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");
1124 if (fShutdown || !fUseUPnP)
1126 r = UPNP_DeletePortMapping(urls.controlURL, data.first.servicetype, port, "TCP", 0);
1127 printf("UPNP_DeletePortMapping() returned : %d\n", r);
1128 freeUPNPDevlist(devlist); devlist = 0;
1129 FreeUPNPUrls(&urls);
1132 if (i % 600 == 0) // Refresh every 20 minutes
1134 #ifndef UPNPDISCOVER_SUCCESS
1136 r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
1137 port, port, lanaddr, strDesc.c_str(), "TCP", 0);
1140 r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
1141 port, port, lanaddr, strDesc.c_str(), "TCP", 0, "0");
1144 if(r!=UPNPCOMMAND_SUCCESS)
1145 printf("AddPortMapping(%s, %s, %s) failed with code %d (%s)\n",
1146 port, port, lanaddr, r, strupnperror(r));
1148 printf("UPnP Port Mapping successful.\n");;
1154 printf("No valid UPnP IGDs found\n");
1155 freeUPNPDevlist(devlist); devlist = 0;
1157 FreeUPNPUrls(&urls);
1159 if (fShutdown || !fUseUPnP)
1166 void MapPort(bool fMapPort)
1168 if (fUseUPnP != fMapPort)
1170 fUseUPnP = fMapPort;
1171 WriteSetting("fUseUPnP", fUseUPnP);
1173 if (fUseUPnP && vnThreadsRunning[5] < 1)
1175 if (!CreateThread(ThreadMapPort, NULL))
1176 printf("Error: ThreadMapPort(ThreadMapPort) failed\n");
1180 void MapPort(bool /* unused fMapPort */)
1182 // Intentionally left blank.
1195 static const char *strDNSSeed[] = {
1197 "dnsseed.bluematt.me",
1198 "seed.bitcoin.sipa.be",
1199 "dnsseed.bitcoin.dashjr.org",
1202 void ThreadDNSAddressSeed(void* parg)
1204 IMPLEMENT_RANDOMIZE_STACK(ThreadDNSAddressSeed(parg));
1207 vnThreadsRunning[6]++;
1208 ThreadDNSAddressSeed2(parg);
1209 vnThreadsRunning[6]--;
1211 catch (std::exception& e) {
1212 vnThreadsRunning[6]--;
1213 PrintException(&e, "ThreadDNSAddressSeed()");
1215 vnThreadsRunning[6]--;
1216 throw; // support pthread_cancel()
1218 printf("ThreadDNSAddressSeed exiting\n");
1221 void ThreadDNSAddressSeed2(void* parg)
1223 printf("ThreadDNSAddressSeed started\n");
1228 printf("Loading addresses from DNS seeds (could take a while)\n");
1230 for (int seed_idx = 0; seed_idx < ARRAYLEN(strDNSSeed); seed_idx++) {
1231 vector<CAddress> vaddr;
1232 if (Lookup(strDNSSeed[seed_idx], vaddr, NODE_NETWORK, -1, true))
1236 BOOST_FOREACH (CAddress& addr, vaddr)
1238 if (addr.GetByte(3) != 127)
1241 AddAddress(addr, 0, &addrDB);
1245 addrDB.TxnCommit(); // Save addresses (it's ok if this fails)
1250 printf("%d addresses found from DNS seeds\n", found);
1264 unsigned int pnSeed[] =
1266 0x959bd347, 0xf8de42b2, 0x73bc0518, 0xea6edc50, 0x21b00a4d, 0xc725b43d, 0xd665464d, 0x1a2a770e,
1267 0x27c93946, 0x65b2fa46, 0xb80ae255, 0x66b3b446, 0xb1877a3e, 0x6ee89e3e, 0xc3175b40, 0x2a01a83c,
1268 0x95b1363a, 0xa079ad3d, 0xe6ca801f, 0x027f4f4a, 0x34f7f03a, 0xf790f04a, 0x16ca801f, 0x2f4d5e40,
1269 0x3a4d5e40, 0xc43a322e, 0xc8159753, 0x14d4724c, 0x7919a118, 0xe0bdb34e, 0x68a16b2e, 0xff64b44d,
1270 0x6099115b, 0x9b57b05b, 0x7bd1b4ad, 0xdf95944f, 0x29d2b73d, 0xafa8db79, 0xe247ba41, 0x24078348,
1271 0xf722f03c, 0x33567ebc, 0xace64ed4, 0x984d3932, 0xb5f34e55, 0x27b7024d, 0x94579247, 0x8894042e,
1272 0x9357d34c, 0x1063c24b, 0xcaa228b1, 0xa3c5a8b2, 0x5dc64857, 0xa2c23643, 0xa8369a54, 0x31203077,
1273 0x00707c5c, 0x09fc0b3a, 0x272e9e2e, 0xf80f043e, 0x9449ca3e, 0x5512c33e, 0xd106b555, 0xe8024157,
1274 0xe288ec29, 0xc79c5461, 0xafb63932, 0xdb02ab4b, 0x0e512777, 0x8a145a4c, 0xb201ff4f, 0x5e09314b,
1275 0xcd9bfbcd, 0x1c023765, 0x4394e75c, 0xa728bd4d, 0x65331552, 0xa98420b1, 0x89ecf559, 0x6e80801f,
1276 0xf404f118, 0xefd62b51, 0x05918346, 0x9b186d5f, 0xacabab46, 0xf912e255, 0xc188ea62, 0xcc55734e,
1277 0xc668064d, 0xd77a4558, 0x46201c55, 0xf17dfc80, 0xf7142f2e, 0x87bfb718, 0x8aa54fb2, 0xc451d518,
1278 0xc4ae8831, 0x8dd44d55, 0x5bbd206c, 0x64536b5d, 0x5c667e60, 0x3b064242, 0xfe963a42, 0xa28e6dc8,
1279 0xe8a9604a, 0xc989464e, 0xd124a659, 0x50065140, 0xa44dfe5e, 0x1079e655, 0x3fb986d5, 0x47895b18,
1280 0x7d3ce4ad, 0x4561ba50, 0x296eec62, 0x255b41ad, 0xaed35ec9, 0x55556f12, 0xc7d3154d, 0x3297b65d,
1281 0x8930121f, 0xabf42e4e, 0x4a29e044, 0x1212685d, 0x676c1e40, 0xce009744, 0x383a8948, 0xa2dbd0ad,
1282 0xecc2564d, 0x07dbc252, 0x887ee24b, 0x5171644c, 0x6bb798c1, 0x847f495d, 0x4cbb7145, 0x3bb81c32,
1283 0x45eb262e, 0xc8015a4e, 0x250a361b, 0xf694f946, 0xd64a183e, 0xd4f1dd59, 0x8f20ffd4, 0x51d9e55c,
1284 0x09521763, 0x5e02002e, 0x32c8074d, 0xe685762e, 0x8290b0bc, 0x762a922e, 0xfc5ee754, 0x83a24829,
1285 0x775b224d, 0x6295bb4d, 0x38ec0555, 0xbffbba50, 0xe5560260, 0x86b16a7c, 0xd372234e, 0x49a3c24b,
1286 0x2f6a171f, 0x4d75ed60, 0xae94115b, 0xcb543744, 0x63080c59, 0x3f9c724c, 0xc977ce18, 0x532efb18,
1287 0x69dc3b2e, 0x5f94d929, 0x1732bb4d, 0x9c814b4d, 0xe6b3762e, 0xc024f662, 0x8face35b, 0x6b5b044d,
1288 0x798c7b57, 0x79a6b44c, 0x067d3057, 0xf9e94e5f, 0x91cbe15b, 0x71405eb2, 0x2662234e, 0xcbcc4a6d,
1289 0xbf69d54b, 0xa79b4e55, 0xec6d3e51, 0x7c0b3c02, 0x60f83653, 0x24c1e15c, 0x1110b62e, 0x10350f59,
1290 0xa56f1d55, 0x3509e7a9, 0xeb128354, 0x14268e2e, 0x934e28bc, 0x8e32692e, 0x8331a21f, 0x3e633932,
1291 0xc812b12e, 0xc684bf2e, 0x80112d2e, 0xe0ddc96c, 0xc630ca4a, 0x5c09b3b2, 0x0b580518, 0xc8e9d54b,
1292 0xd169aa43, 0x17d0d655, 0x1d029963, 0x7ff87559, 0xcb701f1f, 0x6fa3e85d, 0xe45e9a54, 0xf05d1802,
1293 0x44d03b2e, 0x837b692e, 0xccd4354e, 0x3d6da13c, 0x3423084d, 0xf707c34a, 0x55f6db3a, 0xad26e442,
1294 0x6233a21f, 0x09e80e59, 0x8caeb54d, 0xbe870941, 0xb407d20e, 0x20b51018, 0x56fb152e, 0x460d2a4e,
1295 0xbb9a2946, 0x560eb12e, 0xed83dd29, 0xd6724f53, 0xa50aafb8, 0x451346d9, 0x88348e2e, 0x7312fead,
1296 0x8ecaf96f, 0x1bda4e5f, 0xf1671e40, 0x3c8c3e3b, 0x4716324d, 0xdde24ede, 0xf98cd17d, 0xa91d4644,
1297 0x28124eb2, 0x147d5129, 0xd022042e, 0x61733d3b, 0xad0d5e02, 0x8ce2932e, 0xe5c18502, 0x549c1e32,
1298 0x9685801f, 0x86e217ad, 0xd948214b, 0x4110f462, 0x3a2e894e, 0xbd35492e, 0x87e0d558, 0x64b8ef7d,
1299 0x7c3eb962, 0x72a84b3e, 0x7cd667c9, 0x28370a2e, 0x4bc60e7b, 0x6fc1ec60, 0x14a6983f, 0x86739a4b,
1300 0x46954e5f, 0x32e2e15c, 0x2e9326cf, 0xe5801c5e, 0x379607b2, 0x32151145, 0xf0e39744, 0xacb54c55,
1301 0xa37dfb60, 0x83b55cc9, 0x388f7ca5, 0x15034f5f, 0x3e94965b, 0x68e0ffad, 0x35280f59, 0x8fe190cf,
1302 0x7c6ba5b2, 0xa5e9db43, 0x4ee1fc60, 0xd9d94e5f, 0x04040677, 0x0ea9b35e, 0x5961f14f, 0x67fda063,
1303 0xa48a5a31, 0xc6524e55, 0x283d325e, 0x3f37515f, 0x96b94b3e, 0xacce620e, 0x6481cc5b, 0xa4a06d4b,
1304 0x9e95d2d9, 0xe40c03d5, 0xc2f4514b, 0xb79aad44, 0xf64be843, 0xb2064070, 0xfca00455, 0x429dfa4e,
1305 0x2323f173, 0xeda4185e, 0xabd5227d, 0x9efd4d58, 0xb1104758, 0x4811e955, 0xbd9ab355, 0xe921f44b,
1306 0x9f166dce, 0x09e279b2, 0xe0c9ac7b, 0x7901a5ad, 0xa145d4b0, 0x79104671, 0xec31e35a, 0x4fe0b555,
1307 0xc7d9cbad, 0xad057f55, 0xe94cc759, 0x7fe0b043, 0xe4529f2e, 0x0d4dd4b2, 0x9f11a54d, 0x031e2e4e,
1308 0xe6014f5f, 0x11d1ca6c, 0x26bd7f61, 0xeb86854f, 0x4d347b57, 0x116bbe2e, 0xdba7234e, 0x7bcbfd2e,
1309 0x174dd4b2, 0x6686762e, 0xb089ba50, 0xc6258246, 0x087e767b, 0xc4a8cb4a, 0x595dba50, 0x7f0ae502,
1310 0x7b1dbd5a, 0xa0603492, 0x57d1af4b, 0x9e21ffd4, 0x6393064d, 0x7407376e, 0xe484762e, 0x122a4e53,
1311 0x4a37aa43, 0x3888a6be, 0xee77864e, 0x039c8dd5, 0x688d89af, 0x0e988f62, 0x08218246, 0xfc2f8246,
1312 0xd1d97040, 0xd64cd4b2, 0x5ae4a6b8, 0x7d0de9bc, 0x8d304d61, 0x06c5c672, 0xa4c8bd4d, 0xe0fd373b,
1313 0x575ebe4d, 0x72d26277, 0x55570f55, 0x77b154d9, 0xe214293a, 0xfc740f4b, 0xfe3f6a57, 0xa9c55f02,
1314 0xae4054db, 0x2394d918, 0xb511b24a, 0xb8741ab2, 0x0758e65e, 0xc7b5795b, 0xb0a30a4c, 0xaf7f170c,
1315 0xf3b4762e, 0x8179576d, 0x738a1581, 0x4b95b64c, 0x9829b618, 0x1bea932e, 0x7bdeaa4b, 0xcb5e0281,
1316 0x65618f54, 0x0658474b, 0x27066acf, 0x40556d65, 0x7d204d53, 0xf28bc244, 0xdce23455, 0xadc0ff54,
1317 0x3863c948, 0xcee34e5f, 0xdeb85e02, 0x2ed17a61, 0x6a7b094d, 0x7f0cfc40, 0x59603f54, 0x3220afbc,
1318 0xb5dfd962, 0x125d21c0, 0x13f8d243, 0xacfefb4e, 0x86c2c147, 0x3d8bbd59, 0xbd02a21f, 0x2593042e,
1319 0xc6a17a7c, 0x28925861, 0xb487ed44, 0xb5f4fd6d, 0x90c28a45, 0x5a14f74d, 0x43d71b4c, 0x728ebb5d,
1320 0x885bf950, 0x08134dd0, 0x38ec046e, 0xc575684b, 0x50082d2e, 0xa2f47757, 0x270f86ae, 0xf3ff6462,
1321 0x10ed3f4e, 0x4b58d462, 0xe01ce23e, 0x8c5b092e, 0x63e52f4e, 0x22c1e85d, 0xa908f54e, 0x8591624f,
1322 0x2c0fb94e, 0xa280ba3c, 0xb6f41b4c, 0x24f9aa47, 0x27201647, 0x3a3ea6dc, 0xa14fc3be, 0x3c34bdd5,
1323 0x5b8d4f5b, 0xaadeaf4b, 0xc71cab50, 0x15697a4c, 0x9a1a734c, 0x2a037d81, 0x2590bd59, 0x48ec2741,
1324 0x53489c5b, 0x7f00314b, 0x2170d362, 0xf2e92542, 0x42c10b44, 0x98f0f118, 0x883a3456, 0x099a932e,
1325 0xea38f7bc, 0x644e9247, 0xbb61b62e, 0x30e0863d, 0x5f51be54, 0x207215c7, 0x5f306c45, 0xaa7f3932,
1326 0x98da7d45, 0x4e339b59, 0x2e411581, 0xa808f618, 0xad2c0c59, 0x54476741, 0x09e99fd1, 0x5db8f752,
1327 0xc16df8bd, 0x1dd4b44f, 0x106edf2e, 0x9e15c180, 0x2ad6b56f, 0x633a5332, 0xff33787c, 0x077cb545,
1328 0x6610be6d, 0x75aad2c4, 0x72fb4d5b, 0xe81e0f59, 0x576f6332, 0x47333373, 0x351ed783, 0x2d90fb50,
1329 0x8d5e0f6c, 0x5b27a552, 0xdb293ebb, 0xe55ef950, 0x4b133ad8, 0x75df975a, 0x7b6a8740, 0xa899464b,
1330 0xfab15161, 0x10f8b64d, 0xd055ea4d, 0xee8e146b, 0x4b14afb8, 0x4bc1c44a, 0x9b961dcc, 0xd111ff43,
1331 0xfca0b745, 0xc800e412, 0x0afad9d1, 0xf751c350, 0xf9f0cccf, 0xa290a545, 0x8ef13763, 0x7ec70d59,
1332 0x2b066acf, 0x65496c45, 0xade02c1b, 0xae6eb077, 0x92c1e65b, 0xc064e6a9, 0xc649e56d, 0x5287a243,
1333 0x36de4f5b, 0x5b1df6ad, 0x65c39a59, 0xdba805b2, 0x20067aa8, 0x6457e56d, 0x3cee26cf, 0xfd3ff26d,
1334 0x04f86d4a, 0x06b8e048, 0xa93bcd5c, 0x91135852, 0xbe90a643, 0x8fa0094d, 0x06d8215f, 0x2677094d,
1335 0xd735685c, 0x164a00c9, 0x5209ac5f, 0xa9564c5c, 0x3b504f5f, 0xcc826bd0, 0x4615042e, 0x5fe13b4a,
1336 0x8c81b86d, 0x879ab68c, 0x1de564b8, 0x434487d8, 0x2dcb1b63, 0x82ab524a, 0xb0676abb, 0xa13d9c62,
1337 0xdbb5b86d, 0x5b7f4b59, 0xaddfb44d, 0xad773532, 0x3997054c, 0x72cebd89, 0xb194544c, 0xc5b8046e,
1338 0x6e1adeb2, 0xaa5abb51, 0xefb54b44, 0x15efc54f, 0xe9f1bc4d, 0x5f401b6c, 0x97f018ad, 0xc82f9252,
1339 0x2cdc762e, 0x8e52e56d, 0x1827175e, 0x9b7d7d80, 0xb2ad6845, 0x51065140, 0x71180a18, 0x5b27006c,
1340 0x0621e255, 0x721cbe58, 0x670c0cb8, 0xf8bd715d, 0xe0bdc5d9, 0xed843501, 0x4b84554d, 0x7f1a18bc,
1341 0x53bcaf47, 0x5729d35f, 0xf0dda246, 0x22382bd0, 0x4d641fb0, 0x316afcde, 0x50a22f1f, 0x73608046,
1342 0xc461d84a, 0xb2dbe247,
1347 void ThreadOpenConnections(void* parg)
1349 IMPLEMENT_RANDOMIZE_STACK(ThreadOpenConnections(parg));
1352 vnThreadsRunning[1]++;
1353 ThreadOpenConnections2(parg);
1354 vnThreadsRunning[1]--;
1356 catch (std::exception& e) {
1357 vnThreadsRunning[1]--;
1358 PrintException(&e, "ThreadOpenConnections()");
1360 vnThreadsRunning[1]--;
1361 PrintException(NULL, "ThreadOpenConnections()");
1363 printf("ThreadOpenConnections exiting\n");
1366 void ThreadOpenConnections2(void* parg)
1368 printf("ThreadOpenConnections started\n");
1370 // Connect to specific addresses
1371 if (mapArgs.count("-connect"))
1373 for (int64 nLoop = 0;; nLoop++)
1375 BOOST_FOREACH(string strAddr, mapMultiArgs["-connect"])
1377 CAddress addr(strAddr, fAllowDNS);
1379 OpenNetworkConnection(addr);
1380 for (int i = 0; i < 10 && i < nLoop; i++)
1390 // Connect to manually added nodes first
1391 if (mapArgs.count("-addnode"))
1393 BOOST_FOREACH(string strAddr, mapMultiArgs["-addnode"])
1395 CAddress addr(strAddr, fAllowDNS);
1398 OpenNetworkConnection(addr);
1406 // Initiate network connections
1407 int64 nStart = GetTime();
1410 // Limit outbound connections
1411 vnThreadsRunning[1]--;
1416 CRITICAL_BLOCK(cs_vNodes)
1417 BOOST_FOREACH(CNode* pnode, vNodes)
1418 if (!pnode->fInbound)
1420 int nMaxOutboundConnections = MAX_OUTBOUND_CONNECTIONS;
1421 nMaxOutboundConnections = min(nMaxOutboundConnections, (int)GetArg("-maxconnections", 125));
1422 if (nOutbound < nMaxOutboundConnections)
1428 vnThreadsRunning[1]++;
1432 bool fAddSeeds = false;
1434 CRITICAL_BLOCK(cs_mapAddresses)
1436 // Add seed nodes if IRC isn't working
1437 bool fTOR = (fUseProxy && addrProxy.port == htons(9050));
1438 if (mapAddresses.empty() && (GetTime() - nStart > 60 || fUseProxy) && !fTestNet)
1444 for (int i = 0; i < ARRAYLEN(pnSeed); i++)
1446 // It'll only connect to one or two seed nodes because once it connects,
1447 // it'll get a pile of addresses with newer timestamps.
1448 // Seed nodes are given a random 'last seen time' of between one and two
1450 const int64 nOneWeek = 7*24*60*60;
1452 addr.ip = pnSeed[i];
1453 addr.nTime = GetTime()-GetRand(nOneWeek)-nOneWeek;
1459 // Choose an address to connect to based on most recently seen
1461 CAddress addrConnect;
1462 int64 nBest = INT64_MIN;
1464 // Only connect to one address per a.b.?.? range.
1465 // Do this here so we don't have to critsect vNodes inside mapAddresses critsect.
1466 set<unsigned int> setConnected;
1467 CRITICAL_BLOCK(cs_vNodes)
1468 BOOST_FOREACH(CNode* pnode, vNodes)
1469 setConnected.insert(pnode->addr.ip & 0x0000ffff);
1471 CRITICAL_BLOCK(cs_mapAddresses)
1473 BOOST_FOREACH(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)
1475 const CAddress& addr = item.second;
1476 if (!addr.IsIPv4() || !addr.IsValid() || setConnected.count(addr.ip & 0x0000ffff))
1478 int64 nSinceLastSeen = GetAdjustedTime() - addr.nTime;
1479 int64 nSinceLastTry = GetAdjustedTime() - addr.nLastTry;
1481 // Randomize the order in a deterministic way, putting the standard port first
1482 int64 nRandomizer = (uint64)(nStart * 4951 + addr.nLastTry * 9567851 + addr.ip * 7789) % (2 * 60 * 60);
1483 if (addr.port != htons(GetDefaultPort()))
1484 nRandomizer += 2 * 60 * 60;
1486 // Last seen Base retry frequency
1495 // 365 days 93 hours
1496 int64 nDelay = (int64)(3600.0 * sqrt(fabs((double)nSinceLastSeen) / 3600.0) + nRandomizer);
1498 // Fast reconnect for one hour after last seen
1499 if (nSinceLastSeen < 60 * 60)
1502 // Limit retry frequency
1503 if (nSinceLastTry < nDelay)
1506 // If we have IRC, we'll be notified when they first come online,
1507 // and again every 24 hours by the refresh broadcast.
1508 if (nGotIRCAddresses > 0 && vNodes.size() >= 2 && nSinceLastSeen > 24 * 60 * 60)
1511 // Only try the old stuff if we don't have enough connections
1512 if (vNodes.size() >= 8 && nSinceLastSeen > 24 * 60 * 60)
1515 // If multiple addresses are ready, prioritize by time since
1516 // last seen and time since last tried.
1517 int64 nScore = min(nSinceLastTry, (int64)24 * 60 * 60) - nSinceLastSeen - nRandomizer;
1526 if (addrConnect.IsValid())
1527 OpenNetworkConnection(addrConnect);
1531 bool OpenNetworkConnection(const CAddress& addrConnect)
1534 // Initiate outbound network connection
1538 if (addrConnect.ip == addrLocalHost.ip || !addrConnect.IsIPv4() || FindNode(addrConnect.ip))
1541 vnThreadsRunning[1]--;
1542 CNode* pnode = ConnectNode(addrConnect);
1543 vnThreadsRunning[1]++;
1548 pnode->fNetworkNode = true;
1560 void ThreadMessageHandler(void* parg)
1562 IMPLEMENT_RANDOMIZE_STACK(ThreadMessageHandler(parg));
1565 vnThreadsRunning[2]++;
1566 ThreadMessageHandler2(parg);
1567 vnThreadsRunning[2]--;
1569 catch (std::exception& e) {
1570 vnThreadsRunning[2]--;
1571 PrintException(&e, "ThreadMessageHandler()");
1573 vnThreadsRunning[2]--;
1574 PrintException(NULL, "ThreadMessageHandler()");
1576 printf("ThreadMessageHandler exiting\n");
1579 void ThreadMessageHandler2(void* parg)
1581 printf("ThreadMessageHandler started\n");
1582 SetThreadPriority(THREAD_PRIORITY_BELOW_NORMAL);
1585 vector<CNode*> vNodesCopy;
1586 CRITICAL_BLOCK(cs_vNodes)
1588 vNodesCopy = vNodes;
1589 BOOST_FOREACH(CNode* pnode, vNodesCopy)
1593 // Poll the connected nodes for messages
1594 CNode* pnodeTrickle = NULL;
1595 if (!vNodesCopy.empty())
1596 pnodeTrickle = vNodesCopy[GetRand(vNodesCopy.size())];
1597 BOOST_FOREACH(CNode* pnode, vNodesCopy)
1600 TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
1601 ProcessMessages(pnode);
1606 TRY_CRITICAL_BLOCK(pnode->cs_vSend)
1607 SendMessages(pnode, pnode == pnodeTrickle);
1612 CRITICAL_BLOCK(cs_vNodes)
1614 BOOST_FOREACH(CNode* pnode, vNodesCopy)
1618 // Wait and allow messages to bunch up.
1619 // Reduce vnThreadsRunning so StopNode has permission to exit while
1620 // we're sleeping, but we must always check fShutdown after doing this.
1621 vnThreadsRunning[2]--;
1623 if (fRequestShutdown)
1625 vnThreadsRunning[2]++;
1636 bool BindListenPort(string& strError)
1640 addrLocalHost.port = htons(GetListenPort());
1643 // Initialize Windows Sockets
1645 int ret = WSAStartup(MAKEWORD(2,2), &wsadata);
1646 if (ret != NO_ERROR)
1648 strError = strprintf("Error: TCP/IP socket library failed to start (WSAStartup returned error %d)", ret);
1649 printf("%s\n", strError.c_str());
1654 // Create socket for listening for incoming connections
1655 hListenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
1656 if (hListenSocket == INVALID_SOCKET)
1658 strError = strprintf("Error: Couldn't open socket for incoming connections (socket returned error %d)", WSAGetLastError());
1659 printf("%s\n", strError.c_str());
1664 // Different way of disabling SIGPIPE on BSD
1665 setsockopt(hListenSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&nOne, sizeof(int));
1669 // Allow binding if the port is still in TIME_WAIT state after
1670 // the program was closed and restarted. Not an issue on windows.
1671 setsockopt(hListenSocket, SOL_SOCKET, SO_REUSEADDR, (void*)&nOne, sizeof(int));
1675 // Set to nonblocking, incoming connections will also inherit this
1676 if (ioctlsocket(hListenSocket, FIONBIO, (u_long*)&nOne) == SOCKET_ERROR)
1678 if (fcntl(hListenSocket, F_SETFL, O_NONBLOCK) == SOCKET_ERROR)
1681 strError = strprintf("Error: Couldn't set properties on socket for incoming connections (error %d)", WSAGetLastError());
1682 printf("%s\n", strError.c_str());
1686 // The sockaddr_in structure specifies the address family,
1687 // IP address, and port for the socket that is being bound
1688 struct sockaddr_in sockaddr;
1689 memset(&sockaddr, 0, sizeof(sockaddr));
1690 sockaddr.sin_family = AF_INET;
1691 sockaddr.sin_addr.s_addr = INADDR_ANY; // bind to all IPs on this computer
1692 sockaddr.sin_port = htons(GetListenPort());
1693 if (::bind(hListenSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR)
1695 int nErr = WSAGetLastError();
1696 if (nErr == WSAEADDRINUSE)
1697 strError = strprintf(_("Unable to bind to port %d on this computer. Bitcoin is probably already running."), ntohs(sockaddr.sin_port));
1699 strError = strprintf("Error: Unable to bind to port %d on this computer (bind returned error %d)", ntohs(sockaddr.sin_port), nErr);
1700 printf("%s\n", strError.c_str());
1703 printf("Bound to port %d\n", ntohs(sockaddr.sin_port));
1705 // Listen for incoming connections
1706 if (listen(hListenSocket, SOMAXCONN) == SOCKET_ERROR)
1708 strError = strprintf("Error: Listening for incoming connections failed (listen returned error %d)", WSAGetLastError());
1709 printf("%s\n", strError.c_str());
1716 void StartNode(void* parg)
1718 if (pnodeLocalHost == NULL)
1719 pnodeLocalHost = new CNode(INVALID_SOCKET, CAddress("127.0.0.1", 0, false, nLocalServices));
1722 // Get local host ip
1723 char pszHostName[1000] = "";
1724 if (gethostname(pszHostName, sizeof(pszHostName)) != SOCKET_ERROR)
1726 vector<CAddress> vaddr;
1727 if (Lookup(pszHostName, vaddr, nLocalServices, -1, true))
1728 BOOST_FOREACH (const CAddress &addr, vaddr)
1729 if (addr.GetByte(3) != 127)
1731 addrLocalHost = addr;
1736 // Get local host ip
1737 struct ifaddrs* myaddrs;
1738 if (getifaddrs(&myaddrs) == 0)
1740 for (struct ifaddrs* ifa = myaddrs; ifa != NULL; ifa = ifa->ifa_next)
1742 if (ifa->ifa_addr == NULL) continue;
1743 if ((ifa->ifa_flags & IFF_UP) == 0) continue;
1744 if (strcmp(ifa->ifa_name, "lo") == 0) continue;
1745 if (strcmp(ifa->ifa_name, "lo0") == 0) continue;
1747 if (ifa->ifa_addr->sa_family == AF_INET)
1749 struct sockaddr_in* s4 = (struct sockaddr_in*)(ifa->ifa_addr);
1750 if (inet_ntop(ifa->ifa_addr->sa_family, (void*)&(s4->sin_addr), pszIP, sizeof(pszIP)) != NULL)
1751 printf("ipv4 %s: %s\n", ifa->ifa_name, pszIP);
1753 // Take the first IP that isn't loopback 127.x.x.x
1754 CAddress addr(*(unsigned int*)&s4->sin_addr, GetListenPort(), nLocalServices);
1755 if (addr.IsValid() && addr.GetByte(3) != 127)
1757 addrLocalHost = addr;
1761 else if (ifa->ifa_addr->sa_family == AF_INET6)
1763 struct sockaddr_in6* s6 = (struct sockaddr_in6*)(ifa->ifa_addr);
1764 if (inet_ntop(ifa->ifa_addr->sa_family, (void*)&(s6->sin6_addr), pszIP, sizeof(pszIP)) != NULL)
1765 printf("ipv6 %s: %s\n", ifa->ifa_name, pszIP);
1768 freeifaddrs(myaddrs);
1771 printf("addrLocalHost = %s\n", addrLocalHost.ToString().c_str());
1773 if (fUseProxy || mapArgs.count("-connect") || fNoListen)
1775 // Proxies can't take incoming connections
1776 addrLocalHost.ip = CAddress("0.0.0.0").ip;
1777 printf("addrLocalHost = %s\n", addrLocalHost.ToString().c_str());
1781 CreateThread(ThreadGetMyExternalIP, NULL);
1788 if (GetBoolArg("-nodnsseed"))
1789 printf("DNS seeding disabled\n");
1791 if (!CreateThread(ThreadDNSAddressSeed, NULL))
1792 printf("Error: CreateThread(ThreadDNSAddressSeed) failed\n");
1794 // Map ports with UPnP
1798 // Get addresses from IRC and advertise ours
1799 if (!CreateThread(ThreadIRCSeed, NULL))
1800 printf("Error: CreateThread(ThreadIRCSeed) failed\n");
1802 // Send and receive from sockets, accept connections
1803 if (!CreateThread(ThreadSocketHandler, NULL))
1804 printf("Error: CreateThread(ThreadSocketHandler) failed\n");
1806 // Initiate outbound connections
1807 if (!CreateThread(ThreadOpenConnections, NULL))
1808 printf("Error: CreateThread(ThreadOpenConnections) failed\n");
1811 if (!CreateThread(ThreadMessageHandler, NULL))
1812 printf("Error: CreateThread(ThreadMessageHandler) failed\n");
1814 // Generate coins in the background
1815 GenerateBitcoins(fGenerateBitcoins, pwalletMain);
1820 printf("StopNode()\n");
1822 nTransactionsUpdated++;
1823 int64 nStart = GetTime();
1824 while (vnThreadsRunning[0] > 0 || vnThreadsRunning[2] > 0 || vnThreadsRunning[3] > 0 || vnThreadsRunning[4] > 0
1826 || vnThreadsRunning[5] > 0
1830 if (GetTime() - nStart > 20)
1834 if (vnThreadsRunning[0] > 0) printf("ThreadSocketHandler still running\n");
1835 if (vnThreadsRunning[1] > 0) printf("ThreadOpenConnections still running\n");
1836 if (vnThreadsRunning[2] > 0) printf("ThreadMessageHandler still running\n");
1837 if (vnThreadsRunning[3] > 0) printf("ThreadBitcoinMiner still running\n");
1838 if (vnThreadsRunning[4] > 0) printf("ThreadRPCServer still running\n");
1839 if (fHaveUPnP && vnThreadsRunning[5] > 0) printf("ThreadMapPort still running\n");
1840 if (vnThreadsRunning[6] > 0) printf("ThreadDNSAddressSeed still running\n");
1841 while (vnThreadsRunning[2] > 0 || vnThreadsRunning[4] > 0)
1857 BOOST_FOREACH(CNode* pnode, vNodes)
1858 if (pnode->hSocket != INVALID_SOCKET)
1859 closesocket(pnode->hSocket);
1860 if (hListenSocket != INVALID_SOCKET)
1861 if (closesocket(hListenSocket) == SOCKET_ERROR)
1862 printf("closesocket(hListenSocket) failed with error %d\n", WSAGetLastError());
1865 // Shutdown Windows Sockets
1870 instance_of_cnetcleanup;