1362 lines
43 KiB
C++
1362 lines
43 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Distributed under the MIT/X11 software license, see the accompanying
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// file license.txt or http://www.opensource.org/licenses/mit-license.php.
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#include "headers.h"
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void ThreadMessageHandler2(void* parg);
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void ThreadSocketHandler2(void* parg);
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void ThreadOpenConnections2(void* parg);
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bool OpenNetworkConnection(const CAddress& addrConnect);
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//
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// Global state variables
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//
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bool fClient = false;
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uint64 nLocalServices = (fClient ? 0 : NODE_NETWORK);
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CAddress addrLocalHost(0, DEFAULT_PORT, nLocalServices);
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CNode* pnodeLocalHost = NULL;
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uint64 nLocalHostNonce = 0;
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array<int, 10> vnThreadsRunning;
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SOCKET hListenSocket = INVALID_SOCKET;
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int64 nThreadSocketHandlerHeartbeat = INT64_MAX;
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vector<CNode*> vNodes;
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CCriticalSection cs_vNodes;
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map<vector<unsigned char>, CAddress> mapAddresses;
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CCriticalSection cs_mapAddresses;
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map<CInv, CDataStream> mapRelay;
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deque<pair<int64, CInv> > vRelayExpiration;
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CCriticalSection cs_mapRelay;
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map<CInv, int64> mapAlreadyAskedFor;
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// Settings
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int fUseProxy = false;
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CAddress addrProxy("127.0.0.1:9050");
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void CNode::PushGetBlocks(CBlockIndex* pindexBegin, uint256 hashEnd)
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{
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// Filter out duplicate requests
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if (pindexBegin == pindexLastGetBlocksBegin && hashEnd == hashLastGetBlocksEnd)
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return;
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pindexLastGetBlocksBegin = pindexBegin;
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hashLastGetBlocksEnd = hashEnd;
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PushMessage("getblocks", CBlockLocator(pindexBegin), hashEnd);
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}
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bool ConnectSocket(const CAddress& addrConnect, SOCKET& hSocketRet)
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{
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hSocketRet = INVALID_SOCKET;
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SOCKET hSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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if (hSocket == INVALID_SOCKET)
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return false;
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#if defined(__BSD__) || defined(__WXOSX__)
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int set = 1;
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setsockopt(hSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(int));
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#endif
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bool fRoutable = !(addrConnect.GetByte(3) == 10 || (addrConnect.GetByte(3) == 192 && addrConnect.GetByte(2) == 168));
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bool fProxy = (fUseProxy && fRoutable);
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struct sockaddr_in sockaddr = (fProxy ? addrProxy.GetSockAddr() : addrConnect.GetSockAddr());
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if (connect(hSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR)
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{
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closesocket(hSocket);
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return false;
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}
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if (fProxy)
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{
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printf("proxy connecting %s\n", addrConnect.ToStringLog().c_str());
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char pszSocks4IP[] = "\4\1\0\0\0\0\0\0user";
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memcpy(pszSocks4IP + 2, &addrConnect.port, 2);
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memcpy(pszSocks4IP + 4, &addrConnect.ip, 4);
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char* pszSocks4 = pszSocks4IP;
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int nSize = sizeof(pszSocks4IP);
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int ret = send(hSocket, pszSocks4, nSize, MSG_NOSIGNAL);
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if (ret != nSize)
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{
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closesocket(hSocket);
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return error("Error sending to proxy");
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}
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char pchRet[8];
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if (recv(hSocket, pchRet, 8, 0) != 8)
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{
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closesocket(hSocket);
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return error("Error reading proxy response");
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}
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if (pchRet[1] != 0x5a)
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{
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closesocket(hSocket);
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if (pchRet[1] != 0x5b)
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printf("ERROR: Proxy returned error %d\n", pchRet[1]);
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return false;
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}
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printf("proxy connected %s\n", addrConnect.ToStringLog().c_str());
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}
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hSocketRet = hSocket;
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return true;
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}
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bool GetMyExternalIP2(const CAddress& addrConnect, const char* pszGet, const char* pszKeyword, unsigned int& ipRet)
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{
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SOCKET hSocket;
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if (!ConnectSocket(addrConnect, hSocket))
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return error("GetMyExternalIP() : connection to %s failed", addrConnect.ToString().c_str());
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send(hSocket, pszGet, strlen(pszGet), MSG_NOSIGNAL);
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string strLine;
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while (RecvLine(hSocket, strLine))
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{
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if (strLine.empty())
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{
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loop
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{
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if (!RecvLine(hSocket, strLine))
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{
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closesocket(hSocket);
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return false;
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}
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if (strLine.find(pszKeyword) != -1)
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{
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strLine = strLine.substr(strLine.find(pszKeyword) + strlen(pszKeyword));
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break;
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}
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}
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closesocket(hSocket);
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if (strLine.find("<"))
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strLine = strLine.substr(0, strLine.find("<"));
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strLine = strLine.substr(strspn(strLine.c_str(), " \t\n\r"));
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while (strLine.size() > 0 && isspace(strLine[strLine.size()-1]))
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strLine.resize(strLine.size()-1);
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CAddress addr(strLine.c_str());
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printf("GetMyExternalIP() received [%s] %s\n", strLine.c_str(), addr.ToString().c_str());
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if (addr.ip == 0 || addr.ip == INADDR_NONE || !addr.IsRoutable())
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return false;
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ipRet = addr.ip;
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return true;
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}
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}
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closesocket(hSocket);
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return error("GetMyExternalIP() : connection closed");
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}
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bool GetMyExternalIP(unsigned int& ipRet)
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{
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CAddress addrConnect;
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const char* pszGet;
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const char* pszKeyword;
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if (fUseProxy)
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return false;
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for (int nLookup = 0; nLookup <= 1; nLookup++)
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for (int nHost = 1; nHost <= 2; nHost++)
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{
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if (nHost == 1)
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{
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addrConnect = CAddress("70.86.96.218:80"); // www.ipaddressworld.com
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if (nLookup == 1)
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{
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struct hostent* phostent = gethostbyname("www.ipaddressworld.com");
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if (phostent && phostent->h_addr_list && phostent->h_addr_list[0])
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addrConnect = CAddress(*(u_long*)phostent->h_addr_list[0], htons(80));
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}
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pszGet = "GET /ip.php HTTP/1.1\r\n"
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"Host: www.ipaddressworld.com\r\n"
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"User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n"
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"Connection: close\r\n"
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"\r\n";
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pszKeyword = "IP:";
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}
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else if (nHost == 2)
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{
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addrConnect = CAddress("208.78.68.70:80"); // checkip.dyndns.org
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if (nLookup == 1)
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{
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struct hostent* phostent = gethostbyname("checkip.dyndns.org");
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if (phostent && phostent->h_addr_list && phostent->h_addr_list[0])
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addrConnect = CAddress(*(u_long*)phostent->h_addr_list[0], htons(80));
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}
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pszGet = "GET / HTTP/1.1\r\n"
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"Host: checkip.dyndns.org\r\n"
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"User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n"
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"Connection: close\r\n"
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"\r\n";
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pszKeyword = "Address:";
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}
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if (GetMyExternalIP2(addrConnect, pszGet, pszKeyword, ipRet))
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return true;
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}
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return false;
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}
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bool AddAddress(CAddress addr, bool fCurrentlyOnline)
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{
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if (!addr.IsRoutable())
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return false;
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if (addr.ip == addrLocalHost.ip)
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return false;
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if (fCurrentlyOnline)
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addr.nTime = GetAdjustedTime();
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CRITICAL_BLOCK(cs_mapAddresses)
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{
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map<vector<unsigned char>, CAddress>::iterator it = mapAddresses.find(addr.GetKey());
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if (it == mapAddresses.end())
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{
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// New address
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printf("AddAddress(%s)\n", addr.ToStringLog().c_str());
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mapAddresses.insert(make_pair(addr.GetKey(), addr));
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CAddrDB().WriteAddress(addr);
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return true;
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}
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else
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{
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bool fUpdated = false;
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CAddress& addrFound = (*it).second;
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if ((addrFound.nServices | addr.nServices) != addrFound.nServices)
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{
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// Services have been added
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addrFound.nServices |= addr.nServices;
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fUpdated = true;
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}
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int64 nUpdateInterval = (fCurrentlyOnline ? 60 * 60 : 24 * 60 * 60);
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if (addrFound.nTime < addr.nTime - nUpdateInterval)
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{
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// Periodically update most recently seen time
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addrFound.nTime = addr.nTime;
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fUpdated = true;
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}
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if (fUpdated)
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CAddrDB().WriteAddress(addrFound);
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}
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}
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return false;
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}
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void AddressCurrentlyConnected(const CAddress& addr)
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{
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CRITICAL_BLOCK(cs_mapAddresses)
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{
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// Only if it's been published already
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map<vector<unsigned char>, CAddress>::iterator it = mapAddresses.find(addr.GetKey());
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if (it != mapAddresses.end())
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{
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CAddress& addrFound = (*it).second;
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int64 nUpdateInterval = 20 * 60;
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if (addrFound.nTime < GetAdjustedTime() - nUpdateInterval)
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{
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// Periodically update most recently seen time
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addrFound.nTime = GetAdjustedTime();
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CAddrDB addrdb;
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addrdb.WriteAddress(addrFound);
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}
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}
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}
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}
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void AbandonRequests(void (*fn)(void*, CDataStream&), void* param1)
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{
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// If the dialog might get closed before the reply comes back,
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// call this in the destructor so it doesn't get called after it's deleted.
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CRITICAL_BLOCK(cs_vNodes)
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{
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foreach(CNode* pnode, vNodes)
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{
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CRITICAL_BLOCK(pnode->cs_mapRequests)
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{
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for (map<uint256, CRequestTracker>::iterator mi = pnode->mapRequests.begin(); mi != pnode->mapRequests.end();)
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{
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CRequestTracker& tracker = (*mi).second;
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if (tracker.fn == fn && tracker.param1 == param1)
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pnode->mapRequests.erase(mi++);
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else
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mi++;
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}
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}
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}
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}
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}
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//
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// Subscription methods for the broadcast and subscription system.
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// Channel numbers are message numbers, i.e. MSG_TABLE and MSG_PRODUCT.
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//
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// The subscription system uses a meet-in-the-middle strategy.
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// With 100,000 nodes, if senders broadcast to 1000 random nodes and receivers
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// subscribe to 1000 random nodes, 99.995% (1 - 0.99^1000) of messages will get through.
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//
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bool AnySubscribed(unsigned int nChannel)
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{
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if (pnodeLocalHost->IsSubscribed(nChannel))
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return true;
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CRITICAL_BLOCK(cs_vNodes)
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foreach(CNode* pnode, vNodes)
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if (pnode->IsSubscribed(nChannel))
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return true;
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return false;
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}
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bool CNode::IsSubscribed(unsigned int nChannel)
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{
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if (nChannel >= vfSubscribe.size())
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return false;
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return vfSubscribe[nChannel];
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}
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void CNode::Subscribe(unsigned int nChannel, unsigned int nHops)
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{
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if (nChannel >= vfSubscribe.size())
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return;
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if (!AnySubscribed(nChannel))
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{
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// Relay subscribe
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CRITICAL_BLOCK(cs_vNodes)
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foreach(CNode* pnode, vNodes)
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if (pnode != this)
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pnode->PushMessage("subscribe", nChannel, nHops);
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}
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vfSubscribe[nChannel] = true;
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}
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void CNode::CancelSubscribe(unsigned int nChannel)
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{
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if (nChannel >= vfSubscribe.size())
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return;
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// Prevent from relaying cancel if wasn't subscribed
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if (!vfSubscribe[nChannel])
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return;
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vfSubscribe[nChannel] = false;
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if (!AnySubscribed(nChannel))
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{
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// Relay subscription cancel
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CRITICAL_BLOCK(cs_vNodes)
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foreach(CNode* pnode, vNodes)
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if (pnode != this)
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pnode->PushMessage("sub-cancel", nChannel);
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// Clear memory, no longer subscribed
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if (nChannel == MSG_PRODUCT)
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CRITICAL_BLOCK(cs_mapProducts)
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mapProducts.clear();
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}
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}
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CNode* FindNode(unsigned int ip)
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{
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CRITICAL_BLOCK(cs_vNodes)
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{
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foreach(CNode* pnode, vNodes)
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if (pnode->addr.ip == ip)
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return (pnode);
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}
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return NULL;
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}
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CNode* FindNode(CAddress addr)
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{
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CRITICAL_BLOCK(cs_vNodes)
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{
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foreach(CNode* pnode, vNodes)
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if (pnode->addr == addr)
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return (pnode);
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}
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return NULL;
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}
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CNode* ConnectNode(CAddress addrConnect, int64 nTimeout)
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{
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if (addrConnect.ip == addrLocalHost.ip)
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return NULL;
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// Look for an existing connection
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CNode* pnode = FindNode(addrConnect.ip);
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if (pnode)
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{
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if (nTimeout != 0)
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pnode->AddRef(nTimeout);
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else
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pnode->AddRef();
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return pnode;
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}
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/// debug print
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printf("trying connection %s lastseen=%.1fhrs lasttry=%.1fhrs\n",
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addrConnect.ToStringLog().c_str(),
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(double)(addrConnect.nTime - GetAdjustedTime())/3600.0,
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(double)(addrConnect.nLastTry - GetAdjustedTime())/3600.0);
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CRITICAL_BLOCK(cs_mapAddresses)
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mapAddresses[addrConnect.GetKey()].nLastTry = GetAdjustedTime();
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// Connect
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SOCKET hSocket;
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if (ConnectSocket(addrConnect, hSocket))
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{
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/// debug print
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printf("connected %s\n", addrConnect.ToStringLog().c_str());
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// Set to nonblocking
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#ifdef __WXMSW__
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u_long nOne = 1;
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if (ioctlsocket(hSocket, FIONBIO, &nOne) == SOCKET_ERROR)
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printf("ConnectSocket() : ioctlsocket nonblocking setting failed, error %d\n", WSAGetLastError());
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#else
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if (fcntl(hSocket, F_SETFL, O_NONBLOCK) == SOCKET_ERROR)
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printf("ConnectSocket() : fcntl nonblocking setting failed, error %d\n", errno);
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#endif
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// Add node
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CNode* pnode = new CNode(hSocket, addrConnect, false);
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if (nTimeout != 0)
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pnode->AddRef(nTimeout);
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else
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pnode->AddRef();
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CRITICAL_BLOCK(cs_vNodes)
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vNodes.push_back(pnode);
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pnode->nTimeConnected = GetTime();
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return pnode;
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}
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else
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{
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return NULL;
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}
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}
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void CNode::CloseSocketDisconnect()
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{
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fDisconnect = true;
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if (hSocket != INVALID_SOCKET)
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{
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if (fDebug)
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printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
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printf("disconnecting node %s\n", addr.ToStringLog().c_str());
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closesocket(hSocket);
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hSocket = INVALID_SOCKET;
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}
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}
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void CNode::Cleanup()
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{
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// All of a nodes broadcasts and subscriptions are automatically torn down
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// when it goes down, so a node has to stay up to keep its broadcast going.
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CRITICAL_BLOCK(cs_mapProducts)
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for (map<uint256, CProduct>::iterator mi = mapProducts.begin(); mi != mapProducts.end();)
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AdvertRemoveSource(this, MSG_PRODUCT, 0, (*(mi++)).second);
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// Cancel subscriptions
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for (unsigned int nChannel = 0; nChannel < vfSubscribe.size(); nChannel++)
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if (vfSubscribe[nChannel])
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CancelSubscribe(nChannel);
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}
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void ThreadSocketHandler(void* parg)
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{
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IMPLEMENT_RANDOMIZE_STACK(ThreadSocketHandler(parg));
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try
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{
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vnThreadsRunning[0]++;
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ThreadSocketHandler2(parg);
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vnThreadsRunning[0]--;
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}
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catch (std::exception& e) {
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vnThreadsRunning[0]--;
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PrintException(&e, "ThreadSocketHandler()");
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} catch (...) {
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vnThreadsRunning[0]--;
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throw; // support pthread_cancel()
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}
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printf("ThreadSocketHandler exiting\n");
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}
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void ThreadSocketHandler2(void* parg)
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{
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printf("ThreadSocketHandler started\n");
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list<CNode*> vNodesDisconnected;
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int nPrevNodeCount = 0;
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loop
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{
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//
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// Disconnect nodes
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//
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CRITICAL_BLOCK(cs_vNodes)
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{
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// Disconnect unused nodes
|
|
vector<CNode*> vNodesCopy = vNodes;
|
|
foreach(CNode* pnode, vNodesCopy)
|
|
{
|
|
if (pnode->fDisconnect ||
|
|
(pnode->GetRefCount() <= 0 && pnode->vRecv.empty() && pnode->vSend.empty()))
|
|
{
|
|
// remove from vNodes
|
|
vNodes.erase(remove(vNodes.begin(), vNodes.end(), pnode), vNodes.end());
|
|
|
|
// close socket and cleanup
|
|
pnode->CloseSocketDisconnect();
|
|
pnode->Cleanup();
|
|
|
|
// hold in disconnected pool until all refs are released
|
|
pnode->nReleaseTime = max(pnode->nReleaseTime, GetTime() + 15 * 60);
|
|
if (pnode->fNetworkNode || pnode->fInbound)
|
|
pnode->Release();
|
|
vNodesDisconnected.push_back(pnode);
|
|
}
|
|
}
|
|
|
|
// Delete disconnected nodes
|
|
list<CNode*> vNodesDisconnectedCopy = vNodesDisconnected;
|
|
foreach(CNode* pnode, vNodesDisconnectedCopy)
|
|
{
|
|
// wait until threads are done using it
|
|
if (pnode->GetRefCount() <= 0)
|
|
{
|
|
bool fDelete = false;
|
|
TRY_CRITICAL_BLOCK(pnode->cs_vSend)
|
|
TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
|
|
TRY_CRITICAL_BLOCK(pnode->cs_mapRequests)
|
|
TRY_CRITICAL_BLOCK(pnode->cs_inventory)
|
|
fDelete = true;
|
|
if (fDelete)
|
|
{
|
|
vNodesDisconnected.remove(pnode);
|
|
delete pnode;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (vNodes.size() != nPrevNodeCount)
|
|
{
|
|
nPrevNodeCount = vNodes.size();
|
|
MainFrameRepaint();
|
|
}
|
|
|
|
|
|
//
|
|
// Find which sockets have data to receive
|
|
//
|
|
struct timeval timeout;
|
|
timeout.tv_sec = 0;
|
|
timeout.tv_usec = 50000; // frequency to poll pnode->vSend
|
|
|
|
fd_set fdsetRecv;
|
|
fd_set fdsetSend;
|
|
fd_set fdsetError;
|
|
FD_ZERO(&fdsetRecv);
|
|
FD_ZERO(&fdsetSend);
|
|
FD_ZERO(&fdsetError);
|
|
SOCKET hSocketMax = 0;
|
|
FD_SET(hListenSocket, &fdsetRecv);
|
|
hSocketMax = max(hSocketMax, hListenSocket);
|
|
CRITICAL_BLOCK(cs_vNodes)
|
|
{
|
|
foreach(CNode* pnode, vNodes)
|
|
{
|
|
if (pnode->hSocket == INVALID_SOCKET || pnode->hSocket < 0)
|
|
continue;
|
|
FD_SET(pnode->hSocket, &fdsetRecv);
|
|
FD_SET(pnode->hSocket, &fdsetError);
|
|
hSocketMax = max(hSocketMax, pnode->hSocket);
|
|
TRY_CRITICAL_BLOCK(pnode->cs_vSend)
|
|
if (!pnode->vSend.empty())
|
|
FD_SET(pnode->hSocket, &fdsetSend);
|
|
}
|
|
}
|
|
|
|
vnThreadsRunning[0]--;
|
|
int nSelect = select(hSocketMax + 1, &fdsetRecv, &fdsetSend, &fdsetError, &timeout);
|
|
vnThreadsRunning[0]++;
|
|
if (fShutdown)
|
|
return;
|
|
if (nSelect == SOCKET_ERROR)
|
|
{
|
|
int nErr = WSAGetLastError();
|
|
printf("socket select error %d\n", nErr);
|
|
for (int i = 0; i <= hSocketMax; i++)
|
|
FD_SET(i, &fdsetRecv);
|
|
FD_ZERO(&fdsetSend);
|
|
FD_ZERO(&fdsetError);
|
|
Sleep(timeout.tv_usec/1000);
|
|
}
|
|
|
|
|
|
//
|
|
// Accept new connections
|
|
//
|
|
if (FD_ISSET(hListenSocket, &fdsetRecv))
|
|
{
|
|
struct sockaddr_in sockaddr;
|
|
socklen_t len = sizeof(sockaddr);
|
|
SOCKET hSocket = accept(hListenSocket, (struct sockaddr*)&sockaddr, &len);
|
|
CAddress addr(sockaddr);
|
|
if (hSocket == INVALID_SOCKET)
|
|
{
|
|
if (WSAGetLastError() != WSAEWOULDBLOCK)
|
|
printf("socket error accept failed: %d\n", WSAGetLastError());
|
|
}
|
|
else
|
|
{
|
|
printf("accepted connection %s\n", addr.ToStringLog().c_str());
|
|
CNode* pnode = new CNode(hSocket, addr, true);
|
|
pnode->AddRef();
|
|
CRITICAL_BLOCK(cs_vNodes)
|
|
vNodes.push_back(pnode);
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// Service each socket
|
|
//
|
|
vector<CNode*> vNodesCopy;
|
|
CRITICAL_BLOCK(cs_vNodes)
|
|
{
|
|
vNodesCopy = vNodes;
|
|
foreach(CNode* pnode, vNodesCopy)
|
|
pnode->AddRef();
|
|
}
|
|
foreach(CNode* pnode, vNodesCopy)
|
|
{
|
|
if (fShutdown)
|
|
return;
|
|
|
|
//
|
|
// Receive
|
|
//
|
|
if (pnode->hSocket == INVALID_SOCKET)
|
|
continue;
|
|
if (FD_ISSET(pnode->hSocket, &fdsetRecv) || FD_ISSET(pnode->hSocket, &fdsetError))
|
|
{
|
|
TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
|
|
{
|
|
CDataStream& vRecv = pnode->vRecv;
|
|
unsigned int nPos = vRecv.size();
|
|
|
|
// typical socket buffer is 8K-64K
|
|
char pchBuf[0x10000];
|
|
int nBytes = recv(pnode->hSocket, pchBuf, sizeof(pchBuf), MSG_DONTWAIT);
|
|
if (nBytes > 0)
|
|
{
|
|
vRecv.resize(nPos + nBytes);
|
|
memcpy(&vRecv[nPos], pchBuf, nBytes);
|
|
pnode->nLastRecv = GetTime();
|
|
}
|
|
else if (nBytes == 0)
|
|
{
|
|
// socket closed gracefully
|
|
if (!pnode->fDisconnect)
|
|
printf("socket closed\n");
|
|
pnode->CloseSocketDisconnect();
|
|
}
|
|
else if (nBytes < 0)
|
|
{
|
|
// error
|
|
int nErr = WSAGetLastError();
|
|
if (nErr != WSAEWOULDBLOCK && nErr != WSAEMSGSIZE && nErr != WSAEINTR && nErr != WSAEINPROGRESS)
|
|
{
|
|
if (!pnode->fDisconnect)
|
|
printf("socket recv error %d\n", nErr);
|
|
pnode->CloseSocketDisconnect();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Send
|
|
//
|
|
if (pnode->hSocket == INVALID_SOCKET)
|
|
continue;
|
|
if (FD_ISSET(pnode->hSocket, &fdsetSend))
|
|
{
|
|
TRY_CRITICAL_BLOCK(pnode->cs_vSend)
|
|
{
|
|
CDataStream& vSend = pnode->vSend;
|
|
if (!vSend.empty())
|
|
{
|
|
int nBytes = send(pnode->hSocket, &vSend[0], vSend.size(), MSG_NOSIGNAL | MSG_DONTWAIT);
|
|
if (nBytes > 0)
|
|
{
|
|
vSend.erase(vSend.begin(), vSend.begin() + nBytes);
|
|
pnode->nLastSend = GetTime();
|
|
}
|
|
else if (nBytes < 0)
|
|
{
|
|
// error
|
|
int nErr = WSAGetLastError();
|
|
if (nErr != WSAEWOULDBLOCK && nErr != WSAEMSGSIZE && nErr != WSAEINTR && nErr != WSAEINPROGRESS)
|
|
{
|
|
printf("socket send error %d\n", nErr);
|
|
pnode->CloseSocketDisconnect();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Inactivity checking
|
|
//
|
|
if (pnode->vSend.empty())
|
|
pnode->nLastSendEmpty = GetTime();
|
|
if (GetTime() - pnode->nTimeConnected > 60)
|
|
{
|
|
if (pnode->nLastRecv == 0 || pnode->nLastSend == 0)
|
|
{
|
|
printf("socket no message in first 60 seconds, %d %d\n", pnode->nLastRecv != 0, pnode->nLastSend != 0);
|
|
pnode->fDisconnect = true;
|
|
}
|
|
else if (GetTime() - pnode->nLastSend > 90*60 && GetTime() - pnode->nLastSendEmpty > 90*60)
|
|
{
|
|
printf("socket not sending\n");
|
|
pnode->fDisconnect = true;
|
|
}
|
|
else if (GetTime() - pnode->nLastRecv > 90*60)
|
|
{
|
|
printf("socket inactivity timeout\n");
|
|
pnode->fDisconnect = true;
|
|
}
|
|
}
|
|
}
|
|
CRITICAL_BLOCK(cs_vNodes)
|
|
{
|
|
foreach(CNode* pnode, vNodesCopy)
|
|
pnode->Release();
|
|
}
|
|
|
|
nThreadSocketHandlerHeartbeat = GetTime();
|
|
Sleep(10);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void ThreadOpenConnections(void* parg)
|
|
{
|
|
IMPLEMENT_RANDOMIZE_STACK(ThreadOpenConnections(parg));
|
|
try
|
|
{
|
|
vnThreadsRunning[1]++;
|
|
ThreadOpenConnections2(parg);
|
|
vnThreadsRunning[1]--;
|
|
}
|
|
catch (std::exception& e) {
|
|
vnThreadsRunning[1]--;
|
|
PrintException(&e, "ThreadOpenConnections()");
|
|
} catch (...) {
|
|
vnThreadsRunning[1]--;
|
|
PrintException(NULL, "ThreadOpenConnections()");
|
|
}
|
|
printf("ThreadOpenConnections exiting\n");
|
|
}
|
|
|
|
void ThreadOpenConnections2(void* parg)
|
|
{
|
|
printf("ThreadOpenConnections started\n");
|
|
|
|
// Connect to specific addresses
|
|
if (mapArgs.count("-connect"))
|
|
{
|
|
for (int64 nLoop = 0;; nLoop++)
|
|
{
|
|
foreach(string strAddr, mapMultiArgs["-connect"])
|
|
{
|
|
CAddress addr(strAddr, NODE_NETWORK);
|
|
if (addr.IsValid())
|
|
OpenNetworkConnection(addr);
|
|
for (int i = 0; i < 10 && i < nLoop; i++)
|
|
{
|
|
Sleep(500);
|
|
if (fShutdown)
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Connect to manually added nodes first
|
|
if (mapArgs.count("-addnode"))
|
|
{
|
|
foreach(string strAddr, mapMultiArgs["-addnode"])
|
|
{
|
|
CAddress addr(strAddr, NODE_NETWORK);
|
|
if (addr.IsValid())
|
|
{
|
|
OpenNetworkConnection(addr);
|
|
Sleep(500);
|
|
if (fShutdown)
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Initiate network connections
|
|
loop
|
|
{
|
|
// Wait
|
|
vnThreadsRunning[1]--;
|
|
Sleep(500);
|
|
const int nMaxConnections = 15;
|
|
while (vNodes.size() >= nMaxConnections)
|
|
{
|
|
Sleep(2000);
|
|
if (fShutdown)
|
|
return;
|
|
}
|
|
vnThreadsRunning[1]++;
|
|
if (fShutdown)
|
|
return;
|
|
|
|
//
|
|
// Choose an address to connect to based on most recently seen
|
|
//
|
|
CAddress addrConnect;
|
|
int64 nBest = INT64_MIN;
|
|
|
|
// Do this here so we don't have to critsect vNodes inside mapAddresses critsect
|
|
set<unsigned int> setConnected;
|
|
CRITICAL_BLOCK(cs_vNodes)
|
|
foreach(CNode* pnode, vNodes)
|
|
setConnected.insert(pnode->addr.ip);
|
|
|
|
CRITICAL_BLOCK(cs_mapAddresses)
|
|
{
|
|
foreach(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)
|
|
{
|
|
const CAddress& addr = item.second;
|
|
if (!addr.IsIPv4() || !addr.IsValid() || setConnected.count(addr.ip))
|
|
continue;
|
|
int64 nSinceLastSeen = GetAdjustedTime() - addr.nTime;
|
|
int64 nSinceLastTry = GetAdjustedTime() - addr.nLastTry;
|
|
|
|
// Randomize the order in a deterministic way, putting the standard port first
|
|
int64 nRandomizer = (uint64)(addr.nLastTry * 9567851 + addr.ip * 7789) % (30 * 60);
|
|
if (addr.port != DEFAULT_PORT)
|
|
nRandomizer += 30 * 60;
|
|
|
|
// Last seen Base retry frequency
|
|
// <1 hour 10 min
|
|
// 1 hour 1 hour
|
|
// 4 hours 2 hours
|
|
// 24 hours 5 hours
|
|
// 48 hours 7 hours
|
|
// 7 days 13 hours
|
|
// 30 days 27 hours
|
|
// 90 days 46 hours
|
|
// 365 days 93 hours
|
|
int64 nDelay = (int64)(3600.0 * sqrt(fabs((double)nSinceLastSeen) / 3600.0) + nRandomizer);
|
|
|
|
// Fast reconnect for one hour after last seen
|
|
if (nSinceLastSeen < 60 * 60)
|
|
nDelay = 10 * 60;
|
|
|
|
// Limit retry frequency
|
|
if (nSinceLastTry < nDelay)
|
|
continue;
|
|
|
|
// If we have IRC, we'll be notified when they first come online,
|
|
// and again every 24 hours by the refresh broadcast.
|
|
if (nGotIRCAddresses > 0 && vNodes.size() >= 2 && nSinceLastSeen > 24 * 60 * 60)
|
|
continue;
|
|
|
|
// Only try the old stuff if we don't have enough connections
|
|
if (vNodes.size() >= 2 && nSinceLastSeen > 7 * 24 * 60 * 60)
|
|
continue;
|
|
if (vNodes.size() >= 5 && nSinceLastSeen > 24 * 60 * 60)
|
|
continue;
|
|
|
|
// If multiple addresses are ready, prioritize by time since
|
|
// last seen and time since last tried.
|
|
int64 nScore = min(nSinceLastTry, (int64)24 * 60 * 60) - nSinceLastSeen - nRandomizer;
|
|
if (nScore > nBest)
|
|
{
|
|
nBest = nScore;
|
|
addrConnect = addr;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (addrConnect.IsValid())
|
|
OpenNetworkConnection(addrConnect);
|
|
}
|
|
}
|
|
|
|
bool OpenNetworkConnection(const CAddress& addrConnect)
|
|
{
|
|
//
|
|
// Initiate outbound network connection
|
|
//
|
|
if (fShutdown)
|
|
return false;
|
|
if (addrConnect.ip == addrLocalHost.ip || !addrConnect.IsIPv4() || FindNode(addrConnect.ip))
|
|
return false;
|
|
|
|
vnThreadsRunning[1]--;
|
|
CNode* pnode = ConnectNode(addrConnect);
|
|
vnThreadsRunning[1]++;
|
|
if (fShutdown)
|
|
return false;
|
|
if (!pnode)
|
|
return false;
|
|
pnode->fNetworkNode = true;
|
|
|
|
if (addrLocalHost.IsRoutable() && !fUseProxy)
|
|
{
|
|
// Advertise our address
|
|
vector<CAddress> vAddrToSend;
|
|
vAddrToSend.push_back(addrLocalHost);
|
|
pnode->PushMessage("addr", vAddrToSend);
|
|
}
|
|
|
|
// Get as many addresses as we can
|
|
pnode->PushMessage("getaddr");
|
|
pnode->fGetAddr = true; // don't relay the results of the getaddr
|
|
|
|
////// should the one on the receiving end do this too?
|
|
// Subscribe our local subscription list
|
|
const unsigned int nHops = 0;
|
|
for (unsigned int nChannel = 0; nChannel < pnodeLocalHost->vfSubscribe.size(); nChannel++)
|
|
if (pnodeLocalHost->vfSubscribe[nChannel])
|
|
pnode->PushMessage("subscribe", nChannel, nHops);
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void ThreadMessageHandler(void* parg)
|
|
{
|
|
IMPLEMENT_RANDOMIZE_STACK(ThreadMessageHandler(parg));
|
|
try
|
|
{
|
|
vnThreadsRunning[2]++;
|
|
ThreadMessageHandler2(parg);
|
|
vnThreadsRunning[2]--;
|
|
}
|
|
catch (std::exception& e) {
|
|
vnThreadsRunning[2]--;
|
|
PrintException(&e, "ThreadMessageHandler()");
|
|
} catch (...) {
|
|
vnThreadsRunning[2]--;
|
|
PrintException(NULL, "ThreadMessageHandler()");
|
|
}
|
|
printf("ThreadMessageHandler exiting\n");
|
|
}
|
|
|
|
void ThreadMessageHandler2(void* parg)
|
|
{
|
|
printf("ThreadMessageHandler started\n");
|
|
SetThreadPriority(THREAD_PRIORITY_BELOW_NORMAL);
|
|
while (!fShutdown)
|
|
{
|
|
// Poll the connected nodes for messages
|
|
vector<CNode*> vNodesCopy;
|
|
CRITICAL_BLOCK(cs_vNodes)
|
|
{
|
|
vNodesCopy = vNodes;
|
|
foreach(CNode* pnode, vNodesCopy)
|
|
pnode->AddRef();
|
|
}
|
|
foreach(CNode* pnode, vNodesCopy)
|
|
{
|
|
// Receive messages
|
|
TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
|
|
ProcessMessages(pnode);
|
|
if (fShutdown)
|
|
return;
|
|
|
|
// Send messages
|
|
TRY_CRITICAL_BLOCK(pnode->cs_vSend)
|
|
SendMessages(pnode);
|
|
if (fShutdown)
|
|
return;
|
|
}
|
|
CRITICAL_BLOCK(cs_vNodes)
|
|
{
|
|
foreach(CNode* pnode, vNodesCopy)
|
|
pnode->Release();
|
|
}
|
|
|
|
// Wait and allow messages to bunch up
|
|
vnThreadsRunning[2]--;
|
|
Sleep(100);
|
|
vnThreadsRunning[2]++;
|
|
if (fShutdown)
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
bool BindListenPort(string& strError)
|
|
{
|
|
strError = "";
|
|
int nOne = 1;
|
|
|
|
#ifdef __WXMSW__
|
|
// Initialize Windows Sockets
|
|
WSADATA wsadata;
|
|
int ret = WSAStartup(MAKEWORD(2,2), &wsadata);
|
|
if (ret != NO_ERROR)
|
|
{
|
|
strError = strprintf("Error: TCP/IP socket library failed to start (WSAStartup returned error %d)", ret);
|
|
printf("%s\n", strError.c_str());
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
// Create socket for listening for incoming connections
|
|
hListenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
|
|
if (hListenSocket == INVALID_SOCKET)
|
|
{
|
|
strError = strprintf("Error: Couldn't open socket for incoming connections (socket returned error %d)", WSAGetLastError());
|
|
printf("%s\n", strError.c_str());
|
|
return false;
|
|
}
|
|
|
|
#if defined(__BSD__) || defined(__WXOSX__)
|
|
// Different way of disabling SIGPIPE on BSD
|
|
setsockopt(hListenSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&nOne, sizeof(int));
|
|
#endif
|
|
|
|
#ifndef __WXMSW__
|
|
// Allow binding if the port is still in TIME_WAIT state after
|
|
// the program was closed and restarted. Not an issue on windows.
|
|
setsockopt(hListenSocket, SOL_SOCKET, SO_REUSEADDR, (void*)&nOne, sizeof(int));
|
|
#endif
|
|
|
|
#ifdef __WXMSW__
|
|
// Set to nonblocking, incoming connections will also inherit this
|
|
if (ioctlsocket(hListenSocket, FIONBIO, (u_long*)&nOne) == SOCKET_ERROR)
|
|
#else
|
|
if (fcntl(hListenSocket, F_SETFL, O_NONBLOCK) == SOCKET_ERROR)
|
|
#endif
|
|
{
|
|
strError = strprintf("Error: Couldn't set properties on socket for incoming connections (error %d)", WSAGetLastError());
|
|
printf("%s\n", strError.c_str());
|
|
return false;
|
|
}
|
|
|
|
// The sockaddr_in structure specifies the address family,
|
|
// IP address, and port for the socket that is being bound
|
|
struct sockaddr_in sockaddr;
|
|
memset(&sockaddr, 0, sizeof(sockaddr));
|
|
sockaddr.sin_family = AF_INET;
|
|
sockaddr.sin_addr.s_addr = INADDR_ANY; // bind to all IPs on this computer
|
|
sockaddr.sin_port = DEFAULT_PORT;
|
|
if (::bind(hListenSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR)
|
|
{
|
|
int nErr = WSAGetLastError();
|
|
if (nErr == WSAEADDRINUSE)
|
|
strError = strprintf("Unable to bind to port %d on this computer. Bitcoin is probably already running.", ntohs(sockaddr.sin_port));
|
|
else
|
|
strError = strprintf("Error: Unable to bind to port %d on this computer (bind returned error %d)", ntohs(sockaddr.sin_port), nErr);
|
|
printf("%s\n", strError.c_str());
|
|
return false;
|
|
}
|
|
printf("Bound to port %d\n", ntohs(sockaddr.sin_port));
|
|
|
|
// Listen for incoming connections
|
|
if (listen(hListenSocket, SOMAXCONN) == SOCKET_ERROR)
|
|
{
|
|
strError = strprintf("Error: Listening for incoming connections failed (listen returned error %d)", WSAGetLastError());
|
|
printf("%s\n", strError.c_str());
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void StartNode(void* parg)
|
|
{
|
|
if (pnodeLocalHost == NULL)
|
|
pnodeLocalHost = new CNode(INVALID_SOCKET, CAddress("127.0.0.1", nLocalServices));
|
|
|
|
#ifdef __WXMSW__
|
|
// Get local host ip
|
|
char pszHostName[1000] = "";
|
|
if (gethostname(pszHostName, sizeof(pszHostName)) != SOCKET_ERROR)
|
|
{
|
|
struct hostent* phostent = gethostbyname(pszHostName);
|
|
if (phostent)
|
|
{
|
|
// Take the first IP that isn't loopback 127.x.x.x
|
|
for (int i = 0; phostent->h_addr_list[i] != NULL; i++)
|
|
printf("host ip %d: %s\n", i, CAddress(*(unsigned int*)phostent->h_addr_list[i]).ToStringIP().c_str());
|
|
for (int i = 0; phostent->h_addr_list[i] != NULL; i++)
|
|
{
|
|
CAddress addr(*(unsigned int*)phostent->h_addr_list[i], DEFAULT_PORT, nLocalServices);
|
|
if (addr.IsValid() && addr.GetByte(3) != 127)
|
|
{
|
|
addrLocalHost = addr;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
// Get local host ip
|
|
struct ifaddrs* myaddrs;
|
|
if (getifaddrs(&myaddrs) == 0)
|
|
{
|
|
for (struct ifaddrs* ifa = myaddrs; ifa != NULL; ifa = ifa->ifa_next)
|
|
{
|
|
if (ifa->ifa_addr == NULL) continue;
|
|
if ((ifa->ifa_flags & IFF_UP) == 0) continue;
|
|
if (strcmp(ifa->ifa_name, "lo") == 0) continue;
|
|
if (strcmp(ifa->ifa_name, "lo0") == 0) continue;
|
|
char pszIP[100];
|
|
if (ifa->ifa_addr->sa_family == AF_INET)
|
|
{
|
|
struct sockaddr_in* s4 = (struct sockaddr_in*)(ifa->ifa_addr);
|
|
if (inet_ntop(ifa->ifa_addr->sa_family, (void*)&(s4->sin_addr), pszIP, sizeof(pszIP)) != NULL)
|
|
printf("ipv4 %s: %s\n", ifa->ifa_name, pszIP);
|
|
|
|
// Take the first IP that isn't loopback 127.x.x.x
|
|
CAddress addr(*(unsigned int*)&s4->sin_addr, DEFAULT_PORT, nLocalServices);
|
|
if (addr.IsValid() && addr.GetByte(3) != 127)
|
|
{
|
|
addrLocalHost = addr;
|
|
break;
|
|
}
|
|
}
|
|
else if (ifa->ifa_addr->sa_family == AF_INET6)
|
|
{
|
|
struct sockaddr_in6* s6 = (struct sockaddr_in6*)(ifa->ifa_addr);
|
|
if (inet_ntop(ifa->ifa_addr->sa_family, (void*)&(s6->sin6_addr), pszIP, sizeof(pszIP)) != NULL)
|
|
printf("ipv6 %s: %s\n", ifa->ifa_name, pszIP);
|
|
}
|
|
}
|
|
freeifaddrs(myaddrs);
|
|
}
|
|
#endif
|
|
printf("addrLocalHost = %s\n", addrLocalHost.ToString().c_str());
|
|
|
|
// Get our external IP address for incoming connections
|
|
if (fUseProxy)
|
|
{
|
|
// Proxies can't take incoming connections
|
|
addrLocalHost.ip = CAddress("0.0.0.0").ip;
|
|
printf("addrLocalHost = %s\n", addrLocalHost.ToString().c_str());
|
|
}
|
|
else
|
|
{
|
|
if (addrIncoming.IsValid())
|
|
addrLocalHost.ip = addrIncoming.ip;
|
|
|
|
if (GetMyExternalIP(addrLocalHost.ip))
|
|
{
|
|
addrIncoming = addrLocalHost;
|
|
CWalletDB().WriteSetting("addrIncoming", addrIncoming);
|
|
printf("addrLocalHost = %s\n", addrLocalHost.ToString().c_str());
|
|
}
|
|
}
|
|
|
|
//
|
|
// Start threads
|
|
//
|
|
|
|
// Get addresses from IRC and advertise ours
|
|
if (!CreateThread(ThreadIRCSeed, NULL))
|
|
printf("Error: CreateThread(ThreadIRCSeed) failed\n");
|
|
|
|
// Send and receive from sockets, accept connections
|
|
pthread_t hThreadSocketHandler = CreateThread(ThreadSocketHandler, NULL, true);
|
|
|
|
// Initiate outbound connections
|
|
if (!CreateThread(ThreadOpenConnections, NULL))
|
|
printf("Error: CreateThread(ThreadOpenConnections) failed\n");
|
|
|
|
// Process messages
|
|
if (!CreateThread(ThreadMessageHandler, NULL))
|
|
printf("Error: CreateThread(ThreadMessageHandler) failed\n");
|
|
|
|
// Generate coins in the background
|
|
GenerateBitcoins(fGenerateBitcoins);
|
|
|
|
//
|
|
// Thread monitoring
|
|
// Not really needed anymore, the cause of the hanging was fixed
|
|
//
|
|
loop
|
|
{
|
|
Sleep(1000);
|
|
if (fShutdown)
|
|
return;
|
|
if (GetTime() - nThreadSocketHandlerHeartbeat > 15 * 60)
|
|
{
|
|
// First see if closing sockets will free it
|
|
printf("*** ThreadSocketHandler is stopped ***\n");
|
|
CRITICAL_BLOCK(cs_vNodes)
|
|
{
|
|
foreach(CNode* pnode, vNodes)
|
|
{
|
|
bool fGot = false;
|
|
TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
|
|
TRY_CRITICAL_BLOCK(pnode->cs_vSend)
|
|
fGot = true;
|
|
if (!fGot)
|
|
{
|
|
printf("*** closing socket\n");
|
|
pnode->CloseSocketDisconnect();
|
|
}
|
|
}
|
|
}
|
|
Sleep(10000);
|
|
if (fShutdown)
|
|
return;
|
|
if (GetTime() - nThreadSocketHandlerHeartbeat < 60)
|
|
continue;
|
|
|
|
// Hopefully it never comes to this.
|
|
// We know it'll always be hung in the recv or send call.
|
|
// cs_vRecv or cs_vSend may be left permanently unreleased,
|
|
// but we always only use TRY_CRITICAL_SECTION on them.
|
|
printf("*** Restarting ThreadSocketHandler ***\n");
|
|
TerminateThread(hThreadSocketHandler, 0);
|
|
#ifdef __WXMSW__
|
|
CloseHandle(hThreadSocketHandler);
|
|
#endif
|
|
vnThreadsRunning[0] = 0;
|
|
|
|
// Restart
|
|
hThreadSocketHandler = CreateThread(ThreadSocketHandler, NULL, true);
|
|
nThreadSocketHandlerHeartbeat = GetTime();
|
|
}
|
|
}
|
|
}
|
|
|
|
bool StopNode()
|
|
{
|
|
printf("StopNode()\n");
|
|
fShutdown = true;
|
|
nTransactionsUpdated++;
|
|
int64 nStart = GetTime();
|
|
while (vnThreadsRunning[0] > 0 || vnThreadsRunning[2] > 0 || vnThreadsRunning[3] > 0 || vnThreadsRunning[4] > 0)
|
|
{
|
|
if (GetTime() - nStart > 20)
|
|
break;
|
|
Sleep(20);
|
|
}
|
|
if (vnThreadsRunning[0] > 0) printf("ThreadSocketHandler still running\n");
|
|
if (vnThreadsRunning[1] > 0) printf("ThreadOpenConnections still running\n");
|
|
if (vnThreadsRunning[2] > 0) printf("ThreadMessageHandler still running\n");
|
|
if (vnThreadsRunning[3] > 0) printf("ThreadBitcoinMiner still running\n");
|
|
if (vnThreadsRunning[4] > 0) printf("ThreadRPCServer still running\n");
|
|
while (vnThreadsRunning[2] > 0 || vnThreadsRunning[4] > 0)
|
|
Sleep(20);
|
|
Sleep(50);
|
|
|
|
return true;
|
|
}
|
|
|
|
class CNetCleanup
|
|
{
|
|
public:
|
|
CNetCleanup()
|
|
{
|
|
}
|
|
~CNetCleanup()
|
|
{
|
|
// Close sockets
|
|
foreach(CNode* pnode, vNodes)
|
|
if (pnode->hSocket != INVALID_SOCKET)
|
|
closesocket(pnode->hSocket);
|
|
if (hListenSocket != INVALID_SOCKET)
|
|
if (closesocket(hListenSocket) == SOCKET_ERROR)
|
|
printf("closesocket(hListenSocket) failed with error %d\n", WSAGetLastError());
|
|
|
|
#ifdef __WXMSW__
|
|
// Shutdown Windows Sockets
|
|
WSACleanup();
|
|
#endif
|
|
}
|
|
}
|
|
instance_of_cnetcleanup;
|