Remove BOOST_FOREACH macro
[novacoin.git] / src / net.cpp
index c4bd027..c69e83c 100644 (file)
@@ -1,70 +1,89 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2012 The Bitcoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
-// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include "headers.h"
 #include "irc.h"
 #include "db.h"
 #include "net.h"
 #include "init.h"
-#include "strlcpy.h"
 #include "addrman.h"
+#include "ui_interface.h"
+#include "miner.h"
+#include "ntp.h"
 
 #ifdef WIN32
 #include <string.h>
 #endif
 
-#ifdef USE_UPNP
-#include <miniupnpc/miniwget.h>
-#include <miniupnpc/miniupnpc.h>
-#include <miniupnpc/upnpcommands.h>
-#include <miniupnpc/upnperrors.h>
-#endif
-
 using namespace std;
 using namespace boost;
 
-static const int MAX_OUTBOUND_CONNECTIONS = 8;
+static const int MAX_OUTBOUND_CONNECTIONS = 16;
 
 void ThreadMessageHandler2(void* parg);
 void ThreadSocketHandler2(void* parg);
 void ThreadOpenConnections2(void* parg);
 void ThreadOpenAddedConnections2(void* parg);
-#ifdef USE_UPNP
-void ThreadMapPort2(void* parg);
-#endif
 void ThreadDNSAddressSeed2(void* parg);
-bool OpenNetworkConnection(const CAddress& addrConnect);
 
+// Fix for ancient MinGW versions, that don't have defined these in ws2tcpip.h.
+// Todo: Can be removed when our pull-tester is upgraded to a modern MinGW version.
+#ifdef WIN32
+#ifndef PROTECTION_LEVEL_UNRESTRICTED
+#define PROTECTION_LEVEL_UNRESTRICTED 10
+#endif
+#ifndef IPV6_PROTECTION_LEVEL
+#define IPV6_PROTECTION_LEVEL 23
+#endif
+#endif
 
+struct LocalServiceInfo {
+    int nScore;
+    uint16_t nPort;
+};
 
 //
 // Global state variables
 //
 bool fClient = false;
-bool fAllowDNS = false;
-static bool fUseUPnP = false;
-uint64 nLocalServices = (fClient ? 0 : NODE_NETWORK);
-CAddress addrLocalHost(CService("0.0.0.0", 0), nLocalServices);
+bool fDiscover = true;
+uint64_t nLocalServices = (fClient ? 0 : NODE_NETWORK);
+static CCriticalSection cs_mapLocalHost;
+static map<CNetAddr, LocalServiceInfo> mapLocalHost;
+static bool vfReachable[NET_MAX] = {};
+static bool vfLimited[NET_MAX] = {};
 static CNode* pnodeLocalHost = NULL;
-uint64 nLocalHostNonce = 0;
-array<int, THREAD_MAX> vnThreadsRunning;
-static SOCKET hListenSocket = INVALID_SOCKET;
+static CNode* pnodeSync = NULL;
+CAddress addrSeenByPeer(CService("0.0.0.0", nPortZero), nLocalServices);
+uint64_t nLocalHostNonce = 0;
+boost::array<int, THREAD_MAX> vnThreadsRunning;
+static std::vector<SOCKET> vhListenSocket;
 CAddrMan addrman;
 
 vector<CNode*> vNodes;
 CCriticalSection cs_vNodes;
 map<CInv, CDataStream> mapRelay;
-deque<pair<int64, CInv> > vRelayExpiration;
+deque<pair<int64_t, CInv> > vRelayExpiration;
 CCriticalSection cs_mapRelay;
-map<CInv, int64> mapAlreadyAskedFor;
+map<CInv, int64_t> mapAlreadyAskedFor;
 
+static deque<string> vOneShots;
+CCriticalSection cs_vOneShots;
 
 set<CNetAddr> setservAddNodeAddresses;
 CCriticalSection cs_setservAddNodeAddresses;
 
+vector<std::string> vAddedNodes;
+CCriticalSection cs_vAddedNodes;
 
+static CSemaphore *semOutbound = NULL;
+
+void AddOneShot(string strDest)
+{
+    LOCK(cs_vOneShots);
+    vOneShots.push_back(strDest);
+}
 
 unsigned short GetListenPort()
 {
@@ -82,12 +101,49 @@ void CNode::PushGetBlocks(CBlockIndex* pindexBegin, uint256 hashEnd)
     PushMessage("getblocks", CBlockLocator(pindexBegin), hashEnd);
 }
 
+// find 'best' local address for a particular peer
+bool GetLocal(CService& addr, const CNetAddr *paddrPeer)
+{
+    if (fNoListen)
+        return false;
 
+    int nBestScore = -1;
+    int nBestReachability = -1;
+    {
+        LOCK(cs_mapLocalHost);
+        for (map<CNetAddr, LocalServiceInfo>::iterator it = mapLocalHost.begin(); it != mapLocalHost.end(); it++)
+        {
+            int nScore = (*it).second.nScore;
+            int nReachability = (*it).first.GetReachabilityFrom(paddrPeer);
+            if (nReachability > nBestReachability || (nReachability == nBestReachability && nScore > nBestScore))
+            {
+                addr = CService((*it).first, (*it).second.nPort);
+                nBestReachability = nReachability;
+                nBestScore = nScore;
+            }
+        }
+    }
+    return nBestScore >= 0;
+}
+
+// get best local address for a particular peer as a CAddress
+CAddress GetLocalAddress(const CNetAddr *paddrPeer)
+{
+    CAddress ret(CService("0.0.0.0", nPortZero), 0);
+    CService addr;
+    if (GetLocal(addr, paddrPeer))
+    {
+        ret = CAddress(addr);
+        ret.nServices = nLocalServices;
+        ret.nTime = GetAdjustedTime();
+    }
+    return ret;
+}
 
 bool RecvLine(SOCKET hSocket, string& strLine)
 {
     strLine = "";
-    loop
+    for ( ; ; )
     {
         char c;
         int nBytes = recv(hSocket, &c, 1, 0);
@@ -135,250 +191,145 @@ bool RecvLine(SOCKET hSocket, string& strLine)
     }
 }
 
-
-
-bool GetMyExternalIP2(const CService& addrConnect, const char* pszGet, const char* pszKeyword, CNetAddr& ipRet)
+// used when scores of local addresses may have changed
+// pushes better local address to peers
+void static AdvertizeLocal()
 {
-    SOCKET hSocket;
-    if (!ConnectSocket(addrConnect, hSocket))
-        return error("GetMyExternalIP() : connection to %s failed", addrConnect.ToString().c_str());
-
-    send(hSocket, pszGet, strlen(pszGet), MSG_NOSIGNAL);
-
-    string strLine;
-    while (RecvLine(hSocket, strLine))
+    LOCK(cs_vNodes);
+    BOOST_FOREACH(CNode* pnode, vNodes)
     {
-        if (strLine.empty()) // HTTP response is separated from headers by blank line
+        if (pnode->fSuccessfullyConnected)
         {
-            loop
+            CAddress addrLocal = GetLocalAddress(&pnode->addr);
+            if (addrLocal.IsRoutable() && (CService)addrLocal != pnode->addrLocal)
             {
-                if (!RecvLine(hSocket, strLine))
-                {
-                    closesocket(hSocket);
-                    return false;
-                }
-                if (pszKeyword == NULL)
-                    break;
-                if (strLine.find(pszKeyword) != -1)
-                {
-                    strLine = strLine.substr(strLine.find(pszKeyword) + strlen(pszKeyword));
-                    break;
-                }
+                pnode->PushAddress(addrLocal);
+                pnode->addrLocal = addrLocal;
             }
-            closesocket(hSocket);
-            if (strLine.find("<") != -1)
-                strLine = strLine.substr(0, strLine.find("<"));
-            strLine = strLine.substr(strspn(strLine.c_str(), " \t\n\r"));
-            while (strLine.size() > 0 && isspace(strLine[strLine.size()-1]))
-                strLine.resize(strLine.size()-1);
-            CService addr(strLine,0,true);
-            printf("GetMyExternalIP() received [%s] %s\n", strLine.c_str(), addr.ToString().c_str());
-            if (!addr.IsValid() || !addr.IsRoutable())
-                return false;
-            ipRet.SetIP(addr);
-            return true;
         }
     }
-    closesocket(hSocket);
-    return error("GetMyExternalIP() : connection closed");
 }
 
-// We now get our external IP from the IRC server first and only use this as a backup
-bool GetMyExternalIP(CNetAddr& ipRet)
+void SetReachable(enum Network net, bool fFlag)
 {
-    CService addrConnect;
-    const char* pszGet;
-    const char* pszKeyword;
+    LOCK(cs_mapLocalHost);
+    vfReachable[net] = fFlag;
+    if (net == NET_IPV6 && fFlag)
+        vfReachable[NET_IPV4] = true;
+}
 
-    if (fNoListen||fUseProxy)
+// learn a new local address
+bool AddLocal(const CService& addr, int nScore)
+{
+    if (!addr.IsRoutable())
         return false;
 
-    for (int nLookup = 0; nLookup <= 1; nLookup++)
-    for (int nHost = 1; nHost <= 2; nHost++)
-    {
-        // We should be phasing out our use of sites like these.  If we need
-        // replacements, we should ask for volunteers to put this simple
-        // php file on their webserver that prints the client IP:
-        //  <?php echo $_SERVER["REMOTE_ADDR"]; ?>
-        if (nHost == 1)
-        {
-            addrConnect = CService("91.198.22.70",80); // checkip.dyndns.org
-
-            if (nLookup == 1)
-            {
-                CService addrIP("checkip.dyndns.org", 80, true);
-                if (addrIP.IsValid())
-                    addrConnect = addrIP;
-            }
-
-            pszGet = "GET / HTTP/1.1\r\n"
-                     "Host: checkip.dyndns.org\r\n"
-                     "User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n"
-                     "Connection: close\r\n"
-                     "\r\n";
-
-            pszKeyword = "Address:";
-        }
-        else if (nHost == 2)
-        {
-            addrConnect = CService("74.208.43.192", 80); // www.showmyip.com
+    if (!fDiscover && nScore < LOCAL_MANUAL)
+        return false;
 
-            if (nLookup == 1)
-            {
-                CService addrIP("www.showmyip.com", 80, true);
-                if (addrIP.IsValid())
-                    addrConnect = addrIP;
-            }
+    if (IsLimited(addr))
+        return false;
 
-            pszGet = "GET /simple/ HTTP/1.1\r\n"
-                     "Host: www.showmyip.com\r\n"
-                     "User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n"
-                     "Connection: close\r\n"
-                     "\r\n";
+    printf("AddLocal(%s,%i)\n", addr.ToString().c_str(), nScore);
 
-            pszKeyword = NULL; // Returns just IP address
+    {
+        LOCK(cs_mapLocalHost);
+        bool fAlready = mapLocalHost.count(addr) > 0;
+        LocalServiceInfo &info = mapLocalHost[addr];
+        if (!fAlready || nScore >= info.nScore) {
+            info.nScore = nScore + (fAlready ? 1 : 0);
+            info.nPort = addr.GetPort();
         }
-
-        if (GetMyExternalIP2(addrConnect, pszGet, pszKeyword, ipRet))
-            return true;
+        SetReachable(addr.GetNetwork());
     }
 
-    return false;
+    AdvertizeLocal();
+
+    return true;
 }
 
-void ThreadGetMyExternalIP(void* parg)
+bool AddLocal(const CNetAddr &addr, int nScore)
 {
-    // Wait for IRC to get it first
-    if (GetBoolArg("-irc", false))
-    {
-        for (int i = 0; i < 2 * 60; i++)
-        {
-            Sleep(1000);
-            if (fGotExternalIP || fShutdown)
-                return;
-        }
-    }
-
-    // Fallback in case IRC fails to get it
-    if (GetMyExternalIP(addrLocalHost))
-    {
-        printf("GetMyExternalIP() returned %s\n", addrLocalHost.ToStringIP().c_str());
-        if (addrLocalHost.IsRoutable())
-        {
-            // If we already connected to a few before we had our IP, go back and addr them.
-            // setAddrKnown automatically filters any duplicate sends.
-            CAddress addr(addrLocalHost);
-            addr.nTime = GetAdjustedTime();
-            CRITICAL_BLOCK(cs_vNodes)
-                BOOST_FOREACH(CNode* pnode, vNodes)
-                    pnode->PushAddress(addr);
-        }
-    }
+    return AddLocal(CService(addr, GetListenPort()), nScore);
 }
 
-
-
-
-
-void AddressCurrentlyConnected(const CService& addr)
+/** Make a particular network entirely off-limits (no automatic connects to it) */
+void SetLimited(enum Network net, bool fLimited)
 {
-    addrman.Connected(addr);
+    if (net == NET_UNROUTABLE)
+        return;
+    LOCK(cs_mapLocalHost);
+    vfLimited[net] = fLimited;
 }
 
+bool IsLimited(enum Network net)
+{
+    LOCK(cs_mapLocalHost);
+    return vfLimited[net];
+}
 
+bool IsLimited(const CNetAddr &addr)
+{
+    return IsLimited(addr.GetNetwork());
+}
 
-
-
-void AbandonRequests(void (*fn)(void*, CDataStream&), void* param1)
+/** vote for a local address */
+bool SeenLocal(const CService& addr)
 {
-    // If the dialog might get closed before the reply comes back,
-    // call this in the destructor so it doesn't get called after it's deleted.
-    CRITICAL_BLOCK(cs_vNodes)
     {
-        BOOST_FOREACH(CNode* pnode, vNodes)
-        {
-            CRITICAL_BLOCK(pnode->cs_mapRequests)
-            {
-                for (map<uint256, CRequestTracker>::iterator mi = pnode->mapRequests.begin(); mi != pnode->mapRequests.end();)
-                {
-                    CRequestTracker& tracker = (*mi).second;
-                    if (tracker.fn == fn && tracker.param1 == param1)
-                        pnode->mapRequests.erase(mi++);
-                    else
-                        mi++;
-                }
-            }
-        }
+        LOCK(cs_mapLocalHost);
+        if (mapLocalHost.count(addr) == 0)
+            return false;
+        mapLocalHost[addr].nScore++;
     }
-}
 
+    AdvertizeLocal();
 
+    return true;
+}
 
-
-
-
-
-//
-// Subscription methods for the broadcast and subscription system.
-// Channel numbers are message numbers, i.e. MSG_TABLE and MSG_PRODUCT.
-//
-// The subscription system uses a meet-in-the-middle strategy.
-// With 100,000 nodes, if senders broadcast to 1000 random nodes and receivers
-// subscribe to 1000 random nodes, 99.995% (1 - 0.99^1000) of messages will get through.
-//
-
-bool AnySubscribed(unsigned int nChannel)
+/** check whether a given address is potentially local */
+bool IsLocal(const CService& addr)
 {
-    if (pnodeLocalHost->IsSubscribed(nChannel))
-        return true;
-    CRITICAL_BLOCK(cs_vNodes)
-        BOOST_FOREACH(CNode* pnode, vNodes)
-            if (pnode->IsSubscribed(nChannel))
-                return true;
-    return false;
+    LOCK(cs_mapLocalHost);
+    return mapLocalHost.count(addr) > 0;
 }
 
-bool CNode::IsSubscribed(unsigned int nChannel)
+/** check whether a given address is in a network we can probably connect to */
+bool IsReachable(const CNetAddr& addr)
 {
-    if (nChannel >= vfSubscribe.size())
-        return false;
-    return vfSubscribe[nChannel];
+    LOCK(cs_mapLocalHost);
+    enum Network net = addr.GetNetwork();
+    return vfReachable[net] && !vfLimited[net];
 }
 
-void CNode::Subscribe(unsigned int nChannel, unsigned int nHops)
-{
-    if (nChannel >= vfSubscribe.size())
-        return;
+extern int GetExternalIPbySTUN(uint64_t rnd, struct sockaddr_in *mapped, const char **srv);
 
-    if (!AnySubscribed(nChannel))
-    {
-        // Relay subscribe
-        CRITICAL_BLOCK(cs_vNodes)
-            BOOST_FOREACH(CNode* pnode, vNodes)
-                if (pnode != this)
-                    pnode->PushMessage("subscribe", nChannel, nHops);
+// We now get our external IP from the IRC server first and only use this as a backup
+bool GetMyExternalIP(CNetAddr& ipRet)
+{
+    struct sockaddr_in mapped;
+    uint64_t rnd = std::numeric_limits<uint64_t>::max();
+    const char *srv;
+    int rc = GetExternalIPbySTUN(rnd, &mapped, &srv);
+    if(rc >= 0) {
+        ipRet = CNetAddr(mapped.sin_addr);
+        printf("GetExternalIPbySTUN(%" PRIu64 ") returned %s in attempt %d; Server=%s\n", rnd, ipRet.ToStringIP().c_str(), rc, srv);
+        return true;
     }
-
-    vfSubscribe[nChannel] = true;
+    return false;
 }
 
-void CNode::CancelSubscribe(unsigned int nChannel)
+void ThreadGetMyExternalIP(void* parg)
 {
-    if (nChannel >= vfSubscribe.size())
-        return;
-
-    // Prevent from relaying cancel if wasn't subscribed
-    if (!vfSubscribe[nChannel])
-        return;
-    vfSubscribe[nChannel] = false;
+    // Make this thread recognisable as the external IP detection thread
+    RenameThread("novacoin-ext-ip");
 
-    if (!AnySubscribed(nChannel))
+    CNetAddr addrLocalHost;
+    if (GetMyExternalIP(addrLocalHost))
     {
-        // Relay subscription cancel
-        CRITICAL_BLOCK(cs_vNodes)
-            BOOST_FOREACH(CNode* pnode, vNodes)
-                if (pnode != this)
-                    pnode->PushMessage("sub-cancel", nChannel);
+        printf("GetMyExternalIP() returned %s\n", addrLocalHost.ToStringIP().c_str());
+        AddLocal(addrLocalHost, LOCAL_HTTP);
     }
 }
 
@@ -386,80 +337,100 @@ void CNode::CancelSubscribe(unsigned int nChannel)
 
 
 
+void AddressCurrentlyConnected(const CService& addr)
+{
+    addrman.Connected(addr);
+}
+
 
 
 
+uint64_t CNode::nTotalBytesRecv = 0;
+uint64_t CNode::nTotalBytesSent = 0;
+CCriticalSection CNode::cs_totalBytesRecv;
+CCriticalSection CNode::cs_totalBytesSent;
 
 CNode* FindNode(const CNetAddr& ip)
 {
-    CRITICAL_BLOCK(cs_vNodes)
-    {
-        BOOST_FOREACH(CNode* pnode, vNodes)
-            if ((CNetAddr)pnode->addr == ip)
-                return (pnode);
-    }
+    LOCK(cs_vNodes);
+    BOOST_FOREACH(CNode* pnode, vNodes)
+        if ((CNetAddr)pnode->addr == ip)
+            return (pnode);
+    return NULL;
+}
+
+CNode* FindNode(std::string addrName)
+{
+    LOCK(cs_vNodes);
+    BOOST_FOREACH(CNode* pnode, vNodes)
+        if (pnode->addrName == addrName)
+            return (pnode);
     return NULL;
 }
 
 CNode* FindNode(const CService& addr)
 {
-    CRITICAL_BLOCK(cs_vNodes)
-    {
-        BOOST_FOREACH(CNode* pnode, vNodes)
-            if ((CService)pnode->addr == addr)
-                return (pnode);
-    }
+    LOCK(cs_vNodes);
+    BOOST_FOREACH(CNode* pnode, vNodes)
+        if ((CService)pnode->addr == addr)
+            return (pnode);
     return NULL;
 }
 
-CNode* ConnectNode(CAddress addrConnect, int64 nTimeout)
+CNode* ConnectNode(CAddress addrConnect, const char *pszDest, int64_t nTimeout)
 {
-    if ((CNetAddr)addrConnect == (CNetAddr)addrLocalHost)
-        return NULL;
+    if (pszDest == NULL) {
+        if (IsLocal(addrConnect))
+            return NULL;
 
-    // Look for an existing connection
-    CNode* pnode = FindNode((CService)addrConnect);
-    if (pnode)
-    {
-        if (nTimeout != 0)
-            pnode->AddRef(nTimeout);
-        else
-            pnode->AddRef();
-        return pnode;
+        // Look for an existing connection
+        CNode* pnode = FindNode((CService)addrConnect);
+        if (pnode)
+        {
+            if (nTimeout != 0)
+                pnode->AddRef(nTimeout);
+            else
+                pnode->AddRef();
+            return pnode;
+        }
     }
 
+
     /// debug print
     printf("trying connection %s lastseen=%.1fhrs\n",
-        addrConnect.ToString().c_str(),
-        (double)(addrConnect.nTime - GetAdjustedTime())/3600.0);
-
-    addrman.Attempt(addrConnect);
+        pszDest ? pszDest : addrConnect.ToString().c_str(),
+        pszDest ? 0 : (double)(GetAdjustedTime() - addrConnect.nTime)/3600.0);
 
     // Connect
     SOCKET hSocket;
-    if (ConnectSocket(addrConnect, hSocket))
+    if (pszDest ? ConnectSocketByName(addrConnect, hSocket, pszDest, GetDefaultPort()) : ConnectSocket(addrConnect, hSocket))
     {
+        addrman.Attempt(addrConnect);
+
         /// debug print
-        printf("connected %s\n", addrConnect.ToString().c_str());
+        printf("connected %s\n", pszDest ? pszDest : addrConnect.ToString().c_str());
 
-        // Set to nonblocking
+        // Set to non-blocking
 #ifdef WIN32
         u_long nOne = 1;
         if (ioctlsocket(hSocket, FIONBIO, &nOne) == SOCKET_ERROR)
-            printf("ConnectSocket() : ioctlsocket nonblocking setting failed, error %d\n", WSAGetLastError());
+            printf("ConnectSocket() : ioctlsocket non-blocking setting failed, error %d\n", WSAGetLastError());
 #else
         if (fcntl(hSocket, F_SETFL, O_NONBLOCK) == SOCKET_ERROR)
-            printf("ConnectSocket() : fcntl nonblocking setting failed, error %d\n", errno);
+            printf("ConnectSocket() : fcntl non-blocking setting failed, error %d\n", errno);
 #endif
 
         // Add node
-        CNode* pnode = new CNode(hSocket, addrConnect, false);
+        CNode* pnode = new CNode(hSocket, addrConnect, pszDest ? pszDest : "", false);
         if (nTimeout != 0)
             pnode->AddRef(nTimeout);
         else
             pnode->AddRef();
-        CRITICAL_BLOCK(cs_vNodes)
+
+        {
+            LOCK(cs_vNodes);
             vNodes.push_back(pnode);
+        }
 
         pnode->nTimeConnected = GetTime();
         return pnode;
@@ -475,34 +446,52 @@ void CNode::CloseSocketDisconnect()
     fDisconnect = true;
     if (hSocket != INVALID_SOCKET)
     {
-        if (fDebug)
-            printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
-        printf("disconnecting node %s\n", addr.ToString().c_str());
-        closesocket(hSocket);
-        hSocket = INVALID_SOCKET;
+        printf("disconnecting node %s\n", addrName.c_str());
+        CloseSocket(hSocket);
         vRecv.clear();
     }
+
+    // in case this fails, we'll empty the recv buffer when the CNode is deleted
+    TRY_LOCK(cs_vRecv, lockRecv);
+    if (lockRecv)
+        vRecv.clear();
+
+    // if this was the sync node, we'll need a new one
+    if (this == pnodeSync)
+        pnodeSync = NULL;
 }
 
 void CNode::Cleanup()
 {
-    // All of a nodes broadcasts and subscriptions are automatically torn down
-    // when it goes down, so a node has to stay up to keep its broadcast going.
-
-    // Cancel subscriptions
-    for (unsigned int nChannel = 0; nChannel < vfSubscribe.size(); nChannel++)
-        if (vfSubscribe[nChannel])
-            CancelSubscribe(nChannel);
 }
 
 
 void CNode::PushVersion()
 {
-    /// when NTP implemented, change to just nTime = GetAdjustedTime()
-    int64 nTime = (fInbound ? GetAdjustedTime() : GetTime());
-    CAddress addrYou = (fUseProxy ? CAddress(CService("0.0.0.0",0)) : addr);
-    CAddress addrMe = (fUseProxy || !addrLocalHost.IsRoutable() ? CAddress(CService("0.0.0.0",0)) : addrLocalHost);
+    int64_t nTime = GetAdjustedTime();
+    CAddress addrYou, addrMe;
+
+    bool fHidden = false;
+    if (addr.IsTor()) {
+        if (mapArgs.count("-torname")) {
+            // Our hidden service address
+            CService addrTorName(mapArgs["-torname"], GetListenPort());
+
+            if (addrTorName.IsValid()) {
+                addrYou = addr;
+                addrMe = CAddress(addrTorName);
+                fHidden = true;
+            }
+        }
+    }
+
+    if (!fHidden) {
+        addrYou = (addr.IsRoutable() && !IsProxy(addr) ? addr : CAddress(CService("0.0.0.0", nPortZero)));
+        addrMe = GetLocalAddress(&addr);
+    }
+
     RAND_bytes((unsigned char*)&nLocalHostNonce, sizeof(nLocalHostNonce));
+    printf("send version message: version %d, blocks=%d, us=%s, them=%s, peer=%s\n", PROTOCOL_VERSION, nBestHeight, addrMe.ToString().c_str(), addrYou.ToString().c_str(), addr.ToString().c_str());
     PushMessage("version", PROTOCOL_VERSION, nLocalServices, nTime, addrYou, addrMe,
                 nLocalHostNonce, FormatSubVersion(CLIENT_NAME, CLIENT_VERSION, std::vector<string>()), nBestHeight);
 }
@@ -511,7 +500,7 @@ void CNode::PushVersion()
 
 
 
-std::map<CNetAddr, int64> CNode::setBanned;
+std::map<CNetAddr, int64_t> CNode::setBanned;
 CCriticalSection CNode::cs_setBanned;
 
 void CNode::ClearBanned()
@@ -522,12 +511,12 @@ void CNode::ClearBanned()
 bool CNode::IsBanned(CNetAddr ip)
 {
     bool fResult = false;
-    CRITICAL_BLOCK(cs_setBanned)
     {
-        std::map<CNetAddr, int64>::iterator i = setBanned.find(ip);
+        LOCK(cs_setBanned);
+        std::map<CNetAddr, int64_t>::iterator i = setBanned.find(ip);
         if (i != setBanned.end())
         {
-            int64 t = (*i).second;
+            int64_t t = (*i).second;
             if (GetTime() < t)
                 fResult = true;
         }
@@ -539,30 +528,51 @@ bool CNode::Misbehaving(int howmuch)
 {
     if (addr.IsLocal())
     {
-        printf("Warning: local node %s misbehaving\n", addr.ToString().c_str());
+        printf("Warning: Local node %s misbehaving (delta: %d)!\n", addrName.c_str(), howmuch);
         return false;
     }
 
     nMisbehavior += howmuch;
-    if (nMisbehavior >= GetArg("-banscore", 100))
+    if (nMisbehavior >= GetArgInt("-banscore", 100))
     {
-        int64 banTime = GetTime()+GetArg("-bantime", 60*60*24);  // Default 24-hour ban
-        CRITICAL_BLOCK(cs_setBanned)
+        int64_t banTime = GetTime()+GetArg("-bantime", nOneDay);  // Default 24-hour ban
+        printf("Misbehaving: %s (%d -> %d) DISCONNECTING\n", addr.ToString().c_str(), nMisbehavior-howmuch, nMisbehavior);
+        {
+            LOCK(cs_setBanned);
             if (setBanned[addr] < banTime)
                 setBanned[addr] = banTime;
+        }
         CloseSocketDisconnect();
-        printf("Disconnected %s for misbehavior (score=%d)\n", addr.ToString().c_str(), nMisbehavior);
         return true;
-    }
+    } else
+        printf("Misbehaving: %s (%d -> %d)\n", addr.ToString().c_str(), nMisbehavior-howmuch, nMisbehavior);
     return false;
 }
 
+#undef X
+#define X(name) stats.name = name
+void CNode::copyStats(CNodeStats &stats)
+{
+    X(nServices);
+    X(nLastSend);
+    X(nLastRecv);
+    X(nTimeConnected);
+    X(addrName);
+    X(nVersion);
+    X(strSubVer);
+    X(fInbound);
+    X(nReleaseTime);
+    X(nStartingHeight);
+    X(nMisbehavior);
+    X(nSendBytes);
+    X(nRecvBytes);
+    stats.fSyncNode = (this == pnodeSync);
+}
+#undef X
 
-
-
-
-
-
+void Release(CNode* node) {
+    node->Release();
+}
 
 
 
@@ -570,7 +580,9 @@ bool CNode::Misbehaving(int howmuch)
 
 void ThreadSocketHandler(void* parg)
 {
-    IMPLEMENT_RANDOMIZE_STACK(ThreadSocketHandler(parg));
+    // Make this thread recognisable as the networking thread
+    RenameThread("novacoin-net");
+
     try
     {
         vnThreadsRunning[THREAD_SOCKETHANDLER]++;
@@ -584,22 +596,22 @@ void ThreadSocketHandler(void* parg)
         vnThreadsRunning[THREAD_SOCKETHANDLER]--;
         throw; // support pthread_cancel()
     }
-    printf("ThreadSocketHandler exiting\n");
+    printf("ThreadSocketHandler exited\n");
 }
 
+static list<CNode*> vNodesDisconnected;
+
 void ThreadSocketHandler2(void* parg)
 {
     printf("ThreadSocketHandler started\n");
-    list<CNode*> vNodesDisconnected;
-    int nPrevNodeCount = 0;
-
-    loop
+    size_t nPrevNodeCount = 0;
+    for ( ; ; )
     {
         //
         // Disconnect nodes
         //
-        CRITICAL_BLOCK(cs_vNodes)
         {
+            LOCK(cs_vNodes);
             // Disconnect unused nodes
             vector<CNode*> vNodesCopy = vNodes;
             BOOST_FOREACH(CNode* pnode, vNodesCopy)
@@ -610,6 +622,9 @@ void ThreadSocketHandler2(void* parg)
                     // remove from vNodes
                     vNodes.erase(remove(vNodes.begin(), vNodes.end(), pnode), vNodes.end());
 
+                    // release outbound grant (if any)
+                    pnode->grantOutbound.Release();
+
                     // close socket and cleanup
                     pnode->CloseSocketDisconnect();
                     pnode->Cleanup();
@@ -630,11 +645,23 @@ void ThreadSocketHandler2(void* parg)
                 if (pnode->GetRefCount() <= 0)
                 {
                     bool fDelete = false;
-                    TRY_CRITICAL_BLOCK(pnode->cs_vSend)
-                     TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
-                      TRY_CRITICAL_BLOCK(pnode->cs_mapRequests)
-                       TRY_CRITICAL_BLOCK(pnode->cs_inventory)
-                        fDelete = true;
+                    {
+                        TRY_LOCK(pnode->cs_vSend, lockSend);
+                        if (lockSend)
+                        {
+                            TRY_LOCK(pnode->cs_vRecv, lockRecv);
+                            if (lockRecv)
+                            {
+                                TRY_LOCK(pnode->cs_mapRequests, lockReq);
+                                if (lockReq)
+                                {
+                                    TRY_LOCK(pnode->cs_inventory, lockInv);
+                                    if (lockInv)
+                                        fDelete = true;
+                                }
+                            }
+                        }
+                    }
                     if (fDelete)
                     {
                         vNodesDisconnected.remove(pnode);
@@ -646,7 +673,7 @@ void ThreadSocketHandler2(void* parg)
         if (vNodes.size() != nPrevNodeCount)
         {
             nPrevNodeCount = vNodes.size();
-            MainFrameRepaint();
+            uiInterface.NotifyNumConnectionsChanged(vNodes.size());
         }
 
 
@@ -664,12 +691,15 @@ void ThreadSocketHandler2(void* parg)
         FD_ZERO(&fdsetSend);
         FD_ZERO(&fdsetError);
         SOCKET hSocketMax = 0;
+        bool have_fds = false;
 
-        if(hListenSocket != INVALID_SOCKET)
+        BOOST_FOREACH(SOCKET hListenSocket, vhListenSocket) {
             FD_SET(hListenSocket, &fdsetRecv);
-        hSocketMax = max(hSocketMax, hListenSocket);
-        CRITICAL_BLOCK(cs_vNodes)
+            hSocketMax = max(hSocketMax, hListenSocket);
+            have_fds = true;
+        }
         {
+            LOCK(cs_vNodes);
             BOOST_FOREACH(CNode* pnode, vNodes)
             {
                 if (pnode->hSocket == INVALID_SOCKET)
@@ -677,22 +707,26 @@ void ThreadSocketHandler2(void* parg)
                 FD_SET(pnode->hSocket, &fdsetRecv);
                 FD_SET(pnode->hSocket, &fdsetError);
                 hSocketMax = max(hSocketMax, pnode->hSocket);
-                TRY_CRITICAL_BLOCK(pnode->cs_vSend)
-                    if (!pnode->vSend.empty())
+                have_fds = true;
+                {
+                    TRY_LOCK(pnode->cs_vSend, lockSend);
+                    if (lockSend && !pnode->vSend.empty())
                         FD_SET(pnode->hSocket, &fdsetSend);
+                }
             }
         }
 
         vnThreadsRunning[THREAD_SOCKETHANDLER]--;
-        int nSelect = select(hSocketMax + 1, &fdsetRecv, &fdsetSend, &fdsetError, &timeout);
+        int nSelect = select(have_fds ? hSocketMax + 1 : 0,
+                             &fdsetRecv, &fdsetSend, &fdsetError, &timeout);
         vnThreadsRunning[THREAD_SOCKETHANDLER]++;
         if (fShutdown)
             return;
         if (nSelect == SOCKET_ERROR)
         {
-            int nErr = WSAGetLastError();
-            if (hSocketMax > -1)
+            if (have_fds)
             {
+                int nErr = WSAGetLastError();
                 printf("socket select error %d\n", nErr);
                 for (unsigned int i = 0; i <= hSocketMax; i++)
                     FD_SET(i, &fdsetRecv);
@@ -706,45 +740,58 @@ void ThreadSocketHandler2(void* parg)
         //
         // Accept new connections
         //
+        BOOST_FOREACH(SOCKET hListenSocket, vhListenSocket)
         if (hListenSocket != INVALID_SOCKET && FD_ISSET(hListenSocket, &fdsetRecv))
         {
-            struct sockaddr_in sockaddr;
+#ifdef USE_IPV6
+            struct sockaddr_storage sockaddr;
+#else
+            struct sockaddr sockaddr;
+#endif
             socklen_t len = sizeof(sockaddr);
             SOCKET hSocket = accept(hListenSocket, (struct sockaddr*)&sockaddr, &len);
             CAddress addr;
             int nInbound = 0;
 
             if (hSocket != INVALID_SOCKET)
-                addr = CAddress(sockaddr);
+                if (!addr.SetSockAddr((const struct sockaddr*)&sockaddr))
+                    printf("Warning: Unknown socket family\n");
 
-            CRITICAL_BLOCK(cs_vNodes)
+            {
+                LOCK(cs_vNodes);
                 BOOST_FOREACH(CNode* pnode, vNodes)
-                if (pnode->fInbound)
-                    nInbound++;
+                    if (pnode->fInbound)
+                        nInbound++;
+            }
 
             if (hSocket == INVALID_SOCKET)
             {
-                if (WSAGetLastError() != WSAEWOULDBLOCK)
-                    printf("socket error accept failed: %d\n", WSAGetLastError());
+                int nErr = WSAGetLastError();
+                if (nErr != WSAEWOULDBLOCK)
+                    printf("socket error accept failed: %d\n", nErr);
             }
-            else if (nInbound >= GetArg("-maxconnections", 125) - MAX_OUTBOUND_CONNECTIONS)
+            else if (nInbound >= GetArgInt("-maxconnections", 125) - MAX_OUTBOUND_CONNECTIONS)
             {
-                CRITICAL_BLOCK(cs_setservAddNodeAddresses)
+                {
+                    LOCK(cs_setservAddNodeAddresses);
                     if (!setservAddNodeAddresses.count(addr))
-                        closesocket(hSocket);
+                        CloseSocket(hSocket);
+                }
             }
             else if (CNode::IsBanned(addr))
             {
                 printf("connection from %s dropped (banned)\n", addr.ToString().c_str());
-                closesocket(hSocket);
+                CloseSocket(hSocket);
             }
             else
             {
                 printf("accepted connection %s\n", addr.ToString().c_str());
-                CNode* pnode = new CNode(hSocket, addr, true);
+                CNode* pnode = new CNode(hSocket, addr, "", true);
                 pnode->AddRef();
-                CRITICAL_BLOCK(cs_vNodes)
+                {
+                    LOCK(cs_vNodes);
                     vNodes.push_back(pnode);
+                }
             }
         }
 
@@ -753,8 +800,8 @@ void ThreadSocketHandler2(void* parg)
         // Service each socket
         //
         vector<CNode*> vNodesCopy;
-        CRITICAL_BLOCK(cs_vNodes)
         {
+            LOCK(cs_vNodes);
             vNodesCopy = vNodes;
             BOOST_FOREACH(CNode* pnode, vNodesCopy)
                 pnode->AddRef();
@@ -771,14 +818,15 @@ void ThreadSocketHandler2(void* parg)
                 continue;
             if (FD_ISSET(pnode->hSocket, &fdsetRecv) || FD_ISSET(pnode->hSocket, &fdsetError))
             {
-                TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
+                TRY_LOCK(pnode->cs_vRecv, lockRecv);
+                if (lockRecv)
                 {
                     CDataStream& vRecv = pnode->vRecv;
-                    unsigned int nPos = vRecv.size();
+                    uint64_t nPos = vRecv.size();
 
                     if (nPos > ReceiveBufferSize()) {
                         if (!pnode->fDisconnect)
-                            printf("socket recv flood control disconnect (%d bytes)\n", vRecv.size());
+                            printf("socket recv flood control disconnect (%" PRIszu " bytes)\n", vRecv.size());
                         pnode->CloseSocketDisconnect();
                     }
                     else {
@@ -790,6 +838,8 @@ void ThreadSocketHandler2(void* parg)
                             vRecv.resize(nPos + nBytes);
                             memcpy(&vRecv[nPos], pchBuf, nBytes);
                             pnode->nLastRecv = GetTime();
+                            pnode->nRecvBytes += nBytes;
+                            pnode->RecordBytesRecv(nBytes);
                         }
                         else if (nBytes == 0)
                         {
@@ -820,7 +870,8 @@ void ThreadSocketHandler2(void* parg)
                 continue;
             if (FD_ISSET(pnode->hSocket, &fdsetSend))
             {
-                TRY_CRITICAL_BLOCK(pnode->cs_vSend)
+                TRY_LOCK(pnode->cs_vSend, lockSend);
+                if (lockSend)
                 {
                     CDataStream& vSend = pnode->vSend;
                     if (!vSend.empty())
@@ -830,6 +881,8 @@ void ThreadSocketHandler2(void* parg)
                         {
                             vSend.erase(vSend.begin(), vSend.begin() + nBytes);
                             pnode->nLastSend = GetTime();
+                            pnode->nSendBytes += nBytes;
+                            pnode->RecordBytesSent(nBytes);
                         }
                         else if (nBytes < 0)
                         {
@@ -841,11 +894,6 @@ void ThreadSocketHandler2(void* parg)
                                 pnode->CloseSocketDisconnect();
                             }
                         }
-                        if (vSend.size() > SendBufferSize()) {
-                            if (!pnode->fDisconnect)
-                                printf("socket send flood control disconnect (%d bytes)\n", vSend.size());
-                            pnode->CloseSocketDisconnect();
-                        }
                     }
                 }
             }
@@ -874,193 +922,31 @@ void ThreadSocketHandler2(void* parg)
                 }
             }
         }
-        CRITICAL_BLOCK(cs_vNodes)
         {
-            BOOST_FOREACH(CNode* pnode, vNodesCopy)
-                pnode->Release();
+            LOCK(cs_vNodes);
+            for_each(vNodesCopy.begin(), vNodesCopy.end(), Release);
         }
 
         Sleep(10);
     }
 }
 
-
-
-
-
-
-
-
-
-#ifdef USE_UPNP
-void ThreadMapPort(void* parg)
-{
-    IMPLEMENT_RANDOMIZE_STACK(ThreadMapPort(parg));
-    try
-    {
-        vnThreadsRunning[THREAD_UPNP]++;
-        ThreadMapPort2(parg);
-        vnThreadsRunning[THREAD_UPNP]--;
-    }
-    catch (std::exception& e) {
-        vnThreadsRunning[THREAD_UPNP]--;
-        PrintException(&e, "ThreadMapPort()");
-    } catch (...) {
-        vnThreadsRunning[THREAD_UPNP]--;
-        PrintException(NULL, "ThreadMapPort()");
-    }
-    printf("ThreadMapPort exiting\n");
-}
-
-void ThreadMapPort2(void* parg)
-{
-    printf("ThreadMapPort started\n");
-
-    char port[6];
-    sprintf(port, "%d", GetListenPort());
-
-    const char * multicastif = 0;
-    const char * minissdpdpath = 0;
-    struct UPNPDev * devlist = 0;
-    char lanaddr[64];
-
-#ifndef UPNPDISCOVER_SUCCESS
-    /* miniupnpc 1.5 */
-    devlist = upnpDiscover(2000, multicastif, minissdpdpath, 0);
-#else
-    /* miniupnpc 1.6 */
-    int error = 0;
-    devlist = upnpDiscover(2000, multicastif, minissdpdpath, 0, 0, &error);
-#endif
-
-    struct UPNPUrls urls;
-    struct IGDdatas data;
-    int r;
-
-    r = UPNP_GetValidIGD(devlist, &urls, &data, lanaddr, sizeof(lanaddr));
-    if (r == 1)
-    {
-        if (!addrLocalHost.IsRoutable())
-        {
-            char externalIPAddress[40];
-            r = UPNP_GetExternalIPAddress(urls.controlURL, data.first.servicetype, externalIPAddress);
-            if(r != UPNPCOMMAND_SUCCESS)
-                printf("UPnP: GetExternalIPAddress() returned %d\n", r);
-            else
-            {
-                if(externalIPAddress[0])
-                {
-                    printf("UPnP: ExternalIPAddress = %s\n", externalIPAddress);
-                    CAddress addrExternalFromUPnP(CService(externalIPAddress, 0), nLocalServices);
-                    if (addrExternalFromUPnP.IsRoutable())
-                        addrLocalHost = addrExternalFromUPnP;
-                }
-                else
-                    printf("UPnP: GetExternalIPAddress failed.\n");
-            }
-        }
-
-        string strDesc = "Bitcoin " + FormatFullVersion();
-#ifndef UPNPDISCOVER_SUCCESS
-        /* miniupnpc 1.5 */
-        r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
-                            port, port, lanaddr, strDesc.c_str(), "TCP", 0);
-#else
-        /* miniupnpc 1.6 */
-        r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
-                            port, port, lanaddr, strDesc.c_str(), "TCP", 0, "0");
-#endif
-
-        if(r!=UPNPCOMMAND_SUCCESS)
-            printf("AddPortMapping(%s, %s, %s) failed with code %d (%s)\n",
-                port, port, lanaddr, r, strupnperror(r));
-        else
-            printf("UPnP Port Mapping successful.\n");
-        int i = 1;
-        loop {
-            if (fShutdown || !fUseUPnP)
-            {
-                r = UPNP_DeletePortMapping(urls.controlURL, data.first.servicetype, port, "TCP", 0);
-                printf("UPNP_DeletePortMapping() returned : %d\n", r);
-                freeUPNPDevlist(devlist); devlist = 0;
-                FreeUPNPUrls(&urls);
-                return;
-            }
-            if (i % 600 == 0) // Refresh every 20 minutes
-            {
-#ifndef UPNPDISCOVER_SUCCESS
-                /* miniupnpc 1.5 */
-                r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
-                                    port, port, lanaddr, strDesc.c_str(), "TCP", 0);
-#else
-                /* miniupnpc 1.6 */
-                r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
-                                    port, port, lanaddr, strDesc.c_str(), "TCP", 0, "0");
-#endif
-
-                if(r!=UPNPCOMMAND_SUCCESS)
-                    printf("AddPortMapping(%s, %s, %s) failed with code %d (%s)\n",
-                        port, port, lanaddr, r, strupnperror(r));
-                else
-                    printf("UPnP Port Mapping successful.\n");;
-            }
-            Sleep(2000);
-            i++;
-        }
-    } else {
-        printf("No valid UPnP IGDs found\n");
-        freeUPNPDevlist(devlist); devlist = 0;
-        if (r != 0)
-            FreeUPNPUrls(&urls);
-        loop {
-            if (fShutdown || !fUseUPnP)
-                return;
-            Sleep(2000);
-        }
-    }
-}
-
-void MapPort(bool fMapPort)
-{
-    if (fUseUPnP != fMapPort)
-    {
-        fUseUPnP = fMapPort;
-    }
-    if (fUseUPnP && vnThreadsRunning[THREAD_UPNP] < 1)
-    {
-        if (!CreateThread(ThreadMapPort, NULL))
-            printf("Error: ThreadMapPort(ThreadMapPort) failed\n");
-    }
-}
-#else
-void MapPort(bool /* unused fMapPort */)
-{
-    // Intentionally left blank.
-}
-#endif
-
-
-
-
-
-
-
-
-
 // DNS seeds
 // 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] = {
-    {"xf2.org", "bitseed.xf2.org"},
-    {"bluematt.me", "dnsseed.bluematt.me"},
-    {"bitcoin.sipa.be", "seed.bitcoin.sipa.be"},
-    {"dashjr.org", "dnsseed.bitcoin.dashjr.org"},
+    {"novacoin.karelia.pro", "dnsseed.novacoin.karelia.pro"},
+    {"novacoin.ru", "dnsseed.novacoin.ru"},
+    {"novacoin.ru", "testseed.novacoin.ru"},
+    {"novaco.in", "dnsseed.novaco.in"},
 };
 
 void ThreadDNSAddressSeed(void* parg)
 {
-    IMPLEMENT_RANDOMIZE_STACK(ThreadDNSAddressSeed(parg));
+    // Make this thread recognisable as the DNS seeding thread
+    RenameThread("novacoin-dnsseed");
+
     try
     {
         vnThreadsRunning[THREAD_DNSSEED]++;
@@ -1074,7 +960,7 @@ void ThreadDNSAddressSeed(void* parg)
         vnThreadsRunning[THREAD_DNSSEED]--;
         throw; // support pthread_cancel()
     }
-    printf("ThreadDNSAddressSeed exiting\n");
+    printf("ThreadDNSAddressSeed exited\n");
 }
 
 void ThreadDNSAddressSeed2(void* parg)
@@ -1087,20 +973,23 @@ void ThreadDNSAddressSeed2(void* parg)
         printf("Loading addresses from DNS seeds (could take a while)\n");
 
         for (unsigned int seed_idx = 0; seed_idx < ARRAYLEN(strDNSSeed); seed_idx++) {
-            vector<CNetAddr> vaddr;
-            vector<CAddress> vAdd;
-            if (LookupHost(strDNSSeed[seed_idx][1], vaddr))
-            {
-                BOOST_FOREACH(CNetAddr& ip, vaddr)
+            if (HaveNameProxy()) {
+                AddOneShot(strDNSSeed[seed_idx][1]);
+            } else {
+                vector<CNetAddr> vaddr;
+                vector<CAddress> vAdd;
+                if (LookupHost(strDNSSeed[seed_idx][1], vaddr))
                 {
-                    int nOneDay = 24*3600;
-                    CAddress addr = CAddress(CService(ip, GetDefaultPort()));
-                    addr.nTime = GetTime() - 3*nOneDay - GetRand(4*nOneDay); // use a random age between 3 and 7 days old
-                    vAdd.push_back(addr);
-                    found++;
+                    BOOST_FOREACH(CNetAddr& ip, vaddr)
+                    {
+                        CAddress addr = CAddress(CService(ip, GetDefaultPort()));
+                        addr.nTime = GetTime() - 3*nOneDay - GetRand(4*nOneDay); // use a random age between 3 and 7 days old
+                        vAdd.push_back(addr);
+                        found++;
+                    }
                 }
+                addrman.Add(vAdd, CNetAddr(strDNSSeed[seed_idx][0], true));
             }
-            addrman.Add(vAdd, CNetAddr(strDNSSeed[seed_idx][0], true));
         }
     }
 
@@ -1118,101 +1007,65 @@ void ThreadDNSAddressSeed2(void* parg)
 
 
 
-unsigned int pnSeed[] =
+uint32_t pnSeed[] =
+{
+    0xa52bf0da, 0x30aa43d8, 0x614488d5, 0x517b6fd5, 0xd4bf62d4, 0xb7d638d4, 0xbc12bcd1, 0xa2501bc6,
+    0xfde617c6, 0x3337b1c6, 0x1dcd71c3, 0x2c1544c1, 0xe05f6ac1, 0x852f63c0, 0x3e2363c0, 0x15f563c0,
+    0x430d63c0, 0x50d6a9c0, 0xf0a679c0, 0xefdeedbf, 0x7aaee8bc, 0x3a3dbbbc, 0xef218abc, 0x0bef78bc,
+    0x8baa3eb2, 0x2bf913b2, 0x24ed9fb2, 0xb42289b2, 0x718a09b0, 0xe9433eb0, 0x559425b0, 0xc97e1fb0,
+    0x18e1d4b0, 0x8f6cc1b0, 0xac3838ae, 0x86c0ffad, 0x6b0272a7, 0xa463f8a2, 0x6f17f3a2, 0xb3d6f3a2,
+    0x9cd8f997, 0xd513fb94, 0x39e64880, 0x3859dd6f, 0x0b08fe6d, 0xe601fe6d, 0xeb44a26d, 0xfe53186c,
+    0x203c2e68, 0x1c542868, 0x0caa8368, 0xb8748368, 0xccca4762, 0xc637555f, 0x638a545f, 0x59b2205f,
+    0x52568c5f, 0xba568c5f, 0x8a568c5f, 0x31b0f45e, 0x54a0f45e, 0x37d6f15e, 0xc520175e, 0x7620175e,
+    0xc310175e, 0x8e33b45e, 0x7abb5f5d, 0xd3014c5d, 0xa1e1485d, 0x9947645d, 0xfab8ff5c, 0xa979e65b,
+    0xa879e65b, 0x9f79e65b, 0x9fa3d25b, 0x112a925b, 0x7b92905b, 0x60647a5b, 0x1e389d5a, 0x851afa59,
+    0x0185ef59, 0x26549b59, 0x1c9efe57, 0xc54c1256, 0x1ad51955, 0x19d21955, 0x73c41955, 0x3f74ee55,
+    0x633eea55, 0x6883d655, 0xfb72c655, 0x5360a653, 0x17c1ea52, 0xc661c852, 0x1ecdc852, 0x006a9752,
+    0xf72d9252, 0x82650551, 0x36f1c851, 0x33f1c851, 0xd5c1864f, 0xb6bf1b4e, 0x96da184e, 0x40d0234d,
+    0x9a96ab4c, 0x8fc2a84c, 0xb5dbd048, 0xf4644447, 0x2d51af47, 0xa9625445, 0x83f05243, 0x89672941,
+    0x3a8bad3e, 0xf0a05436, 0x6ab7c936, 0x49971d32, 0xadd4482e, 0xcffd212e, 0x6730bc2e, 0x839aa12e,
+    0x68d9692e, 0xc7183b25, 0x6c47bb25, 0x2490bb25, 0xad651c1f, 0x048a861f, 0x6937811f, 0x064b2d05,
+    0x4d226805,
+};
+
+const char* pchTorSeed[] = 
 {
-    0x959bd347, 0xf8de42b2, 0x73bc0518, 0xea6edc50, 0x21b00a4d, 0xc725b43d, 0xd665464d, 0x1a2a770e,
-    0x27c93946, 0x65b2fa46, 0xb80ae255, 0x66b3b446, 0xb1877a3e, 0x6ee89e3e, 0xc3175b40, 0x2a01a83c,
-    0x95b1363a, 0xa079ad3d, 0xe6ca801f, 0x027f4f4a, 0x34f7f03a, 0xf790f04a, 0x16ca801f, 0x2f4d5e40,
-    0x3a4d5e40, 0xc43a322e, 0xc8159753, 0x14d4724c, 0x7919a118, 0xe0bdb34e, 0x68a16b2e, 0xff64b44d,
-    0x6099115b, 0x9b57b05b, 0x7bd1b4ad, 0xdf95944f, 0x29d2b73d, 0xafa8db79, 0xe247ba41, 0x24078348,
-    0xf722f03c, 0x33567ebc, 0xace64ed4, 0x984d3932, 0xb5f34e55, 0x27b7024d, 0x94579247, 0x8894042e,
-    0x9357d34c, 0x1063c24b, 0xcaa228b1, 0xa3c5a8b2, 0x5dc64857, 0xa2c23643, 0xa8369a54, 0x31203077,
-    0x00707c5c, 0x09fc0b3a, 0x272e9e2e, 0xf80f043e, 0x9449ca3e, 0x5512c33e, 0xd106b555, 0xe8024157,
-    0xe288ec29, 0xc79c5461, 0xafb63932, 0xdb02ab4b, 0x0e512777, 0x8a145a4c, 0xb201ff4f, 0x5e09314b,
-    0xcd9bfbcd, 0x1c023765, 0x4394e75c, 0xa728bd4d, 0x65331552, 0xa98420b1, 0x89ecf559, 0x6e80801f,
-    0xf404f118, 0xefd62b51, 0x05918346, 0x9b186d5f, 0xacabab46, 0xf912e255, 0xc188ea62, 0xcc55734e,
-    0xc668064d, 0xd77a4558, 0x46201c55, 0xf17dfc80, 0xf7142f2e, 0x87bfb718, 0x8aa54fb2, 0xc451d518,
-    0xc4ae8831, 0x8dd44d55, 0x5bbd206c, 0x64536b5d, 0x5c667e60, 0x3b064242, 0xfe963a42, 0xa28e6dc8,
-    0xe8a9604a, 0xc989464e, 0xd124a659, 0x50065140, 0xa44dfe5e, 0x1079e655, 0x3fb986d5, 0x47895b18,
-    0x7d3ce4ad, 0x4561ba50, 0x296eec62, 0x255b41ad, 0xaed35ec9, 0x55556f12, 0xc7d3154d, 0x3297b65d,
-    0x8930121f, 0xabf42e4e, 0x4a29e044, 0x1212685d, 0x676c1e40, 0xce009744, 0x383a8948, 0xa2dbd0ad,
-    0xecc2564d, 0x07dbc252, 0x887ee24b, 0x5171644c, 0x6bb798c1, 0x847f495d, 0x4cbb7145, 0x3bb81c32,
-    0x45eb262e, 0xc8015a4e, 0x250a361b, 0xf694f946, 0xd64a183e, 0xd4f1dd59, 0x8f20ffd4, 0x51d9e55c,
-    0x09521763, 0x5e02002e, 0x32c8074d, 0xe685762e, 0x8290b0bc, 0x762a922e, 0xfc5ee754, 0x83a24829,
-    0x775b224d, 0x6295bb4d, 0x38ec0555, 0xbffbba50, 0xe5560260, 0x86b16a7c, 0xd372234e, 0x49a3c24b,
-    0x2f6a171f, 0x4d75ed60, 0xae94115b, 0xcb543744, 0x63080c59, 0x3f9c724c, 0xc977ce18, 0x532efb18,
-    0x69dc3b2e, 0x5f94d929, 0x1732bb4d, 0x9c814b4d, 0xe6b3762e, 0xc024f662, 0x8face35b, 0x6b5b044d,
-    0x798c7b57, 0x79a6b44c, 0x067d3057, 0xf9e94e5f, 0x91cbe15b, 0x71405eb2, 0x2662234e, 0xcbcc4a6d,
-    0xbf69d54b, 0xa79b4e55, 0xec6d3e51, 0x7c0b3c02, 0x60f83653, 0x24c1e15c, 0x1110b62e, 0x10350f59,
-    0xa56f1d55, 0x3509e7a9, 0xeb128354, 0x14268e2e, 0x934e28bc, 0x8e32692e, 0x8331a21f, 0x3e633932,
-    0xc812b12e, 0xc684bf2e, 0x80112d2e, 0xe0ddc96c, 0xc630ca4a, 0x5c09b3b2, 0x0b580518, 0xc8e9d54b,
-    0xd169aa43, 0x17d0d655, 0x1d029963, 0x7ff87559, 0xcb701f1f, 0x6fa3e85d, 0xe45e9a54, 0xf05d1802,
-    0x44d03b2e, 0x837b692e, 0xccd4354e, 0x3d6da13c, 0x3423084d, 0xf707c34a, 0x55f6db3a, 0xad26e442,
-    0x6233a21f, 0x09e80e59, 0x8caeb54d, 0xbe870941, 0xb407d20e, 0x20b51018, 0x56fb152e, 0x460d2a4e,
-    0xbb9a2946, 0x560eb12e, 0xed83dd29, 0xd6724f53, 0xa50aafb8, 0x451346d9, 0x88348e2e, 0x7312fead,
-    0x8ecaf96f, 0x1bda4e5f, 0xf1671e40, 0x3c8c3e3b, 0x4716324d, 0xdde24ede, 0xf98cd17d, 0xa91d4644,
-    0x28124eb2, 0x147d5129, 0xd022042e, 0x61733d3b, 0xad0d5e02, 0x8ce2932e, 0xe5c18502, 0x549c1e32,
-    0x9685801f, 0x86e217ad, 0xd948214b, 0x4110f462, 0x3a2e894e, 0xbd35492e, 0x87e0d558, 0x64b8ef7d,
-    0x7c3eb962, 0x72a84b3e, 0x7cd667c9, 0x28370a2e, 0x4bc60e7b, 0x6fc1ec60, 0x14a6983f, 0x86739a4b,
-    0x46954e5f, 0x32e2e15c, 0x2e9326cf, 0xe5801c5e, 0x379607b2, 0x32151145, 0xf0e39744, 0xacb54c55,
-    0xa37dfb60, 0x83b55cc9, 0x388f7ca5, 0x15034f5f, 0x3e94965b, 0x68e0ffad, 0x35280f59, 0x8fe190cf,
-    0x7c6ba5b2, 0xa5e9db43, 0x4ee1fc60, 0xd9d94e5f, 0x04040677, 0x0ea9b35e, 0x5961f14f, 0x67fda063,
-    0xa48a5a31, 0xc6524e55, 0x283d325e, 0x3f37515f, 0x96b94b3e, 0xacce620e, 0x6481cc5b, 0xa4a06d4b,
-    0x9e95d2d9, 0xe40c03d5, 0xc2f4514b, 0xb79aad44, 0xf64be843, 0xb2064070, 0xfca00455, 0x429dfa4e,
-    0x2323f173, 0xeda4185e, 0xabd5227d, 0x9efd4d58, 0xb1104758, 0x4811e955, 0xbd9ab355, 0xe921f44b,
-    0x9f166dce, 0x09e279b2, 0xe0c9ac7b, 0x7901a5ad, 0xa145d4b0, 0x79104671, 0xec31e35a, 0x4fe0b555,
-    0xc7d9cbad, 0xad057f55, 0xe94cc759, 0x7fe0b043, 0xe4529f2e, 0x0d4dd4b2, 0x9f11a54d, 0x031e2e4e,
-    0xe6014f5f, 0x11d1ca6c, 0x26bd7f61, 0xeb86854f, 0x4d347b57, 0x116bbe2e, 0xdba7234e, 0x7bcbfd2e,
-    0x174dd4b2, 0x6686762e, 0xb089ba50, 0xc6258246, 0x087e767b, 0xc4a8cb4a, 0x595dba50, 0x7f0ae502,
-    0x7b1dbd5a, 0xa0603492, 0x57d1af4b, 0x9e21ffd4, 0x6393064d, 0x7407376e, 0xe484762e, 0x122a4e53,
-    0x4a37aa43, 0x3888a6be, 0xee77864e, 0x039c8dd5, 0x688d89af, 0x0e988f62, 0x08218246, 0xfc2f8246,
-    0xd1d97040, 0xd64cd4b2, 0x5ae4a6b8, 0x7d0de9bc, 0x8d304d61, 0x06c5c672, 0xa4c8bd4d, 0xe0fd373b,
-    0x575ebe4d, 0x72d26277, 0x55570f55, 0x77b154d9, 0xe214293a, 0xfc740f4b, 0xfe3f6a57, 0xa9c55f02,
-    0xae4054db, 0x2394d918, 0xb511b24a, 0xb8741ab2, 0x0758e65e, 0xc7b5795b, 0xb0a30a4c, 0xaf7f170c,
-    0xf3b4762e, 0x8179576d, 0x738a1581, 0x4b95b64c, 0x9829b618, 0x1bea932e, 0x7bdeaa4b, 0xcb5e0281,
-    0x65618f54, 0x0658474b, 0x27066acf, 0x40556d65, 0x7d204d53, 0xf28bc244, 0xdce23455, 0xadc0ff54,
-    0x3863c948, 0xcee34e5f, 0xdeb85e02, 0x2ed17a61, 0x6a7b094d, 0x7f0cfc40, 0x59603f54, 0x3220afbc,
-    0xb5dfd962, 0x125d21c0, 0x13f8d243, 0xacfefb4e, 0x86c2c147, 0x3d8bbd59, 0xbd02a21f, 0x2593042e,
-    0xc6a17a7c, 0x28925861, 0xb487ed44, 0xb5f4fd6d, 0x90c28a45, 0x5a14f74d, 0x43d71b4c, 0x728ebb5d,
-    0x885bf950, 0x08134dd0, 0x38ec046e, 0xc575684b, 0x50082d2e, 0xa2f47757, 0x270f86ae, 0xf3ff6462,
-    0x10ed3f4e, 0x4b58d462, 0xe01ce23e, 0x8c5b092e, 0x63e52f4e, 0x22c1e85d, 0xa908f54e, 0x8591624f,
-    0x2c0fb94e, 0xa280ba3c, 0xb6f41b4c, 0x24f9aa47, 0x27201647, 0x3a3ea6dc, 0xa14fc3be, 0x3c34bdd5,
-    0x5b8d4f5b, 0xaadeaf4b, 0xc71cab50, 0x15697a4c, 0x9a1a734c, 0x2a037d81, 0x2590bd59, 0x48ec2741,
-    0x53489c5b, 0x7f00314b, 0x2170d362, 0xf2e92542, 0x42c10b44, 0x98f0f118, 0x883a3456, 0x099a932e,
-    0xea38f7bc, 0x644e9247, 0xbb61b62e, 0x30e0863d, 0x5f51be54, 0x207215c7, 0x5f306c45, 0xaa7f3932,
-    0x98da7d45, 0x4e339b59, 0x2e411581, 0xa808f618, 0xad2c0c59, 0x54476741, 0x09e99fd1, 0x5db8f752,
-    0xc16df8bd, 0x1dd4b44f, 0x106edf2e, 0x9e15c180, 0x2ad6b56f, 0x633a5332, 0xff33787c, 0x077cb545,
-    0x6610be6d, 0x75aad2c4, 0x72fb4d5b, 0xe81e0f59, 0x576f6332, 0x47333373, 0x351ed783, 0x2d90fb50,
-    0x8d5e0f6c, 0x5b27a552, 0xdb293ebb, 0xe55ef950, 0x4b133ad8, 0x75df975a, 0x7b6a8740, 0xa899464b,
-    0xfab15161, 0x10f8b64d, 0xd055ea4d, 0xee8e146b, 0x4b14afb8, 0x4bc1c44a, 0x9b961dcc, 0xd111ff43,
-    0xfca0b745, 0xc800e412, 0x0afad9d1, 0xf751c350, 0xf9f0cccf, 0xa290a545, 0x8ef13763, 0x7ec70d59,
-    0x2b066acf, 0x65496c45, 0xade02c1b, 0xae6eb077, 0x92c1e65b, 0xc064e6a9, 0xc649e56d, 0x5287a243,
-    0x36de4f5b, 0x5b1df6ad, 0x65c39a59, 0xdba805b2, 0x20067aa8, 0x6457e56d, 0x3cee26cf, 0xfd3ff26d,
-    0x04f86d4a, 0x06b8e048, 0xa93bcd5c, 0x91135852, 0xbe90a643, 0x8fa0094d, 0x06d8215f, 0x2677094d,
-    0xd735685c, 0x164a00c9, 0x5209ac5f, 0xa9564c5c, 0x3b504f5f, 0xcc826bd0, 0x4615042e, 0x5fe13b4a,
-    0x8c81b86d, 0x879ab68c, 0x1de564b8, 0x434487d8, 0x2dcb1b63, 0x82ab524a, 0xb0676abb, 0xa13d9c62,
-    0xdbb5b86d, 0x5b7f4b59, 0xaddfb44d, 0xad773532, 0x3997054c, 0x72cebd89, 0xb194544c, 0xc5b8046e,
-    0x6e1adeb2, 0xaa5abb51, 0xefb54b44, 0x15efc54f, 0xe9f1bc4d, 0x5f401b6c, 0x97f018ad, 0xc82f9252,
-    0x2cdc762e, 0x8e52e56d, 0x1827175e, 0x9b7d7d80, 0xb2ad6845, 0x51065140, 0x71180a18, 0x5b27006c,
-    0x0621e255, 0x721cbe58, 0x670c0cb8, 0xf8bd715d, 0xe0bdc5d9, 0xed843501, 0x4b84554d, 0x7f1a18bc,
-    0x53bcaf47, 0x5729d35f, 0xf0dda246, 0x22382bd0, 0x4d641fb0, 0x316afcde, 0x50a22f1f, 0x73608046,
-    0xc461d84a, 0xb2dbe247,
+    "seedp4knqnoei57u.onion",
+    "seedr3hhlepyi7fd.onion",
+    "seed3uuomkclbiz4.onion",
+    "seedeh7qck3ouff5.onion",
+    "5rg3vq4jagckeckf.onion",
+    "seedt3sraf53ajiy.onion",
+    "seedg4qyccsg42oq.onion",
+    "novaqrtoywpg7jly.onion",
+    "seed3d5wolqbgrcb.onion",
+    "seed24u5dwph3qw4.onion",
+    "mj26ulzbs2oskgym.onion",
+    "eqon4usunavt76m7.onion",
+    "seedd3aldwpslzl3.onion"
 };
 
 void DumpAddresses()
 {
+    int64_t nStart = GetTimeMillis();
+
     CAddrDB adb;
-    adb.WriteAddrman(addrman);
+    adb.Write(addrman);
+
+    printf("Flushed %d addresses to peers.dat  %" PRId64 "ms\n",
+           addrman.size(), GetTimeMillis() - nStart);
 }
 
 void ThreadDumpAddress2(void* parg)
 {
+    printf("ThreadDumpAddress started\n");
+
     vnThreadsRunning[THREAD_DUMPADDRESS]++;
     while (!fShutdown)
     {
         DumpAddresses();
         vnThreadsRunning[THREAD_DUMPADDRESS]--;
-        Sleep(100000);
+        Sleep(600000);
         vnThreadsRunning[THREAD_DUMPADDRESS]++;
     }
     vnThreadsRunning[THREAD_DUMPADDRESS]--;
@@ -1220,7 +1073,9 @@ void ThreadDumpAddress2(void* parg)
 
 void ThreadDumpAddress(void* parg)
 {
-    IMPLEMENT_RANDOMIZE_STACK(ThreadDumpAddress(parg));
+    // Make this thread recognisable as the address dumping thread
+    RenameThread("novacoin-adrdump");
+
     try
     {
         ThreadDumpAddress2(parg);
@@ -1228,12 +1083,14 @@ void ThreadDumpAddress(void* parg)
     catch (std::exception& e) {
         PrintException(&e, "ThreadDumpAddress()");
     }
-    printf("ThreadDumpAddress exiting\n");
+    printf("ThreadDumpAddress exited\n");
 }
 
 void ThreadOpenConnections(void* parg)
 {
-    IMPLEMENT_RANDOMIZE_STACK(ThreadOpenConnections(parg));
+    // Make this thread recognisable as the connection opening thread
+    RenameThread("novacoin-opencon");
+
     try
     {
         vnThreadsRunning[THREAD_OPENCONNECTIONS]++;
@@ -1247,7 +1104,25 @@ void ThreadOpenConnections(void* parg)
         vnThreadsRunning[THREAD_OPENCONNECTIONS]--;
         PrintException(NULL, "ThreadOpenConnections()");
     }
-    printf("ThreadOpenConnections exiting\n");
+    printf("ThreadOpenConnections exited\n");
+}
+
+void static ProcessOneShot()
+{
+    string strDest;
+    {
+        LOCK(cs_vOneShots);
+        if (vOneShots.empty())
+            return;
+        strDest = vOneShots.front();
+        vOneShots.pop_front();
+    }
+    CAddress addr;
+    CSemaphoreGrant grant(*semOutbound, true);
+    if (grant) {
+        if (!OpenNetworkConnection(addr, &grant, strDest.c_str(), true))
+            AddOneShot(strDest);
+    }
 }
 
 void ThreadOpenConnections2(void* parg)
@@ -1255,15 +1130,15 @@ void ThreadOpenConnections2(void* parg)
     printf("ThreadOpenConnections started\n");
 
     // Connect to specific addresses
-    if (mapArgs.count("-connect"))
+    if (mapArgs.count("-connect") && mapMultiArgs["-connect"].size() > 0)
     {
-        for (int64 nLoop = 0;; nLoop++)
+        for (int64_t nLoop = 0;; nLoop++)
         {
+            ProcessOneShot();
             BOOST_FOREACH(string strAddr, mapMultiArgs["-connect"])
             {
-                CAddress addr(CService(strAddr, GetDefaultPort(), fAllowDNS));
-                if (addr.IsValid())
-                    OpenNetworkConnection(addr);
+                CAddress addr;
+                OpenNetworkConnection(addr, NULL, strAddr.c_str());
                 for (int i = 0; i < 10 && i < nLoop; i++)
                 {
                     Sleep(500);
@@ -1271,14 +1146,15 @@ void ThreadOpenConnections2(void* parg)
                         return;
                 }
             }
+            Sleep(500);
         }
     }
 
     // Initiate network connections
-    int64 nStart = GetTime();
-    loop
+    int64_t nStart = GetTime();
+    for ( ; ; )
     {
-        int nOutbound = 0;
+        ProcessOneShot();
 
         vnThreadsRunning[THREAD_OPENCONNECTIONS]--;
         Sleep(500);
@@ -1286,28 +1162,15 @@ void ThreadOpenConnections2(void* parg)
         if (fShutdown)
             return;
 
-        // Limit outbound connections
-        loop
-        {
-            nOutbound = 0;
-            CRITICAL_BLOCK(cs_vNodes)
-                BOOST_FOREACH(CNode* pnode, vNodes)
-                    if (!pnode->fInbound)
-                        nOutbound++;
-            int nMaxOutboundConnections = MAX_OUTBOUND_CONNECTIONS;
-            nMaxOutboundConnections = min(nMaxOutboundConnections, (int)GetArg("-maxconnections", 125));
-            if (nOutbound < nMaxOutboundConnections)
-                break;
-            vnThreadsRunning[THREAD_OPENCONNECTIONS]--;
-            Sleep(2000);
-            vnThreadsRunning[THREAD_OPENCONNECTIONS]++;
-            if (fShutdown)
-                return;
-        }
+
+        vnThreadsRunning[THREAD_OPENCONNECTIONS]--;
+        CSemaphoreGrant grant(*semOutbound);
+        vnThreadsRunning[THREAD_OPENCONNECTIONS]++;
+        if (fShutdown)
+            return;
 
         // Add seed nodes if IRC isn't working
-        bool fTOR = (fUseProxy && addrProxy.GetPort() == 9050);
-        if (addrman.size()==0 && (GetTime() - nStart > 60 || fTOR) && !fTestNet)
+        if (!IsLimited(NET_IPV4) && addrman.size()==0 && (GetTime() - nStart > 60) && !fTestNet)
         {
             std::vector<CAddress> vAdd;
             for (unsigned int i = 0; i < ARRAYLEN(pnSeed); i++)
@@ -1316,7 +1179,6 @@ void ThreadOpenConnections2(void* parg)
                 // it'll get a pile of addresses with newer timestamps.
                 // Seed nodes are given a random 'last seen time' of between one and two
                 // weeks ago.
-                const int64 nOneWeek = 7*24*60*60;
                 struct in_addr ip;
                 memcpy(&ip, &pnSeed[i], sizeof(ip));
                 CAddress addr(CService(ip, GetDefaultPort()));
@@ -1326,31 +1188,59 @@ void ThreadOpenConnections2(void* parg)
             addrman.Add(vAdd, CNetAddr("127.0.0.1"));
         }
 
+        // Add Tor nodes if we have connection with onion router
+        if (mapArgs.count("-tor"))
+        {
+            std::vector<CAddress> vAdd;
+            for (unsigned int i = 0; i < ARRAYLEN(pchTorSeed); i++)
+            {
+                CAddress addr(CService(pchTorSeed[i], GetDefaultPort()));
+                addr.nTime = GetTime()-GetRand(nOneWeek)-nOneWeek;
+                vAdd.push_back(addr);
+            }
+            addrman.Add(vAdd, CNetAddr("dummyaddress.onion"));
+        }
+
         //
         // Choose an address to connect to based on most recently seen
         //
         CAddress addrConnect;
 
-        // Only connect to one address per a.b.?.? range.
+        // Only connect out to one peer per network group (/16 for IPv4).
         // Do this here so we don't have to critsect vNodes inside mapAddresses critsect.
+        int nOutbound = 0;
         set<vector<unsigned char> > setConnected;
-        CRITICAL_BLOCK(cs_vNodes)
-            BOOST_FOREACH(CNode* pnode, vNodes)
-                setConnected.insert(pnode->addr.GetGroup());
+        {
+            LOCK(cs_vNodes);
+            BOOST_FOREACH(CNode* pnode, vNodes) {
+                if (!pnode->fInbound) {
+                    setConnected.insert(pnode->addr.GetGroup());
+                    nOutbound++;
+                }
+            }
+        }
 
-        int64 nANow = GetAdjustedTime();
+        int64_t nANow = GetAdjustedTime();
 
         int nTries = 0;
-        loop
+        for ( ; ; )
         {
             // use an nUnkBias between 10 (no outgoing connections) and 90 (8 outgoing connections)
             CAddress addr = addrman.Select(10 + min(nOutbound,8)*10);
 
             // if we selected an invalid address, restart
-            if (!addr.IsIPv4() || !addr.IsValid() || setConnected.count(addr.GetGroup()) || addr == addrLocalHost)
+            if (!addr.IsValid() || setConnected.count(addr.GetGroup()) || IsLocal(addr))
                 break;
 
+            // If we didn't find an appropriate destination after trying 100 addresses fetched from addrman,
+            // stop this loop, and let the outer loop run again (which sleeps, adds seed nodes, recalculates
+            // already-connected network ranges, ...) before trying new addrman addresses.
             nTries++;
+            if (nTries > 100)
+                break;
+
+            if (IsLimited(addr))
+                continue;
 
             // only consider very recently tried nodes after 30 failed attempts
             if (nANow - addr.nLastTry < 600 && nTries < 30)
@@ -1365,13 +1255,15 @@ void ThreadOpenConnections2(void* parg)
         }
 
         if (addrConnect.IsValid())
-            OpenNetworkConnection(addrConnect);
+            OpenNetworkConnection(addrConnect, &grant);
     }
 }
 
 void ThreadOpenAddedConnections(void* parg)
 {
-    IMPLEMENT_RANDOMIZE_STACK(ThreadOpenAddedConnections(parg));
+    // Make this thread recognisable as the connection opening thread
+    RenameThread("novacoin-opencon");
+
     try
     {
         vnThreadsRunning[THREAD_ADDEDCONNECTIONS]++;
@@ -1385,46 +1277,87 @@ void ThreadOpenAddedConnections(void* parg)
         vnThreadsRunning[THREAD_ADDEDCONNECTIONS]--;
         PrintException(NULL, "ThreadOpenAddedConnections()");
     }
-    printf("ThreadOpenAddedConnections exiting\n");
+    printf("ThreadOpenAddedConnections exited\n");
 }
 
 void ThreadOpenAddedConnections2(void* parg)
 {
     printf("ThreadOpenAddedConnections started\n");
 
-    if (mapArgs.count("-addnode") == 0)
+    {
+        LOCK(cs_vAddedNodes);
+        vAddedNodes = mapMultiArgs["-addnode"];
+    }
+
+    if (HaveNameProxy()) {
+        while(!fShutdown) {
+            list<string> lAddresses(0);
+            {
+                LOCK(cs_vAddedNodes);
+                BOOST_FOREACH(string& strAddNode, vAddedNodes)
+                    lAddresses.push_back(strAddNode);
+            }
+            BOOST_FOREACH(string& strAddNode, lAddresses) {
+                CAddress addr;
+                CSemaphoreGrant grant(*semOutbound);
+                OpenNetworkConnection(addr, &grant, strAddNode.c_str());
+                Sleep(500);
+            }
+            vnThreadsRunning[THREAD_ADDEDCONNECTIONS]--;
+            Sleep(120000); // Retry every 2 minutes
+            vnThreadsRunning[THREAD_ADDEDCONNECTIONS]++;
+        }
         return;
+    }
 
-    vector<vector<CService> > vservAddressesToAdd(0);
-    BOOST_FOREACH(string& strAddNode, mapMultiArgs["-addnode"])
+    for (uint32_t i = 0; true; i++)
     {
-        vector<CService> vservNode(0);
-        if(Lookup(strAddNode.c_str(), vservNode, GetDefaultPort(), fAllowDNS, 0))
+        list<string> lAddresses(0);
         {
-            vservAddressesToAdd.push_back(vservNode);
-            CRITICAL_BLOCK(cs_setservAddNodeAddresses)
-                BOOST_FOREACH(CService& serv, vservNode)
-                    setservAddNodeAddresses.insert(serv);
+            LOCK(cs_vAddedNodes);
+            BOOST_FOREACH(string& strAddNode, vAddedNodes)
+                lAddresses.push_back(strAddNode);
+        }
+
+        list<vector<CService> > lservAddressesToAdd(0);
+        BOOST_FOREACH(string& strAddNode, lAddresses)
+        {
+            vector<CService> vservNode(0);
+            if (Lookup(strAddNode.c_str(), vservNode, GetDefaultPort(), fNameLookup, 0))
+            {
+                lservAddressesToAdd.push_back(vservNode);
+                {
+                    LOCK(cs_setservAddNodeAddresses);
+                    BOOST_FOREACH(CService& serv, vservNode)
+                        setservAddNodeAddresses.insert(serv);
+                }
+            }
         }
-    }
-    loop
-    {
-        vector<vector<CService> > vservConnectAddresses = vservAddressesToAdd;
         // Attempt to connect to each IP for each addnode entry until at least one is successful per addnode entry
-        // (keeping in mind that addnode entries can have many IPs if fAllowDNS)
-        CRITICAL_BLOCK(cs_vNodes)
+        // (keeping in mind that addnode entries can have many IPs if fNameLookup)
+        {
+            LOCK(cs_vNodes);
             BOOST_FOREACH(CNode* pnode, vNodes)
-                for (vector<vector<CService> >::iterator it = vservConnectAddresses.begin(); it != vservConnectAddresses.end(); it++)
+                for (list<vector<CService> >::iterator it = lservAddressesToAdd.begin(); it != lservAddressesToAdd.end(); it++)
+                {
                     BOOST_FOREACH(CService& addrNode, *(it))
                         if (pnode->addr == addrNode)
                         {
-                            it = vservConnectAddresses.erase(it);
-                            it--;
+                            it = lservAddressesToAdd.erase(it);
+                            if(it != lservAddressesToAdd.begin())
+                                it--;
                             break;
                         }
-        BOOST_FOREACH(vector<CService>& vserv, vservConnectAddresses)
+                    if (it == lservAddressesToAdd.end())
+                        break;
+                }
+        }
+        BOOST_FOREACH(vector<CService>& vserv, lservAddressesToAdd)
         {
-            OpenNetworkConnection(CAddress(*(vserv.begin())));
+            if (vserv.size() == 0)
+                continue;
+            CSemaphoreGrant grant(*semOutbound);
+            OpenNetworkConnection(CAddress(vserv[i % vserv.size()]), &grant);
             Sleep(500);
             if (fShutdown)
                 return;
@@ -1439,39 +1372,75 @@ void ThreadOpenAddedConnections2(void* parg)
     }
 }
 
-bool OpenNetworkConnection(const CAddress& addrConnect)
+// if successful, this moves the passed grant to the constructed node
+bool OpenNetworkConnection(const CAddress& addrConnect, CSemaphoreGrant *grantOutbound, const char *strDest, bool fOneShot)
 {
     //
     // Initiate outbound network connection
     //
     if (fShutdown)
         return false;
-    if ((CNetAddr)addrConnect == (CNetAddr)addrLocalHost || !addrConnect.IsIPv4() ||
-        FindNode((CNetAddr)addrConnect) || CNode::IsBanned(addrConnect))
+    if (!strDest)
+        if (IsLocal(addrConnect) ||
+            FindNode((CNetAddr)addrConnect) || CNode::IsBanned(addrConnect) ||
+            FindNode(addrConnect.ToStringIPPort().c_str()))
+            return false;
+    if (strDest && FindNode(strDest))
         return false;
 
     vnThreadsRunning[THREAD_OPENCONNECTIONS]--;
-    CNode* pnode = ConnectNode(addrConnect);
+    CNode* pnode = ConnectNode(addrConnect, strDest);
     vnThreadsRunning[THREAD_OPENCONNECTIONS]++;
     if (fShutdown)
         return false;
     if (!pnode)
         return false;
+    if (grantOutbound)
+        grantOutbound->MoveTo(pnode->grantOutbound);
     pnode->fNetworkNode = true;
+    if (fOneShot)
+        pnode->fOneShot = true;
 
     return true;
 }
 
+// for now, use a very simple selection metric: the node from which we received
+// most recently
+static int64_t NodeSyncScore(const CNode *pnode) {
+    return pnode->nLastRecv;
+}
 
-
-
-
-
-
+void static StartSync(const vector<CNode*> &vNodes) {
+    CNode *pnodeNewSync = NULL;
+    int64_t nBestScore = 0;
+
+    // Iterate over all nodes
+    BOOST_FOREACH(CNode* pnode, vNodes) {
+        // check preconditions for allowing a sync
+        if (!pnode->fClient && !pnode->fOneShot &&
+            !pnode->fDisconnect && pnode->fSuccessfullyConnected &&
+            (pnode->nStartingHeight > (nBestHeight - 144)) &&
+            (pnode->nVersion < NOBLKS_VERSION_START || pnode->nVersion >= NOBLKS_VERSION_END)) {
+            // if ok, compare node's score with the best so far
+            int64_t nScore = NodeSyncScore(pnode);
+            if (pnodeNewSync == NULL || nScore > nBestScore) {
+                pnodeNewSync = pnode;
+                nBestScore = nScore;
+            }
+        }
+    }
+    // if a new sync candidate was found, start sync!
+    if (pnodeNewSync) {
+        pnodeNewSync->fStartSync = true;
+        pnodeSync = pnodeNewSync;
+    }
+}
 
 void ThreadMessageHandler(void* parg)
 {
-    IMPLEMENT_RANDOMIZE_STACK(ThreadMessageHandler(parg));
+    // Make this thread recognisable as the message handling thread
+    RenameThread("novacoin-msghand");
+
     try
     {
         vnThreadsRunning[THREAD_MESSAGEHANDLER]++;
@@ -1485,7 +1454,7 @@ void ThreadMessageHandler(void* parg)
         vnThreadsRunning[THREAD_MESSAGEHANDLER]--;
         PrintException(NULL, "ThreadMessageHandler()");
     }
-    printf("ThreadMessageHandler exiting\n");
+    printf("ThreadMessageHandler exited\n");
 }
 
 void ThreadMessageHandler2(void* parg)
@@ -1494,14 +1463,21 @@ void ThreadMessageHandler2(void* parg)
     SetThreadPriority(THREAD_PRIORITY_BELOW_NORMAL);
     while (!fShutdown)
     {
+        bool fHaveSyncNode = false;
         vector<CNode*> vNodesCopy;
-        CRITICAL_BLOCK(cs_vNodes)
         {
+            LOCK(cs_vNodes);
             vNodesCopy = vNodes;
-            BOOST_FOREACH(CNode* pnode, vNodesCopy)
+            BOOST_FOREACH(CNode* pnode, vNodesCopy) {
                 pnode->AddRef();
+                if (pnode == pnodeSync)
+                    fHaveSyncNode = true;
+            }
         }
 
+        if (!fHaveSyncNode)
+            StartSync(vNodesCopy);
+
         // Poll the connected nodes for messages
         CNode* pnodeTrickle = NULL;
         if (!vNodesCopy.empty())
@@ -1509,22 +1485,27 @@ void ThreadMessageHandler2(void* parg)
         BOOST_FOREACH(CNode* pnode, vNodesCopy)
         {
             // Receive messages
-            TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
-                ProcessMessages(pnode);
+            {
+                TRY_LOCK(pnode->cs_vRecv, lockRecv);
+                if (lockRecv)
+                    ProcessMessages(pnode);
+            }
             if (fShutdown)
                 return;
 
             // Send messages
-            TRY_CRITICAL_BLOCK(pnode->cs_vSend)
-                SendMessages(pnode, pnode == pnodeTrickle);
+            {
+                TRY_LOCK(pnode->cs_vSend, lockSend);
+                if (lockSend)
+                    SendMessages(pnode, pnode == pnodeTrickle);
+            }
             if (fShutdown)
                 return;
         }
 
-        CRITICAL_BLOCK(cs_vNodes)
         {
-            BOOST_FOREACH(CNode* pnode, vNodesCopy)
-                pnode->Release();
+            LOCK(cs_vNodes);
+            for_each(vNodesCopy.begin(), vNodesCopy.end(), Release);
         }
 
         // Wait and allow messages to bunch up.
@@ -1533,7 +1514,7 @@ void ThreadMessageHandler2(void* parg)
         vnThreadsRunning[THREAD_MESSAGEHANDLER]--;
         Sleep(100);
         if (fRequestShutdown)
-            Shutdown(NULL);
+            StartShutdown();
         vnThreadsRunning[THREAD_MESSAGEHANDLER]++;
         if (fShutdown)
             return;
@@ -1545,26 +1526,26 @@ void ThreadMessageHandler2(void* parg)
 
 
 
-bool BindListenPort(string& strError)
+bool BindListenPort(const CService &addrBind, string& strError)
 {
     strError = "";
     int nOne = 1;
-    addrLocalHost.SetPort(GetListenPort());
 
-#ifdef WIN32
-    // Initialize Windows Sockets
-    WSADATA wsadata;
-    int ret = WSAStartup(MAKEWORD(2,2), &wsadata);
-    if (ret != NO_ERROR)
+    // Create socket for listening for incoming connections
+#ifdef USE_IPV6
+    struct sockaddr_storage sockaddr;
+#else
+    struct sockaddr sockaddr;
+#endif
+    socklen_t len = sizeof(sockaddr);
+    if (!addrBind.GetSockAddr((struct sockaddr*)&sockaddr, &len))
     {
-        strError = strprintf("Error: TCP/IP socket library failed to start (WSAStartup returned error %d)", ret);
+        strError = strprintf("Error: bind address family for %s not supported", addrBind.ToString().c_str());
         printf("%s\n", strError.c_str());
         return false;
     }
-#endif
 
-    // Create socket for listening for incoming connections
-    hListenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+    SOCKET hListenSocket = socket(((struct sockaddr*)&sockaddr)->sa_family, SOCK_STREAM, IPPROTO_TCP);
     if (hListenSocket == INVALID_SOCKET)
     {
         strError = strprintf("Error: Couldn't open socket for incoming connections (socket returned error %d)", WSAGetLastError());
@@ -1572,19 +1553,18 @@ bool BindListenPort(string& strError)
         return false;
     }
 
+#ifndef WIN32
 #ifdef SO_NOSIGPIPE
     // Different way of disabling SIGPIPE on BSD
     setsockopt(hListenSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&nOne, sizeof(int));
 #endif
-
-#ifndef WIN32
     // Allow binding if the port is still in TIME_WAIT state after
-    // the program was closed and restarted.  Not an issue on windows.
+    // the program was closed and restarted. Not an issue on windows!
     setsockopt(hListenSocket, SOL_SOCKET, SO_REUSEADDR, (void*)&nOne, sizeof(int));
 #endif
 
 #ifdef WIN32
-    // Set to nonblocking, incoming connections will also inherit this
+    // Set to non-blocking, incoming connections will also inherit this
     if (ioctlsocket(hListenSocket, FIONBIO, (u_long*)&nOne) == SOCKET_ERROR)
 #else
     if (fcntl(hListenSocket, F_SETFL, O_NONBLOCK) == SOCKET_ERROR)
@@ -1595,62 +1575,72 @@ bool BindListenPort(string& strError)
         return false;
     }
 
-    // The sockaddr_in structure specifies the address family,
-    // IP address, and port for the socket that is being bound
-    struct sockaddr_in sockaddr;
-    memset(&sockaddr, 0, sizeof(sockaddr));
-    sockaddr.sin_family = AF_INET;
-    sockaddr.sin_addr.s_addr = INADDR_ANY; // bind to all IPs on this computer
-    sockaddr.sin_port = htons(GetListenPort());
-    if (::bind(hListenSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR)
+#ifdef USE_IPV6
+    // some systems don't have IPV6_V6ONLY but are always v6only; others do have the option
+    // and enable it by default or not. Try to enable it, if possible.
+    if (addrBind.IsIPv6()) {
+#ifdef IPV6_V6ONLY
+#ifdef WIN32
+        setsockopt(hListenSocket, IPPROTO_IPV6, IPV6_V6ONLY, (const char*)&nOne, sizeof(int));
+#else
+        setsockopt(hListenSocket, IPPROTO_IPV6, IPV6_V6ONLY, (void*)&nOne, sizeof(int));
+#endif
+#endif
+#ifdef WIN32
+        int nProtLevel = PROTECTION_LEVEL_UNRESTRICTED;
+        setsockopt(hListenSocket, IPPROTO_IPV6, IPV6_PROTECTION_LEVEL, (const char*)&nProtLevel, sizeof(int));
+#endif
+    }
+#endif
+
+    if (::bind(hListenSocket, (struct sockaddr*)&sockaddr, len) == SOCKET_ERROR)
     {
         int nErr = WSAGetLastError();
         if (nErr == WSAEADDRINUSE)
-            strError = strprintf(_("Unable to bind to port %d on this computer.  Bitcoin is probably already running."), ntohs(sockaddr.sin_port));
+            strError = strprintf(_("Unable to bind to %s on this computer. NovaCoin is probably already running."), addrBind.ToString().c_str());
         else
-            strError = strprintf("Error: Unable to bind to port %d on this computer (bind returned error %d)", ntohs(sockaddr.sin_port), nErr);
+            strError = strprintf(_("Unable to bind to %s on this computer (bind returned error %d, %s)"), addrBind.ToString().c_str(), nErr, strerror(nErr));
         printf("%s\n", strError.c_str());
+        CloseSocket(hListenSocket);
         return false;
     }
-    printf("Bound to port %d\n", ntohs(sockaddr.sin_port));
+    printf("Bound to %s\n", addrBind.ToString().c_str());
 
     // Listen for incoming connections
     if (listen(hListenSocket, SOMAXCONN) == SOCKET_ERROR)
     {
         strError = strprintf("Error: Listening for incoming connections failed (listen returned error %d)", WSAGetLastError());
         printf("%s\n", strError.c_str());
+        CloseSocket(hListenSocket);
         return false;
     }
 
+    vhListenSocket.push_back(hListenSocket);
+
+    if (addrBind.IsRoutable() && fDiscover)
+        AddLocal(addrBind, LOCAL_BIND);
+
     return true;
 }
 
-void StartNode(void* parg)
+void static Discover()
 {
-#ifdef USE_UPNP
-#if USE_UPNP
-    fUseUPnP = GetBoolArg("-upnp", true);
-#else
-    fUseUPnP = GetBoolArg("-upnp", false);
-#endif
-#endif
-
-    if (pnodeLocalHost == NULL)
-        pnodeLocalHost = new CNode(INVALID_SOCKET, CAddress(CService("127.0.0.1", 0), nLocalServices));
+    if (!fDiscover)
+        return;
 
 #ifdef WIN32
-    // Get local host ip
+    // Get local host IP
     char pszHostName[1000] = "";
     if (gethostname(pszHostName, sizeof(pszHostName)) != SOCKET_ERROR)
     {
         vector<CNetAddr> vaddr;
         if (LookupHost(pszHostName, vaddr))
+        {
             BOOST_FOREACH (const CNetAddr &addr, vaddr)
-                if (!addr.IsLocal())
-                {
-                    addrLocalHost.SetIP(addr);
-                    break;
-                }
+            {
+                AddLocal(addr, LOCAL_IF);
+            }
+        }
     }
 #else
     // Get local host ip
@@ -1663,44 +1653,48 @@ void StartNode(void* parg)
             if ((ifa->ifa_flags & IFF_UP) == 0) continue;
             if (strcmp(ifa->ifa_name, "lo") == 0) continue;
             if (strcmp(ifa->ifa_name, "lo0") == 0) continue;
-            char pszIP[100];
             if (ifa->ifa_addr->sa_family == AF_INET)
             {
                 struct sockaddr_in* s4 = (struct sockaddr_in*)(ifa->ifa_addr);
-                if (inet_ntop(ifa->ifa_addr->sa_family, (void*)&(s4->sin_addr), pszIP, sizeof(pszIP)) != NULL)
-                    printf("ipv4 %s: %s\n", ifa->ifa_name, pszIP);
-
-                // Take the first IP that isn't loopback 127.x.x.x
-                CAddress addr(CService(s4->sin_addr, GetListenPort()), nLocalServices);
-                if (addr.IsValid() && !addr.IsLocal())
-                {
-                    addrLocalHost = addr;
-                    break;
-                }
+                CNetAddr addr(s4->sin_addr);
+                if (AddLocal(addr, LOCAL_IF))
+                    printf("IPv4 %s: %s\n", ifa->ifa_name, addr.ToString().c_str());
             }
+#ifdef USE_IPV6
             else if (ifa->ifa_addr->sa_family == AF_INET6)
             {
                 struct sockaddr_in6* s6 = (struct sockaddr_in6*)(ifa->ifa_addr);
-                if (inet_ntop(ifa->ifa_addr->sa_family, (void*)&(s6->sin6_addr), pszIP, sizeof(pszIP)) != NULL)
-                    printf("ipv6 %s: %s\n", ifa->ifa_name, pszIP);
+                CNetAddr addr(s6->sin6_addr);
+                if (AddLocal(addr, LOCAL_IF))
+                    printf("IPv6 %s: %s\n", ifa->ifa_name, addr.ToString().c_str());
             }
+#endif
         }
         freeifaddrs(myaddrs);
     }
 #endif
-    printf("addrLocalHost = %s\n", addrLocalHost.ToString().c_str());
 
-    if (fUseProxy || mapArgs.count("-connect") || fNoListen)
-    {
-        // Proxies can't take incoming connections
-        addrLocalHost.SetIP(CNetAddr("0.0.0.0"));
-        printf("addrLocalHost = %s\n", addrLocalHost.ToString().c_str());
-    }
-    else
-    {
-        CreateThread(ThreadGetMyExternalIP, NULL);
+    // Don't use external IPv4 discovery, when -onlynet="IPv6"
+    if (!IsLimited(NET_IPV4))
+        NewThread(ThreadGetMyExternalIP, NULL);
+}
+
+void StartNode(void* parg)
+{
+    // Make this thread recognisable as the startup thread
+    RenameThread("novacoin-start");
+
+    if (semOutbound == NULL) {
+        // initialize semaphore
+        int nMaxOutbound = min(MAX_OUTBOUND_CONNECTIONS, GetArgInt("-maxconnections", 125));
+        semOutbound = new CSemaphore(nMaxOutbound);
     }
 
+    if (pnodeLocalHost == NULL)
+        pnodeLocalHost = new CNode(INVALID_SOCKET, CAddress(CService("127.0.0.1", nPortZero), nLocalServices));
+
+    Discover();
+
     //
     // Start threads
     //
@@ -1708,39 +1702,46 @@ void StartNode(void* parg)
     if (!GetBoolArg("-dnsseed", true))
         printf("DNS seeding disabled\n");
     else
-        if (!CreateThread(ThreadDNSAddressSeed, NULL))
-            printf("Error: CreateThread(ThreadDNSAddressSeed) failed\n");
-
-    // Map ports with UPnP
-    if (fHaveUPnP)
-        MapPort(fUseUPnP);
+        if (!NewThread(ThreadDNSAddressSeed, NULL))
+            printf("Error: NewThread(ThreadDNSAddressSeed) failed\n");
 
     // Get addresses from IRC and advertise ours
-    if (!CreateThread(ThreadIRCSeed, NULL))
-        printf("Error: CreateThread(ThreadIRCSeed) failed\n");
+    if (!GetBoolArg("-irc", true))
+        printf("IRC seeding disabled\n");
+    else
+        if (!NewThread(ThreadIRCSeed, NULL))
+            printf("Error: NewThread(ThreadIRCSeed) failed\n");
 
     // Send and receive from sockets, accept connections
-    if (!CreateThread(ThreadSocketHandler, NULL))
-        printf("Error: CreateThread(ThreadSocketHandler) failed\n");
+    if (!NewThread(ThreadSocketHandler, NULL))
+        printf("Error: NewThread(ThreadSocketHandler) failed\n");
 
     // Initiate outbound connections from -addnode
-    if (!CreateThread(ThreadOpenAddedConnections, NULL))
-        printf("Error: CreateThread(ThreadOpenAddedConnections) failed\n");
+    if (!NewThread(ThreadOpenAddedConnections, NULL))
+        printf("Error: NewThread(ThreadOpenAddedConnections) failed\n");
 
     // Initiate outbound connections
-    if (!CreateThread(ThreadOpenConnections, NULL))
-        printf("Error: CreateThread(ThreadOpenConnections) failed\n");
+    if (!NewThread(ThreadOpenConnections, NULL))
+        printf("Error: NewThread(ThreadOpenConnections) failed\n");
 
     // Process messages
-    if (!CreateThread(ThreadMessageHandler, NULL))
-        printf("Error: CreateThread(ThreadMessageHandler) failed\n");
+    if (!NewThread(ThreadMessageHandler, NULL))
+        printf("Error: NewThread(ThreadMessageHandler) failed\n");
 
     // Dump network addresses
-    if (!CreateThread(ThreadDumpAddress, NULL))
-        printf("Error; CreateThread(ThreadDumpAddress) failed\n");
+    if (!NewThread(ThreadDumpAddress, NULL))
+        printf("Error; NewThread(ThreadDumpAddress) failed\n");
+
+    // Mine proof-of-stake blocks in the background
+    if (!NewThread(ThreadStakeMiner, pwalletMain))
+        printf("Error: NewThread(ThreadStakeMiner) failed\n");
+
+    // Trusted NTP server, it's localhost by default.
+    strTrustedUpstream = GetArg("-ntp", "localhost");
+
+    // Start periodical NTP sampling thread
+    NewThread(ThreadNtpSamples, NULL);
 
-    // Generate coins in the background
-    GenerateBitcoins(GetBoolArg("-gen", false), pwalletMain);
 }
 
 bool StopNode()
@@ -1748,8 +1749,15 @@ bool StopNode()
     printf("StopNode()\n");
     fShutdown = true;
     nTransactionsUpdated++;
-    int64 nStart = GetTime();
-    do
+    int64_t nStart = GetTime();
+    {
+        LOCK(cs_main);
+        ThreadScriptCheckQuit();
+    }
+    if (semOutbound)
+        for (int i=0; i<MAX_OUTBOUND_CONNECTIONS; i++)
+            semOutbound->post();
+    for ( ; ; )
     {
         int nThreadsRunning = 0;
         for (int n = 0; n < THREAD_MAX; n++)
@@ -1759,20 +1767,22 @@ bool StopNode()
         if (GetTime() - nStart > 20)
             break;
         Sleep(20);
-    } while(true);
+    };
     if (vnThreadsRunning[THREAD_SOCKETHANDLER] > 0) printf("ThreadSocketHandler still running\n");
     if (vnThreadsRunning[THREAD_OPENCONNECTIONS] > 0) printf("ThreadOpenConnections still running\n");
     if (vnThreadsRunning[THREAD_MESSAGEHANDLER] > 0) printf("ThreadMessageHandler still running\n");
-    if (vnThreadsRunning[THREAD_MINER] > 0) printf("ThreadBitcoinMiner still running\n");
-    if (vnThreadsRunning[THREAD_RPCSERVER] > 0) printf("ThreadRPCServer still running\n");
-    if (fHaveUPnP && vnThreadsRunning[THREAD_UPNP] > 0) printf("ThreadMapPort still running\n");
+    if (vnThreadsRunning[THREAD_RPCLISTENER] > 0) printf("ThreadRPCListener still running\n");
+    if (vnThreadsRunning[THREAD_RPCHANDLER] > 0) printf("ThreadsRPCServer still running\n");
     if (vnThreadsRunning[THREAD_DNSSEED] > 0) printf("ThreadDNSAddressSeed still running\n");
     if (vnThreadsRunning[THREAD_ADDEDCONNECTIONS] > 0) printf("ThreadOpenAddedConnections still running\n");
     if (vnThreadsRunning[THREAD_DUMPADDRESS] > 0) printf("ThreadDumpAddresses still running\n");
-    while (vnThreadsRunning[THREAD_MESSAGEHANDLER] > 0 || vnThreadsRunning[THREAD_RPCSERVER] > 0)
+    if (vnThreadsRunning[THREAD_MINTER] > 0) printf("ThreadStakeMinter still running\n");
+    if (vnThreadsRunning[THREAD_SCRIPTCHECK] > 0) printf("ThreadScriptCheck still running\n");
+    while (vnThreadsRunning[THREAD_MESSAGEHANDLER] > 0 || vnThreadsRunning[THREAD_RPCHANDLER] > 0 || vnThreadsRunning[THREAD_SCRIPTCHECK] > 0)
         Sleep(20);
     Sleep(50);
     DumpAddresses();
+
     return true;
 }
 
@@ -1787,10 +1797,23 @@ public:
         // Close sockets
         BOOST_FOREACH(CNode* pnode, vNodes)
             if (pnode->hSocket != INVALID_SOCKET)
-                closesocket(pnode->hSocket);
-        if (hListenSocket != INVALID_SOCKET)
-            if (closesocket(hListenSocket) == SOCKET_ERROR)
-                printf("closesocket(hListenSocket) failed with error %d\n", WSAGetLastError());
+                CloseSocket(pnode->hSocket);
+        BOOST_FOREACH(SOCKET hListenSocket, vhListenSocket)
+            if (hListenSocket != INVALID_SOCKET)
+                if (!CloseSocket(hListenSocket))
+                    printf("CloseSocket(hListenSocket) failed with error %d\n", WSAGetLastError());
+
+        // clean up some globals (to help leak detection)
+        BOOST_FOREACH(CNode *pnode, vNodes)
+            delete pnode;
+        BOOST_FOREACH(CNode *pnode, vNodesDisconnected)
+            delete pnode;
+        vNodes.clear();
+        vNodesDisconnected.clear();
+        delete semOutbound;
+        semOutbound = NULL;
+        delete pnodeLocalHost;
+        pnodeLocalHost = NULL;
 
 #ifdef WIN32
         // Shutdown Windows Sockets
@@ -1799,3 +1822,55 @@ public:
     }
 }
 instance_of_cnetcleanup;
+
+void RelayTransaction(const CTransaction& tx, const uint256& hash)
+{
+    CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
+    ss.reserve(10000);
+    ss << tx;
+    RelayTransaction(tx, hash, ss);
+}
+
+void RelayTransaction(const CTransaction& tx, const uint256& hash, const CDataStream& ss)
+{
+    CInv inv(MSG_TX, hash);
+    {
+        LOCK(cs_mapRelay);
+        // Expire old relay messages
+        while (!vRelayExpiration.empty() && vRelayExpiration.front().first < GetTime())
+        {
+            mapRelay.erase(vRelayExpiration.front().second);
+            vRelayExpiration.pop_front();
+        }
+
+        // Save original serialized message so newer versions are preserved
+        mapRelay.insert(std::make_pair(inv, ss));
+        vRelayExpiration.push_back(std::make_pair(GetTime() + 15 * 60, inv));
+    }
+
+    RelayInventory(inv);
+}
+
+void CNode::RecordBytesRecv(uint64_t bytes)
+{
+    LOCK(cs_totalBytesRecv);
+    nTotalBytesRecv += bytes;
+}
+
+void CNode::RecordBytesSent(uint64_t bytes)
+{
+    LOCK(cs_totalBytesSent);
+    nTotalBytesSent += bytes;
+}
+
+uint64_t CNode::GetTotalBytesRecv()
+{
+    LOCK(cs_totalBytesRecv);
+    return nTotalBytesRecv;
+}
+
+uint64_t CNode::GetTotalBytesSent()
+{
+    LOCK(cs_totalBytesSent);
+    return nTotalBytesSent;
+}