net: handle version push in InitializeNode

src/main.cpp

@@ -18,6 +18,7 @@
 #include "init.h"
 #include "merkleblock.h"
 #include "net.h"
+#include "netbase.h"
 #include "policy/fees.h"
 #include "policy/policy.h"
 #include "pow.h"
@@ -354,12 +355,37 @@ void UpdatePreferredDownload(CNode* node, CNodeState* state)
     nPreferredDownload += state->fPreferredDownload;
 }
 
-void InitializeNode(NodeId nodeid, const CNode *pnode) {
+void PushNodeVersion(CNode *pnode, CConnman& connman, int64_t nTime)
+{
+    ServiceFlags nLocalNodeServices = pnode->GetLocalServices();
+    uint64_t nonce = pnode->GetLocalNonce();
+    int nNodeStartingHeight = pnode->GetMyStartingHeight();
+    NodeId nodeid = pnode->GetId();
+    CAddress addr = pnode->addr;
+
+    CAddress addrYou = (addr.IsRoutable() && !IsProxy(addr) ? addr : CAddress(CService(), addr.nServices));
+    CAddress addrMe = CAddress(CService(), nLocalNodeServices);
+
+    connman.PushMessageWithVersion(pnode, INIT_PROTO_VERSION, NetMsgType::VERSION, PROTOCOL_VERSION, (uint64_t)nLocalNodeServices, nTime, addrYou, addrMe,
+            nonce, strSubVersion, nNodeStartingHeight, ::fRelayTxes);
+
+    if (fLogIPs)
+        LogPrint("net", "send version message: version %d, blocks=%d, us=%s, them=%s, peer=%d\n", PROTOCOL_VERSION, nNodeStartingHeight, addrMe.ToString(), addrYou.ToString(), nodeid);
+    else
+        LogPrint("net", "send version message: version %d, blocks=%d, us=%s, peer=%d\n", PROTOCOL_VERSION, nNodeStartingHeight, addrMe.ToString(), nodeid);
+}
+
+void InitializeNode(CNode *pnode, CConnman& connman) {
     CAddress addr = pnode->addr;
     std::string addrName = pnode->addrName;
+    NodeId nodeid = pnode->GetId();
+    {
         LOCK(cs_main);
         mapNodeState.emplace_hint(mapNodeState.end(), std::piecewise_construct, std::forward_as_tuple(nodeid), std::forward_as_tuple(addr, std::move(addrName)));
     }
+    if(!pnode->fInbound)
+        PushNodeVersion(pnode, connman, GetTime());
+}
 
 void FinalizeNode(NodeId nodeid, bool& fUpdateConnectionTime) {
     fUpdateConnectionTime = false;
@@ -5118,7 +5144,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
 
         // Be shy and don't send version until we hear
         if (pfrom->fInbound)
-            connman.PushVersion(pfrom, GetAdjustedTime());
+            PushNodeVersion(pfrom, connman, GetAdjustedTime());
 
         pfrom->fClient = !(pfrom->nServices & NODE_NETWORK);
 

src/net.cpp

@@ -393,21 +393,15 @@ CNode* CConnman::ConnectNode(CAddress addrConnect, const char *pszDest, bool fCo
         NodeId id = GetNewNodeId();
         uint64_t nonce = GetDeterministicRandomizer(RANDOMIZER_ID_LOCALHOSTNONCE).Write(id).Finalize();
         CNode* pnode = new CNode(id, nLocalServices, GetBestHeight(), hSocket, addrConnect, CalculateKeyedNetGroup(addrConnect), nonce, pszDest ? pszDest : "", false);
-
+        pnode->nServicesExpected = ServiceFlags(addrConnect.nServices & nRelevantServices);
-
+        pnode->nTimeConnected = GetTime();
-        PushVersion(pnode, GetTime());
-
-        GetNodeSignals().InitializeNode(pnode->GetId(), pnode);
         pnode->AddRef();
-
+        GetNodeSignals().InitializeNode(pnode, *this);
         {
             LOCK(cs_vNodes);
             vNodes.push_back(pnode);
         }
 
-        pnode->nServicesExpected = ServiceFlags(addrConnect.nServices & nRelevantServices);
-        pnode->nTimeConnected = GetTime();
-
         return pnode;
     } else if (!proxyConnectionFailed) {
         // If connecting to the node failed, and failure is not caused by a problem connecting to
@@ -418,24 +412,6 @@ CNode* CConnman::ConnectNode(CAddress addrConnect, const char *pszDest, bool fCo
     return NULL;
 }
 
-void CConnman::PushVersion(CNode* pnode, int64_t nTime)
-{
-    ServiceFlags nLocalNodeServices = pnode->GetLocalServices();
-    CAddress addrYou = (pnode->addr.IsRoutable() && !IsProxy(pnode->addr) ? pnode->addr : CAddress(CService(), pnode->addr.nServices));
-    CAddress addrMe = CAddress(CService(), nLocalNodeServices);
-    uint64_t nonce = pnode->GetLocalNonce();
-    int nNodeStartingHeight = pnode->nMyStartingHeight;
-    NodeId id = pnode->GetId();
-
-    PushMessageWithVersion(pnode, INIT_PROTO_VERSION, NetMsgType::VERSION, PROTOCOL_VERSION, (uint64_t)nLocalNodeServices, nTime, addrYou, addrMe,
-            nonce, strSubVersion, nNodeStartingHeight, ::fRelayTxes);
-
-    if (fLogIPs)
-        LogPrint("net", "send version message: version %d, blocks=%d, us=%s, them=%s, peer=%d\n", PROTOCOL_VERSION, nNodeStartingHeight, addrMe.ToString(), addrYou.ToString(), id);
-    else
-        LogPrint("net", "send version message: version %d, blocks=%d, us=%s, peer=%d\n", PROTOCOL_VERSION, nNodeStartingHeight, addrMe.ToString(), id);
-}
-
 void CConnman::DumpBanlist()
 {
     SweepBanned(); // clean unused entries (if bantime has expired)
@@ -1036,9 +1012,9 @@ void CConnman::AcceptConnection(const ListenSocket& hListenSocket) {
     uint64_t nonce = GetDeterministicRandomizer(RANDOMIZER_ID_LOCALHOSTNONCE).Write(id).Finalize();
 
     CNode* pnode = new CNode(id, nLocalServices, GetBestHeight(), hSocket, addr, CalculateKeyedNetGroup(addr), nonce, "", true);
-    GetNodeSignals().InitializeNode(pnode->GetId(), pnode);
     pnode->AddRef();
     pnode->fWhitelisted = whitelisted;
+    GetNodeSignals().InitializeNode(pnode, *this);
 
     LogPrint("net", "connection from %s accepted\n", addr.ToString());
 
@@ -2130,7 +2106,7 @@ bool CConnman::Start(boost::thread_group& threadGroup, CScheduler& scheduler, st
         uint64_t nonce = GetDeterministicRandomizer(RANDOMIZER_ID_LOCALHOSTNONCE).Write(id).Finalize();
 
         pnodeLocalHost = new CNode(id, nLocalServices, GetBestHeight(), INVALID_SOCKET, CAddress(CService(local, 0), nLocalServices), 0, nonce);
-        GetNodeSignals().InitializeNode(pnodeLocalHost->GetId(), pnodeLocalHost);
+        GetNodeSignals().InitializeNode(pnodeLocalHost, *this);
     }
 
     //

src/net.h

@@ -163,9 +163,6 @@ public:
         PushMessageWithVersionAndFlag(pnode, 0, 0, sCommand, std::forward<Args>(args)...);
     }
 
-    void PushVersion(CNode* pnode, int64_t nTime);
-
-
     template<typename Callable>
     bool ForEachNodeContinueIf(Callable&& func)
     {
@@ -462,7 +459,7 @@ struct CNodeSignals
 {
     boost::signals2::signal<bool (CNode*, CConnman&), CombinerAll> ProcessMessages;
     boost::signals2::signal<bool (CNode*, CConnman&), CombinerAll> SendMessages;
-    boost::signals2::signal<void (NodeId, const CNode*)> InitializeNode;
+    boost::signals2::signal<void (CNode*, CConnman&)> InitializeNode;
     boost::signals2::signal<void (NodeId, bool&)> FinalizeNode;
 };
 
@@ -722,6 +719,10 @@ public:
       return nLocalHostNonce;
     }
 
+    int GetMyStartingHeight() const {
+      return nMyStartingHeight;
+    }
+
     int GetRefCount()
     {
         assert(nRefCount >= 0);

src/test/DoS_tests.cpp

@@ -50,7 +50,7 @@ BOOST_AUTO_TEST_CASE(DoS_banning)
     CAddress addr1(ip(0xa0b0c001), NODE_NONE);
     CNode dummyNode1(id++, NODE_NETWORK, 0, INVALID_SOCKET, addr1, 0, 0, "", true);
     dummyNode1.SetSendVersion(PROTOCOL_VERSION);
-    GetNodeSignals().InitializeNode(dummyNode1.GetId(), &dummyNode1);
+    GetNodeSignals().InitializeNode(&dummyNode1, *connman);
     dummyNode1.nVersion = 1;
     Misbehaving(dummyNode1.GetId(), 100); // Should get banned
     SendMessages(&dummyNode1, *connman);
@@ -60,7 +60,7 @@ BOOST_AUTO_TEST_CASE(DoS_banning)
     CAddress addr2(ip(0xa0b0c002), NODE_NONE);
     CNode dummyNode2(id++, NODE_NETWORK, 0, INVALID_SOCKET, addr2, 1, 1, "", true);
     dummyNode2.SetSendVersion(PROTOCOL_VERSION);
-    GetNodeSignals().InitializeNode(dummyNode2.GetId(), &dummyNode2);
+    GetNodeSignals().InitializeNode(&dummyNode2, *connman);
     dummyNode2.nVersion = 1;
     Misbehaving(dummyNode2.GetId(), 50);
     SendMessages(&dummyNode2, *connman);
@@ -78,7 +78,7 @@ BOOST_AUTO_TEST_CASE(DoS_banscore)
     CAddress addr1(ip(0xa0b0c001), NODE_NONE);
     CNode dummyNode1(id++, NODE_NETWORK, 0, INVALID_SOCKET, addr1, 3, 1, "", true);
     dummyNode1.SetSendVersion(PROTOCOL_VERSION);
-    GetNodeSignals().InitializeNode(dummyNode1.GetId(), &dummyNode1);
+    GetNodeSignals().InitializeNode(&dummyNode1, *connman);
     dummyNode1.nVersion = 1;
     Misbehaving(dummyNode1.GetId(), 100);
     SendMessages(&dummyNode1, *connman);
@@ -101,7 +101,7 @@ BOOST_AUTO_TEST_CASE(DoS_bantime)
     CAddress addr(ip(0xa0b0c001), NODE_NONE);
     CNode dummyNode(id++, NODE_NETWORK, 0, INVALID_SOCKET, addr, 4, 4, "", true);
     dummyNode.SetSendVersion(PROTOCOL_VERSION);
-    GetNodeSignals().InitializeNode(dummyNode.GetId(), &dummyNode);
+    GetNodeSignals().InitializeNode(&dummyNode, *connman);
     dummyNode.nVersion = 1;
 
     Misbehaving(dummyNode.GetId(), 100);