1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Copyright (c) 2011 The Bitcoin developers
3 // Distributed under the MIT/X11 software license, see the accompanying
4 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
18 #include <miniupnpc/miniwget.h>
19 #include <miniupnpc/miniupnpc.h>
20 #include <miniupnpc/upnpcommands.h>
21 #include <miniupnpc/upnperrors.h>
25 using namespace boost;
27 static const int MAX_OUTBOUND_CONNECTIONS = 8;
29 void ThreadMessageHandler2(void* parg);
30 void ThreadSocketHandler2(void* parg);
31 void ThreadOpenConnections2(void* parg);
33 void ThreadMapPort2(void* parg);
35 void ThreadDNSAddressSeed2(void* parg);
36 bool OpenNetworkConnection(const CAddress& addrConnect);
43 // Global state variables
46 bool fAllowDNS = false;
47 uint64 nLocalServices = (fClient ? 0 : NODE_NETWORK);
48 CAddress addrLocalHost("0.0.0.0", 0, false, nLocalServices);
49 static CNode* pnodeLocalHost = NULL;
50 uint64 nLocalHostNonce = 0;
51 array<int, 10> vnThreadsRunning;
52 static SOCKET hListenSocket = INVALID_SOCKET;
54 vector<CNode*> vNodes;
55 CCriticalSection cs_vNodes;
56 map<vector<unsigned char>, CAddress> mapAddresses;
57 CCriticalSection cs_mapAddresses;
58 map<CInv, CDataStream> mapRelay;
59 deque<pair<int64, CInv> > vRelayExpiration;
60 CCriticalSection cs_mapRelay;
61 map<CInv, int64> mapAlreadyAskedFor;
64 int fUseProxy = false;
65 int nConnectTimeout = 5000;
66 CAddress addrProxy("127.0.0.1",9050);
71 unsigned short GetListenPort()
73 return (unsigned short)(GetArg("-port", GetDefaultPort()));
76 void CNode::PushGetBlocks(CBlockIndex* pindexBegin, uint256 hashEnd)
78 // Filter out duplicate requests
79 if (pindexBegin == pindexLastGetBlocksBegin && hashEnd == hashLastGetBlocksEnd)
81 pindexLastGetBlocksBegin = pindexBegin;
82 hashLastGetBlocksEnd = hashEnd;
84 PushMessage("getblocks", CBlockLocator(pindexBegin), hashEnd);
91 bool ConnectSocket(const CAddress& addrConnect, SOCKET& hSocketRet, int nTimeout)
93 hSocketRet = INVALID_SOCKET;
95 SOCKET hSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
96 if (hSocket == INVALID_SOCKET)
100 setsockopt(hSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(int));
103 bool fProxy = (fUseProxy && addrConnect.IsRoutable());
104 struct sockaddr_in sockaddr = (fProxy ? addrProxy.GetSockAddr() : addrConnect.GetSockAddr());
107 u_long fNonblock = 1;
108 if (ioctlsocket(hSocket, FIONBIO, &fNonblock) == SOCKET_ERROR)
110 int fFlags = fcntl(hSocket, F_GETFL, 0);
111 if (fcntl(hSocket, F_SETFL, fFlags | O_NONBLOCK) == -1)
114 closesocket(hSocket);
119 if (connect(hSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR)
121 // WSAEINVAL is here because some legacy version of winsock uses it
122 if (WSAGetLastError() == WSAEINPROGRESS || WSAGetLastError() == WSAEWOULDBLOCK || WSAGetLastError() == WSAEINVAL)
124 struct timeval timeout;
125 timeout.tv_sec = nTimeout / 1000;
126 timeout.tv_usec = (nTimeout % 1000) * 1000;
130 FD_SET(hSocket, &fdset);
131 int nRet = select(hSocket + 1, NULL, &fdset, NULL, &timeout);
134 printf("connection timeout\n");
135 closesocket(hSocket);
138 if (nRet == SOCKET_ERROR)
140 printf("select() for connection failed: %i\n",WSAGetLastError());
141 closesocket(hSocket);
144 socklen_t nRetSize = sizeof(nRet);
146 if (getsockopt(hSocket, SOL_SOCKET, SO_ERROR, (char*)(&nRet), &nRetSize) == SOCKET_ERROR)
148 if (getsockopt(hSocket, SOL_SOCKET, SO_ERROR, &nRet, &nRetSize) == SOCKET_ERROR)
151 printf("getsockopt() for connection failed: %i\n",WSAGetLastError());
152 closesocket(hSocket);
157 printf("connect() failed after select(): %s\n",strerror(nRet));
158 closesocket(hSocket);
163 else if (WSAGetLastError() != WSAEISCONN)
168 printf("connect() failed: %i\n",WSAGetLastError());
169 closesocket(hSocket);
175 this isn't even strictly necessary
176 CNode::ConnectNode immediately turns the socket back to non-blocking
177 but we'll turn it back to blocking just in case
181 if (ioctlsocket(hSocket, FIONBIO, &fNonblock) == SOCKET_ERROR)
183 fFlags = fcntl(hSocket, F_GETFL, 0);
184 if (fcntl(hSocket, F_SETFL, fFlags & !O_NONBLOCK) == SOCKET_ERROR)
187 closesocket(hSocket);
193 printf("proxy connecting %s\n", addrConnect.ToString().c_str());
194 char pszSocks4IP[] = "\4\1\0\0\0\0\0\0user";
195 memcpy(pszSocks4IP + 2, &addrConnect.port, 2);
196 memcpy(pszSocks4IP + 4, &addrConnect.ip, 4);
197 char* pszSocks4 = pszSocks4IP;
198 int nSize = sizeof(pszSocks4IP);
200 int ret = send(hSocket, pszSocks4, nSize, MSG_NOSIGNAL);
203 closesocket(hSocket);
204 return error("Error sending to proxy");
207 if (recv(hSocket, pchRet, 8, 0) != 8)
209 closesocket(hSocket);
210 return error("Error reading proxy response");
212 if (pchRet[1] != 0x5a)
214 closesocket(hSocket);
215 if (pchRet[1] != 0x5b)
216 printf("ERROR: Proxy returned error %d\n", pchRet[1]);
219 printf("proxy connected %s\n", addrConnect.ToString().c_str());
222 hSocketRet = hSocket;
226 // portDefault is in host order
227 bool Lookup(const char *pszName, vector<CAddress>& vaddr, int nServices, int nMaxSolutions, bool fAllowLookup, int portDefault, bool fAllowPort)
232 int port = portDefault;
235 strlcpy(psz, pszName, sizeof(psz));
238 char* pszColon = strrchr(psz+1,':');
239 char *pszPortEnd = NULL;
240 int portParsed = pszColon ? strtoul(pszColon+1, &pszPortEnd, 10) : 0;
241 if (pszColon && pszPortEnd && pszPortEnd[0] == 0)
243 if (psz[0] == '[' && pszColon[-1] == ']')
245 // Future: enable IPv6 colon-notation inside []
252 if (port < 0 || port > USHRT_MAX)
257 unsigned int addrIP = inet_addr(pszHost);
258 if (addrIP != INADDR_NONE)
260 // valid IP address passed
261 vaddr.push_back(CAddress(addrIP, port, nServices));
268 struct hostent* phostent = gethostbyname(pszHost);
272 if (phostent->h_addrtype != AF_INET)
275 char** ppAddr = phostent->h_addr_list;
276 while (*ppAddr != NULL && vaddr.size() != nMaxSolutions)
278 CAddress addr(((struct in_addr*)ppAddr[0])->s_addr, port, nServices);
280 vaddr.push_back(addr);
284 return (vaddr.size() > 0);
287 // portDefault is in host order
288 bool Lookup(const char *pszName, CAddress& addr, int nServices, bool fAllowLookup, int portDefault, bool fAllowPort)
290 vector<CAddress> vaddr;
291 bool fRet = Lookup(pszName, vaddr, nServices, 1, fAllowLookup, portDefault, fAllowPort);
297 bool GetMyExternalIP2(const CAddress& addrConnect, const char* pszGet, const char* pszKeyword, unsigned int& ipRet)
300 if (!ConnectSocket(addrConnect, hSocket))
301 return error("GetMyExternalIP() : connection to %s failed", addrConnect.ToString().c_str());
303 send(hSocket, pszGet, strlen(pszGet), MSG_NOSIGNAL);
306 while (RecvLine(hSocket, strLine))
308 if (strLine.empty()) // HTTP response is separated from headers by blank line
312 if (!RecvLine(hSocket, strLine))
314 closesocket(hSocket);
317 if (pszKeyword == NULL)
319 if (strLine.find(pszKeyword) != -1)
321 strLine = strLine.substr(strLine.find(pszKeyword) + strlen(pszKeyword));
325 closesocket(hSocket);
326 if (strLine.find("<") != -1)
327 strLine = strLine.substr(0, strLine.find("<"));
328 strLine = strLine.substr(strspn(strLine.c_str(), " \t\n\r"));
329 while (strLine.size() > 0 && isspace(strLine[strLine.size()-1]))
330 strLine.resize(strLine.size()-1);
331 CAddress addr(strLine,0,true);
332 printf("GetMyExternalIP() received [%s] %s\n", strLine.c_str(), addr.ToString().c_str());
333 if (addr.ip == 0 || addr.ip == INADDR_NONE || !addr.IsRoutable())
339 closesocket(hSocket);
340 return error("GetMyExternalIP() : connection closed");
343 // We now get our external IP from the IRC server first and only use this as a backup
344 bool GetMyExternalIP(unsigned int& ipRet)
346 CAddress addrConnect;
348 const char* pszKeyword;
353 for (int nLookup = 0; nLookup <= 1; nLookup++)
354 for (int nHost = 1; nHost <= 2; nHost++)
356 // We should be phasing out our use of sites like these. If we need
357 // replacements, we should ask for volunteers to put this simple
358 // php file on their webserver that prints the client IP:
359 // <?php echo $_SERVER["REMOTE_ADDR"]; ?>
362 addrConnect = CAddress("91.198.22.70",80); // checkip.dyndns.org
366 CAddress addrIP("checkip.dyndns.org", 80, true);
367 if (addrIP.IsValid())
368 addrConnect = addrIP;
371 pszGet = "GET / HTTP/1.1\r\n"
372 "Host: checkip.dyndns.org\r\n"
373 "User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n"
374 "Connection: close\r\n"
377 pszKeyword = "Address:";
381 addrConnect = CAddress("74.208.43.192", 80); // www.showmyip.com
385 CAddress addrIP("www.showmyip.com", 80, true);
386 if (addrIP.IsValid())
387 addrConnect = addrIP;
390 pszGet = "GET /simple/ HTTP/1.1\r\n"
391 "Host: www.showmyip.com\r\n"
392 "User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n"
393 "Connection: close\r\n"
396 pszKeyword = NULL; // Returns just IP address
399 if (GetMyExternalIP2(addrConnect, pszGet, pszKeyword, ipRet))
406 void ThreadGetMyExternalIP(void* parg)
408 // Wait for IRC to get it first
409 if (!GetBoolArg("-noirc"))
411 for (int i = 0; i < 2 * 60; i++)
414 if (fGotExternalIP || fShutdown)
419 // Fallback in case IRC fails to get it
420 if (GetMyExternalIP(addrLocalHost.ip))
422 printf("GetMyExternalIP() returned %s\n", addrLocalHost.ToStringIP().c_str());
423 if (addrLocalHost.IsRoutable())
425 // If we already connected to a few before we had our IP, go back and addr them.
426 // setAddrKnown automatically filters any duplicate sends.
427 CAddress addr(addrLocalHost);
428 addr.nTime = GetAdjustedTime();
429 CRITICAL_BLOCK(cs_vNodes)
430 BOOST_FOREACH(CNode* pnode, vNodes)
431 pnode->PushAddress(addr);
440 bool AddAddress(CAddress addr, int64 nTimePenalty, CAddrDB *pAddrDB)
442 if (!addr.IsRoutable())
444 if (addr.ip == addrLocalHost.ip)
446 addr.nTime = max((int64)0, (int64)addr.nTime - nTimePenalty);
447 bool fUpdated = false;
449 CAddress addrFound = addr;
451 CRITICAL_BLOCK(cs_mapAddresses)
453 map<vector<unsigned char>, CAddress>::iterator it = mapAddresses.find(addr.GetKey());
454 if (it == mapAddresses.end())
457 printf("AddAddress(%s)\n", addr.ToString().c_str());
458 mapAddresses.insert(make_pair(addr.GetKey(), addr));
464 addrFound = (*it).second;
465 if ((addrFound.nServices | addr.nServices) != addrFound.nServices)
467 // Services have been added
468 addrFound.nServices |= addr.nServices;
471 bool fCurrentlyOnline = (GetAdjustedTime() - addr.nTime < 24 * 60 * 60);
472 int64 nUpdateInterval = (fCurrentlyOnline ? 60 * 60 : 24 * 60 * 60);
473 if (addrFound.nTime < addr.nTime - nUpdateInterval)
475 // Periodically update most recently seen time
476 addrFound.nTime = addr.nTime;
481 // There is a nasty deadlock bug if this is done inside the cs_mapAddresses
483 // Thread 1: begin db transaction (locks inside-db-mutex)
484 // then AddAddress (locks cs_mapAddresses)
485 // Thread 2: AddAddress (locks cs_mapAddresses)
486 // ... then db operation hangs waiting for inside-db-mutex
490 pAddrDB->WriteAddress(addrFound);
492 CAddrDB().WriteAddress(addrFound);
497 void AddressCurrentlyConnected(const CAddress& addr)
499 CAddress *paddrFound = NULL;
501 CRITICAL_BLOCK(cs_mapAddresses)
503 // Only if it's been published already
504 map<vector<unsigned char>, CAddress>::iterator it = mapAddresses.find(addr.GetKey());
505 if (it != mapAddresses.end())
506 paddrFound = &(*it).second;
511 int64 nUpdateInterval = 20 * 60;
512 if (paddrFound->nTime < GetAdjustedTime() - nUpdateInterval)
514 // Periodically update most recently seen time
515 paddrFound->nTime = GetAdjustedTime();
517 addrdb.WriteAddress(*paddrFound);
526 void AbandonRequests(void (*fn)(void*, CDataStream&), void* param1)
528 // If the dialog might get closed before the reply comes back,
529 // call this in the destructor so it doesn't get called after it's deleted.
530 CRITICAL_BLOCK(cs_vNodes)
532 BOOST_FOREACH(CNode* pnode, vNodes)
534 CRITICAL_BLOCK(pnode->cs_mapRequests)
536 for (map<uint256, CRequestTracker>::iterator mi = pnode->mapRequests.begin(); mi != pnode->mapRequests.end();)
538 CRequestTracker& tracker = (*mi).second;
539 if (tracker.fn == fn && tracker.param1 == param1)
540 pnode->mapRequests.erase(mi++);
556 // Subscription methods for the broadcast and subscription system.
557 // Channel numbers are message numbers, i.e. MSG_TABLE and MSG_PRODUCT.
559 // The subscription system uses a meet-in-the-middle strategy.
560 // With 100,000 nodes, if senders broadcast to 1000 random nodes and receivers
561 // subscribe to 1000 random nodes, 99.995% (1 - 0.99^1000) of messages will get through.
564 bool AnySubscribed(unsigned int nChannel)
566 if (pnodeLocalHost->IsSubscribed(nChannel))
568 CRITICAL_BLOCK(cs_vNodes)
569 BOOST_FOREACH(CNode* pnode, vNodes)
570 if (pnode->IsSubscribed(nChannel))
575 bool CNode::IsSubscribed(unsigned int nChannel)
577 if (nChannel >= vfSubscribe.size())
579 return vfSubscribe[nChannel];
582 void CNode::Subscribe(unsigned int nChannel, unsigned int nHops)
584 if (nChannel >= vfSubscribe.size())
587 if (!AnySubscribed(nChannel))
590 CRITICAL_BLOCK(cs_vNodes)
591 BOOST_FOREACH(CNode* pnode, vNodes)
593 pnode->PushMessage("subscribe", nChannel, nHops);
596 vfSubscribe[nChannel] = true;
599 void CNode::CancelSubscribe(unsigned int nChannel)
601 if (nChannel >= vfSubscribe.size())
604 // Prevent from relaying cancel if wasn't subscribed
605 if (!vfSubscribe[nChannel])
607 vfSubscribe[nChannel] = false;
609 if (!AnySubscribed(nChannel))
611 // Relay subscription cancel
612 CRITICAL_BLOCK(cs_vNodes)
613 BOOST_FOREACH(CNode* pnode, vNodes)
615 pnode->PushMessage("sub-cancel", nChannel);
627 CNode* FindNode(unsigned int ip)
629 CRITICAL_BLOCK(cs_vNodes)
631 BOOST_FOREACH(CNode* pnode, vNodes)
632 if (pnode->addr.ip == ip)
638 CNode* FindNode(CAddress addr)
640 CRITICAL_BLOCK(cs_vNodes)
642 BOOST_FOREACH(CNode* pnode, vNodes)
643 if (pnode->addr == addr)
649 CNode* ConnectNode(CAddress addrConnect, int64 nTimeout)
651 if (addrConnect.ip == addrLocalHost.ip)
654 // Look for an existing connection
655 CNode* pnode = FindNode(addrConnect.ip);
659 pnode->AddRef(nTimeout);
666 printf("trying connection %s lastseen=%.1fhrs lasttry=%.1fhrs\n",
667 addrConnect.ToString().c_str(),
668 (double)(addrConnect.nTime - GetAdjustedTime())/3600.0,
669 (double)(addrConnect.nLastTry - GetAdjustedTime())/3600.0);
671 CRITICAL_BLOCK(cs_mapAddresses)
672 mapAddresses[addrConnect.GetKey()].nLastTry = GetAdjustedTime();
676 if (ConnectSocket(addrConnect, hSocket))
679 printf("connected %s\n", addrConnect.ToString().c_str());
681 // Set to nonblocking
684 if (ioctlsocket(hSocket, FIONBIO, &nOne) == SOCKET_ERROR)
685 printf("ConnectSocket() : ioctlsocket nonblocking setting failed, error %d\n", WSAGetLastError());
687 if (fcntl(hSocket, F_SETFL, O_NONBLOCK) == SOCKET_ERROR)
688 printf("ConnectSocket() : fcntl nonblocking setting failed, error %d\n", errno);
692 CNode* pnode = new CNode(hSocket, addrConnect, false);
694 pnode->AddRef(nTimeout);
697 CRITICAL_BLOCK(cs_vNodes)
698 vNodes.push_back(pnode);
700 pnode->nTimeConnected = GetTime();
709 void CNode::CloseSocketDisconnect()
712 if (hSocket != INVALID_SOCKET)
715 printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
716 printf("disconnecting node %s\n", addr.ToString().c_str());
717 closesocket(hSocket);
718 hSocket = INVALID_SOCKET;
722 void CNode::Cleanup()
724 // All of a nodes broadcasts and subscriptions are automatically torn down
725 // when it goes down, so a node has to stay up to keep its broadcast going.
727 // Cancel subscriptions
728 for (unsigned int nChannel = 0; nChannel < vfSubscribe.size(); nChannel++)
729 if (vfSubscribe[nChannel])
730 CancelSubscribe(nChannel);
734 std::map<unsigned int, int64> CNode::setBanned;
735 CCriticalSection CNode::cs_setBanned;
737 void CNode::ClearBanned()
742 bool CNode::IsBanned(unsigned int ip)
744 bool fResult = false;
745 CRITICAL_BLOCK(cs_setBanned)
747 std::map<unsigned int, int64>::iterator i = setBanned.find(ip);
748 if (i != setBanned.end())
750 int64 t = (*i).second;
758 bool CNode::Misbehaving(int howmuch)
762 printf("Warning: local node %s misbehaving\n", addr.ToString().c_str());
766 nMisbehavior += howmuch;
767 if (nMisbehavior >= GetArg("-banscore", 100))
769 int64 banTime = GetTime()+GetArg("-bantime", 60*60*24); // Default 24-hour ban
770 CRITICAL_BLOCK(cs_setBanned)
771 if (setBanned[addr.ip] < banTime)
772 setBanned[addr.ip] = banTime;
773 CloseSocketDisconnect();
774 printf("Disconnected %s for misbehavior (score=%d)\n", addr.ToString().c_str(), nMisbehavior);
791 void ThreadSocketHandler(void* parg)
793 IMPLEMENT_RANDOMIZE_STACK(ThreadSocketHandler(parg));
796 vnThreadsRunning[0]++;
797 ThreadSocketHandler2(parg);
798 vnThreadsRunning[0]--;
800 catch (std::exception& e) {
801 vnThreadsRunning[0]--;
802 PrintException(&e, "ThreadSocketHandler()");
804 vnThreadsRunning[0]--;
805 throw; // support pthread_cancel()
807 printf("ThreadSocketHandler exiting\n");
810 void ThreadSocketHandler2(void* parg)
812 printf("ThreadSocketHandler started\n");
813 list<CNode*> vNodesDisconnected;
814 int nPrevNodeCount = 0;
821 CRITICAL_BLOCK(cs_vNodes)
823 // Disconnect unused nodes
824 vector<CNode*> vNodesCopy = vNodes;
825 BOOST_FOREACH(CNode* pnode, vNodesCopy)
827 if (pnode->fDisconnect ||
828 (pnode->GetRefCount() <= 0 && pnode->vRecv.empty() && pnode->vSend.empty()))
830 // remove from vNodes
831 vNodes.erase(remove(vNodes.begin(), vNodes.end(), pnode), vNodes.end());
833 // close socket and cleanup
834 pnode->CloseSocketDisconnect();
837 // hold in disconnected pool until all refs are released
838 pnode->nReleaseTime = max(pnode->nReleaseTime, GetTime() + 15 * 60);
839 if (pnode->fNetworkNode || pnode->fInbound)
841 vNodesDisconnected.push_back(pnode);
845 // Delete disconnected nodes
846 list<CNode*> vNodesDisconnectedCopy = vNodesDisconnected;
847 BOOST_FOREACH(CNode* pnode, vNodesDisconnectedCopy)
849 // wait until threads are done using it
850 if (pnode->GetRefCount() <= 0)
852 bool fDelete = false;
853 TRY_CRITICAL_BLOCK(pnode->cs_vSend)
854 TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
855 TRY_CRITICAL_BLOCK(pnode->cs_mapRequests)
856 TRY_CRITICAL_BLOCK(pnode->cs_inventory)
860 vNodesDisconnected.remove(pnode);
866 if (vNodes.size() != nPrevNodeCount)
868 nPrevNodeCount = vNodes.size();
874 // Find which sockets have data to receive
876 struct timeval timeout;
878 timeout.tv_usec = 50000; // frequency to poll pnode->vSend
885 FD_ZERO(&fdsetError);
886 SOCKET hSocketMax = 0;
888 if(hListenSocket != INVALID_SOCKET)
889 FD_SET(hListenSocket, &fdsetRecv);
890 hSocketMax = max(hSocketMax, hListenSocket);
891 CRITICAL_BLOCK(cs_vNodes)
893 BOOST_FOREACH(CNode* pnode, vNodes)
895 if (pnode->hSocket == INVALID_SOCKET)
897 FD_SET(pnode->hSocket, &fdsetRecv);
898 FD_SET(pnode->hSocket, &fdsetError);
899 hSocketMax = max(hSocketMax, pnode->hSocket);
900 TRY_CRITICAL_BLOCK(pnode->cs_vSend)
901 if (!pnode->vSend.empty())
902 FD_SET(pnode->hSocket, &fdsetSend);
906 vnThreadsRunning[0]--;
907 int nSelect = select(hSocketMax + 1, &fdsetRecv, &fdsetSend, &fdsetError, &timeout);
908 vnThreadsRunning[0]++;
911 if (nSelect == SOCKET_ERROR)
913 int nErr = WSAGetLastError();
916 printf("socket select error %d\n", nErr);
917 for (int i = 0; i <= hSocketMax; i++)
918 FD_SET(i, &fdsetRecv);
921 FD_ZERO(&fdsetError);
922 Sleep(timeout.tv_usec/1000);
927 // Accept new connections
929 if (hListenSocket != INVALID_SOCKET && FD_ISSET(hListenSocket, &fdsetRecv))
931 struct sockaddr_in sockaddr;
932 socklen_t len = sizeof(sockaddr);
933 SOCKET hSocket = accept(hListenSocket, (struct sockaddr*)&sockaddr, &len);
934 CAddress addr(sockaddr);
937 CRITICAL_BLOCK(cs_vNodes)
938 BOOST_FOREACH(CNode* pnode, vNodes)
941 if (hSocket == INVALID_SOCKET)
943 if (WSAGetLastError() != WSAEWOULDBLOCK)
944 printf("socket error accept failed: %d\n", WSAGetLastError());
946 else if (nInbound >= GetArg("-maxconnections", 125) - MAX_OUTBOUND_CONNECTIONS)
948 closesocket(hSocket);
950 else if (CNode::IsBanned(addr.ip))
952 printf("connetion from %s dropped (banned)\n", addr.ToString().c_str());
953 closesocket(hSocket);
957 printf("accepted connection %s\n", addr.ToString().c_str());
958 CNode* pnode = new CNode(hSocket, addr, true);
960 CRITICAL_BLOCK(cs_vNodes)
961 vNodes.push_back(pnode);
967 // Service each socket
969 vector<CNode*> vNodesCopy;
970 CRITICAL_BLOCK(cs_vNodes)
973 BOOST_FOREACH(CNode* pnode, vNodesCopy)
976 BOOST_FOREACH(CNode* pnode, vNodesCopy)
984 if (pnode->hSocket == INVALID_SOCKET)
986 if (FD_ISSET(pnode->hSocket, &fdsetRecv) || FD_ISSET(pnode->hSocket, &fdsetError))
988 TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
990 CDataStream& vRecv = pnode->vRecv;
991 unsigned int nPos = vRecv.size();
993 if (nPos > ReceiveBufferSize()) {
994 if (!pnode->fDisconnect)
995 printf("socket recv flood control disconnect (%d bytes)\n", vRecv.size());
996 pnode->CloseSocketDisconnect();
999 // typical socket buffer is 8K-64K
1000 char pchBuf[0x10000];
1001 int nBytes = recv(pnode->hSocket, pchBuf, sizeof(pchBuf), MSG_DONTWAIT);
1004 vRecv.resize(nPos + nBytes);
1005 memcpy(&vRecv[nPos], pchBuf, nBytes);
1006 pnode->nLastRecv = GetTime();
1008 else if (nBytes == 0)
1010 // socket closed gracefully
1011 if (!pnode->fDisconnect)
1012 printf("socket closed\n");
1013 pnode->CloseSocketDisconnect();
1015 else if (nBytes < 0)
1018 int nErr = WSAGetLastError();
1019 if (nErr != WSAEWOULDBLOCK && nErr != WSAEMSGSIZE && nErr != WSAEINTR && nErr != WSAEINPROGRESS)
1021 if (!pnode->fDisconnect)
1022 printf("socket recv error %d\n", nErr);
1023 pnode->CloseSocketDisconnect();
1033 if (pnode->hSocket == INVALID_SOCKET)
1035 if (FD_ISSET(pnode->hSocket, &fdsetSend))
1037 TRY_CRITICAL_BLOCK(pnode->cs_vSend)
1039 CDataStream& vSend = pnode->vSend;
1042 int nBytes = send(pnode->hSocket, &vSend[0], vSend.size(), MSG_NOSIGNAL | MSG_DONTWAIT);
1045 vSend.erase(vSend.begin(), vSend.begin() + nBytes);
1046 pnode->nLastSend = GetTime();
1048 else if (nBytes < 0)
1051 int nErr = WSAGetLastError();
1052 if (nErr != WSAEWOULDBLOCK && nErr != WSAEMSGSIZE && nErr != WSAEINTR && nErr != WSAEINPROGRESS)
1054 printf("socket send error %d\n", nErr);
1055 pnode->CloseSocketDisconnect();
1058 if (vSend.size() > SendBufferSize()) {
1059 if (!pnode->fDisconnect)
1060 printf("socket send flood control disconnect (%d bytes)\n", vSend.size());
1061 pnode->CloseSocketDisconnect();
1068 // Inactivity checking
1070 if (pnode->vSend.empty())
1071 pnode->nLastSendEmpty = GetTime();
1072 if (GetTime() - pnode->nTimeConnected > 60)
1074 if (pnode->nLastRecv == 0 || pnode->nLastSend == 0)
1076 printf("socket no message in first 60 seconds, %d %d\n", pnode->nLastRecv != 0, pnode->nLastSend != 0);
1077 pnode->fDisconnect = true;
1079 else if (GetTime() - pnode->nLastSend > 90*60 && GetTime() - pnode->nLastSendEmpty > 90*60)
1081 printf("socket not sending\n");
1082 pnode->fDisconnect = true;
1084 else if (GetTime() - pnode->nLastRecv > 90*60)
1086 printf("socket inactivity timeout\n");
1087 pnode->fDisconnect = true;
1091 CRITICAL_BLOCK(cs_vNodes)
1093 BOOST_FOREACH(CNode* pnode, vNodesCopy)
1110 void ThreadMapPort(void* parg)
1112 IMPLEMENT_RANDOMIZE_STACK(ThreadMapPort(parg));
1115 vnThreadsRunning[5]++;
1116 ThreadMapPort2(parg);
1117 vnThreadsRunning[5]--;
1119 catch (std::exception& e) {
1120 vnThreadsRunning[5]--;
1121 PrintException(&e, "ThreadMapPort()");
1123 vnThreadsRunning[5]--;
1124 PrintException(NULL, "ThreadMapPort()");
1126 printf("ThreadMapPort exiting\n");
1129 void ThreadMapPort2(void* parg)
1131 printf("ThreadMapPort started\n");
1134 sprintf(port, "%d", GetListenPort());
1136 const char * multicastif = 0;
1137 const char * minissdpdpath = 0;
1138 struct UPNPDev * devlist = 0;
1141 #ifndef UPNPDISCOVER_SUCCESS
1143 devlist = upnpDiscover(2000, multicastif, minissdpdpath, 0);
1147 devlist = upnpDiscover(2000, multicastif, minissdpdpath, 0, 0, &error);
1150 struct UPNPUrls urls;
1151 struct IGDdatas data;
1154 r = UPNP_GetValidIGD(devlist, &urls, &data, lanaddr, sizeof(lanaddr));
1157 string strDesc = "Bitcoin " + FormatFullVersion();
1158 #ifndef UPNPDISCOVER_SUCCESS
1160 r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
1161 port, port, lanaddr, strDesc.c_str(), "TCP", 0);
1164 r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
1165 port, port, lanaddr, strDesc.c_str(), "TCP", 0, "0");
1168 if(r!=UPNPCOMMAND_SUCCESS)
1169 printf("AddPortMapping(%s, %s, %s) failed with code %d (%s)\n",
1170 port, port, lanaddr, r, strupnperror(r));
1172 printf("UPnP Port Mapping successful.\n");
1175 if (fShutdown || !fUseUPnP)
1177 r = UPNP_DeletePortMapping(urls.controlURL, data.first.servicetype, port, "TCP", 0);
1178 printf("UPNP_DeletePortMapping() returned : %d\n", r);
1179 freeUPNPDevlist(devlist); devlist = 0;
1180 FreeUPNPUrls(&urls);
1183 if (i % 600 == 0) // Refresh every 20 minutes
1185 #ifndef UPNPDISCOVER_SUCCESS
1187 r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
1188 port, port, lanaddr, strDesc.c_str(), "TCP", 0);
1191 r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
1192 port, port, lanaddr, strDesc.c_str(), "TCP", 0, "0");
1195 if(r!=UPNPCOMMAND_SUCCESS)
1196 printf("AddPortMapping(%s, %s, %s) failed with code %d (%s)\n",
1197 port, port, lanaddr, r, strupnperror(r));
1199 printf("UPnP Port Mapping successful.\n");;
1205 printf("No valid UPnP IGDs found\n");
1206 freeUPNPDevlist(devlist); devlist = 0;
1208 FreeUPNPUrls(&urls);
1210 if (fShutdown || !fUseUPnP)
1217 void MapPort(bool fMapPort)
1219 if (fUseUPnP != fMapPort)
1221 fUseUPnP = fMapPort;
1222 WriteSetting("fUseUPnP", fUseUPnP);
1224 if (fUseUPnP && vnThreadsRunning[5] < 1)
1226 if (!CreateThread(ThreadMapPort, NULL))
1227 printf("Error: ThreadMapPort(ThreadMapPort) failed\n");
1231 void MapPort(bool /* unused fMapPort */)
1233 // Intentionally left blank.
1246 static const char *strDNSSeed[] = {
1248 "dnsseed.bluematt.me",
1249 "seed.bitcoin.sipa.be",
1250 "dnsseed.bitcoin.dashjr.org",
1253 void ThreadDNSAddressSeed(void* parg)
1255 IMPLEMENT_RANDOMIZE_STACK(ThreadDNSAddressSeed(parg));
1258 vnThreadsRunning[6]++;
1259 ThreadDNSAddressSeed2(parg);
1260 vnThreadsRunning[6]--;
1262 catch (std::exception& e) {
1263 vnThreadsRunning[6]--;
1264 PrintException(&e, "ThreadDNSAddressSeed()");
1266 vnThreadsRunning[6]--;
1267 throw; // support pthread_cancel()
1269 printf("ThreadDNSAddressSeed exiting\n");
1272 void ThreadDNSAddressSeed2(void* parg)
1274 printf("ThreadDNSAddressSeed started\n");
1279 printf("Loading addresses from DNS seeds (could take a while)\n");
1281 for (int seed_idx = 0; seed_idx < ARRAYLEN(strDNSSeed); seed_idx++) {
1282 vector<CAddress> vaddr;
1283 if (Lookup(strDNSSeed[seed_idx], vaddr, NODE_NETWORK, -1, true))
1287 BOOST_FOREACH (CAddress& addr, vaddr)
1289 if (addr.GetByte(3) != 127)
1292 AddAddress(addr, 0, &addrDB);
1296 addrDB.TxnCommit(); // Save addresses (it's ok if this fails)
1301 printf("%d addresses found from DNS seeds\n", found);
1315 unsigned int pnSeed[] =
1317 0x959bd347, 0xf8de42b2, 0x73bc0518, 0xea6edc50, 0x21b00a4d, 0xc725b43d, 0xd665464d, 0x1a2a770e,
1318 0x27c93946, 0x65b2fa46, 0xb80ae255, 0x66b3b446, 0xb1877a3e, 0x6ee89e3e, 0xc3175b40, 0x2a01a83c,
1319 0x95b1363a, 0xa079ad3d, 0xe6ca801f, 0x027f4f4a, 0x34f7f03a, 0xf790f04a, 0x16ca801f, 0x2f4d5e40,
1320 0x3a4d5e40, 0xc43a322e, 0xc8159753, 0x14d4724c, 0x7919a118, 0xe0bdb34e, 0x68a16b2e, 0xff64b44d,
1321 0x6099115b, 0x9b57b05b, 0x7bd1b4ad, 0xdf95944f, 0x29d2b73d, 0xafa8db79, 0xe247ba41, 0x24078348,
1322 0xf722f03c, 0x33567ebc, 0xace64ed4, 0x984d3932, 0xb5f34e55, 0x27b7024d, 0x94579247, 0x8894042e,
1323 0x9357d34c, 0x1063c24b, 0xcaa228b1, 0xa3c5a8b2, 0x5dc64857, 0xa2c23643, 0xa8369a54, 0x31203077,
1324 0x00707c5c, 0x09fc0b3a, 0x272e9e2e, 0xf80f043e, 0x9449ca3e, 0x5512c33e, 0xd106b555, 0xe8024157,
1325 0xe288ec29, 0xc79c5461, 0xafb63932, 0xdb02ab4b, 0x0e512777, 0x8a145a4c, 0xb201ff4f, 0x5e09314b,
1326 0xcd9bfbcd, 0x1c023765, 0x4394e75c, 0xa728bd4d, 0x65331552, 0xa98420b1, 0x89ecf559, 0x6e80801f,
1327 0xf404f118, 0xefd62b51, 0x05918346, 0x9b186d5f, 0xacabab46, 0xf912e255, 0xc188ea62, 0xcc55734e,
1328 0xc668064d, 0xd77a4558, 0x46201c55, 0xf17dfc80, 0xf7142f2e, 0x87bfb718, 0x8aa54fb2, 0xc451d518,
1329 0xc4ae8831, 0x8dd44d55, 0x5bbd206c, 0x64536b5d, 0x5c667e60, 0x3b064242, 0xfe963a42, 0xa28e6dc8,
1330 0xe8a9604a, 0xc989464e, 0xd124a659, 0x50065140, 0xa44dfe5e, 0x1079e655, 0x3fb986d5, 0x47895b18,
1331 0x7d3ce4ad, 0x4561ba50, 0x296eec62, 0x255b41ad, 0xaed35ec9, 0x55556f12, 0xc7d3154d, 0x3297b65d,
1332 0x8930121f, 0xabf42e4e, 0x4a29e044, 0x1212685d, 0x676c1e40, 0xce009744, 0x383a8948, 0xa2dbd0ad,
1333 0xecc2564d, 0x07dbc252, 0x887ee24b, 0x5171644c, 0x6bb798c1, 0x847f495d, 0x4cbb7145, 0x3bb81c32,
1334 0x45eb262e, 0xc8015a4e, 0x250a361b, 0xf694f946, 0xd64a183e, 0xd4f1dd59, 0x8f20ffd4, 0x51d9e55c,
1335 0x09521763, 0x5e02002e, 0x32c8074d, 0xe685762e, 0x8290b0bc, 0x762a922e, 0xfc5ee754, 0x83a24829,
1336 0x775b224d, 0x6295bb4d, 0x38ec0555, 0xbffbba50, 0xe5560260, 0x86b16a7c, 0xd372234e, 0x49a3c24b,
1337 0x2f6a171f, 0x4d75ed60, 0xae94115b, 0xcb543744, 0x63080c59, 0x3f9c724c, 0xc977ce18, 0x532efb18,
1338 0x69dc3b2e, 0x5f94d929, 0x1732bb4d, 0x9c814b4d, 0xe6b3762e, 0xc024f662, 0x8face35b, 0x6b5b044d,
1339 0x798c7b57, 0x79a6b44c, 0x067d3057, 0xf9e94e5f, 0x91cbe15b, 0x71405eb2, 0x2662234e, 0xcbcc4a6d,
1340 0xbf69d54b, 0xa79b4e55, 0xec6d3e51, 0x7c0b3c02, 0x60f83653, 0x24c1e15c, 0x1110b62e, 0x10350f59,
1341 0xa56f1d55, 0x3509e7a9, 0xeb128354, 0x14268e2e, 0x934e28bc, 0x8e32692e, 0x8331a21f, 0x3e633932,
1342 0xc812b12e, 0xc684bf2e, 0x80112d2e, 0xe0ddc96c, 0xc630ca4a, 0x5c09b3b2, 0x0b580518, 0xc8e9d54b,
1343 0xd169aa43, 0x17d0d655, 0x1d029963, 0x7ff87559, 0xcb701f1f, 0x6fa3e85d, 0xe45e9a54, 0xf05d1802,
1344 0x44d03b2e, 0x837b692e, 0xccd4354e, 0x3d6da13c, 0x3423084d, 0xf707c34a, 0x55f6db3a, 0xad26e442,
1345 0x6233a21f, 0x09e80e59, 0x8caeb54d, 0xbe870941, 0xb407d20e, 0x20b51018, 0x56fb152e, 0x460d2a4e,
1346 0xbb9a2946, 0x560eb12e, 0xed83dd29, 0xd6724f53, 0xa50aafb8, 0x451346d9, 0x88348e2e, 0x7312fead,
1347 0x8ecaf96f, 0x1bda4e5f, 0xf1671e40, 0x3c8c3e3b, 0x4716324d, 0xdde24ede, 0xf98cd17d, 0xa91d4644,
1348 0x28124eb2, 0x147d5129, 0xd022042e, 0x61733d3b, 0xad0d5e02, 0x8ce2932e, 0xe5c18502, 0x549c1e32,
1349 0x9685801f, 0x86e217ad, 0xd948214b, 0x4110f462, 0x3a2e894e, 0xbd35492e, 0x87e0d558, 0x64b8ef7d,
1350 0x7c3eb962, 0x72a84b3e, 0x7cd667c9, 0x28370a2e, 0x4bc60e7b, 0x6fc1ec60, 0x14a6983f, 0x86739a4b,
1351 0x46954e5f, 0x32e2e15c, 0x2e9326cf, 0xe5801c5e, 0x379607b2, 0x32151145, 0xf0e39744, 0xacb54c55,
1352 0xa37dfb60, 0x83b55cc9, 0x388f7ca5, 0x15034f5f, 0x3e94965b, 0x68e0ffad, 0x35280f59, 0x8fe190cf,
1353 0x7c6ba5b2, 0xa5e9db43, 0x4ee1fc60, 0xd9d94e5f, 0x04040677, 0x0ea9b35e, 0x5961f14f, 0x67fda063,
1354 0xa48a5a31, 0xc6524e55, 0x283d325e, 0x3f37515f, 0x96b94b3e, 0xacce620e, 0x6481cc5b, 0xa4a06d4b,
1355 0x9e95d2d9, 0xe40c03d5, 0xc2f4514b, 0xb79aad44, 0xf64be843, 0xb2064070, 0xfca00455, 0x429dfa4e,
1356 0x2323f173, 0xeda4185e, 0xabd5227d, 0x9efd4d58, 0xb1104758, 0x4811e955, 0xbd9ab355, 0xe921f44b,
1357 0x9f166dce, 0x09e279b2, 0xe0c9ac7b, 0x7901a5ad, 0xa145d4b0, 0x79104671, 0xec31e35a, 0x4fe0b555,
1358 0xc7d9cbad, 0xad057f55, 0xe94cc759, 0x7fe0b043, 0xe4529f2e, 0x0d4dd4b2, 0x9f11a54d, 0x031e2e4e,
1359 0xe6014f5f, 0x11d1ca6c, 0x26bd7f61, 0xeb86854f, 0x4d347b57, 0x116bbe2e, 0xdba7234e, 0x7bcbfd2e,
1360 0x174dd4b2, 0x6686762e, 0xb089ba50, 0xc6258246, 0x087e767b, 0xc4a8cb4a, 0x595dba50, 0x7f0ae502,
1361 0x7b1dbd5a, 0xa0603492, 0x57d1af4b, 0x9e21ffd4, 0x6393064d, 0x7407376e, 0xe484762e, 0x122a4e53,
1362 0x4a37aa43, 0x3888a6be, 0xee77864e, 0x039c8dd5, 0x688d89af, 0x0e988f62, 0x08218246, 0xfc2f8246,
1363 0xd1d97040, 0xd64cd4b2, 0x5ae4a6b8, 0x7d0de9bc, 0x8d304d61, 0x06c5c672, 0xa4c8bd4d, 0xe0fd373b,
1364 0x575ebe4d, 0x72d26277, 0x55570f55, 0x77b154d9, 0xe214293a, 0xfc740f4b, 0xfe3f6a57, 0xa9c55f02,
1365 0xae4054db, 0x2394d918, 0xb511b24a, 0xb8741ab2, 0x0758e65e, 0xc7b5795b, 0xb0a30a4c, 0xaf7f170c,
1366 0xf3b4762e, 0x8179576d, 0x738a1581, 0x4b95b64c, 0x9829b618, 0x1bea932e, 0x7bdeaa4b, 0xcb5e0281,
1367 0x65618f54, 0x0658474b, 0x27066acf, 0x40556d65, 0x7d204d53, 0xf28bc244, 0xdce23455, 0xadc0ff54,
1368 0x3863c948, 0xcee34e5f, 0xdeb85e02, 0x2ed17a61, 0x6a7b094d, 0x7f0cfc40, 0x59603f54, 0x3220afbc,
1369 0xb5dfd962, 0x125d21c0, 0x13f8d243, 0xacfefb4e, 0x86c2c147, 0x3d8bbd59, 0xbd02a21f, 0x2593042e,
1370 0xc6a17a7c, 0x28925861, 0xb487ed44, 0xb5f4fd6d, 0x90c28a45, 0x5a14f74d, 0x43d71b4c, 0x728ebb5d,
1371 0x885bf950, 0x08134dd0, 0x38ec046e, 0xc575684b, 0x50082d2e, 0xa2f47757, 0x270f86ae, 0xf3ff6462,
1372 0x10ed3f4e, 0x4b58d462, 0xe01ce23e, 0x8c5b092e, 0x63e52f4e, 0x22c1e85d, 0xa908f54e, 0x8591624f,
1373 0x2c0fb94e, 0xa280ba3c, 0xb6f41b4c, 0x24f9aa47, 0x27201647, 0x3a3ea6dc, 0xa14fc3be, 0x3c34bdd5,
1374 0x5b8d4f5b, 0xaadeaf4b, 0xc71cab50, 0x15697a4c, 0x9a1a734c, 0x2a037d81, 0x2590bd59, 0x48ec2741,
1375 0x53489c5b, 0x7f00314b, 0x2170d362, 0xf2e92542, 0x42c10b44, 0x98f0f118, 0x883a3456, 0x099a932e,
1376 0xea38f7bc, 0x644e9247, 0xbb61b62e, 0x30e0863d, 0x5f51be54, 0x207215c7, 0x5f306c45, 0xaa7f3932,
1377 0x98da7d45, 0x4e339b59, 0x2e411581, 0xa808f618, 0xad2c0c59, 0x54476741, 0x09e99fd1, 0x5db8f752,
1378 0xc16df8bd, 0x1dd4b44f, 0x106edf2e, 0x9e15c180, 0x2ad6b56f, 0x633a5332, 0xff33787c, 0x077cb545,
1379 0x6610be6d, 0x75aad2c4, 0x72fb4d5b, 0xe81e0f59, 0x576f6332, 0x47333373, 0x351ed783, 0x2d90fb50,
1380 0x8d5e0f6c, 0x5b27a552, 0xdb293ebb, 0xe55ef950, 0x4b133ad8, 0x75df975a, 0x7b6a8740, 0xa899464b,
1381 0xfab15161, 0x10f8b64d, 0xd055ea4d, 0xee8e146b, 0x4b14afb8, 0x4bc1c44a, 0x9b961dcc, 0xd111ff43,
1382 0xfca0b745, 0xc800e412, 0x0afad9d1, 0xf751c350, 0xf9f0cccf, 0xa290a545, 0x8ef13763, 0x7ec70d59,
1383 0x2b066acf, 0x65496c45, 0xade02c1b, 0xae6eb077, 0x92c1e65b, 0xc064e6a9, 0xc649e56d, 0x5287a243,
1384 0x36de4f5b, 0x5b1df6ad, 0x65c39a59, 0xdba805b2, 0x20067aa8, 0x6457e56d, 0x3cee26cf, 0xfd3ff26d,
1385 0x04f86d4a, 0x06b8e048, 0xa93bcd5c, 0x91135852, 0xbe90a643, 0x8fa0094d, 0x06d8215f, 0x2677094d,
1386 0xd735685c, 0x164a00c9, 0x5209ac5f, 0xa9564c5c, 0x3b504f5f, 0xcc826bd0, 0x4615042e, 0x5fe13b4a,
1387 0x8c81b86d, 0x879ab68c, 0x1de564b8, 0x434487d8, 0x2dcb1b63, 0x82ab524a, 0xb0676abb, 0xa13d9c62,
1388 0xdbb5b86d, 0x5b7f4b59, 0xaddfb44d, 0xad773532, 0x3997054c, 0x72cebd89, 0xb194544c, 0xc5b8046e,
1389 0x6e1adeb2, 0xaa5abb51, 0xefb54b44, 0x15efc54f, 0xe9f1bc4d, 0x5f401b6c, 0x97f018ad, 0xc82f9252,
1390 0x2cdc762e, 0x8e52e56d, 0x1827175e, 0x9b7d7d80, 0xb2ad6845, 0x51065140, 0x71180a18, 0x5b27006c,
1391 0x0621e255, 0x721cbe58, 0x670c0cb8, 0xf8bd715d, 0xe0bdc5d9, 0xed843501, 0x4b84554d, 0x7f1a18bc,
1392 0x53bcaf47, 0x5729d35f, 0xf0dda246, 0x22382bd0, 0x4d641fb0, 0x316afcde, 0x50a22f1f, 0x73608046,
1393 0xc461d84a, 0xb2dbe247,
1398 void ThreadOpenConnections(void* parg)
1400 IMPLEMENT_RANDOMIZE_STACK(ThreadOpenConnections(parg));
1403 vnThreadsRunning[1]++;
1404 ThreadOpenConnections2(parg);
1405 vnThreadsRunning[1]--;
1407 catch (std::exception& e) {
1408 vnThreadsRunning[1]--;
1409 PrintException(&e, "ThreadOpenConnections()");
1411 vnThreadsRunning[1]--;
1412 PrintException(NULL, "ThreadOpenConnections()");
1414 printf("ThreadOpenConnections exiting\n");
1417 void ThreadOpenConnections2(void* parg)
1419 printf("ThreadOpenConnections started\n");
1421 // Connect to specific addresses
1422 if (mapArgs.count("-connect"))
1424 for (int64 nLoop = 0;; nLoop++)
1426 BOOST_FOREACH(string strAddr, mapMultiArgs["-connect"])
1428 CAddress addr(strAddr, fAllowDNS);
1430 OpenNetworkConnection(addr);
1431 for (int i = 0; i < 10 && i < nLoop; i++)
1441 // Connect to manually added nodes first
1442 if (mapArgs.count("-addnode"))
1444 BOOST_FOREACH(string strAddr, mapMultiArgs["-addnode"])
1446 CAddress addr(strAddr, fAllowDNS);
1449 OpenNetworkConnection(addr);
1457 // Initiate network connections
1458 int64 nStart = GetTime();
1461 // Limit outbound connections
1462 vnThreadsRunning[1]--;
1467 CRITICAL_BLOCK(cs_vNodes)
1468 BOOST_FOREACH(CNode* pnode, vNodes)
1469 if (!pnode->fInbound)
1471 int nMaxOutboundConnections = MAX_OUTBOUND_CONNECTIONS;
1472 nMaxOutboundConnections = min(nMaxOutboundConnections, (int)GetArg("-maxconnections", 125));
1473 if (nOutbound < nMaxOutboundConnections)
1479 vnThreadsRunning[1]++;
1483 bool fAddSeeds = false;
1485 CRITICAL_BLOCK(cs_mapAddresses)
1487 // Add seed nodes if IRC isn't working
1488 bool fTOR = (fUseProxy && addrProxy.port == htons(9050));
1489 if (mapAddresses.empty() && (GetTime() - nStart > 60 || fUseProxy) && !fTestNet)
1495 for (int i = 0; i < ARRAYLEN(pnSeed); i++)
1497 // It'll only connect to one or two seed nodes because once it connects,
1498 // it'll get a pile of addresses with newer timestamps.
1499 // Seed nodes are given a random 'last seen time' of between one and two
1501 const int64 nOneWeek = 7*24*60*60;
1503 addr.ip = pnSeed[i];
1504 addr.nTime = GetTime()-GetRand(nOneWeek)-nOneWeek;
1510 // Choose an address to connect to based on most recently seen
1512 CAddress addrConnect;
1513 int64 nBest = INT64_MIN;
1515 // Only connect to one address per a.b.?.? range.
1516 // Do this here so we don't have to critsect vNodes inside mapAddresses critsect.
1517 set<unsigned int> setConnected;
1518 CRITICAL_BLOCK(cs_vNodes)
1519 BOOST_FOREACH(CNode* pnode, vNodes)
1520 setConnected.insert(pnode->addr.ip & 0x0000ffff);
1522 int64 nANow = GetAdjustedTime();
1524 CRITICAL_BLOCK(cs_mapAddresses)
1526 BOOST_FOREACH(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)
1528 const CAddress& addr = item.second;
1529 if (!addr.IsIPv4() || !addr.IsValid() || setConnected.count(addr.ip & 0x0000ffff))
1531 int64 nSinceLastSeen = nANow - addr.nTime;
1532 int64 nSinceLastTry = nANow - addr.nLastTry;
1534 // Randomize the order in a deterministic way, putting the standard port first
1535 int64 nRandomizer = (uint64)(nStart * 4951 + addr.nLastTry * 9567851 + addr.ip * 7789) % (2 * 60 * 60);
1536 if (addr.port != htons(GetDefaultPort()))
1537 nRandomizer += 2 * 60 * 60;
1539 // Last seen Base retry frequency
1548 // 365 days 93 hours
1549 int64 nDelay = (int64)(3600.0 * sqrt(fabs((double)nSinceLastSeen) / 3600.0) + nRandomizer);
1551 // Fast reconnect for one hour after last seen
1552 if (nSinceLastSeen < 60 * 60)
1555 // Limit retry frequency
1556 if (nSinceLastTry < nDelay)
1559 // If we have IRC, we'll be notified when they first come online,
1560 // and again every 24 hours by the refresh broadcast.
1561 if (nGotIRCAddresses > 0 && vNodes.size() >= 2 && nSinceLastSeen > 24 * 60 * 60)
1564 // Only try the old stuff if we don't have enough connections
1565 if (vNodes.size() >= 8 && nSinceLastSeen > 24 * 60 * 60)
1568 // If multiple addresses are ready, prioritize by time since
1569 // last seen and time since last tried.
1570 int64 nScore = min(nSinceLastTry, (int64)24 * 60 * 60) - nSinceLastSeen - nRandomizer;
1579 if (addrConnect.IsValid())
1580 OpenNetworkConnection(addrConnect);
1584 bool OpenNetworkConnection(const CAddress& addrConnect)
1587 // Initiate outbound network connection
1591 if (addrConnect.ip == addrLocalHost.ip || !addrConnect.IsIPv4() ||
1592 FindNode(addrConnect.ip) || CNode::IsBanned(addrConnect.ip))
1595 vnThreadsRunning[1]--;
1596 CNode* pnode = ConnectNode(addrConnect);
1597 vnThreadsRunning[1]++;
1602 pnode->fNetworkNode = true;
1614 void ThreadMessageHandler(void* parg)
1616 IMPLEMENT_RANDOMIZE_STACK(ThreadMessageHandler(parg));
1619 vnThreadsRunning[2]++;
1620 ThreadMessageHandler2(parg);
1621 vnThreadsRunning[2]--;
1623 catch (std::exception& e) {
1624 vnThreadsRunning[2]--;
1625 PrintException(&e, "ThreadMessageHandler()");
1627 vnThreadsRunning[2]--;
1628 PrintException(NULL, "ThreadMessageHandler()");
1630 printf("ThreadMessageHandler exiting\n");
1633 void ThreadMessageHandler2(void* parg)
1635 printf("ThreadMessageHandler started\n");
1636 SetThreadPriority(THREAD_PRIORITY_BELOW_NORMAL);
1639 vector<CNode*> vNodesCopy;
1640 CRITICAL_BLOCK(cs_vNodes)
1642 vNodesCopy = vNodes;
1643 BOOST_FOREACH(CNode* pnode, vNodesCopy)
1647 // Poll the connected nodes for messages
1648 CNode* pnodeTrickle = NULL;
1649 if (!vNodesCopy.empty())
1650 pnodeTrickle = vNodesCopy[GetRand(vNodesCopy.size())];
1651 BOOST_FOREACH(CNode* pnode, vNodesCopy)
1654 TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
1655 ProcessMessages(pnode);
1660 TRY_CRITICAL_BLOCK(pnode->cs_vSend)
1661 SendMessages(pnode, pnode == pnodeTrickle);
1666 CRITICAL_BLOCK(cs_vNodes)
1668 BOOST_FOREACH(CNode* pnode, vNodesCopy)
1672 // Wait and allow messages to bunch up.
1673 // Reduce vnThreadsRunning so StopNode has permission to exit while
1674 // we're sleeping, but we must always check fShutdown after doing this.
1675 vnThreadsRunning[2]--;
1677 if (fRequestShutdown)
1679 vnThreadsRunning[2]++;
1690 bool BindListenPort(string& strError)
1694 addrLocalHost.port = htons(GetListenPort());
1697 // Initialize Windows Sockets
1699 int ret = WSAStartup(MAKEWORD(2,2), &wsadata);
1700 if (ret != NO_ERROR)
1702 strError = strprintf("Error: TCP/IP socket library failed to start (WSAStartup returned error %d)", ret);
1703 printf("%s\n", strError.c_str());
1708 // Create socket for listening for incoming connections
1709 hListenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
1710 if (hListenSocket == INVALID_SOCKET)
1712 strError = strprintf("Error: Couldn't open socket for incoming connections (socket returned error %d)", WSAGetLastError());
1713 printf("%s\n", strError.c_str());
1718 // Different way of disabling SIGPIPE on BSD
1719 setsockopt(hListenSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&nOne, sizeof(int));
1723 // Allow binding if the port is still in TIME_WAIT state after
1724 // the program was closed and restarted. Not an issue on windows.
1725 setsockopt(hListenSocket, SOL_SOCKET, SO_REUSEADDR, (void*)&nOne, sizeof(int));
1729 // Set to nonblocking, incoming connections will also inherit this
1730 if (ioctlsocket(hListenSocket, FIONBIO, (u_long*)&nOne) == SOCKET_ERROR)
1732 if (fcntl(hListenSocket, F_SETFL, O_NONBLOCK) == SOCKET_ERROR)
1735 strError = strprintf("Error: Couldn't set properties on socket for incoming connections (error %d)", WSAGetLastError());
1736 printf("%s\n", strError.c_str());
1740 // The sockaddr_in structure specifies the address family,
1741 // IP address, and port for the socket that is being bound
1742 struct sockaddr_in sockaddr;
1743 memset(&sockaddr, 0, sizeof(sockaddr));
1744 sockaddr.sin_family = AF_INET;
1745 sockaddr.sin_addr.s_addr = INADDR_ANY; // bind to all IPs on this computer
1746 sockaddr.sin_port = htons(GetListenPort());
1747 if (::bind(hListenSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR)
1749 int nErr = WSAGetLastError();
1750 if (nErr == WSAEADDRINUSE)
1751 strError = strprintf(_("Unable to bind to port %d on this computer. Bitcoin is probably already running."), ntohs(sockaddr.sin_port));
1753 strError = strprintf("Error: Unable to bind to port %d on this computer (bind returned error %d)", ntohs(sockaddr.sin_port), nErr);
1754 printf("%s\n", strError.c_str());
1757 printf("Bound to port %d\n", ntohs(sockaddr.sin_port));
1759 // Listen for incoming connections
1760 if (listen(hListenSocket, SOMAXCONN) == SOCKET_ERROR)
1762 strError = strprintf("Error: Listening for incoming connections failed (listen returned error %d)", WSAGetLastError());
1763 printf("%s\n", strError.c_str());
1770 void StartNode(void* parg)
1772 if (pnodeLocalHost == NULL)
1773 pnodeLocalHost = new CNode(INVALID_SOCKET, CAddress("127.0.0.1", 0, false, nLocalServices));
1776 // Get local host ip
1777 char pszHostName[1000] = "";
1778 if (gethostname(pszHostName, sizeof(pszHostName)) != SOCKET_ERROR)
1780 vector<CAddress> vaddr;
1781 if (Lookup(pszHostName, vaddr, nLocalServices, -1, true))
1782 BOOST_FOREACH (const CAddress &addr, vaddr)
1783 if (addr.GetByte(3) != 127)
1785 addrLocalHost = addr;
1790 // Get local host ip
1791 struct ifaddrs* myaddrs;
1792 if (getifaddrs(&myaddrs) == 0)
1794 for (struct ifaddrs* ifa = myaddrs; ifa != NULL; ifa = ifa->ifa_next)
1796 if (ifa->ifa_addr == NULL) continue;
1797 if ((ifa->ifa_flags & IFF_UP) == 0) continue;
1798 if (strcmp(ifa->ifa_name, "lo") == 0) continue;
1799 if (strcmp(ifa->ifa_name, "lo0") == 0) continue;
1801 if (ifa->ifa_addr->sa_family == AF_INET)
1803 struct sockaddr_in* s4 = (struct sockaddr_in*)(ifa->ifa_addr);
1804 if (inet_ntop(ifa->ifa_addr->sa_family, (void*)&(s4->sin_addr), pszIP, sizeof(pszIP)) != NULL)
1805 printf("ipv4 %s: %s\n", ifa->ifa_name, pszIP);
1807 // Take the first IP that isn't loopback 127.x.x.x
1808 CAddress addr(*(unsigned int*)&s4->sin_addr, GetListenPort(), nLocalServices);
1809 if (addr.IsValid() && addr.GetByte(3) != 127)
1811 addrLocalHost = addr;
1815 else if (ifa->ifa_addr->sa_family == AF_INET6)
1817 struct sockaddr_in6* s6 = (struct sockaddr_in6*)(ifa->ifa_addr);
1818 if (inet_ntop(ifa->ifa_addr->sa_family, (void*)&(s6->sin6_addr), pszIP, sizeof(pszIP)) != NULL)
1819 printf("ipv6 %s: %s\n", ifa->ifa_name, pszIP);
1822 freeifaddrs(myaddrs);
1825 printf("addrLocalHost = %s\n", addrLocalHost.ToString().c_str());
1827 if (fUseProxy || mapArgs.count("-connect") || fNoListen)
1829 // Proxies can't take incoming connections
1830 addrLocalHost.ip = CAddress("0.0.0.0").ip;
1831 printf("addrLocalHost = %s\n", addrLocalHost.ToString().c_str());
1835 CreateThread(ThreadGetMyExternalIP, NULL);
1842 if (GetBoolArg("-nodnsseed"))
1843 printf("DNS seeding disabled\n");
1845 if (!CreateThread(ThreadDNSAddressSeed, NULL))
1846 printf("Error: CreateThread(ThreadDNSAddressSeed) failed\n");
1848 // Map ports with UPnP
1852 // Get addresses from IRC and advertise ours
1853 if (!CreateThread(ThreadIRCSeed, NULL))
1854 printf("Error: CreateThread(ThreadIRCSeed) failed\n");
1856 // Send and receive from sockets, accept connections
1857 if (!CreateThread(ThreadSocketHandler, NULL))
1858 printf("Error: CreateThread(ThreadSocketHandler) failed\n");
1860 // Initiate outbound connections
1861 if (!CreateThread(ThreadOpenConnections, NULL))
1862 printf("Error: CreateThread(ThreadOpenConnections) failed\n");
1865 if (!CreateThread(ThreadMessageHandler, NULL))
1866 printf("Error: CreateThread(ThreadMessageHandler) failed\n");
1868 // Generate coins in the background
1869 GenerateBitcoins(fGenerateBitcoins, pwalletMain);
1874 printf("StopNode()\n");
1876 nTransactionsUpdated++;
1877 int64 nStart = GetTime();
1878 while (vnThreadsRunning[0] > 0 || vnThreadsRunning[2] > 0 || vnThreadsRunning[3] > 0 || vnThreadsRunning[4] > 0
1880 || vnThreadsRunning[5] > 0
1884 if (GetTime() - nStart > 20)
1888 if (vnThreadsRunning[0] > 0) printf("ThreadSocketHandler still running\n");
1889 if (vnThreadsRunning[1] > 0) printf("ThreadOpenConnections still running\n");
1890 if (vnThreadsRunning[2] > 0) printf("ThreadMessageHandler still running\n");
1891 if (vnThreadsRunning[3] > 0) printf("ThreadBitcoinMiner still running\n");
1892 if (vnThreadsRunning[4] > 0) printf("ThreadRPCServer still running\n");
1893 if (fHaveUPnP && vnThreadsRunning[5] > 0) printf("ThreadMapPort still running\n");
1894 if (vnThreadsRunning[6] > 0) printf("ThreadDNSAddressSeed still running\n");
1895 while (vnThreadsRunning[2] > 0 || vnThreadsRunning[4] > 0)
1911 BOOST_FOREACH(CNode* pnode, vNodes)
1912 if (pnode->hSocket != INVALID_SOCKET)
1913 closesocket(pnode->hSocket);
1914 if (hListenSocket != INVALID_SOCKET)
1915 if (closesocket(hListenSocket) == SOCKET_ERROR)
1916 printf("closesocket(hListenSocket) failed with error %d\n", WSAGetLastError());
1919 // Shutdown Windows Sockets
1924 instance_of_cnetcleanup;