-            return false;
+        if (mapArgs.count("-bind")) {
+            BOOST_FOREACH(std::string strBind, mapMultiArgs["-bind"]) {
+                fBound |= Bind(CService(strBind, GetDefaultPort(), false));
+            }
+        } else {
+            struct in_addr inaddr_any = {s_addr: INADDR_ANY};
+            fBound |= Bind(CService(inaddr_any, GetDefaultPort()));
+#ifdef USE_IPV6
+            fBound |= Bind(CService(in6addr_any, GetDefaultPort()));
+#endif
         }
+        if (!fBound)
+            return false;
     }
 
     if (mapArgs.count("-externalip"))