85a4b6da55
Fixes #4679. This leaves us with only one candidate, checkip.dyndns.org. GetMyExternalIP should be phased out as soon as possible. Rebased-from: c33b983903c64d88a2aef24da1827b86aadce596
1962 lines
63 KiB
C++
1962 lines
63 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2014 The Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "db.h"
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#include "net.h"
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#include "init.h"
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#include "addrman.h"
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#include "ui_interface.h"
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#include "script.h"
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#ifdef WIN32
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#include <string.h>
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#endif
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#ifdef USE_UPNP
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#include <miniupnpc/miniwget.h>
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#include <miniupnpc/miniupnpc.h>
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#include <miniupnpc/upnpcommands.h>
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#include <miniupnpc/upnperrors.h>
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#endif
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// Dump addresses to peers.dat every 15 minutes (900s)
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#define DUMP_ADDRESSES_INTERVAL 900
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using namespace std;
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using namespace boost;
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static const int MAX_OUTBOUND_CONNECTIONS = 8;
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bool OpenNetworkConnection(const CAddress& addrConnect, CSemaphoreGrant *grantOutbound = NULL, const char *strDest = NULL, bool fOneShot = false);
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struct LocalServiceInfo {
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int nScore;
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int nPort;
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};
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//
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// Global state variables
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//
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bool fDiscover = true;
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uint64 nLocalServices = NODE_NETWORK;
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static CCriticalSection cs_mapLocalHost;
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static map<CNetAddr, LocalServiceInfo> mapLocalHost;
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static bool vfReachable[NET_MAX] = {};
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static bool vfLimited[NET_MAX] = {};
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static CNode* pnodeLocalHost = NULL;
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static CNode* pnodeSync = NULL;
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uint64 nLocalHostNonce = 0;
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static std::vector<SOCKET> vhListenSocket;
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CAddrMan addrman;
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int nMaxConnections = 125;
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vector<CNode*> vNodes;
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CCriticalSection cs_vNodes;
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map<CInv, CDataStream> mapRelay;
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deque<pair<int64, CInv> > vRelayExpiration;
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CCriticalSection cs_mapRelay;
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limitedmap<CInv, int64> mapAlreadyAskedFor(MAX_INV_SZ);
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static deque<string> vOneShots;
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CCriticalSection cs_vOneShots;
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set<CNetAddr> setservAddNodeAddresses;
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CCriticalSection cs_setservAddNodeAddresses;
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vector<std::string> vAddedNodes;
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CCriticalSection cs_vAddedNodes;
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static CSemaphore *semOutbound = NULL;
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void AddOneShot(string strDest)
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{
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LOCK(cs_vOneShots);
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vOneShots.push_back(strDest);
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}
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unsigned short GetListenPort()
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{
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return (unsigned short)(GetArg("-port", GetDefaultPort()));
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}
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void CNode::PushGetBlocks(CBlockIndex* pindexBegin, uint256 hashEnd)
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{
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// Filter out duplicate requests
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if (pindexBegin == pindexLastGetBlocksBegin && hashEnd == hashLastGetBlocksEnd)
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return;
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pindexLastGetBlocksBegin = pindexBegin;
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hashLastGetBlocksEnd = hashEnd;
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PushMessage("getblocks", CBlockLocator(pindexBegin), hashEnd);
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}
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// find 'best' local address for a particular peer
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bool GetLocal(CService& addr, const CNetAddr *paddrPeer)
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{
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if (fNoListen)
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return false;
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int nBestScore = -1;
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int nBestReachability = -1;
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{
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LOCK(cs_mapLocalHost);
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for (map<CNetAddr, LocalServiceInfo>::iterator it = mapLocalHost.begin(); it != mapLocalHost.end(); it++)
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{
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int nScore = (*it).second.nScore;
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int nReachability = (*it).first.GetReachabilityFrom(paddrPeer);
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if (nReachability > nBestReachability || (nReachability == nBestReachability && nScore > nBestScore))
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{
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addr = CService((*it).first, (*it).second.nPort);
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nBestReachability = nReachability;
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nBestScore = nScore;
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}
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}
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}
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return nBestScore >= 0;
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}
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// get best local address for a particular peer as a CAddress
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CAddress GetLocalAddress(const CNetAddr *paddrPeer)
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{
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CAddress ret(CService("0.0.0.0",0),0);
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CService addr;
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if (GetLocal(addr, paddrPeer))
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{
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ret = CAddress(addr);
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ret.nServices = nLocalServices;
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ret.nTime = GetAdjustedTime();
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}
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return ret;
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}
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bool RecvLine(SOCKET hSocket, string& strLine)
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{
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strLine = "";
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loop
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{
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char c;
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int nBytes = recv(hSocket, &c, 1, 0);
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if (nBytes > 0)
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{
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if (c == '\n')
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continue;
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if (c == '\r')
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return true;
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strLine += c;
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if (strLine.size() >= 9000)
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return true;
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}
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else if (nBytes <= 0)
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{
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boost::this_thread::interruption_point();
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if (nBytes < 0)
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{
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int nErr = WSAGetLastError();
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if (nErr == WSAEMSGSIZE)
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continue;
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if (nErr == WSAEWOULDBLOCK || nErr == WSAEINTR || nErr == WSAEINPROGRESS)
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{
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MilliSleep(10);
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continue;
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}
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}
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if (!strLine.empty())
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return true;
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if (nBytes == 0)
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{
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// socket closed
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printf("socket closed\n");
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return false;
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}
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else
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{
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// socket error
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int nErr = WSAGetLastError();
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printf("recv failed: %d\n", nErr);
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return false;
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}
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}
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}
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}
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// used when scores of local addresses may have changed
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// pushes better local address to peers
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void static AdvertizeLocal()
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{
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LOCK(cs_vNodes);
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BOOST_FOREACH(CNode* pnode, vNodes)
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{
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if (pnode->fSuccessfullyConnected)
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{
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CAddress addrLocal = GetLocalAddress(&pnode->addr);
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if (addrLocal.IsRoutable() && (CService)addrLocal != (CService)pnode->addrLocal)
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{
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pnode->PushAddress(addrLocal);
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pnode->addrLocal = addrLocal;
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}
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}
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}
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}
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void SetReachable(enum Network net, bool fFlag)
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{
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LOCK(cs_mapLocalHost);
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vfReachable[net] = fFlag;
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if (net == NET_IPV6 && fFlag)
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vfReachable[NET_IPV4] = true;
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}
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// learn a new local address
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bool AddLocal(const CService& addr, int nScore)
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{
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if (!addr.IsRoutable())
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return false;
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if (!fDiscover && nScore < LOCAL_MANUAL)
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return false;
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if (IsLimited(addr))
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return false;
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printf("AddLocal(%s,%i)\n", addr.ToString().c_str(), nScore);
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{
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LOCK(cs_mapLocalHost);
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bool fAlready = mapLocalHost.count(addr) > 0;
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LocalServiceInfo &info = mapLocalHost[addr];
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if (!fAlready || nScore >= info.nScore) {
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info.nScore = nScore + (fAlready ? 1 : 0);
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info.nPort = addr.GetPort();
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}
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SetReachable(addr.GetNetwork());
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}
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AdvertizeLocal();
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return true;
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}
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bool AddLocal(const CNetAddr &addr, int nScore)
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{
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return AddLocal(CService(addr, GetListenPort()), nScore);
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}
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/** Make a particular network entirely off-limits (no automatic connects to it) */
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void SetLimited(enum Network net, bool fLimited)
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{
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if (net == NET_UNROUTABLE)
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return;
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LOCK(cs_mapLocalHost);
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vfLimited[net] = fLimited;
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}
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bool IsLimited(enum Network net)
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{
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LOCK(cs_mapLocalHost);
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return vfLimited[net];
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}
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bool IsLimited(const CNetAddr &addr)
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{
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return IsLimited(addr.GetNetwork());
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}
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/** vote for a local address */
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bool SeenLocal(const CService& addr)
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{
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{
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LOCK(cs_mapLocalHost);
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if (mapLocalHost.count(addr) == 0)
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return false;
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mapLocalHost[addr].nScore++;
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}
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AdvertizeLocal();
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return true;
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}
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/** check whether a given address is potentially local */
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bool IsLocal(const CService& addr)
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{
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LOCK(cs_mapLocalHost);
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return mapLocalHost.count(addr) > 0;
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}
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/** check whether a given address is in a network we can probably connect to */
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bool IsReachable(const CNetAddr& addr)
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{
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LOCK(cs_mapLocalHost);
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enum Network net = addr.GetNetwork();
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return vfReachable[net] && !vfLimited[net];
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}
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bool GetMyExternalIP2(const CService& addrConnect, const char* pszGet, const char* pszKeyword, CNetAddr& ipRet)
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{
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SOCKET hSocket;
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if (!ConnectSocket(addrConnect, hSocket))
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return error("GetMyExternalIP() : connection to %s failed", addrConnect.ToString().c_str());
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send(hSocket, pszGet, strlen(pszGet), MSG_NOSIGNAL);
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string strLine;
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while (RecvLine(hSocket, strLine))
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{
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if (strLine.empty()) // HTTP response is separated from headers by blank line
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{
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loop
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{
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if (!RecvLine(hSocket, strLine))
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{
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closesocket(hSocket);
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return false;
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}
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if (pszKeyword == NULL)
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break;
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if (strLine.find(pszKeyword) != string::npos)
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{
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strLine = strLine.substr(strLine.find(pszKeyword) + strlen(pszKeyword));
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break;
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}
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}
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closesocket(hSocket);
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if (strLine.find("<") != string::npos)
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strLine = strLine.substr(0, strLine.find("<"));
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strLine = strLine.substr(strspn(strLine.c_str(), " \t\n\r"));
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while (strLine.size() > 0 && isspace(strLine[strLine.size()-1]))
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strLine.resize(strLine.size()-1);
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CService addr(strLine,0,true);
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printf("GetMyExternalIP() received [%s] %s\n", strLine.c_str(), addr.ToString().c_str());
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if (!addr.IsValid() || !addr.IsRoutable())
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return false;
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ipRet.SetIP(addr);
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return true;
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}
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}
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closesocket(hSocket);
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return error("GetMyExternalIP() : connection closed");
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}
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bool GetMyExternalIP(CNetAddr& ipRet)
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{
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CService addrConnect;
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const char* pszGet;
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const char* pszKeyword;
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for (int nLookup = 0; nLookup <= 1; nLookup++)
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for (int nHost = 1; nHost <= 1; nHost++)
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{
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// We should be phasing out our use of sites like these. If we need
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// replacements, we should ask for volunteers to put this simple
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// php file on their web server that prints the client IP:
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// <?php echo $_SERVER["REMOTE_ADDR"]; ?>
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if (nHost == 1)
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{
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addrConnect = CService("91.198.22.70", 80); // checkip.dyndns.org
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if (nLookup == 1)
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{
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CService addrIP("checkip.dyndns.org", 80, true);
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if (addrIP.IsValid())
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addrConnect = addrIP;
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}
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pszGet = "GET / HTTP/1.1\r\n"
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"Host: checkip.dyndns.org\r\n"
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"User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n"
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"Connection: close\r\n"
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"\r\n";
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pszKeyword = "Address:";
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}
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if (GetMyExternalIP2(addrConnect, pszGet, pszKeyword, ipRet))
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return true;
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}
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return false;
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}
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void ThreadGetMyExternalIP(void* parg)
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{
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// Make this thread recognisable as the external IP detection thread
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RenameThread("bitcoin-ext-ip");
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CNetAddr addrLocalHost;
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if (GetMyExternalIP(addrLocalHost))
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{
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printf("GetMyExternalIP() returned %s\n", addrLocalHost.ToStringIP().c_str());
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AddLocal(addrLocalHost, LOCAL_HTTP);
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}
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}
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void AddressCurrentlyConnected(const CService& addr)
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{
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addrman.Connected(addr);
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}
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CNode* FindNode(const CNetAddr& ip)
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{
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LOCK(cs_vNodes);
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BOOST_FOREACH(CNode* pnode, vNodes)
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if ((CNetAddr)pnode->addr == ip)
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return (pnode);
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return NULL;
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}
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CNode* FindNode(std::string addrName)
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{
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LOCK(cs_vNodes);
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BOOST_FOREACH(CNode* pnode, vNodes)
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if (pnode->addrName == addrName)
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return (pnode);
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return NULL;
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}
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CNode* FindNode(const CService& addr)
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{
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LOCK(cs_vNodes);
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BOOST_FOREACH(CNode* pnode, vNodes)
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if ((CService)pnode->addr == addr)
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return (pnode);
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return NULL;
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}
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CNode* ConnectNode(CAddress addrConnect, const char *pszDest)
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{
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if (pszDest == NULL) {
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if (IsLocal(addrConnect))
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return NULL;
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// Look for an existing connection
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CNode* pnode = FindNode((CService)addrConnect);
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if (pnode)
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{
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pnode->AddRef();
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return pnode;
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}
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}
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/// debug print
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printf("trying connection %s lastseen=%.1fhrs\n",
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pszDest ? pszDest : addrConnect.ToString().c_str(),
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pszDest ? 0 : (double)(GetAdjustedTime() - addrConnect.nTime)/3600.0);
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// Connect
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SOCKET hSocket;
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if (pszDest ? ConnectSocketByName(addrConnect, hSocket, pszDest, GetDefaultPort()) : ConnectSocket(addrConnect, hSocket))
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{
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addrman.Attempt(addrConnect);
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/// debug print
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printf("connected %s\n", pszDest ? pszDest : addrConnect.ToString().c_str());
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// Set to non-blocking
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#ifdef WIN32
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u_long nOne = 1;
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if (ioctlsocket(hSocket, FIONBIO, &nOne) == SOCKET_ERROR)
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printf("ConnectSocket() : ioctlsocket non-blocking setting failed, error %d\n", WSAGetLastError());
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#else
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if (fcntl(hSocket, F_SETFL, O_NONBLOCK) == SOCKET_ERROR)
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printf("ConnectSocket() : fcntl non-blocking setting failed, error %d\n", errno);
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#endif
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// Add node
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CNode* pnode = new CNode(hSocket, addrConnect, pszDest ? pszDest : "", false);
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pnode->AddRef();
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{
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LOCK(cs_vNodes);
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vNodes.push_back(pnode);
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}
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pnode->nTimeConnected = GetTime();
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return pnode;
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}
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else
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{
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return NULL;
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}
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}
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void CNode::CloseSocketDisconnect()
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{
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fDisconnect = true;
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if (hSocket != INVALID_SOCKET)
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{
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printf("disconnecting node %s\n", addrName.c_str());
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closesocket(hSocket);
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hSocket = INVALID_SOCKET;
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}
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// in case this fails, we'll empty the recv buffer when the CNode is deleted
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TRY_LOCK(cs_vRecvMsg, lockRecv);
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if (lockRecv)
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vRecvMsg.clear();
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// if this was the sync node, we'll need a new one
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if (this == pnodeSync)
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pnodeSync = NULL;
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}
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void CNode::Cleanup()
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{
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}
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void CNode::PushVersion()
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{
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/// when NTP implemented, change to just nTime = GetAdjustedTime()
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int64 nTime = (fInbound ? GetAdjustedTime() : GetTime());
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CAddress addrYou = (addr.IsRoutable() && !IsProxy(addr) ? addr : CAddress(CService("0.0.0.0",0)));
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CAddress addrMe = GetLocalAddress(&addr);
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RAND_bytes((unsigned char*)&nLocalHostNonce, sizeof(nLocalHostNonce));
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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());
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PushMessage("version", PROTOCOL_VERSION, nLocalServices, nTime, addrYou, addrMe,
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nLocalHostNonce, FormatSubVersion(CLIENT_NAME, CLIENT_VERSION, std::vector<string>()), nBestHeight);
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}
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std::map<CNetAddr, int64> CNode::setBanned;
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CCriticalSection CNode::cs_setBanned;
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void CNode::ClearBanned()
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{
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setBanned.clear();
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}
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bool CNode::IsBanned(CNetAddr ip)
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{
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bool fResult = false;
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{
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LOCK(cs_setBanned);
|
|
std::map<CNetAddr, int64>::iterator i = setBanned.find(ip);
|
|
if (i != setBanned.end())
|
|
{
|
|
int64 t = (*i).second;
|
|
if (GetTime() < t)
|
|
fResult = true;
|
|
}
|
|
}
|
|
return fResult;
|
|
}
|
|
|
|
bool CNode::Misbehaving(int howmuch)
|
|
{
|
|
if (addr.IsLocal())
|
|
{
|
|
printf("Warning: Local node %s misbehaving (delta: %d)!\n", addrName.c_str(), howmuch);
|
|
return false;
|
|
}
|
|
|
|
nMisbehavior += howmuch;
|
|
if (nMisbehavior >= GetArg("-banscore", 100))
|
|
{
|
|
int64 banTime = GetTime()+GetArg("-bantime", 60*60*24); // 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();
|
|
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(cleanSubVer);
|
|
X(fInbound);
|
|
X(nStartingHeight);
|
|
X(nMisbehavior);
|
|
X(nSendBytes);
|
|
X(nRecvBytes);
|
|
X(nBlocksRequested);
|
|
stats.fSyncNode = (this == pnodeSync);
|
|
}
|
|
#undef X
|
|
|
|
// requires LOCK(cs_vRecvMsg)
|
|
bool CNode::ReceiveMsgBytes(const char *pch, unsigned int nBytes)
|
|
{
|
|
while (nBytes > 0) {
|
|
|
|
// get current incomplete message, or create a new one
|
|
if (vRecvMsg.empty() ||
|
|
vRecvMsg.back().complete())
|
|
vRecvMsg.push_back(CNetMessage(SER_NETWORK, nRecvVersion));
|
|
|
|
CNetMessage& msg = vRecvMsg.back();
|
|
|
|
// absorb network data
|
|
int handled;
|
|
if (!msg.in_data)
|
|
handled = msg.readHeader(pch, nBytes);
|
|
else
|
|
handled = msg.readData(pch, nBytes);
|
|
|
|
if (handled < 0)
|
|
return false;
|
|
|
|
pch += handled;
|
|
nBytes -= handled;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
int CNetMessage::readHeader(const char *pch, unsigned int nBytes)
|
|
{
|
|
// copy data to temporary parsing buffer
|
|
unsigned int nRemaining = 24 - nHdrPos;
|
|
unsigned int nCopy = std::min(nRemaining, nBytes);
|
|
|
|
memcpy(&hdrbuf[nHdrPos], pch, nCopy);
|
|
nHdrPos += nCopy;
|
|
|
|
// if header incomplete, exit
|
|
if (nHdrPos < 24)
|
|
return nCopy;
|
|
|
|
// deserialize to CMessageHeader
|
|
try {
|
|
hdrbuf >> hdr;
|
|
}
|
|
catch (std::exception &e) {
|
|
return -1;
|
|
}
|
|
|
|
// reject messages larger than MAX_SIZE
|
|
if (hdr.nMessageSize > MAX_SIZE)
|
|
return -1;
|
|
|
|
// switch state to reading message data
|
|
in_data = true;
|
|
vRecv.resize(hdr.nMessageSize);
|
|
|
|
return nCopy;
|
|
}
|
|
|
|
int CNetMessage::readData(const char *pch, unsigned int nBytes)
|
|
{
|
|
unsigned int nRemaining = hdr.nMessageSize - nDataPos;
|
|
unsigned int nCopy = std::min(nRemaining, nBytes);
|
|
|
|
memcpy(&vRecv[nDataPos], pch, nCopy);
|
|
nDataPos += nCopy;
|
|
|
|
return nCopy;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// requires LOCK(cs_vSend)
|
|
void SocketSendData(CNode *pnode)
|
|
{
|
|
std::deque<CSerializeData>::iterator it = pnode->vSendMsg.begin();
|
|
|
|
while (it != pnode->vSendMsg.end()) {
|
|
const CSerializeData &data = *it;
|
|
assert(data.size() > pnode->nSendOffset);
|
|
int nBytes = send(pnode->hSocket, &data[pnode->nSendOffset], data.size() - pnode->nSendOffset, MSG_NOSIGNAL | MSG_DONTWAIT);
|
|
if (nBytes > 0) {
|
|
pnode->nLastSend = GetTime();
|
|
pnode->nSendBytes += nBytes;
|
|
pnode->nSendOffset += nBytes;
|
|
if (pnode->nSendOffset == data.size()) {
|
|
pnode->nSendOffset = 0;
|
|
pnode->nSendSize -= data.size();
|
|
it++;
|
|
} else {
|
|
// could not send full message; stop sending more
|
|
break;
|
|
}
|
|
} else {
|
|
if (nBytes < 0) {
|
|
// error
|
|
int nErr = WSAGetLastError();
|
|
if (nErr != WSAEWOULDBLOCK && nErr != WSAEMSGSIZE && nErr != WSAEINTR && nErr != WSAEINPROGRESS)
|
|
{
|
|
printf("socket send error %d\n", nErr);
|
|
pnode->CloseSocketDisconnect();
|
|
}
|
|
}
|
|
// couldn't send anything at all
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (it == pnode->vSendMsg.end()) {
|
|
assert(pnode->nSendOffset == 0);
|
|
assert(pnode->nSendSize == 0);
|
|
}
|
|
pnode->vSendMsg.erase(pnode->vSendMsg.begin(), it);
|
|
}
|
|
|
|
static list<CNode*> vNodesDisconnected;
|
|
|
|
void ThreadSocketHandler()
|
|
{
|
|
unsigned int nPrevNodeCount = 0;
|
|
loop
|
|
{
|
|
//
|
|
// Disconnect nodes
|
|
//
|
|
{
|
|
LOCK(cs_vNodes);
|
|
// Disconnect unused nodes
|
|
vector<CNode*> vNodesCopy = vNodes;
|
|
BOOST_FOREACH(CNode* pnode, vNodesCopy)
|
|
{
|
|
if (pnode->fDisconnect ||
|
|
(pnode->GetRefCount() <= 0 && pnode->vRecvMsg.empty() && pnode->nSendSize == 0 && pnode->ssSend.empty()))
|
|
{
|
|
// 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();
|
|
|
|
// hold in disconnected pool until all refs are released
|
|
if (pnode->fNetworkNode || pnode->fInbound)
|
|
pnode->Release();
|
|
vNodesDisconnected.push_back(pnode);
|
|
}
|
|
}
|
|
|
|
// Delete disconnected nodes
|
|
list<CNode*> vNodesDisconnectedCopy = vNodesDisconnected;
|
|
BOOST_FOREACH(CNode* pnode, vNodesDisconnectedCopy)
|
|
{
|
|
// wait until threads are done using it
|
|
if (pnode->GetRefCount() <= 0)
|
|
{
|
|
bool fDelete = false;
|
|
{
|
|
TRY_LOCK(pnode->cs_vSend, lockSend);
|
|
if (lockSend)
|
|
{
|
|
TRY_LOCK(pnode->cs_vRecvMsg, lockRecv);
|
|
if (lockRecv)
|
|
{
|
|
TRY_LOCK(pnode->cs_inventory, lockInv);
|
|
if (lockInv)
|
|
fDelete = true;
|
|
}
|
|
}
|
|
}
|
|
if (fDelete)
|
|
{
|
|
vNodesDisconnected.remove(pnode);
|
|
delete pnode;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (vNodes.size() != nPrevNodeCount)
|
|
{
|
|
nPrevNodeCount = vNodes.size();
|
|
uiInterface.NotifyNumConnectionsChanged(vNodes.size());
|
|
}
|
|
|
|
|
|
//
|
|
// Find which sockets have data to receive
|
|
//
|
|
struct timeval timeout;
|
|
timeout.tv_sec = 0;
|
|
timeout.tv_usec = 50000; // frequency to poll pnode->vSend
|
|
|
|
fd_set fdsetRecv;
|
|
fd_set fdsetSend;
|
|
fd_set fdsetError;
|
|
FD_ZERO(&fdsetRecv);
|
|
FD_ZERO(&fdsetSend);
|
|
FD_ZERO(&fdsetError);
|
|
SOCKET hSocketMax = 0;
|
|
bool have_fds = false;
|
|
|
|
BOOST_FOREACH(SOCKET hListenSocket, vhListenSocket) {
|
|
FD_SET(hListenSocket, &fdsetRecv);
|
|
hSocketMax = max(hSocketMax, hListenSocket);
|
|
have_fds = true;
|
|
}
|
|
{
|
|
LOCK(cs_vNodes);
|
|
BOOST_FOREACH(CNode* pnode, vNodes)
|
|
{
|
|
if (pnode->hSocket == INVALID_SOCKET)
|
|
continue;
|
|
FD_SET(pnode->hSocket, &fdsetError);
|
|
hSocketMax = max(hSocketMax, pnode->hSocket);
|
|
have_fds = true;
|
|
|
|
// Implement the following logic:
|
|
// * If there is data to send, select() for sending data. As this only
|
|
// happens when optimistic write failed, we choose to first drain the
|
|
// write buffer in this case before receiving more. This avoids
|
|
// needlessly queueing received data, if the remote peer is not themselves
|
|
// receiving data. This means properly utilizing TCP flow control signalling.
|
|
// * Otherwise, if there is no (complete) message in the receive buffer,
|
|
// or there is space left in the buffer, select() for receiving data.
|
|
// * (if neither of the above applies, there is certainly one message
|
|
// in the receiver buffer ready to be processed).
|
|
// Together, that means that at least one of the following is always possible,
|
|
// so we don't deadlock:
|
|
// * We send some data.
|
|
// * We wait for data to be received (and disconnect after timeout).
|
|
// * We process a message in the buffer (message handler thread).
|
|
{
|
|
TRY_LOCK(pnode->cs_vSend, lockSend);
|
|
if (lockSend && !pnode->vSendMsg.empty()) {
|
|
FD_SET(pnode->hSocket, &fdsetSend);
|
|
continue;
|
|
}
|
|
}
|
|
{
|
|
TRY_LOCK(pnode->cs_vRecvMsg, lockRecv);
|
|
if (lockRecv && (
|
|
pnode->vRecvMsg.empty() || !pnode->vRecvMsg.front().complete() ||
|
|
pnode->GetTotalRecvSize() <= ReceiveFloodSize()))
|
|
FD_SET(pnode->hSocket, &fdsetRecv);
|
|
}
|
|
}
|
|
}
|
|
|
|
int nSelect = select(have_fds ? hSocketMax + 1 : 0,
|
|
&fdsetRecv, &fdsetSend, &fdsetError, &timeout);
|
|
boost::this_thread::interruption_point();
|
|
|
|
if (nSelect == SOCKET_ERROR)
|
|
{
|
|
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);
|
|
}
|
|
FD_ZERO(&fdsetSend);
|
|
FD_ZERO(&fdsetError);
|
|
MilliSleep(timeout.tv_usec/1000);
|
|
}
|
|
|
|
|
|
//
|
|
// Accept new connections
|
|
//
|
|
BOOST_FOREACH(SOCKET hListenSocket, vhListenSocket)
|
|
if (hListenSocket != INVALID_SOCKET && FD_ISSET(hListenSocket, &fdsetRecv))
|
|
{
|
|
#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)
|
|
if (!addr.SetSockAddr((const struct sockaddr*)&sockaddr))
|
|
printf("Warning: Unknown socket family\n");
|
|
|
|
{
|
|
LOCK(cs_vNodes);
|
|
BOOST_FOREACH(CNode* pnode, vNodes)
|
|
if (pnode->fInbound)
|
|
nInbound++;
|
|
}
|
|
|
|
if (hSocket == INVALID_SOCKET)
|
|
{
|
|
int nErr = WSAGetLastError();
|
|
if (nErr != WSAEWOULDBLOCK)
|
|
printf("socket error accept failed: %d\n", nErr);
|
|
}
|
|
else if (nInbound >= nMaxConnections - MAX_OUTBOUND_CONNECTIONS)
|
|
{
|
|
{
|
|
LOCK(cs_setservAddNodeAddresses);
|
|
if (!setservAddNodeAddresses.count(addr))
|
|
closesocket(hSocket);
|
|
}
|
|
}
|
|
else if (CNode::IsBanned(addr))
|
|
{
|
|
printf("connection from %s dropped (banned)\n", addr.ToString().c_str());
|
|
closesocket(hSocket);
|
|
}
|
|
else
|
|
{
|
|
printf("accepted connection %s\n", addr.ToString().c_str());
|
|
CNode* pnode = new CNode(hSocket, addr, "", true);
|
|
pnode->AddRef();
|
|
{
|
|
LOCK(cs_vNodes);
|
|
vNodes.push_back(pnode);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// Service each socket
|
|
//
|
|
vector<CNode*> vNodesCopy;
|
|
{
|
|
LOCK(cs_vNodes);
|
|
vNodesCopy = vNodes;
|
|
BOOST_FOREACH(CNode* pnode, vNodesCopy)
|
|
pnode->AddRef();
|
|
}
|
|
BOOST_FOREACH(CNode* pnode, vNodesCopy)
|
|
{
|
|
boost::this_thread::interruption_point();
|
|
|
|
//
|
|
// Receive
|
|
//
|
|
if (pnode->hSocket == INVALID_SOCKET)
|
|
continue;
|
|
if (FD_ISSET(pnode->hSocket, &fdsetRecv) || FD_ISSET(pnode->hSocket, &fdsetError))
|
|
{
|
|
TRY_LOCK(pnode->cs_vRecvMsg, lockRecv);
|
|
if (lockRecv)
|
|
{
|
|
{
|
|
// typical socket buffer is 8K-64K
|
|
char pchBuf[0x10000];
|
|
int nBytes = recv(pnode->hSocket, pchBuf, sizeof(pchBuf), MSG_DONTWAIT);
|
|
if (nBytes > 0)
|
|
{
|
|
if (!pnode->ReceiveMsgBytes(pchBuf, nBytes))
|
|
pnode->CloseSocketDisconnect();
|
|
pnode->nLastRecv = GetTime();
|
|
pnode->nRecvBytes += nBytes;
|
|
}
|
|
else if (nBytes == 0)
|
|
{
|
|
// socket closed gracefully
|
|
if (!pnode->fDisconnect)
|
|
printf("socket closed\n");
|
|
pnode->CloseSocketDisconnect();
|
|
}
|
|
else if (nBytes < 0)
|
|
{
|
|
// error
|
|
int nErr = WSAGetLastError();
|
|
if (nErr != WSAEWOULDBLOCK && nErr != WSAEMSGSIZE && nErr != WSAEINTR && nErr != WSAEINPROGRESS)
|
|
{
|
|
if (!pnode->fDisconnect)
|
|
printf("socket recv error %d\n", nErr);
|
|
pnode->CloseSocketDisconnect();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Send
|
|
//
|
|
if (pnode->hSocket == INVALID_SOCKET)
|
|
continue;
|
|
if (FD_ISSET(pnode->hSocket, &fdsetSend))
|
|
{
|
|
TRY_LOCK(pnode->cs_vSend, lockSend);
|
|
if (lockSend)
|
|
SocketSendData(pnode);
|
|
}
|
|
|
|
//
|
|
// Inactivity checking
|
|
//
|
|
if (pnode->vSendMsg.empty())
|
|
pnode->nLastSendEmpty = GetTime();
|
|
if (GetTime() - pnode->nTimeConnected > 60)
|
|
{
|
|
if (pnode->nLastRecv == 0 || pnode->nLastSend == 0)
|
|
{
|
|
printf("socket no message in first 60 seconds, %d %d\n", pnode->nLastRecv != 0, pnode->nLastSend != 0);
|
|
pnode->fDisconnect = true;
|
|
}
|
|
else if (GetTime() - pnode->nLastSend > 90*60 && GetTime() - pnode->nLastSendEmpty > 90*60)
|
|
{
|
|
printf("socket not sending\n");
|
|
pnode->fDisconnect = true;
|
|
}
|
|
else if (GetTime() - pnode->nLastRecv > 90*60)
|
|
{
|
|
printf("socket inactivity timeout\n");
|
|
pnode->fDisconnect = true;
|
|
}
|
|
}
|
|
}
|
|
{
|
|
LOCK(cs_vNodes);
|
|
BOOST_FOREACH(CNode* pnode, vNodesCopy)
|
|
pnode->Release();
|
|
}
|
|
|
|
MilliSleep(10);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef USE_UPNP
|
|
void ThreadMapPort()
|
|
{
|
|
std::string port = strprintf("%u", 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 (fDiscover) {
|
|
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);
|
|
AddLocal(CNetAddr(externalIPAddress), LOCAL_UPNP);
|
|
}
|
|
else
|
|
printf("UPnP: GetExternalIPAddress failed.\n");
|
|
}
|
|
}
|
|
|
|
string strDesc = "Litecoin " + FormatFullVersion();
|
|
|
|
try {
|
|
loop {
|
|
#ifndef UPNPDISCOVER_SUCCESS
|
|
/* miniupnpc 1.5 */
|
|
r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
|
|
port.c_str(), port.c_str(), lanaddr, strDesc.c_str(), "TCP", 0);
|
|
#else
|
|
/* miniupnpc 1.6 */
|
|
r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
|
|
port.c_str(), port.c_str(), lanaddr, strDesc.c_str(), "TCP", 0, "0");
|
|
#endif
|
|
|
|
if(r!=UPNPCOMMAND_SUCCESS)
|
|
printf("AddPortMapping(%s, %s, %s) failed with code %d (%s)\n",
|
|
port.c_str(), port.c_str(), lanaddr, r, strupnperror(r));
|
|
else
|
|
printf("UPnP Port Mapping successful.\n");;
|
|
|
|
MilliSleep(20*60*1000); // Refresh every 20 minutes
|
|
}
|
|
}
|
|
catch (boost::thread_interrupted)
|
|
{
|
|
r = UPNP_DeletePortMapping(urls.controlURL, data.first.servicetype, port.c_str(), "TCP", 0);
|
|
printf("UPNP_DeletePortMapping() returned : %d\n", r);
|
|
freeUPNPDevlist(devlist); devlist = 0;
|
|
FreeUPNPUrls(&urls);
|
|
throw;
|
|
}
|
|
} else {
|
|
printf("No valid UPnP IGDs found\n");
|
|
freeUPNPDevlist(devlist); devlist = 0;
|
|
if (r != 0)
|
|
FreeUPNPUrls(&urls);
|
|
}
|
|
}
|
|
|
|
void MapPort(bool fUseUPnP)
|
|
{
|
|
static boost::thread* upnp_thread = NULL;
|
|
|
|
if (fUseUPnP)
|
|
{
|
|
if (upnp_thread) {
|
|
upnp_thread->interrupt();
|
|
upnp_thread->join();
|
|
delete upnp_thread;
|
|
}
|
|
upnp_thread = new boost::thread(boost::bind(&TraceThread<boost::function<void()> >, "upnp", &ThreadMapPort));
|
|
}
|
|
else if (upnp_thread) {
|
|
upnp_thread->interrupt();
|
|
upnp_thread->join();
|
|
delete upnp_thread;
|
|
upnp_thread = NULL;
|
|
}
|
|
}
|
|
|
|
#else
|
|
void MapPort(bool)
|
|
{
|
|
// 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 *strMainNetDNSSeed[][2] = {
|
|
{"litecointools.com", "dnsseed.litecointools.com"},
|
|
{"litecoinpool.org", "dnsseed.litecoinpool.org"},
|
|
{"xurious.com", "dnsseed.ltc.xurious.com"},
|
|
{"koin-project.com", "dnsseed.koin-project.com"},
|
|
{"weminemnc.com", "dnsseed.weminemnc.com"},
|
|
{NULL, NULL}
|
|
};
|
|
|
|
static const char *strTestNetDNSSeed[][2] = {
|
|
{"litecointools.com", "testnet-seed.litecointools.com"},
|
|
{"xurious.com", "testnet-seed.ltc.xurious.com"},
|
|
{"wemine-testnet.com", "dnsseed.wemine-testnet.com"},
|
|
{NULL, NULL}
|
|
};
|
|
|
|
void ThreadDNSAddressSeed()
|
|
{
|
|
static const char *(*strDNSSeed)[2] = fTestNet ? strTestNetDNSSeed : strMainNetDNSSeed;
|
|
|
|
int found = 0;
|
|
|
|
printf("Loading addresses from DNS seeds (could take a while)\n");
|
|
|
|
for (unsigned int seed_idx = 0; strDNSSeed[seed_idx][0] != NULL; seed_idx++) {
|
|
if (HaveNameProxy()) {
|
|
AddOneShot(strDNSSeed[seed_idx][1]);
|
|
} else {
|
|
vector<CNetAddr> vaddr;
|
|
vector<CAddress> vAdd;
|
|
if (LookupHost(strDNSSeed[seed_idx][1], vaddr))
|
|
{
|
|
BOOST_FOREACH(CNetAddr& ip, 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++;
|
|
}
|
|
}
|
|
addrman.Add(vAdd, CNetAddr(strDNSSeed[seed_idx][0], true));
|
|
}
|
|
}
|
|
|
|
printf("%d addresses found from DNS seeds\n", found);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
unsigned int pnSeed[] =
|
|
{
|
|
0x38a9b992, 0x73d4f3a2, 0x43eda52e, 0xa1c4a2b2, 0x73c41955, 0x6992f3a2, 0x729cb992, 0x8b53b205,
|
|
0xb651ec36, 0x8b422e4e, 0x0fe421b2, 0x83c1a2b2, 0xbd432705, 0x2e11b018, 0x281544c1, 0x8b72f3a2,
|
|
0xb934555f, 0x2ba02e4e, 0x6ab7c936, 0x8728555f, 0x03bfd143, 0x0a73df5b, 0xcd2b5a50, 0x746df3a2,
|
|
0x7481bb25, 0x6f4d4550, 0x78582f4e, 0xa03a0f46, 0xe8b0e2bc, 0xa2d17042, 0x718a09b0, 0xdaffd4a2,
|
|
0xbb1a175e, 0xb21f09b0, 0xb5549bc0, 0xe404c755, 0x95d882c3, 0xfff3692e, 0x3777d9c7, 0x425b2746,
|
|
0x497990c6, 0xb2782dcc, 0xf9352225, 0xa75cd443, 0x4c05fb94, 0x44c91c2e, 0x47c6a5bc, 0xd606fb94,
|
|
0xc1b9e2bc, 0x32acd23e, 0x89560da2, 0x5bebdad8, 0x3a210e08, 0xbdc5795b, 0xcc86bb25, 0xbe9f28bc,
|
|
0xef3ff3a2, 0xca29df59, 0xe4fd175e, 0x1f3eaa6b, 0xacdbaa6b, 0xb05f042e, 0x81ed6cd8, 0x9a3c0cc3,
|
|
0x4200175e, 0x5a017ebc, 0x42ef4c90, 0x8abfd143, 0x24fbf3a2, 0x140846a6, 0x4f7d9553, 0xeea5d151,
|
|
0xe67c0905, 0x52d8048e, 0xcabd2e4e, 0xe276692e, 0x07dea445, 0xdde3f3a2, 0x6c47bb25, 0xae0efb94,
|
|
0xf5e15a51, 0xaebdd25b, 0xf341175e, 0x46532705, 0xc47728bc, 0xe4e14c90, 0x9dc8f752, 0x050c042e,
|
|
0x1c84bb25, 0x4f163b25, 0x1a017ebc, 0xa5282e4e, 0x8c667e60, 0xc7113b25, 0xf0b44832, 0xf1a134d0,
|
|
0x973212d4, 0xd35cbb25, 0xd5123b25, 0x68220254, 0x7ad43e32, 0x9268e32e, 0xdf143b25, 0xaf04c436,
|
|
0xaded0051, 0xfa86d454, 0x09db048e, 0x26003b25, 0x58764c90, 0x9a2f555f, 0x0c24ec97, 0x92123b25,
|
|
0x0526d35f, 0x17db048e, 0xd2e42f4e, 0x38cca5bc, 0xc6320ab9, 0xe28ac836, 0xc560aa6b, 0xa5c16041,
|
|
0x70a6f1c0, 0x011ec8c1, 0xd6e9c332, 0x131263c0, 0xa15a4450, 0xef218abc, 0x2729f948, 0x02835443,
|
|
0x5614336c, 0xb12aacb2, 0xe368aa6b, 0x3cc6ffad, 0x36206494, 0x2c90e9c1, 0x32bb53d4, 0xca03de5c,
|
|
0x775c1955, 0x19ef1ba3, 0x0b00dc1f, 0x244d0f40, 0x54d9e2bc, 0x25ced152, 0x967b03ad, 0x951c555f,
|
|
0x4c3f3b25, 0x13f6f3a2, 0x17fca5bc, 0x0e2d306c, 0xacd8764b, 0xca230bcc, 0x8569d3c6, 0x3264d8a2,
|
|
0xe8630905, 0x25e02a64, 0x3aba1fb0, 0x6bbdd25b, 0xee9a4c90, 0xcda25982, 0x8b3e804e, 0xf043fb94,
|
|
0x4b05fb94, 0x0c44c052, 0xf403f45c, 0x4333aa6b, 0xc193484d, 0x3fbf5d4c, 0x0bd7f74d, 0x150e3fb2,
|
|
0x8e2eddb0, 0x09daf150, 0x8a67c7c6, 0x22a9e52e, 0x05cff476, 0xc99b2f4e, 0x0f183b25, 0xd0358953,
|
|
0x20f232c6, 0x0ce9e217, 0x09f55d18, 0x0555795b, 0x5ed2fa59, 0x2ec85917, 0x2bf61fb0, 0x024ef54d,
|
|
0x3c53b859, 0x441cbb25, 0x50c8aa6b, 0x1b79175e, 0x3125795b, 0x27fc1fb0, 0xbcd53e32, 0xfc781718,
|
|
0x7a8ec345, 0x1da6985d, 0x34bd1f32, 0xcb00edcf, 0xf9a5fdce, 0x21ccdbac, 0xb7730118, 0x6a43f6cc,
|
|
0x6e65e262, 0x21ca1f3d, 0x10143b25, 0xc8dea132, 0xaf076693, 0x7e431bc6, 0xaa3df5c6, 0x44f0c536,
|
|
0xeea80925, 0x262371d4, 0xc85c895b, 0xa6611bc6, 0x1844e47a, 0x49084c90, 0xf3d95157, 0x63a4a844,
|
|
0x00477c70, 0x2934d35f, 0xe8d24465, 0x13df88b7, 0x8fcb7557, 0xa591bd5d, 0xc39453d4, 0xd5c49452,
|
|
0xc8de1a56, 0x3cdd0608, 0x3c147a55, 0x49e6cf4a, 0xb38c8705, 0x0bef3479, 0x01540f48, 0xd9c3ec57,
|
|
0xed6d4c90, 0xa529fb94, 0xe1c81955, 0xfde617c6, 0x72d18932, 0x9d61bb6a, 0x6d5cb258, 0x27c7d655,
|
|
0xc5644c90, 0x31fae3bc, 0x3afaf25e, 0x98efe2bc, 0x91020905, 0xb566795b, 0xaf91bd5d, 0xb164d655,
|
|
0x72eb47d4, 0xae62f3a2, 0xb4193b25, 0x0613fb94, 0xa6db048e, 0xf002464b, 0xc15ebb6a, 0x8a51f3a2,
|
|
0x485e2ed5, 0x119675a3, 0x1f3f555f, 0x39dbc082, 0x09dea445, 0x74382446, 0x3e836c4e, 0x6e43f6cc,
|
|
0x134dd9a2, 0x5876f945, 0x3516f725, 0x670c81d4, 0xaf7f170c, 0xb0e31155, 0xe271894e, 0x615e175e,
|
|
0xb3446fd0, 0x13d58ac1, 0x07cff476, 0xe601e405, 0x8321277d, 0x0997548d, 0xdb55336c, 0xa1271d73,
|
|
0x582463c0, 0xc2543025, 0xf6851c73, 0xe75d32ae, 0xf916b4dd, 0xf558fb94, 0x52111d73, 0x2bc8615d,
|
|
0xd4dcaf42, 0x65e30979, 0x2e1b2360, 0x0da01d73, 0x3f1263c0, 0xd15c735d, 0x9cf2134c, 0x20d0048e,
|
|
0x48cf0125, 0xf585bf5d, 0x12d7645e, 0xd5ace2bc, 0x0c6220b2, 0xbe13bb25, 0x88d0a52e, 0x559425b0,
|
|
0x24079e3d, 0xfaa37557, 0xf219b96a, 0x07e61e4c, 0x3ea1d295, 0x24e0d852, 0xdde212df, 0x44c37758,
|
|
0x55c243a4, 0xe77dd35f, 0x10c19a5f, 0x14d1048e, 0x1d50fbc6, 0x1570456c, 0x567c692e, 0x641d6d5b,
|
|
0xab0c0cc6, 0xab6803c0, 0x136f21b2, 0x6a72545d, 0x21d031b2, 0xff8b5fad, 0xfd0096b2, 0x5f469ac3,
|
|
0x3f6ffa62, 0x7501f863, 0x48471f60, 0xcccff3a2, 0x7f772e44, 0xc1de7757, 0x0c94c3cb, 0x620ac658,
|
|
0x520f1d25, 0x37366c5f, 0x7594b159, 0x3804f23c, 0xb81ff054, 0x96dd32c6, 0x928228bc, 0xf4006e41,
|
|
0x0241c244, 0x8dbdf243, 0x26d1b247, 0xd5381c73, 0xf3136e41, 0x4afa9bc0, 0xa3abf8ce, 0x464ce718,
|
|
0xbd9d017b, 0xf4f26132, 0x141b32d4, 0x2ec50c18, 0x4df119d9, 0x93f81772, 0xd9607c70, 0x3522b648,
|
|
0xf2006e41, 0x761fe550, 0x40104836, 0x55dffe96, 0xc45db158, 0xe75e4836, 0x8dfab7ad, 0xe3eff3a2,
|
|
0x6a6eaa6b, 0x2177d9c7, 0x724ce953, 0xafe918b9, 0xf9368a55, 0xdc0a555f, 0xa4b2d35f, 0x4d87b0b8,
|
|
0x93496a54, 0x5a5c967b, 0xd47028bc, 0x3c44e47a, 0x11c363c0, 0x28107c70, 0xb756a558, 0xb82bbb6a,
|
|
0x285d49ad, 0x3b0ce85c, 0xe53eb45f, 0xa836e23c, 0x409f63c0, 0xc80fbd44, 0x3447f677, 0xe4ca983b,
|
|
0x20673774, 0x96471ed9, 0x4c1d09b0, 0x91d5685d, 0x55beec4d, 0x1008be48, 0x660455d0, 0xf8170fda,
|
|
0x3c21dd3a, 0x8239bb36, 0x9fe7e2bc, 0x900c47ae, 0x6a355643, 0x03dcb318, 0xefca123d, 0x6af8c4d9,
|
|
0x5195e1a5, 0x32e89925, 0x0adc51c0, 0x45d7164c, 0x02495177, 0x8131175e, 0x681b5177, 0x41b6aa6b,
|
|
0x55a9603a, 0x1a0c1c1f, 0xdb4da043, 0x3b9b1632, 0x37e08368, 0x8b54e260, 0xcd14d459, 0x82a663c0,
|
|
0x05adc7dd, 0xe683f3a2, 0x4cddb150, 0x67a1a62e, 0x8c0acd25, 0x07f01f3e, 0x3111296c, 0x2d0fda2e,
|
|
0xa4f163c0, 0xca6db982, 0x78ed2359, 0x7eaa21c1, 0x62e4f3a2, 0x50b81d73, 0xcd074a3a, 0xcb2d904b,
|
|
0x9b3735ce, 0xab67f25c, 0xa0eb5036, 0x62ae5344, 0xe2569bb2, 0xc4422e4e, 0xab5ec8d5, 0xaa81e8dd,
|
|
0xa39264c6, 0xf391563d, 0xb79bbb25, 0x174a7857, 0x0fd4aa43, 0x3e158c32, 0x3ae8b982, 0xea342225,
|
|
0x48d1a842, 0xa52bf0da, 0x4bcb4a4c, 0xa6d3c15b, 0x49a0d35f, 0x97131b4c, 0xf197e252, 0xfe3ebd18,
|
|
0x156dacb8, 0xf63328bc, 0x8e95b84c, 0x560455d0, 0xee918c4e, 0x1d3e435f, 0xe1292f50, 0x0f1ec018,
|
|
0x7d70c60e, 0x6a29d5be, 0xf5fecb18, 0xd6da1f63, 0xccce1c2e, 0x7a289f5e, 0x2775ae47, 0x696df560,
|
|
0x4dbe00ae, 0x474e6c5c, 0x604141d5, 0xaed0c718, 0x8acfd23e, 0x7ff4b84c, 0x4b44fc60, 0xdf58aa4f,
|
|
0x9b7440c0, 0xb811c854, 0xd90ec24e, 0xcff75c46, 0xa5a9cc57, 0xb3d21e4c, 0x794779d9, 0xe5613d46,
|
|
0x9478be43, 0xc5d11152, 0xe85fbb6a, 0x3e1ed052, 0xf747e418, 0x3b9c61c2, 0xb2532949, 0x43077432,
|
|
0xa3db0b68, 0xb3b6e35a, 0x70361b6c, 0x3a8bad3e, 0x23079e3d, 0x09314c32, 0x92f90053, 0x4fc31955,
|
|
0xa59b0905, 0x924128bc, 0x4e63c444, 0x344dc236, 0x43055fcb, 0xdc1a1c73, 0x38aaaa6b, 0xa61cf554,
|
|
0x6d8f63c0, 0x24800a4c, 0x2406f953, 0x9558bb6a, 0x1d281660, 0x054c4954, 0x2de4d418, 0x5fdaf043,
|
|
0xb681356c, 0xf8c3febc, 0x8854f950, 0x55b45d32, 0xde07bcd1, 0x156e4bda, 0x924cf718, 0xc34a0d47,
|
|
0xdd5e1c45, 0x4a0d63c0, 0xaf4b88d5, 0x7852b958, 0x6f205fc0, 0x838af043, 0x45ac795b, 0x43bbaa6b,
|
|
0x998d1c73, 0x11c1d558, 0x749ec444, 0x9a38c232, 0xad2f8c32, 0x3446c658, 0x8fe7a52e, 0x4e846b61,
|
|
0x064b2d05, 0x0fd09740, 0x7a81a743, 0xf1f08e3f, 0x35ca1967, 0x24bdb17d, 0x144c2d05, 0x5505bb46,
|
|
0x13fd1bb9, 0x25de2618, 0xc80a8b4b, 0xcec0fd6c, 0xdc30ad4c, 0x4009f3a2, 0x472f3fb2, 0x5e69c936,
|
|
0x0380796d, 0xa463f8a2, 0xa46fbdc7, 0x3b0cc547, 0xb6644f46, 0x4b90fc47, 0x39e3f563, 0x72d81e56,
|
|
0xe177d9c7, 0x95bff743, 0xea985542, 0xc210ec55, 0xeef70b67, 0xc9eb175e, 0x844d38ad, 0x65afa247,
|
|
0x72da6d26, 0xed165dbc, 0xe8c83ad0, 0x9a8f37d8, 0x925adf50, 0x6b6ac162, 0x4b969e32, 0x735e1c45,
|
|
0x4423ff60, 0xfa57ec6d, 0xcde2fb65, 0x11093257, 0x4748cd5b, 0x720c03dd, 0x8c7b0905, 0xba8b2e48
|
|
};
|
|
|
|
void DumpAddresses()
|
|
{
|
|
int64 nStart = GetTimeMillis();
|
|
|
|
CAddrDB adb;
|
|
adb.Write(addrman);
|
|
|
|
printf("Flushed %d addresses to peers.dat %"PRI64d"ms\n",
|
|
addrman.size(), GetTimeMillis() - nStart);
|
|
}
|
|
|
|
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 ThreadOpenConnections()
|
|
{
|
|
// Connect to specific addresses
|
|
if (mapArgs.count("-connect") && mapMultiArgs["-connect"].size() > 0)
|
|
{
|
|
for (int64 nLoop = 0;; nLoop++)
|
|
{
|
|
ProcessOneShot();
|
|
BOOST_FOREACH(string strAddr, mapMultiArgs["-connect"])
|
|
{
|
|
CAddress addr;
|
|
OpenNetworkConnection(addr, NULL, strAddr.c_str());
|
|
for (int i = 0; i < 10 && i < nLoop; i++)
|
|
{
|
|
MilliSleep(500);
|
|
}
|
|
}
|
|
MilliSleep(500);
|
|
}
|
|
}
|
|
|
|
// Initiate network connections
|
|
int64 nStart = GetTime();
|
|
loop
|
|
{
|
|
ProcessOneShot();
|
|
|
|
MilliSleep(500);
|
|
|
|
CSemaphoreGrant grant(*semOutbound);
|
|
boost::this_thread::interruption_point();
|
|
|
|
// Add seed nodes if IRC isn't working
|
|
if (addrman.size()==0 && (GetTime() - nStart > 60) && !fTestNet)
|
|
{
|
|
std::vector<CAddress> vAdd;
|
|
for (unsigned int i = 0; i < ARRAYLEN(pnSeed); i++)
|
|
{
|
|
// It'll only connect to one or two seed nodes because once it connects,
|
|
// 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()));
|
|
addr.nTime = GetTime()-GetRand(nOneWeek)-nOneWeek;
|
|
vAdd.push_back(addr);
|
|
}
|
|
addrman.Add(vAdd, CNetAddr("127.0.0.1"));
|
|
}
|
|
|
|
//
|
|
// Choose an address to connect to based on most recently seen
|
|
//
|
|
CAddress addrConnect;
|
|
|
|
// 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;
|
|
{
|
|
LOCK(cs_vNodes);
|
|
BOOST_FOREACH(CNode* pnode, vNodes) {
|
|
if (!pnode->fInbound) {
|
|
setConnected.insert(pnode->addr.GetGroup());
|
|
nOutbound++;
|
|
}
|
|
}
|
|
}
|
|
|
|
int64 nANow = GetAdjustedTime();
|
|
|
|
int nTries = 0;
|
|
loop
|
|
{
|
|
// 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.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)
|
|
continue;
|
|
|
|
// do not allow non-default ports, unless after 50 invalid addresses selected already
|
|
if (addr.GetPort() != GetDefaultPort() && nTries < 50)
|
|
continue;
|
|
|
|
addrConnect = addr;
|
|
break;
|
|
}
|
|
|
|
if (addrConnect.IsValid())
|
|
OpenNetworkConnection(addrConnect, &grant);
|
|
}
|
|
}
|
|
|
|
void ThreadOpenAddedConnections()
|
|
{
|
|
{
|
|
LOCK(cs_vAddedNodes);
|
|
vAddedNodes = mapMultiArgs["-addnode"];
|
|
}
|
|
|
|
if (HaveNameProxy()) {
|
|
while(true) {
|
|
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());
|
|
MilliSleep(500);
|
|
}
|
|
MilliSleep(120000); // Retry every 2 minutes
|
|
}
|
|
}
|
|
|
|
for (unsigned int i = 0; true; i++)
|
|
{
|
|
list<string> lAddresses(0);
|
|
{
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
// 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 fNameLookup)
|
|
{
|
|
LOCK(cs_vNodes);
|
|
BOOST_FOREACH(CNode* pnode, vNodes)
|
|
for (list<vector<CService> >::iterator it = lservAddressesToAdd.begin(); it != lservAddressesToAdd.end(); it++)
|
|
BOOST_FOREACH(CService& addrNode, *(it))
|
|
if (pnode->addr == addrNode)
|
|
{
|
|
it = lservAddressesToAdd.erase(it);
|
|
it--;
|
|
break;
|
|
}
|
|
}
|
|
BOOST_FOREACH(vector<CService>& vserv, lservAddressesToAdd)
|
|
{
|
|
CSemaphoreGrant grant(*semOutbound);
|
|
OpenNetworkConnection(CAddress(vserv[i % vserv.size()]), &grant);
|
|
MilliSleep(500);
|
|
}
|
|
MilliSleep(120000); // Retry every 2 minutes
|
|
}
|
|
}
|
|
|
|
// 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
|
|
//
|
|
boost::this_thread::interruption_point();
|
|
if (!strDest)
|
|
if (IsLocal(addrConnect) ||
|
|
FindNode((CNetAddr)addrConnect) || CNode::IsBanned(addrConnect) ||
|
|
FindNode(addrConnect.ToStringIPPort().c_str()))
|
|
return false;
|
|
if (strDest && FindNode(strDest))
|
|
return false;
|
|
|
|
CNode* pnode = ConnectNode(addrConnect, strDest);
|
|
boost::this_thread::interruption_point();
|
|
|
|
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
|
|
double static NodeSyncScore(const CNode *pnode) {
|
|
return -pnode->nLastRecv;
|
|
}
|
|
|
|
void static StartSync(const vector<CNode*> &vNodes) {
|
|
CNode *pnodeNewSync = NULL;
|
|
double dBestScore = 0;
|
|
|
|
// fImporting and fReindex are accessed out of cs_main here, but only
|
|
// as an optimization - they are checked again in SendMessages.
|
|
if (fImporting || fReindex)
|
|
return;
|
|
|
|
// 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
|
|
double dScore = NodeSyncScore(pnode);
|
|
if (pnodeNewSync == NULL || dScore > dBestScore) {
|
|
pnodeNewSync = pnode;
|
|
dBestScore = dScore;
|
|
}
|
|
}
|
|
}
|
|
// if a new sync candidate was found, start sync!
|
|
if (pnodeNewSync) {
|
|
pnodeNewSync->fStartSync = true;
|
|
pnodeSync = pnodeNewSync;
|
|
}
|
|
}
|
|
|
|
void ThreadMessageHandler()
|
|
{
|
|
SetThreadPriority(THREAD_PRIORITY_BELOW_NORMAL);
|
|
while (true)
|
|
{
|
|
bool fHaveSyncNode = false;
|
|
|
|
vector<CNode*> vNodesCopy;
|
|
{
|
|
LOCK(cs_vNodes);
|
|
vNodesCopy = vNodes;
|
|
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())
|
|
pnodeTrickle = vNodesCopy[GetRand(vNodesCopy.size())];
|
|
|
|
bool fSleep = true;
|
|
|
|
BOOST_FOREACH(CNode* pnode, vNodesCopy)
|
|
{
|
|
if (pnode->fDisconnect)
|
|
continue;
|
|
|
|
// Receive messages
|
|
{
|
|
TRY_LOCK(pnode->cs_vRecvMsg, lockRecv);
|
|
if (lockRecv)
|
|
{
|
|
if (!ProcessMessages(pnode))
|
|
pnode->CloseSocketDisconnect();
|
|
|
|
if (pnode->nSendSize < SendBufferSize())
|
|
{
|
|
if (!pnode->vRecvGetData.empty() || (!pnode->vRecvMsg.empty() && pnode->vRecvMsg[0].complete()))
|
|
{
|
|
fSleep = false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
boost::this_thread::interruption_point();
|
|
|
|
// Send messages
|
|
{
|
|
TRY_LOCK(pnode->cs_vSend, lockSend);
|
|
if (lockSend)
|
|
SendMessages(pnode, pnode == pnodeTrickle);
|
|
}
|
|
boost::this_thread::interruption_point();
|
|
}
|
|
|
|
{
|
|
LOCK(cs_vNodes);
|
|
BOOST_FOREACH(CNode* pnode, vNodesCopy)
|
|
pnode->Release();
|
|
}
|
|
|
|
if (fSleep)
|
|
MilliSleep(100);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
bool BindListenPort(const CService &addrBind, string& strError)
|
|
{
|
|
strError = "";
|
|
int nOne = 1;
|
|
|
|
// 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: bind address family for %s not supported", addrBind.ToString().c_str());
|
|
printf("%s\n", strError.c_str());
|
|
return false;
|
|
}
|
|
|
|
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());
|
|
printf("%s\n", strError.c_str());
|
|
return false;
|
|
}
|
|
|
|
#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.
|
|
setsockopt(hListenSocket, SOL_SOCKET, SO_REUSEADDR, (void*)&nOne, sizeof(int));
|
|
#endif
|
|
|
|
|
|
#ifdef WIN32
|
|
// 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)
|
|
#endif
|
|
{
|
|
strError = strprintf("Error: Couldn't set properties on socket for incoming connections (error %d)", WSAGetLastError());
|
|
printf("%s\n", strError.c_str());
|
|
return false;
|
|
}
|
|
|
|
#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 = 10 /* PROTECTION_LEVEL_UNRESTRICTED */;
|
|
int nParameterId = 23 /* IPV6_PROTECTION_LEVEl */;
|
|
// this call is allowed to fail
|
|
setsockopt(hListenSocket, IPPROTO_IPV6, nParameterId, (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 %s on this computer. Litecoin is probably already running."), addrBind.ToString().c_str());
|
|
else
|
|
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());
|
|
return false;
|
|
}
|
|
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());
|
|
return false;
|
|
}
|
|
|
|
vhListenSocket.push_back(hListenSocket);
|
|
|
|
if (addrBind.IsRoutable() && fDiscover)
|
|
AddLocal(addrBind, LOCAL_BIND);
|
|
|
|
return true;
|
|
}
|
|
|
|
void static Discover()
|
|
{
|
|
if (!fDiscover)
|
|
return;
|
|
|
|
#ifdef WIN32
|
|
// 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)
|
|
{
|
|
AddLocal(addr, LOCAL_IF);
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
// Get local host ip
|
|
struct ifaddrs* myaddrs;
|
|
if (getifaddrs(&myaddrs) == 0)
|
|
{
|
|
for (struct ifaddrs* ifa = myaddrs; ifa != NULL; ifa = ifa->ifa_next)
|
|
{
|
|
if (ifa->ifa_addr == NULL) continue;
|
|
if ((ifa->ifa_flags & IFF_UP) == 0) continue;
|
|
if (strcmp(ifa->ifa_name, "lo") == 0) continue;
|
|
if (strcmp(ifa->ifa_name, "lo0") == 0) continue;
|
|
if (ifa->ifa_addr->sa_family == AF_INET)
|
|
{
|
|
struct sockaddr_in* s4 = (struct sockaddr_in*)(ifa->ifa_addr);
|
|
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);
|
|
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
|
|
|
|
// Don't use external IPv4 discovery, when -onlynet="IPv6"
|
|
if (!IsLimited(NET_IPV4))
|
|
NewThread(ThreadGetMyExternalIP, NULL);
|
|
}
|
|
|
|
void StartNode(boost::thread_group& threadGroup)
|
|
{
|
|
if (semOutbound == NULL) {
|
|
// initialize semaphore
|
|
int nMaxOutbound = min(MAX_OUTBOUND_CONNECTIONS, nMaxConnections);
|
|
semOutbound = new CSemaphore(nMaxOutbound);
|
|
}
|
|
|
|
if (pnodeLocalHost == NULL)
|
|
pnodeLocalHost = new CNode(INVALID_SOCKET, CAddress(CService("127.0.0.1", 0), nLocalServices));
|
|
|
|
Discover();
|
|
|
|
//
|
|
// Start threads
|
|
//
|
|
|
|
if (!GetBoolArg("-dnsseed", true))
|
|
printf("DNS seeding disabled\n");
|
|
else
|
|
threadGroup.create_thread(boost::bind(&TraceThread<boost::function<void()> >, "dnsseed", &ThreadDNSAddressSeed));
|
|
|
|
#ifdef USE_UPNP
|
|
// Map ports with UPnP
|
|
MapPort(GetBoolArg("-upnp", USE_UPNP));
|
|
#endif
|
|
|
|
// Send and receive from sockets, accept connections
|
|
threadGroup.create_thread(boost::bind(&TraceThread<void (*)()>, "net", &ThreadSocketHandler));
|
|
|
|
// Initiate outbound connections from -addnode
|
|
threadGroup.create_thread(boost::bind(&TraceThread<void (*)()>, "addcon", &ThreadOpenAddedConnections));
|
|
|
|
// Initiate outbound connections
|
|
threadGroup.create_thread(boost::bind(&TraceThread<void (*)()>, "opencon", &ThreadOpenConnections));
|
|
|
|
// Process messages
|
|
threadGroup.create_thread(boost::bind(&TraceThread<void (*)()>, "msghand", &ThreadMessageHandler));
|
|
|
|
// Dump network addresses
|
|
threadGroup.create_thread(boost::bind(&LoopForever<void (*)()>, "dumpaddr", &DumpAddresses, DUMP_ADDRESSES_INTERVAL * 1000));
|
|
}
|
|
|
|
bool StopNode()
|
|
{
|
|
printf("StopNode()\n");
|
|
GenerateBitcoins(false, NULL);
|
|
MapPort(false);
|
|
nTransactionsUpdated++;
|
|
if (semOutbound)
|
|
for (int i=0; i<MAX_OUTBOUND_CONNECTIONS; i++)
|
|
semOutbound->post();
|
|
MilliSleep(50);
|
|
DumpAddresses();
|
|
|
|
return true;
|
|
}
|
|
|
|
class CNetCleanup
|
|
{
|
|
public:
|
|
CNetCleanup()
|
|
{
|
|
}
|
|
~CNetCleanup()
|
|
{
|
|
// Close sockets
|
|
BOOST_FOREACH(CNode* pnode, vNodes)
|
|
if (pnode->hSocket != INVALID_SOCKET)
|
|
closesocket(pnode->hSocket);
|
|
BOOST_FOREACH(SOCKET hListenSocket, vhListenSocket)
|
|
if (hListenSocket != INVALID_SOCKET)
|
|
if (closesocket(hListenSocket) == SOCKET_ERROR)
|
|
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
|
|
WSACleanup();
|
|
#endif
|
|
}
|
|
}
|
|
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));
|
|
}
|
|
LOCK(cs_vNodes);
|
|
BOOST_FOREACH(CNode* pnode, vNodes)
|
|
{
|
|
if(!pnode->fRelayTxes)
|
|
continue;
|
|
LOCK(pnode->cs_filter);
|
|
if (pnode->pfilter)
|
|
{
|
|
if (pnode->pfilter->IsRelevantAndUpdate(tx, hash))
|
|
pnode->PushInventory(inv);
|
|
} else
|
|
pnode->PushInventory(inv);
|
|
}
|
|
}
|