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);
745 void ThreadSocketHandler(void* parg)
747 IMPLEMENT_RANDOMIZE_STACK(ThreadSocketHandler(parg));
750 vnThreadsRunning[0]++;
751 ThreadSocketHandler2(parg);
752 vnThreadsRunning[0]--;
754 catch (std::exception& e) {
755 vnThreadsRunning[0]--;
756 PrintException(&e, "ThreadSocketHandler()");
758 vnThreadsRunning[0]--;
759 throw; // support pthread_cancel()
761 printf("ThreadSocketHandler exiting\n");
764 void ThreadSocketHandler2(void* parg)
766 printf("ThreadSocketHandler started\n");
767 list<CNode*> vNodesDisconnected;
768 int nPrevNodeCount = 0;
775 CRITICAL_BLOCK(cs_vNodes)
777 // Disconnect unused nodes
778 vector<CNode*> vNodesCopy = vNodes;
779 BOOST_FOREACH(CNode* pnode, vNodesCopy)
781 if (pnode->fDisconnect ||
782 (pnode->GetRefCount() <= 0 && pnode->vRecv.empty() && pnode->vSend.empty()))
784 // remove from vNodes
785 vNodes.erase(remove(vNodes.begin(), vNodes.end(), pnode), vNodes.end());
787 // close socket and cleanup
788 pnode->CloseSocketDisconnect();
791 // hold in disconnected pool until all refs are released
792 pnode->nReleaseTime = max(pnode->nReleaseTime, GetTime() + 15 * 60);
793 if (pnode->fNetworkNode || pnode->fInbound)
795 vNodesDisconnected.push_back(pnode);
799 // Delete disconnected nodes
800 list<CNode*> vNodesDisconnectedCopy = vNodesDisconnected;
801 BOOST_FOREACH(CNode* pnode, vNodesDisconnectedCopy)
803 // wait until threads are done using it
804 if (pnode->GetRefCount() <= 0)
806 bool fDelete = false;
807 TRY_CRITICAL_BLOCK(pnode->cs_vSend)
808 TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
809 TRY_CRITICAL_BLOCK(pnode->cs_mapRequests)
810 TRY_CRITICAL_BLOCK(pnode->cs_inventory)
814 vNodesDisconnected.remove(pnode);
820 if (vNodes.size() != nPrevNodeCount)
822 nPrevNodeCount = vNodes.size();
828 // Find which sockets have data to receive
830 struct timeval timeout;
832 timeout.tv_usec = 50000; // frequency to poll pnode->vSend
839 FD_ZERO(&fdsetError);
840 SOCKET hSocketMax = 0;
842 if(hListenSocket != INVALID_SOCKET)
843 FD_SET(hListenSocket, &fdsetRecv);
844 hSocketMax = max(hSocketMax, hListenSocket);
845 CRITICAL_BLOCK(cs_vNodes)
847 BOOST_FOREACH(CNode* pnode, vNodes)
849 if (pnode->hSocket == INVALID_SOCKET)
851 FD_SET(pnode->hSocket, &fdsetRecv);
852 FD_SET(pnode->hSocket, &fdsetError);
853 hSocketMax = max(hSocketMax, pnode->hSocket);
854 TRY_CRITICAL_BLOCK(pnode->cs_vSend)
855 if (!pnode->vSend.empty())
856 FD_SET(pnode->hSocket, &fdsetSend);
860 vnThreadsRunning[0]--;
861 int nSelect = select(hSocketMax + 1, &fdsetRecv, &fdsetSend, &fdsetError, &timeout);
862 vnThreadsRunning[0]++;
865 if (nSelect == SOCKET_ERROR)
867 int nErr = WSAGetLastError();
870 printf("socket select error %d\n", nErr);
871 for (int i = 0; i <= hSocketMax; i++)
872 FD_SET(i, &fdsetRecv);
875 FD_ZERO(&fdsetError);
876 Sleep(timeout.tv_usec/1000);
881 // Accept new connections
883 if (hListenSocket != INVALID_SOCKET && FD_ISSET(hListenSocket, &fdsetRecv))
885 struct sockaddr_in sockaddr;
886 socklen_t len = sizeof(sockaddr);
887 SOCKET hSocket = accept(hListenSocket, (struct sockaddr*)&sockaddr, &len);
888 CAddress addr(sockaddr);
891 CRITICAL_BLOCK(cs_vNodes)
892 BOOST_FOREACH(CNode* pnode, vNodes)
895 if (hSocket == INVALID_SOCKET)
897 if (WSAGetLastError() != WSAEWOULDBLOCK)
898 printf("socket error accept failed: %d\n", WSAGetLastError());
900 else if (nInbound >= GetArg("-maxconnections", 125) - MAX_OUTBOUND_CONNECTIONS)
902 closesocket(hSocket);
906 printf("accepted connection %s\n", addr.ToString().c_str());
907 CNode* pnode = new CNode(hSocket, addr, true);
909 CRITICAL_BLOCK(cs_vNodes)
910 vNodes.push_back(pnode);
916 // Service each socket
918 vector<CNode*> vNodesCopy;
919 CRITICAL_BLOCK(cs_vNodes)
922 BOOST_FOREACH(CNode* pnode, vNodesCopy)
925 BOOST_FOREACH(CNode* pnode, vNodesCopy)
933 if (pnode->hSocket == INVALID_SOCKET)
935 if (FD_ISSET(pnode->hSocket, &fdsetRecv) || FD_ISSET(pnode->hSocket, &fdsetError))
937 TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
939 CDataStream& vRecv = pnode->vRecv;
940 unsigned int nPos = vRecv.size();
942 if (nPos > ReceiveBufferSize()) {
943 if (!pnode->fDisconnect)
944 printf("socket recv flood control disconnect (%d bytes)\n", vRecv.size());
945 pnode->CloseSocketDisconnect();
948 // typical socket buffer is 8K-64K
949 char pchBuf[0x10000];
950 int nBytes = recv(pnode->hSocket, pchBuf, sizeof(pchBuf), MSG_DONTWAIT);
953 vRecv.resize(nPos + nBytes);
954 memcpy(&vRecv[nPos], pchBuf, nBytes);
955 pnode->nLastRecv = GetTime();
957 else if (nBytes == 0)
959 // socket closed gracefully
960 if (!pnode->fDisconnect)
961 printf("socket closed\n");
962 pnode->CloseSocketDisconnect();
967 int nErr = WSAGetLastError();
968 if (nErr != WSAEWOULDBLOCK && nErr != WSAEMSGSIZE && nErr != WSAEINTR && nErr != WSAEINPROGRESS)
970 if (!pnode->fDisconnect)
971 printf("socket recv error %d\n", nErr);
972 pnode->CloseSocketDisconnect();
982 if (pnode->hSocket == INVALID_SOCKET)
984 if (FD_ISSET(pnode->hSocket, &fdsetSend))
986 TRY_CRITICAL_BLOCK(pnode->cs_vSend)
988 CDataStream& vSend = pnode->vSend;
991 int nBytes = send(pnode->hSocket, &vSend[0], vSend.size(), MSG_NOSIGNAL | MSG_DONTWAIT);
994 vSend.erase(vSend.begin(), vSend.begin() + nBytes);
995 pnode->nLastSend = GetTime();
1000 int nErr = WSAGetLastError();
1001 if (nErr != WSAEWOULDBLOCK && nErr != WSAEMSGSIZE && nErr != WSAEINTR && nErr != WSAEINPROGRESS)
1003 printf("socket send error %d\n", nErr);
1004 pnode->CloseSocketDisconnect();
1007 if (vSend.size() > SendBufferSize()) {
1008 if (!pnode->fDisconnect)
1009 printf("socket send flood control disconnect (%d bytes)\n", vSend.size());
1010 pnode->CloseSocketDisconnect();
1017 // Inactivity checking
1019 if (pnode->vSend.empty())
1020 pnode->nLastSendEmpty = GetTime();
1021 if (GetTime() - pnode->nTimeConnected > 60)
1023 if (pnode->nLastRecv == 0 || pnode->nLastSend == 0)
1025 printf("socket no message in first 60 seconds, %d %d\n", pnode->nLastRecv != 0, pnode->nLastSend != 0);
1026 pnode->fDisconnect = true;
1028 else if (GetTime() - pnode->nLastSend > 90*60 && GetTime() - pnode->nLastSendEmpty > 90*60)
1030 printf("socket not sending\n");
1031 pnode->fDisconnect = true;
1033 else if (GetTime() - pnode->nLastRecv > 90*60)
1035 printf("socket inactivity timeout\n");
1036 pnode->fDisconnect = true;
1040 CRITICAL_BLOCK(cs_vNodes)
1042 BOOST_FOREACH(CNode* pnode, vNodesCopy)
1059 void ThreadMapPort(void* parg)
1061 IMPLEMENT_RANDOMIZE_STACK(ThreadMapPort(parg));
1064 vnThreadsRunning[5]++;
1065 ThreadMapPort2(parg);
1066 vnThreadsRunning[5]--;
1068 catch (std::exception& e) {
1069 vnThreadsRunning[5]--;
1070 PrintException(&e, "ThreadMapPort()");
1072 vnThreadsRunning[5]--;
1073 PrintException(NULL, "ThreadMapPort()");
1075 printf("ThreadMapPort exiting\n");
1078 void ThreadMapPort2(void* parg)
1080 printf("ThreadMapPort started\n");
1083 sprintf(port, "%d", GetListenPort());
1085 const char * multicastif = 0;
1086 const char * minissdpdpath = 0;
1087 struct UPNPDev * devlist = 0;
1090 #ifndef UPNPDISCOVER_SUCCESS
1092 devlist = upnpDiscover(2000, multicastif, minissdpdpath, 0);
1096 devlist = upnpDiscover(2000, multicastif, minissdpdpath, 0, 0, &error);
1099 struct UPNPUrls urls;
1100 struct IGDdatas data;
1103 r = UPNP_GetValidIGD(devlist, &urls, &data, lanaddr, sizeof(lanaddr));
1106 string strDesc = "Bitcoin " + FormatFullVersion();
1107 #ifndef UPNPDISCOVER_SUCCESS
1109 r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
1110 port, port, lanaddr, strDesc.c_str(), "TCP", 0);
1113 r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
1114 port, port, lanaddr, strDesc.c_str(), "TCP", 0, "0");
1117 if(r!=UPNPCOMMAND_SUCCESS)
1118 printf("AddPortMapping(%s, %s, %s) failed with code %d (%s)\n",
1119 port, port, lanaddr, r, strupnperror(r));
1121 printf("UPnP Port Mapping successful.\n");
1123 if (fShutdown || !fUseUPnP)
1125 r = UPNP_DeletePortMapping(urls.controlURL, data.first.servicetype, port, "TCP", 0);
1126 printf("UPNP_DeletePortMapping() returned : %d\n", r);
1127 freeUPNPDevlist(devlist); devlist = 0;
1128 FreeUPNPUrls(&urls);
1134 printf("No valid UPnP IGDs found\n");
1135 freeUPNPDevlist(devlist); devlist = 0;
1137 FreeUPNPUrls(&urls);
1139 if (fShutdown || !fUseUPnP)
1146 void MapPort(bool fMapPort)
1148 if (fUseUPnP != fMapPort)
1150 fUseUPnP = fMapPort;
1151 WriteSetting("fUseUPnP", fUseUPnP);
1153 if (fUseUPnP && vnThreadsRunning[5] < 1)
1155 if (!CreateThread(ThreadMapPort, NULL))
1156 printf("Error: ThreadMapPort(ThreadMapPort) failed\n");
1160 void MapPort(bool /* unused fMapPort */)
1162 // Intentionally left blank.
1175 static const char *strDNSSeed[] = {
1177 "dnsseed.bluematt.me",
1178 "seed.bitcoin.sipa.be",
1179 "dnsseed.bitcoin.dashjr.org",
1182 void ThreadDNSAddressSeed(void* parg)
1184 IMPLEMENT_RANDOMIZE_STACK(ThreadDNSAddressSeed(parg));
1187 vnThreadsRunning[6]++;
1188 ThreadDNSAddressSeed2(parg);
1189 vnThreadsRunning[6]--;
1191 catch (std::exception& e) {
1192 vnThreadsRunning[6]--;
1193 PrintException(&e, "ThreadDNSAddressSeed()");
1195 vnThreadsRunning[6]--;
1196 throw; // support pthread_cancel()
1198 printf("ThreadDNSAddressSeed exiting\n");
1201 void ThreadDNSAddressSeed2(void* parg)
1203 printf("ThreadDNSAddressSeed started\n");
1208 printf("Loading addresses from DNS seeds (could take a while)\n");
1210 for (int seed_idx = 0; seed_idx < ARRAYLEN(strDNSSeed); seed_idx++) {
1211 vector<CAddress> vaddr;
1212 if (Lookup(strDNSSeed[seed_idx], vaddr, NODE_NETWORK, -1, true))
1216 BOOST_FOREACH (CAddress& addr, vaddr)
1218 if (addr.GetByte(3) != 127)
1221 AddAddress(addr, 0, &addrDB);
1225 addrDB.TxnCommit(); // Save addresses (it's ok if this fails)
1230 printf("%d addresses found from DNS seeds\n", found);
1244 unsigned int pnSeed[] =
1246 0x6884ac63, 0x3ffecead, 0x2919b953, 0x0942fe50, 0x7a1d922e, 0xcdd6734a, 0x953a5bb6, 0x2c46922e,
1247 0xe2a5f143, 0xaa39103a, 0xa06afa5c, 0x135ffd59, 0xe8e82863, 0xf61ef029, 0xf75f042e, 0x2b363532,
1248 0x29b2df42, 0x16b1f64e, 0xd46e281b, 0x5280bf58, 0x60372229, 0x1be58e4f, 0xa8496f45, 0x1fb1a057,
1249 0x756b3844, 0x3bb79445, 0x0b375518, 0xcccb0102, 0xb682bf2e, 0x46431c02, 0x3a81073a, 0xa3771f1f,
1250 0x213a121f, 0x85dc2c1b, 0x56b4323b, 0xb34e8945, 0x3c40b33d, 0xfa276418, 0x1f818d29, 0xebe1e344,
1251 0xf6160a18, 0xf4fa384a, 0x34b09558, 0xb882b543, 0xe3ce2253, 0x6abf56d8, 0xe91b1155, 0x688ee6ad,
1252 0x2efc6058, 0x4792cd47, 0x0c32f757, 0x4c813a46, 0x8c93644a, 0x37507444, 0x813ad218, 0xdac06d4a,
1253 0xe4c63e4b, 0x21a1ea3c, 0x8d88556f, 0x30e9173a, 0x041f681b, 0xdc77ba50, 0xc0072753, 0xceddd44f,
1254 0x052d1743, 0xe3c77a4a, 0x13981c3a, 0x5685d918, 0x3c0e4e70, 0x3e56fb54, 0xb676ae0c, 0xac93c859,
1255 0x22279f43, 0x975a4542, 0xe527f071, 0xea162f2e, 0x3c65a32e, 0x5be5713b, 0x961ec418, 0xb202922e,
1256 0x5ef7be50, 0xce49f53e, 0x05803b47, 0x8463b055, 0x78576153, 0x3ec2ae3a, 0x4bbd7118, 0xafcee043,
1257 0x56a3e8ba, 0x6174de4d, 0x8d01ba4b, 0xc9af564e, 0xdbc9c547, 0xa627474d, 0xdada9244, 0xd3b3083a,
1258 0x523e071f, 0xd6b96f18, 0xbd527c46, 0xdf2bbb4d, 0xd37b4a4b, 0x3a6a2158, 0xc064b055, 0x18a8e055,
1259 0xec4dae3b, 0x0540416c, 0x475b4fbe, 0x064803b2, 0x48e9f062, 0x2898524b, 0xd315ff43, 0xf786d247,
1260 0xc7ea2f3e, 0xc087f043, 0xc163354b, 0x8250284d, 0xed300029, 0xbf36e05c, 0x8eb3ae4c, 0xe7aa623e,
1261 0x7ced0274, 0xdd362c1b, 0x362b995a, 0xca26b629, 0x3fc41618, 0xb97b364e, 0xa05b8729, 0x0f5e3c43,
1262 0xdf942618, 0x6aeb9b5b, 0xbf04762e, 0xfaaeb118, 0x87579958, 0x76520044, 0xc2660c5b, 0x628b201b,
1263 0xf193932e, 0x1c0ad045, 0xff908346, 0x8da9d4da, 0xed201c1f, 0xa47a2b1b, 0x330007d4, 0x8ba1ed47,
1264 0xb2f02d44, 0x7db62c1b, 0x781c454b, 0xc0300029, 0xb7062a45, 0x88b52e3a, 0x78dd6b63, 0x1cb9b718,
1265 0x5d358e47, 0x59912c3b, 0x79607544, 0x5197f759, 0xc023be48, 0xd1013743, 0x0f354057, 0x8e3aac3b,
1266 0x4114693e, 0x22316318, 0xe27dda50, 0x878eac3b, 0x4948a21f, 0x5db7f24c, 0x8ccb6157, 0x26a5de18,
1267 0x0a11bd43, 0x27bb1e41, 0x60a7a951, 0x3e16b35e, 0x07888b53, 0x5648a853, 0x0149fe50, 0xd070a34f,
1268 0x6454c96d, 0xd6e54758, 0xa96dc152, 0x65447861, 0xf6bdf95e, 0x10400202, 0x2c29d483, 0x18174732,
1269 0x1d840618, 0x12e61818, 0x089d3f3c, 0x917e931f, 0xd1b0c90e, 0x25bd3c42, 0xeb05775b, 0x7d550c59,
1270 0x6cfacb01, 0xe4224444, 0xa41dd943, 0x0f5aa643, 0x5e33731b, 0x81036d50, 0x6f46a0d1, 0x7731be43,
1271 0x14840e18, 0xf1e8d059, 0x661d2b1f, 0x40a3201b, 0x9407b843, 0xedf0254d, 0x7bd1a5bc, 0x073dbe51,
1272 0xe864a97b, 0x2efd947b, 0xb9ca0e45, 0x4e2113ad, 0xcc305731, 0xd39ca63c, 0x733df918, 0xda172b1f,
1273 0xaa03b34d, 0x7230fd4d, 0xf1ce6e3a, 0x2e9fab43, 0xa4010750, 0xa928bd18, 0x6809be42, 0xb19de348,
1274 0xff956270, 0x0d795f51, 0xd2dec247, 0x6df5774b, 0xbac11f79, 0xdfb05c75, 0x887683d8, 0xa1e83632,
1275 0x2c0f7671, 0x28bcb65d, 0xac2a7545, 0x3eebfc60, 0x304ad7c4, 0xa215a462, 0xc86f0f58, 0xcfb92ebe,
1276 0x5e23ed82, 0xf506184b, 0xec0f19b7, 0x060c59ad, 0x86ee3174, 0x85380774, 0xa199a562, 0x02b507ae,
1277 0x33eb2163, 0xf2112b1f, 0xb702ba50, 0x131b9618, 0x90ccd04a, 0x08f3273b, 0xecb61718, 0x64b8b44d,
1278 0x182bf4dc, 0xc7b68286, 0x6e318d5f, 0xfdb03654, 0xb3272e54, 0xe014ad4b, 0x274e4a31, 0x7806375c,
1279 0xbc34a748, 0x1b5ad94a, 0x6b54d10e, 0x73e2ae6e, 0x5529d483, 0x8455a76d, 0x99c13f47, 0x1d811741,
1280 0xa9782a78, 0x0b00464d, 0x7266ea50, 0x532dab46, 0x33e1413e, 0x780d0c18, 0x0fb0854e, 0x03370155,
1281 0x2693042e, 0xfa3d824a, 0x2bb1681b, 0x37ea2a18, 0x7fb8414b, 0x32e0713b, 0xacf38d3f, 0xa282716f,
1282 0xb1a09d7b, 0xa04b764b, 0x83c94d18, 0x05ee4c6d, 0x0e795f51, 0x46984352, 0xf80fc247, 0x3fccb946,
1283 0xd7ae244b, 0x0a8e0a4c, 0x57b141bc, 0x3647bed1, 0x1431b052, 0x803a8bbb, 0xfc69056b, 0xf5991862,
1284 0x14963b2e, 0xd35d5dda, 0xc6c73574, 0xc8f1405b, 0x0ca4224d, 0xecd36071, 0xa9461754, 0xe7a0ed72,
1285 0x559e8346, 0x1c9beec1, 0xc786ea4a, 0x9561b44d, 0x9788074d, 0x1a69934f, 0x23c5614c, 0x07c79d4b,
1286 0xc7ee52db, 0xc72df351, 0xcb135e44, 0xa0988346, 0xc211fc4c, 0x87dec34b, 0x1381074d, 0x04a65cb7,
1287 0x4409083a, 0x4a407a4c, 0x92b8d37d, 0xacf50b4d, 0xa58aa5bc, 0x448f801f, 0x9c83762e, 0x6fd5734a,
1288 0xfe2d454b, 0x84144c55, 0x05190e4c, 0xb2151448, 0x63867a3e, 0x16099018, 0x9c010d3c, 0x962d8f3d,
1289 0xd51ee453, 0x9d86801f, 0x68e87b47, 0x6bf7bb73, 0x5fc7910e, 0x10d90118, 0x3db04442, 0x729d3e4b,
1290 0xc397d842, 0x57bb15ad, 0x72f31f4e, 0xc9380043, 0x2bb24e18, 0xd9b8ab50, 0xb786801f, 0xf4dc4847,
1291 0x85f4bb51, 0x4435995b, 0x5ba07e40, 0x2c57392e, 0x3628124b, 0x9839b64b, 0x6fe8b24d, 0xaddce847,
1292 0x75260e45, 0x0c572a43, 0xfea21902, 0xb9f9742e, 0x5a70d443, 0x8fc5910e, 0x868d4744, 0x56245e02,
1293 0xd7eb5f02, 0x35c12c1b, 0x4373034b, 0x8786554c, 0xa6facf18, 0x4b11a31f, 0x3570664e, 0x5a64bc42,
1294 0x0b03983f, 0x8f457e4c, 0x0fd874c3, 0xb6cf31b2, 0x2bbc2d4e, 0x146ca5b2, 0x9d00b150, 0x048a4153,
1295 0xca4dcd43, 0xc1607cca, 0x8234cf57, 0x9c7daead, 0x3dc07658, 0xea5c6e4c, 0xf1a0084e, 0x16d2ee53,
1296 0x1b849418, 0xfe913a47, 0x1e988f62, 0x208b644c, 0xc55ee980, 0xbdbce747, 0xf59a384e, 0x0f56091b,
1297 0x7417b745, 0x0c37344e, 0x2c62ab47, 0xf8533a4d, 0x8030084d, 0x76b93c4b, 0xda6ea0ad, 0x3c54f618,
1298 0x63b0de1f, 0x7370d858, 0x1a70bb4c, 0xdda63b2e, 0x60b2ba50, 0x1ba7d048, 0xbe1b2c1b, 0xabea5747,
1299 0x29ad2e4d, 0xe8cd7642, 0x66c80e18, 0x138bf34a, 0xc6145e44, 0x2586794c, 0x07bc5478, 0x0da0b14d,
1300 0x8f95354e, 0x9eb11c62, 0xa1545e46, 0x2e7a2602, 0x408c9c3d, 0x59065d55, 0xf51d1a4c, 0x3bbc6a4e,
1301 0xc71b2a2e, 0xcdaaa545, 0x17d659d0, 0x5202e7ad, 0xf1b68445, 0x93375961, 0xbd88a043, 0x066ad655,
1302 0x890f6318, 0x7b7dca47, 0x99bdd662, 0x3bb4fc53, 0x1231efdc, 0xc0a99444, 0x96bbea47, 0x61ed8748,
1303 0x27dfa73b, 0x8d4d1754, 0x3460042e, 0x551f0c4c, 0x8d0e0718, 0x162ddc53, 0x53231718, 0x1ecd65d0,
1304 0x944d28bc, 0x3b79d058, 0xaff97fbc, 0x4860006c, 0xc101c90e, 0xace41743, 0xa5975d4c, 0x5cc2703e,
1305 0xb55a4450, 0x02d18840, 0xee2765ae, 0xd6012fd5, 0x24c94d7d, 0x8c6eec47, 0x7520ba5d, 0x9e15e460,
1306 0x8510b04c, 0x75ec3847, 0x1dfa6661, 0xe172b3ad, 0x5744c90e, 0x52a0a152, 0x8d6fad18, 0x67b74b6d,
1307 0x93a089b2, 0x0f3ac5d5, 0xe5de1855, 0x43d25747, 0x4bad804a, 0x55b408d8, 0x60a36441, 0xf553e860,
1308 0xdb2fa2c8, 0x03152b32, 0xdd27a7d5, 0x3116a8b8, 0x0a1d708c, 0xeee2f13c, 0x6acf436f, 0xce6eb4ca,
1309 0x101cd3d9, 0x1c48a6b8, 0xe57d6f44, 0x93dcf562,
1314 void ThreadOpenConnections(void* parg)
1316 IMPLEMENT_RANDOMIZE_STACK(ThreadOpenConnections(parg));
1319 vnThreadsRunning[1]++;
1320 ThreadOpenConnections2(parg);
1321 vnThreadsRunning[1]--;
1323 catch (std::exception& e) {
1324 vnThreadsRunning[1]--;
1325 PrintException(&e, "ThreadOpenConnections()");
1327 vnThreadsRunning[1]--;
1328 PrintException(NULL, "ThreadOpenConnections()");
1330 printf("ThreadOpenConnections exiting\n");
1333 void ThreadOpenConnections2(void* parg)
1335 printf("ThreadOpenConnections started\n");
1337 // Connect to specific addresses
1338 if (mapArgs.count("-connect"))
1340 for (int64 nLoop = 0;; nLoop++)
1342 BOOST_FOREACH(string strAddr, mapMultiArgs["-connect"])
1344 CAddress addr(strAddr, fAllowDNS);
1346 OpenNetworkConnection(addr);
1347 for (int i = 0; i < 10 && i < nLoop; i++)
1357 // Connect to manually added nodes first
1358 if (mapArgs.count("-addnode"))
1360 BOOST_FOREACH(string strAddr, mapMultiArgs["-addnode"])
1362 CAddress addr(strAddr, fAllowDNS);
1365 OpenNetworkConnection(addr);
1373 // Initiate network connections
1374 int64 nStart = GetTime();
1377 // Limit outbound connections
1378 vnThreadsRunning[1]--;
1383 CRITICAL_BLOCK(cs_vNodes)
1384 BOOST_FOREACH(CNode* pnode, vNodes)
1385 if (!pnode->fInbound)
1387 int nMaxOutboundConnections = MAX_OUTBOUND_CONNECTIONS;
1388 nMaxOutboundConnections = min(nMaxOutboundConnections, (int)GetArg("-maxconnections", 125));
1389 if (nOutbound < nMaxOutboundConnections)
1395 vnThreadsRunning[1]++;
1399 bool fAddSeeds = false;
1401 CRITICAL_BLOCK(cs_mapAddresses)
1403 // Add seed nodes if IRC isn't working
1404 bool fTOR = (fUseProxy && addrProxy.port == htons(9050));
1405 if (mapAddresses.empty() && (GetTime() - nStart > 60 || fUseProxy) && !fTestNet)
1411 for (int i = 0; i < ARRAYLEN(pnSeed); i++)
1413 // It'll only connect to one or two seed nodes because once it connects,
1414 // it'll get a pile of addresses with newer timestamps.
1415 // Seed nodes are given a random 'last seen time' of between one and two
1417 const int64 nOneWeek = 7*24*60*60;
1419 addr.ip = pnSeed[i];
1420 addr.nTime = GetTime()-GetRand(nOneWeek)-nOneWeek;
1426 // Choose an address to connect to based on most recently seen
1428 CAddress addrConnect;
1429 int64 nBest = INT64_MIN;
1431 // Only connect to one address per a.b.?.? range.
1432 // Do this here so we don't have to critsect vNodes inside mapAddresses critsect.
1433 set<unsigned int> setConnected;
1434 CRITICAL_BLOCK(cs_vNodes)
1435 BOOST_FOREACH(CNode* pnode, vNodes)
1436 setConnected.insert(pnode->addr.ip & 0x0000ffff);
1438 CRITICAL_BLOCK(cs_mapAddresses)
1440 BOOST_FOREACH(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)
1442 const CAddress& addr = item.second;
1443 if (!addr.IsIPv4() || !addr.IsValid() || setConnected.count(addr.ip & 0x0000ffff))
1445 int64 nSinceLastSeen = GetAdjustedTime() - addr.nTime;
1446 int64 nSinceLastTry = GetAdjustedTime() - addr.nLastTry;
1448 // Randomize the order in a deterministic way, putting the standard port first
1449 int64 nRandomizer = (uint64)(nStart * 4951 + addr.nLastTry * 9567851 + addr.ip * 7789) % (2 * 60 * 60);
1450 if (addr.port != htons(GetDefaultPort()))
1451 nRandomizer += 2 * 60 * 60;
1453 // Last seen Base retry frequency
1462 // 365 days 93 hours
1463 int64 nDelay = (int64)(3600.0 * sqrt(fabs((double)nSinceLastSeen) / 3600.0) + nRandomizer);
1465 // Fast reconnect for one hour after last seen
1466 if (nSinceLastSeen < 60 * 60)
1469 // Limit retry frequency
1470 if (nSinceLastTry < nDelay)
1473 // If we have IRC, we'll be notified when they first come online,
1474 // and again every 24 hours by the refresh broadcast.
1475 if (nGotIRCAddresses > 0 && vNodes.size() >= 2 && nSinceLastSeen > 24 * 60 * 60)
1478 // Only try the old stuff if we don't have enough connections
1479 if (vNodes.size() >= 8 && nSinceLastSeen > 24 * 60 * 60)
1482 // If multiple addresses are ready, prioritize by time since
1483 // last seen and time since last tried.
1484 int64 nScore = min(nSinceLastTry, (int64)24 * 60 * 60) - nSinceLastSeen - nRandomizer;
1493 if (addrConnect.IsValid())
1494 OpenNetworkConnection(addrConnect);
1498 bool OpenNetworkConnection(const CAddress& addrConnect)
1501 // Initiate outbound network connection
1505 if (addrConnect.ip == addrLocalHost.ip || !addrConnect.IsIPv4() || FindNode(addrConnect.ip))
1508 vnThreadsRunning[1]--;
1509 CNode* pnode = ConnectNode(addrConnect);
1510 vnThreadsRunning[1]++;
1515 pnode->fNetworkNode = true;
1527 void ThreadMessageHandler(void* parg)
1529 IMPLEMENT_RANDOMIZE_STACK(ThreadMessageHandler(parg));
1532 vnThreadsRunning[2]++;
1533 ThreadMessageHandler2(parg);
1534 vnThreadsRunning[2]--;
1536 catch (std::exception& e) {
1537 vnThreadsRunning[2]--;
1538 PrintException(&e, "ThreadMessageHandler()");
1540 vnThreadsRunning[2]--;
1541 PrintException(NULL, "ThreadMessageHandler()");
1543 printf("ThreadMessageHandler exiting\n");
1546 void ThreadMessageHandler2(void* parg)
1548 printf("ThreadMessageHandler started\n");
1549 SetThreadPriority(THREAD_PRIORITY_BELOW_NORMAL);
1552 vector<CNode*> vNodesCopy;
1553 CRITICAL_BLOCK(cs_vNodes)
1555 vNodesCopy = vNodes;
1556 BOOST_FOREACH(CNode* pnode, vNodesCopy)
1560 // Poll the connected nodes for messages
1561 CNode* pnodeTrickle = NULL;
1562 if (!vNodesCopy.empty())
1563 pnodeTrickle = vNodesCopy[GetRand(vNodesCopy.size())];
1564 BOOST_FOREACH(CNode* pnode, vNodesCopy)
1567 TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
1568 ProcessMessages(pnode);
1573 TRY_CRITICAL_BLOCK(pnode->cs_vSend)
1574 SendMessages(pnode, pnode == pnodeTrickle);
1579 CRITICAL_BLOCK(cs_vNodes)
1581 BOOST_FOREACH(CNode* pnode, vNodesCopy)
1585 // Wait and allow messages to bunch up.
1586 // Reduce vnThreadsRunning so StopNode has permission to exit while
1587 // we're sleeping, but we must always check fShutdown after doing this.
1588 vnThreadsRunning[2]--;
1590 if (fRequestShutdown)
1592 vnThreadsRunning[2]++;
1603 bool BindListenPort(string& strError)
1607 addrLocalHost.port = htons(GetListenPort());
1610 // Initialize Windows Sockets
1612 int ret = WSAStartup(MAKEWORD(2,2), &wsadata);
1613 if (ret != NO_ERROR)
1615 strError = strprintf("Error: TCP/IP socket library failed to start (WSAStartup returned error %d)", ret);
1616 printf("%s\n", strError.c_str());
1621 // Create socket for listening for incoming connections
1622 hListenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
1623 if (hListenSocket == INVALID_SOCKET)
1625 strError = strprintf("Error: Couldn't open socket for incoming connections (socket returned error %d)", WSAGetLastError());
1626 printf("%s\n", strError.c_str());
1631 // Different way of disabling SIGPIPE on BSD
1632 setsockopt(hListenSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&nOne, sizeof(int));
1636 // Allow binding if the port is still in TIME_WAIT state after
1637 // the program was closed and restarted. Not an issue on windows.
1638 setsockopt(hListenSocket, SOL_SOCKET, SO_REUSEADDR, (void*)&nOne, sizeof(int));
1642 // Set to nonblocking, incoming connections will also inherit this
1643 if (ioctlsocket(hListenSocket, FIONBIO, (u_long*)&nOne) == SOCKET_ERROR)
1645 if (fcntl(hListenSocket, F_SETFL, O_NONBLOCK) == SOCKET_ERROR)
1648 strError = strprintf("Error: Couldn't set properties on socket for incoming connections (error %d)", WSAGetLastError());
1649 printf("%s\n", strError.c_str());
1653 // The sockaddr_in structure specifies the address family,
1654 // IP address, and port for the socket that is being bound
1655 struct sockaddr_in sockaddr;
1656 memset(&sockaddr, 0, sizeof(sockaddr));
1657 sockaddr.sin_family = AF_INET;
1658 sockaddr.sin_addr.s_addr = INADDR_ANY; // bind to all IPs on this computer
1659 sockaddr.sin_port = htons(GetListenPort());
1660 if (::bind(hListenSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR)
1662 int nErr = WSAGetLastError();
1663 if (nErr == WSAEADDRINUSE)
1664 strError = strprintf(_("Unable to bind to port %d on this computer. Bitcoin is probably already running."), ntohs(sockaddr.sin_port));
1666 strError = strprintf("Error: Unable to bind to port %d on this computer (bind returned error %d)", ntohs(sockaddr.sin_port), nErr);
1667 printf("%s\n", strError.c_str());
1670 printf("Bound to port %d\n", ntohs(sockaddr.sin_port));
1672 // Listen for incoming connections
1673 if (listen(hListenSocket, SOMAXCONN) == SOCKET_ERROR)
1675 strError = strprintf("Error: Listening for incoming connections failed (listen returned error %d)", WSAGetLastError());
1676 printf("%s\n", strError.c_str());
1683 void StartNode(void* parg)
1685 if (pnodeLocalHost == NULL)
1686 pnodeLocalHost = new CNode(INVALID_SOCKET, CAddress("127.0.0.1", 0, false, nLocalServices));
1689 // Get local host ip
1690 char pszHostName[1000] = "";
1691 if (gethostname(pszHostName, sizeof(pszHostName)) != SOCKET_ERROR)
1693 vector<CAddress> vaddr;
1694 if (Lookup(pszHostName, vaddr, nLocalServices, -1, true))
1695 BOOST_FOREACH (const CAddress &addr, vaddr)
1696 if (addr.GetByte(3) != 127)
1698 addrLocalHost = addr;
1703 // Get local host ip
1704 struct ifaddrs* myaddrs;
1705 if (getifaddrs(&myaddrs) == 0)
1707 for (struct ifaddrs* ifa = myaddrs; ifa != NULL; ifa = ifa->ifa_next)
1709 if (ifa->ifa_addr == NULL) continue;
1710 if ((ifa->ifa_flags & IFF_UP) == 0) continue;
1711 if (strcmp(ifa->ifa_name, "lo") == 0) continue;
1712 if (strcmp(ifa->ifa_name, "lo0") == 0) continue;
1714 if (ifa->ifa_addr->sa_family == AF_INET)
1716 struct sockaddr_in* s4 = (struct sockaddr_in*)(ifa->ifa_addr);
1717 if (inet_ntop(ifa->ifa_addr->sa_family, (void*)&(s4->sin_addr), pszIP, sizeof(pszIP)) != NULL)
1718 printf("ipv4 %s: %s\n", ifa->ifa_name, pszIP);
1720 // Take the first IP that isn't loopback 127.x.x.x
1721 CAddress addr(*(unsigned int*)&s4->sin_addr, GetListenPort(), nLocalServices);
1722 if (addr.IsValid() && addr.GetByte(3) != 127)
1724 addrLocalHost = addr;
1728 else if (ifa->ifa_addr->sa_family == AF_INET6)
1730 struct sockaddr_in6* s6 = (struct sockaddr_in6*)(ifa->ifa_addr);
1731 if (inet_ntop(ifa->ifa_addr->sa_family, (void*)&(s6->sin6_addr), pszIP, sizeof(pszIP)) != NULL)
1732 printf("ipv6 %s: %s\n", ifa->ifa_name, pszIP);
1735 freeifaddrs(myaddrs);
1738 printf("addrLocalHost = %s\n", addrLocalHost.ToString().c_str());
1740 if (fUseProxy || mapArgs.count("-connect") || fNoListen)
1742 // Proxies can't take incoming connections
1743 addrLocalHost.ip = CAddress("0.0.0.0").ip;
1744 printf("addrLocalHost = %s\n", addrLocalHost.ToString().c_str());
1748 CreateThread(ThreadGetMyExternalIP, NULL);
1755 if (GetBoolArg("-nodnsseed"))
1756 printf("DNS seeding disabled\n");
1758 if (!CreateThread(ThreadDNSAddressSeed, NULL))
1759 printf("Error: CreateThread(ThreadDNSAddressSeed) failed\n");
1761 // Map ports with UPnP
1765 // Get addresses from IRC and advertise ours
1766 if (!CreateThread(ThreadIRCSeed, NULL))
1767 printf("Error: CreateThread(ThreadIRCSeed) failed\n");
1769 // Send and receive from sockets, accept connections
1770 if (!CreateThread(ThreadSocketHandler, NULL))
1771 printf("Error: CreateThread(ThreadSocketHandler) failed\n");
1773 // Initiate outbound connections
1774 if (!CreateThread(ThreadOpenConnections, NULL))
1775 printf("Error: CreateThread(ThreadOpenConnections) failed\n");
1778 if (!CreateThread(ThreadMessageHandler, NULL))
1779 printf("Error: CreateThread(ThreadMessageHandler) failed\n");
1781 // Generate coins in the background
1782 GenerateBitcoins(fGenerateBitcoins, pwalletMain);
1787 printf("StopNode()\n");
1789 nTransactionsUpdated++;
1790 int64 nStart = GetTime();
1791 while (vnThreadsRunning[0] > 0 || vnThreadsRunning[2] > 0 || vnThreadsRunning[3] > 0 || vnThreadsRunning[4] > 0
1793 || vnThreadsRunning[5] > 0
1797 if (GetTime() - nStart > 20)
1801 if (vnThreadsRunning[0] > 0) printf("ThreadSocketHandler still running\n");
1802 if (vnThreadsRunning[1] > 0) printf("ThreadOpenConnections still running\n");
1803 if (vnThreadsRunning[2] > 0) printf("ThreadMessageHandler still running\n");
1804 if (vnThreadsRunning[3] > 0) printf("ThreadBitcoinMiner still running\n");
1805 if (vnThreadsRunning[4] > 0) printf("ThreadRPCServer still running\n");
1806 if (fHaveUPnP && vnThreadsRunning[5] > 0) printf("ThreadMapPort still running\n");
1807 if (vnThreadsRunning[6] > 0) printf("ThreadDNSAddressSeed still running\n");
1808 while (vnThreadsRunning[2] > 0 || vnThreadsRunning[4] > 0)
1824 BOOST_FOREACH(CNode* pnode, vNodes)
1825 if (pnode->hSocket != INVALID_SOCKET)
1826 closesocket(pnode->hSocket);
1827 if (hListenSocket != INVALID_SOCKET)
1828 if (closesocket(hListenSocket) == SOCKET_ERROR)
1829 printf("closesocket(hListenSocket) failed with error %d\n", WSAGetLastError());
1832 // Shutdown Windows Sockets
1837 instance_of_cnetcleanup;