diff options
author | s_nakamoto <s_nakamoto@1a98c847-1fd6-4fd8-948a-caf3550aa51b> | 2010-08-29 16:58:15 +0000 |
---|---|---|
committer | s_nakamoto <s_nakamoto@1a98c847-1fd6-4fd8-948a-caf3550aa51b> | 2010-08-29 16:58:15 +0000 |
commit | 0a61b0df1224a5470bcddab302bc199ca5a9e356 (patch) | |
tree | 78560a03540864c3c6d6fcaf9c334f479cafc1bb /net.cpp | |
parent | 5b721607b1057df4dfe97f80d235ed372312f398 (diff) | |
download | bitcoin-0a61b0df1224a5470bcddab302bc199ca5a9e356.tar.xz |
propset svn:eol-style native
git-svn-id: https://bitcoin.svn.sourceforge.net/svnroot/bitcoin/trunk@146 1a98c847-1fd6-4fd8-948a-caf3550aa51b
Diffstat (limited to 'net.cpp')
-rw-r--r-- | net.cpp | 2932 |
1 files changed, 1466 insertions, 1466 deletions
@@ -1,1466 +1,1466 @@ -// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Distributed under the MIT/X11 software license, see the accompanying
-// file license.txt or http://www.opensource.org/licenses/mit-license.php.
-
-#include "headers.h"
-
-static const int MAX_OUTBOUND_CONNECTIONS = 8;
-
-void ThreadMessageHandler2(void* parg);
-void ThreadSocketHandler2(void* parg);
-void ThreadOpenConnections2(void* parg);
-bool OpenNetworkConnection(const CAddress& addrConnect);
-
-
-
-
-
-//
-// Global state variables
-//
-bool fClient = false;
-uint64 nLocalServices = (fClient ? 0 : NODE_NETWORK);
-CAddress addrLocalHost(0, DEFAULT_PORT, nLocalServices);
-CNode* pnodeLocalHost = NULL;
-uint64 nLocalHostNonce = 0;
-array<int, 10> vnThreadsRunning;
-SOCKET hListenSocket = INVALID_SOCKET;
-int64 nThreadSocketHandlerHeartbeat = INT64_MAX;
-
-vector<CNode*> vNodes;
-CCriticalSection cs_vNodes;
-map<vector<unsigned char>, CAddress> mapAddresses;
-CCriticalSection cs_mapAddresses;
-map<CInv, CDataStream> mapRelay;
-deque<pair<int64, CInv> > vRelayExpiration;
-CCriticalSection cs_mapRelay;
-map<CInv, int64> mapAlreadyAskedFor;
-
-// Settings
-int fUseProxy = false;
-CAddress addrProxy("127.0.0.1:9050");
-
-
-
-
-
-void CNode::PushGetBlocks(CBlockIndex* pindexBegin, uint256 hashEnd)
-{
- // Filter out duplicate requests
- if (pindexBegin == pindexLastGetBlocksBegin && hashEnd == hashLastGetBlocksEnd)
- return;
- pindexLastGetBlocksBegin = pindexBegin;
- hashLastGetBlocksEnd = hashEnd;
-
- PushMessage("getblocks", CBlockLocator(pindexBegin), hashEnd);
-}
-
-
-
-
-
-bool ConnectSocket(const CAddress& addrConnect, SOCKET& hSocketRet)
-{
- hSocketRet = INVALID_SOCKET;
-
- SOCKET hSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
- if (hSocket == INVALID_SOCKET)
- return false;
-#ifdef BSD
- int set = 1;
- setsockopt(hSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(int));
-#endif
-
- bool fRoutable = !(addrConnect.GetByte(3) == 10 || (addrConnect.GetByte(3) == 192 && addrConnect.GetByte(2) == 168));
- bool fProxy = (fUseProxy && fRoutable);
- struct sockaddr_in sockaddr = (fProxy ? addrProxy.GetSockAddr() : addrConnect.GetSockAddr());
-
- if (connect(hSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR)
- {
- closesocket(hSocket);
- return false;
- }
-
- if (fProxy)
- {
- printf("proxy connecting %s\n", addrConnect.ToStringLog().c_str());
- char pszSocks4IP[] = "\4\1\0\0\0\0\0\0user";
- memcpy(pszSocks4IP + 2, &addrConnect.port, 2);
- memcpy(pszSocks4IP + 4, &addrConnect.ip, 4);
- char* pszSocks4 = pszSocks4IP;
- int nSize = sizeof(pszSocks4IP);
-
- int ret = send(hSocket, pszSocks4, nSize, MSG_NOSIGNAL);
- if (ret != nSize)
- {
- closesocket(hSocket);
- return error("Error sending to proxy");
- }
- char pchRet[8];
- if (recv(hSocket, pchRet, 8, 0) != 8)
- {
- closesocket(hSocket);
- return error("Error reading proxy response");
- }
- if (pchRet[1] != 0x5a)
- {
- closesocket(hSocket);
- if (pchRet[1] != 0x5b)
- printf("ERROR: Proxy returned error %d\n", pchRet[1]);
- return false;
- }
- printf("proxy connected %s\n", addrConnect.ToStringLog().c_str());
- }
-
- hSocketRet = hSocket;
- return true;
-}
-
-
-
-bool GetMyExternalIP2(const CAddress& addrConnect, const char* pszGet, const char* pszKeyword, unsigned int& ipRet)
-{
- SOCKET hSocket;
- if (!ConnectSocket(addrConnect, hSocket))
- return error("GetMyExternalIP() : connection to %s failed", addrConnect.ToString().c_str());
-
- send(hSocket, pszGet, strlen(pszGet), MSG_NOSIGNAL);
-
- string strLine;
- while (RecvLine(hSocket, strLine))
- {
- if (strLine.empty())
- {
- loop
- {
- if (!RecvLine(hSocket, strLine))
- {
- closesocket(hSocket);
- return false;
- }
- if (strLine.find(pszKeyword) != -1)
- {
- strLine = strLine.substr(strLine.find(pszKeyword) + strlen(pszKeyword));
- break;
- }
- }
- closesocket(hSocket);
- if (strLine.find("<"))
- strLine = strLine.substr(0, strLine.find("<"));
- strLine = strLine.substr(strspn(strLine.c_str(), " \t\n\r"));
- while (strLine.size() > 0 && isspace(strLine[strLine.size()-1]))
- strLine.resize(strLine.size()-1);
- CAddress addr(strLine.c_str());
- printf("GetMyExternalIP() received [%s] %s\n", strLine.c_str(), addr.ToString().c_str());
- if (addr.ip == 0 || addr.ip == INADDR_NONE || !addr.IsRoutable())
- return false;
- ipRet = addr.ip;
- return true;
- }
- }
- closesocket(hSocket);
- return error("GetMyExternalIP() : connection closed");
-}
-
-
-bool GetMyExternalIP(unsigned int& ipRet)
-{
- CAddress addrConnect;
- const char* pszGet;
- const char* pszKeyword;
-
- if (fUseProxy)
- return false;
-
- for (int nLookup = 0; nLookup <= 1; nLookup++)
- for (int nHost = 1; nHost <= 2; nHost++)
- {
- if (nHost == 1)
- {
- addrConnect = CAddress("70.86.96.218:80"); // www.ipaddressworld.com
-
- if (nLookup == 1)
- {
- struct hostent* phostent = gethostbyname("www.ipaddressworld.com");
- if (phostent && phostent->h_addr_list && phostent->h_addr_list[0])
- addrConnect = CAddress(*(u_long*)phostent->h_addr_list[0], htons(80));
- }
-
- pszGet = "GET /ip.php HTTP/1.1\r\n"
- "Host: www.ipaddressworld.com\r\n"
- "User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n"
- "Connection: close\r\n"
- "\r\n";
-
- pszKeyword = "IP:";
- }
- else if (nHost == 2)
- {
- addrConnect = CAddress("208.78.68.70:80"); // checkip.dyndns.org
-
- if (nLookup == 1)
- {
- struct hostent* phostent = gethostbyname("checkip.dyndns.org");
- if (phostent && phostent->h_addr_list && phostent->h_addr_list[0])
- addrConnect = CAddress(*(u_long*)phostent->h_addr_list[0], htons(80));
- }
-
- pszGet = "GET / HTTP/1.1\r\n"
- "Host: checkip.dyndns.org\r\n"
- "User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n"
- "Connection: close\r\n"
- "\r\n";
-
- pszKeyword = "Address:";
- }
-
- if (GetMyExternalIP2(addrConnect, pszGet, pszKeyword, ipRet))
- return true;
- }
-
- return false;
-}
-
-
-
-
-
-bool AddAddress(CAddress addr)
-{
- if (!addr.IsRoutable())
- return false;
- if (addr.ip == addrLocalHost.ip)
- return false;
- CRITICAL_BLOCK(cs_mapAddresses)
- {
- map<vector<unsigned char>, CAddress>::iterator it = mapAddresses.find(addr.GetKey());
- if (it == mapAddresses.end())
- {
- // New address
- printf("AddAddress(%s)\n", addr.ToStringLog().c_str());
- mapAddresses.insert(make_pair(addr.GetKey(), addr));
- CAddrDB().WriteAddress(addr);
- return true;
- }
- else
- {
- bool fUpdated = false;
- CAddress& addrFound = (*it).second;
- if ((addrFound.nServices | addr.nServices) != addrFound.nServices)
- {
- // Services have been added
- addrFound.nServices |= addr.nServices;
- fUpdated = true;
- }
- bool fCurrentlyOnline = (GetAdjustedTime() - addr.nTime < 24 * 60 * 60);
- int64 nUpdateInterval = (fCurrentlyOnline ? 60 * 60 : 24 * 60 * 60);
- if (addrFound.nTime < addr.nTime - nUpdateInterval)
- {
- // Periodically update most recently seen time
- addrFound.nTime = addr.nTime;
- fUpdated = true;
- }
- if (fUpdated)
- CAddrDB().WriteAddress(addrFound);
- }
- }
- return false;
-}
-
-void AddressCurrentlyConnected(const CAddress& addr)
-{
- CRITICAL_BLOCK(cs_mapAddresses)
- {
- // Only if it's been published already
- map<vector<unsigned char>, CAddress>::iterator it = mapAddresses.find(addr.GetKey());
- if (it != mapAddresses.end())
- {
- CAddress& addrFound = (*it).second;
- int64 nUpdateInterval = 20 * 60;
- if (addrFound.nTime < GetAdjustedTime() - nUpdateInterval)
- {
- // Periodically update most recently seen time
- addrFound.nTime = GetAdjustedTime();
- CAddrDB addrdb;
- addrdb.WriteAddress(addrFound);
- }
- }
- }
-}
-
-
-
-
-
-void AbandonRequests(void (*fn)(void*, CDataStream&), void* param1)
-{
- // If the dialog might get closed before the reply comes back,
- // call this in the destructor so it doesn't get called after it's deleted.
- CRITICAL_BLOCK(cs_vNodes)
- {
- foreach(CNode* pnode, vNodes)
- {
- CRITICAL_BLOCK(pnode->cs_mapRequests)
- {
- for (map<uint256, CRequestTracker>::iterator mi = pnode->mapRequests.begin(); mi != pnode->mapRequests.end();)
- {
- CRequestTracker& tracker = (*mi).second;
- if (tracker.fn == fn && tracker.param1 == param1)
- pnode->mapRequests.erase(mi++);
- else
- mi++;
- }
- }
- }
- }
-}
-
-
-
-
-
-
-
-//
-// Subscription methods for the broadcast and subscription system.
-// Channel numbers are message numbers, i.e. MSG_TABLE and MSG_PRODUCT.
-//
-// The subscription system uses a meet-in-the-middle strategy.
-// With 100,000 nodes, if senders broadcast to 1000 random nodes and receivers
-// subscribe to 1000 random nodes, 99.995% (1 - 0.99^1000) of messages will get through.
-//
-
-bool AnySubscribed(unsigned int nChannel)
-{
- if (pnodeLocalHost->IsSubscribed(nChannel))
- return true;
- CRITICAL_BLOCK(cs_vNodes)
- foreach(CNode* pnode, vNodes)
- if (pnode->IsSubscribed(nChannel))
- return true;
- return false;
-}
-
-bool CNode::IsSubscribed(unsigned int nChannel)
-{
- if (nChannel >= vfSubscribe.size())
- return false;
- return vfSubscribe[nChannel];
-}
-
-void CNode::Subscribe(unsigned int nChannel, unsigned int nHops)
-{
- if (nChannel >= vfSubscribe.size())
- return;
-
- if (!AnySubscribed(nChannel))
- {
- // Relay subscribe
- CRITICAL_BLOCK(cs_vNodes)
- foreach(CNode* pnode, vNodes)
- if (pnode != this)
- pnode->PushMessage("subscribe", nChannel, nHops);
- }
-
- vfSubscribe[nChannel] = true;
-}
-
-void CNode::CancelSubscribe(unsigned int nChannel)
-{
- if (nChannel >= vfSubscribe.size())
- return;
-
- // Prevent from relaying cancel if wasn't subscribed
- if (!vfSubscribe[nChannel])
- return;
- vfSubscribe[nChannel] = false;
-
- if (!AnySubscribed(nChannel))
- {
- // Relay subscription cancel
- CRITICAL_BLOCK(cs_vNodes)
- foreach(CNode* pnode, vNodes)
- if (pnode != this)
- pnode->PushMessage("sub-cancel", nChannel);
- }
-}
-
-
-
-
-
-
-
-
-
-CNode* FindNode(unsigned int ip)
-{
- CRITICAL_BLOCK(cs_vNodes)
- {
- foreach(CNode* pnode, vNodes)
- if (pnode->addr.ip == ip)
- return (pnode);
- }
- return NULL;
-}
-
-CNode* FindNode(CAddress addr)
-{
- CRITICAL_BLOCK(cs_vNodes)
- {
- foreach(CNode* pnode, vNodes)
- if (pnode->addr == addr)
- return (pnode);
- }
- return NULL;
-}
-
-CNode* ConnectNode(CAddress addrConnect, int64 nTimeout)
-{
- if (addrConnect.ip == addrLocalHost.ip)
- return NULL;
-
- // Look for an existing connection
- CNode* pnode = FindNode(addrConnect.ip);
- if (pnode)
- {
- if (nTimeout != 0)
- pnode->AddRef(nTimeout);
- else
- pnode->AddRef();
- return pnode;
- }
-
- /// debug print
- printf("trying connection %s lastseen=%.1fhrs lasttry=%.1fhrs\n",
- addrConnect.ToStringLog().c_str(),
- (double)(addrConnect.nTime - GetAdjustedTime())/3600.0,
- (double)(addrConnect.nLastTry - GetAdjustedTime())/3600.0);
-
- CRITICAL_BLOCK(cs_mapAddresses)
- mapAddresses[addrConnect.GetKey()].nLastTry = GetAdjustedTime();
-
- // Connect
- SOCKET hSocket;
- if (ConnectSocket(addrConnect, hSocket))
- {
- /// debug print
- printf("connected %s\n", addrConnect.ToStringLog().c_str());
-
- // Set to nonblocking
-#ifdef __WXMSW__
- u_long nOne = 1;
- if (ioctlsocket(hSocket, FIONBIO, &nOne) == SOCKET_ERROR)
- printf("ConnectSocket() : ioctlsocket nonblocking setting failed, error %d\n", WSAGetLastError());
-#else
- if (fcntl(hSocket, F_SETFL, O_NONBLOCK) == SOCKET_ERROR)
- printf("ConnectSocket() : fcntl nonblocking setting failed, error %d\n", errno);
-#endif
-
- // Add node
- CNode* pnode = new CNode(hSocket, addrConnect, false);
- if (nTimeout != 0)
- pnode->AddRef(nTimeout);
- else
- pnode->AddRef();
- CRITICAL_BLOCK(cs_vNodes)
- vNodes.push_back(pnode);
-
- pnode->nTimeConnected = GetTime();
- return pnode;
- }
- else
- {
- return NULL;
- }
-}
-
-void CNode::CloseSocketDisconnect()
-{
- fDisconnect = true;
- if (hSocket != INVALID_SOCKET)
- {
- if (fDebug)
- printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
- printf("disconnecting node %s\n", addr.ToStringLog().c_str());
- closesocket(hSocket);
- hSocket = INVALID_SOCKET;
- }
-}
-
-void CNode::Cleanup()
-{
- // All of a nodes broadcasts and subscriptions are automatically torn down
- // when it goes down, so a node has to stay up to keep its broadcast going.
-
- // Cancel subscriptions
- for (unsigned int nChannel = 0; nChannel < vfSubscribe.size(); nChannel++)
- if (vfSubscribe[nChannel])
- CancelSubscribe(nChannel);
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
-void ThreadSocketHandler(void* parg)
-{
- IMPLEMENT_RANDOMIZE_STACK(ThreadSocketHandler(parg));
- try
- {
- vnThreadsRunning[0]++;
- ThreadSocketHandler2(parg);
- vnThreadsRunning[0]--;
- }
- catch (std::exception& e) {
- vnThreadsRunning[0]--;
- PrintException(&e, "ThreadSocketHandler()");
- } catch (...) {
- vnThreadsRunning[0]--;
- throw; // support pthread_cancel()
- }
- printf("ThreadSocketHandler exiting\n");
-}
-
-void ThreadSocketHandler2(void* parg)
-{
- printf("ThreadSocketHandler started\n");
- list<CNode*> vNodesDisconnected;
- int nPrevNodeCount = 0;
-
- loop
- {
- //
- // Disconnect nodes
- //
- CRITICAL_BLOCK(cs_vNodes)
- {
- // 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 if (mapArgs.count("-maxconnections") && (int)vNodes.size() >= atoi(mapArgs["-maxconnections"]) - MAX_OUTBOUND_CONNECTIONS)
- {
- closesocket(hSocket);
- }
- 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);
- }
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
-unsigned int pnSeed[] =
-{
- // 2010/06
- 0x35218252, 0x9c9c9618, 0xda6bacad, 0xb9aca862, 0x97c235c6,
- 0x146f9562, 0xb67b9e4b, 0x87cf4bc0, 0xb83945d0, 0x984333ad,
- 0xbbeec555, 0x6f0eb440, 0xe0005318, 0x7797e460, 0xddc60fcc,
- 0xb3bbd24a, 0x1ac85746, 0x641846a6, 0x85ee1155, 0xbb2e7a4c,
- 0x9cb8514b, 0xfc342648, 0x62958fae, 0xd0a8c87a, 0xa800795b,
- 0xda8c814e, 0x256a0c80, 0x3f23ec63, 0xd565df43, 0x997d9044,
- 0xaa121448, 0xbed8688e, 0x59d09a5e, 0xb2931243, 0x3730ba18,
- 0xdd3462d0, 0x4e4d1448, 0x171df645, 0x84ee1155,
- 0x248ac445, 0x0e634444, 0x0ded1b63, 0x30c01e60,
- 0xa2b9a094, 0x29e4fd43, 0x9ce61b4c, 0xdae09744,
-
- // 2010/08
- 0x5ae6bf43, 0x460be257, 0x7245c0cf, 0x4e0f028d, 0x26501760, 0x38643255, 0x67094f4f, 0x480449b8,
- 0x16545143, 0x1f082e5a, 0xaa428018, 0xe411e793, 0x14c1f862, 0x2726105b, 0x9b33ea50, 0xeeef86ca,
- 0xe3210d44, 0x0dca8b63, 0x3f9dfb18, 0x860340ad, 0xf33ba17a, 0x9018375c, 0x1de4e353, 0x0fa52dcb,
- 0x89c4555b, 0x109cf37b, 0x28c55b40, 0x04c801ae, 0x275c1e80, 0x6f7f745d, 0x7a2a5653, 0xa28e26d8,
- 0xa4e65db2, 0x99a06580, 0xf253ba44, 0x82cf6ab8, 0x859c2e8e, 0xf71a815d, 0xc18f1454, 0x71c8a943,
- 0x90d24e18, 0x311789b2, 0x74aba645, 0xde0bbfc3, 0xad724fad, 0xbf1ae15e, 0xbaa6fb54, 0x06e4d145,
- 0x51528645, 0x72120cd4, 0xd4cfd145, 0x0a7afed8, 0x9b9a5fad, 0x9e9ff45e, 0x10128355, 0xd44e8646,
- 0x04a07b47, 0x5fc9d547, 0xe0491e45, 0xbac21b41, 0x7aa31bae, 0x10483c5f, 0x94a23055, 0x73d9dc47,
- 0x1a99c247, 0x822fe847, 0x7e57ba48, 0xb19ea843, 0xa60621b2, 0x778cf163, 0x125c6556, 0xf94ba44f,
- 0xa61a0948, 0x6c839e4b, 0x29af5348, 0x68d84845, 0x752b95c3, 0xcf0d4663, 0x08e11e56, 0x75109550,
- 0x5f24b94c, 0x42426d4d, 0xfbbc0a4c, 0x70a9a246, 0xda7837cb, 0xae2a986d, 0xe283c358, 0x0c7ca954,
- 0x8e9bde59, 0x61521760, 0x6884444c, 0xa194e548, 0x9b8809cc, 0x16e96a8f, 0x956ff859, 0xfad5e555,
- 0x0ea70c80, 0x5b4ce26d, 0x7984444c, 0x1080d24a, 0x22a686cf, 0x6bf8c2ad, 0xb0f7485f, 0x06b66e56,
- 0x668373bc, 0x75506279, 0x3868694e, 0x12a5954b, 0x3a8b62d1, 0xb74fcbad, 0xa7dc3360, 0xc070b359,
- 0xa2b87242, 0xc45cab7c, 0x69882050, 0x14a5464b, 0x386acad5, 0x80b85db2, 0x1f78a062, 0xc608c55b,
- 0x4257d543, 0x7636ad80, 0x4432d655, 0xb2114d4b, 0x32639bd9, 0xadd75db2, 0x9be5a362, 0x6831bc5e,
- 0xf7f77046, 0x8f35ba81, 0x09bb4e59, 0xd0fb6b4e, 0xc5daa445, 0x9c611618, 0x355dcc62, 0xf2cf435e,
- 0x31e72c46, 0xdd8a43ad, 0x171f9c5b, 0xb4c2e355, 0xbe8af945, 0x613d3942, 0xe6f9e863, 0x7a3d855f,
- 0xa66adc47, 0x261089b2, 0x5a27105b, 0x6c28105b, 0xdd247946, 0xe6c3a445, 0x43a1ec63, 0x99b4dd5f,
- 0xb6834347, 0x5e9649bc, 0xf9dd545d, 0x6ae4c15b, 0xa5318a47, 0x7984ec47, 0x93a73b63, 0x0c60195f,
- 0xa5c85e4b, 0xa0a36dc2, 0x0739a95e, 0x3d44c15b, 0xfb940f4b, 0xd67c9148, 0x614f9876, 0x0a241c5f,
- 0xad9da74c, 0x4459abc8, 0x12e71b5f, 0x1c534a5d, 0x8ff5fc50, 0x2ca8864b, 0xd894fd80, 0x82ab3160,
- 0x390d804e, 0x2cf310cc, 0x680dad80, 0x691be15e, 0x5a8f4652, 0xaad0784d, 0x0d2431ad,
-};
-
-
-
-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
- int64 nStart = GetTime();
- loop
- {
- // Limit outbound connections
- vnThreadsRunning[1]--;
- Sleep(500);
- loop
- {
- int nOutbound = 0;
- CRITICAL_BLOCK(cs_vNodes)
- foreach(CNode* pnode, vNodes)
- if (!pnode->fInbound)
- nOutbound++;
- int nMaxOutboundConnections = MAX_OUTBOUND_CONNECTIONS;
- if (mapArgs.count("-maxconnections"))
- nMaxOutboundConnections = min(nMaxOutboundConnections, atoi(mapArgs["-maxconnections"]));
- if (nOutbound < nMaxOutboundConnections)
- break;
- Sleep(2000);
- if (fShutdown)
- return;
- }
- vnThreadsRunning[1]++;
- if (fShutdown)
- return;
-
- CRITICAL_BLOCK(cs_mapAddresses)
- {
- // Add seed nodes if IRC isn't working
- static bool fSeedUsed;
- bool fTOR = (fUseProxy && addrProxy.port == htons(9050));
- if (mapAddresses.empty() && (GetTime() - nStart > 60 || fTOR))
- {
- for (int i = 0; i < ARRAYLEN(pnSeed); i++)
- {
- // It'll only connect to one or two seed nodes because once it connects,
- // it'll get a pile of addresses with newer timestamps.
- CAddress addr;
- addr.ip = pnSeed[i];
- addr.nTime = 0;
- AddAddress(addr);
- }
- fSeedUsed = true;
- }
-
- if (fSeedUsed && mapAddresses.size() > ARRAYLEN(pnSeed) + 100)
- {
- // Disconnect seed nodes
- set<unsigned int> setSeed(pnSeed, pnSeed + ARRAYLEN(pnSeed));
- static int64 nSeedDisconnected;
- if (nSeedDisconnected == 0)
- {
- nSeedDisconnected = GetTime();
- CRITICAL_BLOCK(cs_vNodes)
- foreach(CNode* pnode, vNodes)
- if (setSeed.count(pnode->addr.ip))
- pnode->fDisconnect = true;
- }
-
- // Keep setting timestamps to 0 so they won't reconnect
- if (GetTime() - nSeedDisconnected < 60 * 60)
- {
- foreach(PAIRTYPE(const vector<unsigned char>, CAddress)& item, mapAddresses)
- {
- if (setSeed.count(item.second.ip))
- {
- item.second.nTime = 0;
- CAddrDB().WriteAddress(item.second);
- }
- }
- }
- }
- }
-
-
- //
- // Choose an address to connect to based on most recently seen
- //
- CAddress addrConnect;
- int64 nBest = INT64_MIN;
-
- // Only connect to one address per a.b.?.? range.
- // 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 & 0x0000ffff);
-
- 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 & 0x0000ffff))
- 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)(nStart * 4951 + addr.nLastTry * 9567851 + addr.ip * 7789) % (2 * 60 * 60);
- if (addr.port != DEFAULT_PORT)
- nRandomizer += 2 * 60 * 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() >= 8 && 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> vAddr;
- vAddr.push_back(addrLocalHost);
- pnode->PushMessage("addr", vAddr);
- }
-
- // 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)
- {
- vector<CNode*> vNodesCopy;
- CRITICAL_BLOCK(cs_vNodes)
- {
- vNodesCopy = vNodes;
- foreach(CNode* pnode, vNodesCopy)
- pnode->AddRef();
- }
-
- // Poll the connected nodes for messages
- CNode* pnodeTrickle = NULL;
- if (!vNodesCopy.empty())
- pnodeTrickle = vNodesCopy[GetRand(vNodesCopy.size())];
- 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, pnode == pnodeTrickle);
- 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;
- }
-
-#ifdef BSD
- // 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;
+// Copyright (c) 2009-2010 Satoshi Nakamoto +// Distributed under the MIT/X11 software license, see the accompanying +// file license.txt or http://www.opensource.org/licenses/mit-license.php. + +#include "headers.h" + +static const int MAX_OUTBOUND_CONNECTIONS = 8; + +void ThreadMessageHandler2(void* parg); +void ThreadSocketHandler2(void* parg); +void ThreadOpenConnections2(void* parg); +bool OpenNetworkConnection(const CAddress& addrConnect); + + + + + +// +// Global state variables +// +bool fClient = false; +uint64 nLocalServices = (fClient ? 0 : NODE_NETWORK); +CAddress addrLocalHost(0, DEFAULT_PORT, nLocalServices); +CNode* pnodeLocalHost = NULL; +uint64 nLocalHostNonce = 0; +array<int, 10> vnThreadsRunning; +SOCKET hListenSocket = INVALID_SOCKET; +int64 nThreadSocketHandlerHeartbeat = INT64_MAX; + +vector<CNode*> vNodes; +CCriticalSection cs_vNodes; +map<vector<unsigned char>, CAddress> mapAddresses; +CCriticalSection cs_mapAddresses; +map<CInv, CDataStream> mapRelay; +deque<pair<int64, CInv> > vRelayExpiration; +CCriticalSection cs_mapRelay; +map<CInv, int64> mapAlreadyAskedFor; + +// Settings +int fUseProxy = false; +CAddress addrProxy("127.0.0.1:9050"); + + + + + +void CNode::PushGetBlocks(CBlockIndex* pindexBegin, uint256 hashEnd) +{ + // Filter out duplicate requests + if (pindexBegin == pindexLastGetBlocksBegin && hashEnd == hashLastGetBlocksEnd) + return; + pindexLastGetBlocksBegin = pindexBegin; + hashLastGetBlocksEnd = hashEnd; + + PushMessage("getblocks", CBlockLocator(pindexBegin), hashEnd); +} + + + + + +bool ConnectSocket(const CAddress& addrConnect, SOCKET& hSocketRet) +{ + hSocketRet = INVALID_SOCKET; + + SOCKET hSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); + if (hSocket == INVALID_SOCKET) + return false; +#ifdef BSD + int set = 1; + setsockopt(hSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(int)); +#endif + + bool fRoutable = !(addrConnect.GetByte(3) == 10 || (addrConnect.GetByte(3) == 192 && addrConnect.GetByte(2) == 168)); + bool fProxy = (fUseProxy && fRoutable); + struct sockaddr_in sockaddr = (fProxy ? addrProxy.GetSockAddr() : addrConnect.GetSockAddr()); + + if (connect(hSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR) + { + closesocket(hSocket); + return false; + } + + if (fProxy) + { + printf("proxy connecting %s\n", addrConnect.ToStringLog().c_str()); + char pszSocks4IP[] = "\4\1\0\0\0\0\0\0user"; + memcpy(pszSocks4IP + 2, &addrConnect.port, 2); + memcpy(pszSocks4IP + 4, &addrConnect.ip, 4); + char* pszSocks4 = pszSocks4IP; + int nSize = sizeof(pszSocks4IP); + + int ret = send(hSocket, pszSocks4, nSize, MSG_NOSIGNAL); + if (ret != nSize) + { + closesocket(hSocket); + return error("Error sending to proxy"); + } + char pchRet[8]; + if (recv(hSocket, pchRet, 8, 0) != 8) + { + closesocket(hSocket); + return error("Error reading proxy response"); + } + if (pchRet[1] != 0x5a) + { + closesocket(hSocket); + if (pchRet[1] != 0x5b) + printf("ERROR: Proxy returned error %d\n", pchRet[1]); + return false; + } + printf("proxy connected %s\n", addrConnect.ToStringLog().c_str()); + } + + hSocketRet = hSocket; + return true; +} + + + +bool GetMyExternalIP2(const CAddress& addrConnect, const char* pszGet, const char* pszKeyword, unsigned int& ipRet) +{ + SOCKET hSocket; + if (!ConnectSocket(addrConnect, hSocket)) + return error("GetMyExternalIP() : connection to %s failed", addrConnect.ToString().c_str()); + + send(hSocket, pszGet, strlen(pszGet), MSG_NOSIGNAL); + + string strLine; + while (RecvLine(hSocket, strLine)) + { + if (strLine.empty()) + { + loop + { + if (!RecvLine(hSocket, strLine)) + { + closesocket(hSocket); + return false; + } + if (strLine.find(pszKeyword) != -1) + { + strLine = strLine.substr(strLine.find(pszKeyword) + strlen(pszKeyword)); + break; + } + } + closesocket(hSocket); + if (strLine.find("<")) + strLine = strLine.substr(0, strLine.find("<")); + strLine = strLine.substr(strspn(strLine.c_str(), " \t\n\r")); + while (strLine.size() > 0 && isspace(strLine[strLine.size()-1])) + strLine.resize(strLine.size()-1); + CAddress addr(strLine.c_str()); + printf("GetMyExternalIP() received [%s] %s\n", strLine.c_str(), addr.ToString().c_str()); + if (addr.ip == 0 || addr.ip == INADDR_NONE || !addr.IsRoutable()) + return false; + ipRet = addr.ip; + return true; + } + } + closesocket(hSocket); + return error("GetMyExternalIP() : connection closed"); +} + + +bool GetMyExternalIP(unsigned int& ipRet) +{ + CAddress addrConnect; + const char* pszGet; + const char* pszKeyword; + + if (fUseProxy) + return false; + + for (int nLookup = 0; nLookup <= 1; nLookup++) + for (int nHost = 1; nHost <= 2; nHost++) + { + if (nHost == 1) + { + addrConnect = CAddress("70.86.96.218:80"); // www.ipaddressworld.com + + if (nLookup == 1) + { + struct hostent* phostent = gethostbyname("www.ipaddressworld.com"); + if (phostent && phostent->h_addr_list && phostent->h_addr_list[0]) + addrConnect = CAddress(*(u_long*)phostent->h_addr_list[0], htons(80)); + } + + pszGet = "GET /ip.php HTTP/1.1\r\n" + "Host: www.ipaddressworld.com\r\n" + "User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n" + "Connection: close\r\n" + "\r\n"; + + pszKeyword = "IP:"; + } + else if (nHost == 2) + { + addrConnect = CAddress("208.78.68.70:80"); // checkip.dyndns.org + + if (nLookup == 1) + { + struct hostent* phostent = gethostbyname("checkip.dyndns.org"); + if (phostent && phostent->h_addr_list && phostent->h_addr_list[0]) + addrConnect = CAddress(*(u_long*)phostent->h_addr_list[0], htons(80)); + } + + pszGet = "GET / HTTP/1.1\r\n" + "Host: checkip.dyndns.org\r\n" + "User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n" + "Connection: close\r\n" + "\r\n"; + + pszKeyword = "Address:"; + } + + if (GetMyExternalIP2(addrConnect, pszGet, pszKeyword, ipRet)) + return true; + } + + return false; +} + + + + + +bool AddAddress(CAddress addr) +{ + if (!addr.IsRoutable()) + return false; + if (addr.ip == addrLocalHost.ip) + return false; + CRITICAL_BLOCK(cs_mapAddresses) + { + map<vector<unsigned char>, CAddress>::iterator it = mapAddresses.find(addr.GetKey()); + if (it == mapAddresses.end()) + { + // New address + printf("AddAddress(%s)\n", addr.ToStringLog().c_str()); + mapAddresses.insert(make_pair(addr.GetKey(), addr)); + CAddrDB().WriteAddress(addr); + return true; + } + else + { + bool fUpdated = false; + CAddress& addrFound = (*it).second; + if ((addrFound.nServices | addr.nServices) != addrFound.nServices) + { + // Services have been added + addrFound.nServices |= addr.nServices; + fUpdated = true; + } + bool fCurrentlyOnline = (GetAdjustedTime() - addr.nTime < 24 * 60 * 60); + int64 nUpdateInterval = (fCurrentlyOnline ? 60 * 60 : 24 * 60 * 60); + if (addrFound.nTime < addr.nTime - nUpdateInterval) + { + // Periodically update most recently seen time + addrFound.nTime = addr.nTime; + fUpdated = true; + } + if (fUpdated) + CAddrDB().WriteAddress(addrFound); + } + } + return false; +} + +void AddressCurrentlyConnected(const CAddress& addr) +{ + CRITICAL_BLOCK(cs_mapAddresses) + { + // Only if it's been published already + map<vector<unsigned char>, CAddress>::iterator it = mapAddresses.find(addr.GetKey()); + if (it != mapAddresses.end()) + { + CAddress& addrFound = (*it).second; + int64 nUpdateInterval = 20 * 60; + if (addrFound.nTime < GetAdjustedTime() - nUpdateInterval) + { + // Periodically update most recently seen time + addrFound.nTime = GetAdjustedTime(); + CAddrDB addrdb; + addrdb.WriteAddress(addrFound); + } + } + } +} + + + + + +void AbandonRequests(void (*fn)(void*, CDataStream&), void* param1) +{ + // If the dialog might get closed before the reply comes back, + // call this in the destructor so it doesn't get called after it's deleted. + CRITICAL_BLOCK(cs_vNodes) + { + foreach(CNode* pnode, vNodes) + { + CRITICAL_BLOCK(pnode->cs_mapRequests) + { + for (map<uint256, CRequestTracker>::iterator mi = pnode->mapRequests.begin(); mi != pnode->mapRequests.end();) + { + CRequestTracker& tracker = (*mi).second; + if (tracker.fn == fn && tracker.param1 == param1) + pnode->mapRequests.erase(mi++); + else + mi++; + } + } + } + } +} + + + + + + + +// +// Subscription methods for the broadcast and subscription system. +// Channel numbers are message numbers, i.e. MSG_TABLE and MSG_PRODUCT. +// +// The subscription system uses a meet-in-the-middle strategy. +// With 100,000 nodes, if senders broadcast to 1000 random nodes and receivers +// subscribe to 1000 random nodes, 99.995% (1 - 0.99^1000) of messages will get through. +// + +bool AnySubscribed(unsigned int nChannel) +{ + if (pnodeLocalHost->IsSubscribed(nChannel)) + return true; + CRITICAL_BLOCK(cs_vNodes) + foreach(CNode* pnode, vNodes) + if (pnode->IsSubscribed(nChannel)) + return true; + return false; +} + +bool CNode::IsSubscribed(unsigned int nChannel) +{ + if (nChannel >= vfSubscribe.size()) + return false; + return vfSubscribe[nChannel]; +} + +void CNode::Subscribe(unsigned int nChannel, unsigned int nHops) +{ + if (nChannel >= vfSubscribe.size()) + return; + + if (!AnySubscribed(nChannel)) + { + // Relay subscribe + CRITICAL_BLOCK(cs_vNodes) + foreach(CNode* pnode, vNodes) + if (pnode != this) + pnode->PushMessage("subscribe", nChannel, nHops); + } + + vfSubscribe[nChannel] = true; +} + +void CNode::CancelSubscribe(unsigned int nChannel) +{ + if (nChannel >= vfSubscribe.size()) + return; + + // Prevent from relaying cancel if wasn't subscribed + if (!vfSubscribe[nChannel]) + return; + vfSubscribe[nChannel] = false; + + if (!AnySubscribed(nChannel)) + { + // Relay subscription cancel + CRITICAL_BLOCK(cs_vNodes) + foreach(CNode* pnode, vNodes) + if (pnode != this) + pnode->PushMessage("sub-cancel", nChannel); + } +} + + + + + + + + + +CNode* FindNode(unsigned int ip) +{ + CRITICAL_BLOCK(cs_vNodes) + { + foreach(CNode* pnode, vNodes) + if (pnode->addr.ip == ip) + return (pnode); + } + return NULL; +} + +CNode* FindNode(CAddress addr) +{ + CRITICAL_BLOCK(cs_vNodes) + { + foreach(CNode* pnode, vNodes) + if (pnode->addr == addr) + return (pnode); + } + return NULL; +} + +CNode* ConnectNode(CAddress addrConnect, int64 nTimeout) +{ + if (addrConnect.ip == addrLocalHost.ip) + return NULL; + + // Look for an existing connection + CNode* pnode = FindNode(addrConnect.ip); + if (pnode) + { + if (nTimeout != 0) + pnode->AddRef(nTimeout); + else + pnode->AddRef(); + return pnode; + } + + /// debug print + printf("trying connection %s lastseen=%.1fhrs lasttry=%.1fhrs\n", + addrConnect.ToStringLog().c_str(), + (double)(addrConnect.nTime - GetAdjustedTime())/3600.0, + (double)(addrConnect.nLastTry - GetAdjustedTime())/3600.0); + + CRITICAL_BLOCK(cs_mapAddresses) + mapAddresses[addrConnect.GetKey()].nLastTry = GetAdjustedTime(); + + // Connect + SOCKET hSocket; + if (ConnectSocket(addrConnect, hSocket)) + { + /// debug print + printf("connected %s\n", addrConnect.ToStringLog().c_str()); + + // Set to nonblocking +#ifdef __WXMSW__ + u_long nOne = 1; + if (ioctlsocket(hSocket, FIONBIO, &nOne) == SOCKET_ERROR) + printf("ConnectSocket() : ioctlsocket nonblocking setting failed, error %d\n", WSAGetLastError()); +#else + if (fcntl(hSocket, F_SETFL, O_NONBLOCK) == SOCKET_ERROR) + printf("ConnectSocket() : fcntl nonblocking setting failed, error %d\n", errno); +#endif + + // Add node + CNode* pnode = new CNode(hSocket, addrConnect, false); + if (nTimeout != 0) + pnode->AddRef(nTimeout); + else + pnode->AddRef(); + CRITICAL_BLOCK(cs_vNodes) + vNodes.push_back(pnode); + + pnode->nTimeConnected = GetTime(); + return pnode; + } + else + { + return NULL; + } +} + +void CNode::CloseSocketDisconnect() +{ + fDisconnect = true; + if (hSocket != INVALID_SOCKET) + { + if (fDebug) + printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str()); + printf("disconnecting node %s\n", addr.ToStringLog().c_str()); + closesocket(hSocket); + hSocket = INVALID_SOCKET; + } +} + +void CNode::Cleanup() +{ + // All of a nodes broadcasts and subscriptions are automatically torn down + // when it goes down, so a node has to stay up to keep its broadcast going. + + // Cancel subscriptions + for (unsigned int nChannel = 0; nChannel < vfSubscribe.size(); nChannel++) + if (vfSubscribe[nChannel]) + CancelSubscribe(nChannel); +} + + + + + + + + + + + + + +void ThreadSocketHandler(void* parg) +{ + IMPLEMENT_RANDOMIZE_STACK(ThreadSocketHandler(parg)); + try + { + vnThreadsRunning[0]++; + ThreadSocketHandler2(parg); + vnThreadsRunning[0]--; + } + catch (std::exception& e) { + vnThreadsRunning[0]--; + PrintException(&e, "ThreadSocketHandler()"); + } catch (...) { + vnThreadsRunning[0]--; + throw; // support pthread_cancel() + } + printf("ThreadSocketHandler exiting\n"); +} + +void ThreadSocketHandler2(void* parg) +{ + printf("ThreadSocketHandler started\n"); + list<CNode*> vNodesDisconnected; + int nPrevNodeCount = 0; + + loop + { + // + // Disconnect nodes + // + CRITICAL_BLOCK(cs_vNodes) + { + // 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 if (mapArgs.count("-maxconnections") && (int)vNodes.size() >= atoi(mapArgs["-maxconnections"]) - MAX_OUTBOUND_CONNECTIONS) + { + closesocket(hSocket); + } + 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); + } +} + + + + + + + + + + + + + +unsigned int pnSeed[] = +{ + // 2010/06 + 0x35218252, 0x9c9c9618, 0xda6bacad, 0xb9aca862, 0x97c235c6, + 0x146f9562, 0xb67b9e4b, 0x87cf4bc0, 0xb83945d0, 0x984333ad, + 0xbbeec555, 0x6f0eb440, 0xe0005318, 0x7797e460, 0xddc60fcc, + 0xb3bbd24a, 0x1ac85746, 0x641846a6, 0x85ee1155, 0xbb2e7a4c, + 0x9cb8514b, 0xfc342648, 0x62958fae, 0xd0a8c87a, 0xa800795b, + 0xda8c814e, 0x256a0c80, 0x3f23ec63, 0xd565df43, 0x997d9044, + 0xaa121448, 0xbed8688e, 0x59d09a5e, 0xb2931243, 0x3730ba18, + 0xdd3462d0, 0x4e4d1448, 0x171df645, 0x84ee1155, + 0x248ac445, 0x0e634444, 0x0ded1b63, 0x30c01e60, + 0xa2b9a094, 0x29e4fd43, 0x9ce61b4c, 0xdae09744, + + // 2010/08 + 0x5ae6bf43, 0x460be257, 0x7245c0cf, 0x4e0f028d, 0x26501760, 0x38643255, 0x67094f4f, 0x480449b8, + 0x16545143, 0x1f082e5a, 0xaa428018, 0xe411e793, 0x14c1f862, 0x2726105b, 0x9b33ea50, 0xeeef86ca, + 0xe3210d44, 0x0dca8b63, 0x3f9dfb18, 0x860340ad, 0xf33ba17a, 0x9018375c, 0x1de4e353, 0x0fa52dcb, + 0x89c4555b, 0x109cf37b, 0x28c55b40, 0x04c801ae, 0x275c1e80, 0x6f7f745d, 0x7a2a5653, 0xa28e26d8, + 0xa4e65db2, 0x99a06580, 0xf253ba44, 0x82cf6ab8, 0x859c2e8e, 0xf71a815d, 0xc18f1454, 0x71c8a943, + 0x90d24e18, 0x311789b2, 0x74aba645, 0xde0bbfc3, 0xad724fad, 0xbf1ae15e, 0xbaa6fb54, 0x06e4d145, + 0x51528645, 0x72120cd4, 0xd4cfd145, 0x0a7afed8, 0x9b9a5fad, 0x9e9ff45e, 0x10128355, 0xd44e8646, + 0x04a07b47, 0x5fc9d547, 0xe0491e45, 0xbac21b41, 0x7aa31bae, 0x10483c5f, 0x94a23055, 0x73d9dc47, + 0x1a99c247, 0x822fe847, 0x7e57ba48, 0xb19ea843, 0xa60621b2, 0x778cf163, 0x125c6556, 0xf94ba44f, + 0xa61a0948, 0x6c839e4b, 0x29af5348, 0x68d84845, 0x752b95c3, 0xcf0d4663, 0x08e11e56, 0x75109550, + 0x5f24b94c, 0x42426d4d, 0xfbbc0a4c, 0x70a9a246, 0xda7837cb, 0xae2a986d, 0xe283c358, 0x0c7ca954, + 0x8e9bde59, 0x61521760, 0x6884444c, 0xa194e548, 0x9b8809cc, 0x16e96a8f, 0x956ff859, 0xfad5e555, + 0x0ea70c80, 0x5b4ce26d, 0x7984444c, 0x1080d24a, 0x22a686cf, 0x6bf8c2ad, 0xb0f7485f, 0x06b66e56, + 0x668373bc, 0x75506279, 0x3868694e, 0x12a5954b, 0x3a8b62d1, 0xb74fcbad, 0xa7dc3360, 0xc070b359, + 0xa2b87242, 0xc45cab7c, 0x69882050, 0x14a5464b, 0x386acad5, 0x80b85db2, 0x1f78a062, 0xc608c55b, + 0x4257d543, 0x7636ad80, 0x4432d655, 0xb2114d4b, 0x32639bd9, 0xadd75db2, 0x9be5a362, 0x6831bc5e, + 0xf7f77046, 0x8f35ba81, 0x09bb4e59, 0xd0fb6b4e, 0xc5daa445, 0x9c611618, 0x355dcc62, 0xf2cf435e, + 0x31e72c46, 0xdd8a43ad, 0x171f9c5b, 0xb4c2e355, 0xbe8af945, 0x613d3942, 0xe6f9e863, 0x7a3d855f, + 0xa66adc47, 0x261089b2, 0x5a27105b, 0x6c28105b, 0xdd247946, 0xe6c3a445, 0x43a1ec63, 0x99b4dd5f, + 0xb6834347, 0x5e9649bc, 0xf9dd545d, 0x6ae4c15b, 0xa5318a47, 0x7984ec47, 0x93a73b63, 0x0c60195f, + 0xa5c85e4b, 0xa0a36dc2, 0x0739a95e, 0x3d44c15b, 0xfb940f4b, 0xd67c9148, 0x614f9876, 0x0a241c5f, + 0xad9da74c, 0x4459abc8, 0x12e71b5f, 0x1c534a5d, 0x8ff5fc50, 0x2ca8864b, 0xd894fd80, 0x82ab3160, + 0x390d804e, 0x2cf310cc, 0x680dad80, 0x691be15e, 0x5a8f4652, 0xaad0784d, 0x0d2431ad, +}; + + + +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 + int64 nStart = GetTime(); + loop + { + // Limit outbound connections + vnThreadsRunning[1]--; + Sleep(500); + loop + { + int nOutbound = 0; + CRITICAL_BLOCK(cs_vNodes) + foreach(CNode* pnode, vNodes) + if (!pnode->fInbound) + nOutbound++; + int nMaxOutboundConnections = MAX_OUTBOUND_CONNECTIONS; + if (mapArgs.count("-maxconnections")) + nMaxOutboundConnections = min(nMaxOutboundConnections, atoi(mapArgs["-maxconnections"])); + if (nOutbound < nMaxOutboundConnections) + break; + Sleep(2000); + if (fShutdown) + return; + } + vnThreadsRunning[1]++; + if (fShutdown) + return; + + CRITICAL_BLOCK(cs_mapAddresses) + { + // Add seed nodes if IRC isn't working + static bool fSeedUsed; + bool fTOR = (fUseProxy && addrProxy.port == htons(9050)); + if (mapAddresses.empty() && (GetTime() - nStart > 60 || fTOR)) + { + for (int i = 0; i < ARRAYLEN(pnSeed); i++) + { + // It'll only connect to one or two seed nodes because once it connects, + // it'll get a pile of addresses with newer timestamps. + CAddress addr; + addr.ip = pnSeed[i]; + addr.nTime = 0; + AddAddress(addr); + } + fSeedUsed = true; + } + + if (fSeedUsed && mapAddresses.size() > ARRAYLEN(pnSeed) + 100) + { + // Disconnect seed nodes + set<unsigned int> setSeed(pnSeed, pnSeed + ARRAYLEN(pnSeed)); + static int64 nSeedDisconnected; + if (nSeedDisconnected == 0) + { + nSeedDisconnected = GetTime(); + CRITICAL_BLOCK(cs_vNodes) + foreach(CNode* pnode, vNodes) + if (setSeed.count(pnode->addr.ip)) + pnode->fDisconnect = true; + } + + // Keep setting timestamps to 0 so they won't reconnect + if (GetTime() - nSeedDisconnected < 60 * 60) + { + foreach(PAIRTYPE(const vector<unsigned char>, CAddress)& item, mapAddresses) + { + if (setSeed.count(item.second.ip)) + { + item.second.nTime = 0; + CAddrDB().WriteAddress(item.second); + } + } + } + } + } + + + // + // Choose an address to connect to based on most recently seen + // + CAddress addrConnect; + int64 nBest = INT64_MIN; + + // Only connect to one address per a.b.?.? range. + // 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 & 0x0000ffff); + + 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 & 0x0000ffff)) + 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)(nStart * 4951 + addr.nLastTry * 9567851 + addr.ip * 7789) % (2 * 60 * 60); + if (addr.port != DEFAULT_PORT) + nRandomizer += 2 * 60 * 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() >= 8 && 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> vAddr; + vAddr.push_back(addrLocalHost); + pnode->PushMessage("addr", vAddr); + } + + // 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) + { + vector<CNode*> vNodesCopy; + CRITICAL_BLOCK(cs_vNodes) + { + vNodesCopy = vNodes; + foreach(CNode* pnode, vNodesCopy) + pnode->AddRef(); + } + + // Poll the connected nodes for messages + CNode* pnodeTrickle = NULL; + if (!vNodesCopy.empty()) + pnodeTrickle = vNodesCopy[GetRand(vNodesCopy.size())]; + 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, pnode == pnodeTrickle); + 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; + } + +#ifdef BSD + // 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; |