Files
triangles_v5/src/net.cpp
T
sami7777 2fba88bfc5 Fix LookupHost call to use vector overload in HTTP seed fetch
LookupHost expects std::vector<CNetAddr>& but was passed a single
CNetAddr, breaking compilation on all platforms.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-04-01 18:52:06 -07:00

2354 lines
66 KiB
C++

// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2012 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "irc.h"
#include "db.h"
#include "net.h"
#include "main.h"
#include "init.h"
#include "strlcpy.h"
#include "addrman.h"
#include "ui_interface.h"
#include "onionseed.h"
#include <boost/asio.hpp>
#include <sstream>
#ifdef WIN32
#include <string.h>
#endif
#ifdef USE_UPNP
#include <miniupnpc/miniwget.h>
#include <miniupnpc/miniupnpc.h>
#include <miniupnpc/upnpcommands.h>
#include <miniupnpc/upnperrors.h>
#endif
using namespace std;
using namespace boost;
extern "C" {
// Old embedded Tor v2 removed - using external Tor via SOCKS5 for v3
// int tor_main(int argc, char *argv[]);
}
static const int MAX_OUTBOUND_CONNECTIONS = 16;
void ThreadMessageHandler2(void* parg);
void ThreadSocketHandler2(void* parg);
void ThreadOpenConnections2(void* parg);
void ThreadOpenAddedConnections2(void* parg);
#ifdef USE_UPNP
void ThreadMapPort2(void* parg);
#endif
void ThreadHTTPSeedFetch(void* parg);
void ThreadHTTPSeedFetch2(void* parg);
bool OpenNetworkConnection(const CAddress& addrConnect, CSemaphoreGrant *grantOutbound = NULL, const char *strDest = NULL, bool fOneShot = false);
struct LocalServiceInfo {
int nScore;
int nPort;
};
//
// Global state variables
//
bool fClient = false;
//bool fDiscover = true;
bool fUseUPnP = GetBoolArg("-upnp", USE_UPNP);
//bool fUseUPnP = false;
uint64_t nLocalServices = (fClient ? 0 : NODE_NETWORK);
static CCriticalSection cs_mapLocalHost;
static map<CNetAddr, LocalServiceInfo> mapLocalHost;
static bool vfReachable[NET_MAX] = {};
static bool vfLimited[NET_MAX] = {};
static CNode* pnodeLocalHost = NULL;
CAddress addrSeenByPeer(CService("0.0.0.0", 0), nLocalServices);
uint64_t nLocalHostNonce = 0;
boost::array<int, THREAD_MAX> vnThreadsRunning;
static std::vector<SOCKET> vhListenSocket;
CAddrMan addrman;
vector<CNode*> vNodes;
CCriticalSection cs_vNodes;
map<CInv, CDataStream> mapRelay;
deque<pair<int64_t, CInv> > vRelayExpiration;
CCriticalSection cs_mapRelay;
map<CInv, int64_t> mapAlreadyAskedFor;
static deque<string> vOneShots;
CCriticalSection cs_vOneShots;
set<CNetAddr> setservAddNodeAddresses;
CCriticalSection cs_setservAddNodeAddresses;
static CSemaphore *semOutbound = NULL;
void AddOneShot(string strDest)
{
LOCK(cs_vOneShots);
vOneShots.push_back(strDest);
}
unsigned short GetListenPort()
{
return (unsigned short)(GetArg("-port", GetDefaultPort()));
}
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);
}
void CNode::PushGetHeaders(CBlockIndex* pindexBegin, uint256 hashEnd)
{
if (pindexBegin == pindexLastGetHeadersBegin && hashEnd == hashLastGetHeadersEnd)
return;
pindexLastGetHeadersBegin = pindexBegin;
hashLastGetHeadersEnd = hashEnd;
PushMessage("getheaders", CBlockLocator(pindexBegin), hashEnd);
}
// find 'best' local address for a particular peer
bool GetLocal(CService& addr, const CNetAddr *paddrPeer)
{
if (fNoListen)
return false;
int nBestScore = -1;
int nBestReachability = -1;
{
LOCK(cs_mapLocalHost);
for (map<CNetAddr, LocalServiceInfo>::iterator it = mapLocalHost.begin(); it != mapLocalHost.end(); it++)
{
int nScore = (*it).second.nScore;
int nReachability = (*it).first.GetReachabilityFrom(paddrPeer);
if (nReachability > nBestReachability || (nReachability == nBestReachability && nScore > nBestScore))
{
addr = CService((*it).first, (*it).second.nPort);
nBestReachability = nReachability;
nBestScore = nScore;
}
}
}
return nBestScore >= 0;
}
// get best local address for a particular peer as a CAddress
CAddress GetLocalAddress(const CNetAddr *paddrPeer)
{
CAddress ret(CService("0.0.0.0",0),0);
CService addr;
if (GetLocal(addr, paddrPeer))
{
ret = CAddress(addr);
ret.nServices = nLocalServices;
ret.nTime = GetAdjustedTime();
}
return ret;
}
bool RecvLine(SOCKET hSocket, string& strLine)
{
strLine = "";
while (true)
{
char c;
int nBytes = recv(hSocket, &c, 1, 0);
if (nBytes > 0)
{
if (c == '\n')
continue;
if (c == '\r')
return true;
strLine += c;
if (strLine.size() >= 9000)
return true;
}
else if (nBytes <= 0)
{
if (fShutdown)
return false;
if (nBytes < 0)
{
int nErr = WSAGetLastError();
if (nErr == WSAEMSGSIZE)
continue;
if (nErr == WSAEWOULDBLOCK || nErr == WSAEINTR || nErr == WSAEINPROGRESS)
{
MilliSleep(10);
continue;
}
}
if (!strLine.empty())
return true;
if (nBytes == 0)
{
// socket closed
printf("socket closed\n");
return false;
}
else
{
// socket error
int nErr = WSAGetLastError();
printf("recv failed: %d\n", nErr);
return false;
}
}
}
}
// used when scores of local addresses may have changed
// pushes better local address to peers
void static AdvertizeLocal()
{
LOCK(cs_vNodes);
for (CNode* pnode : vNodes)
{
if (pnode->fSuccessfullyConnected)
{
CAddress addrLocal = GetLocalAddress(&pnode->addr);
if (addrLocal.IsRoutable() && (CService)addrLocal != (CService)pnode->addrLocal)
{
pnode->PushAddress(addrLocal);
pnode->addrLocal = addrLocal;
}
}
}
}
void SetReachable(enum Network net, bool fFlag)
{
LOCK(cs_mapLocalHost);
vfReachable[net] = fFlag;
if (net == NET_IPV6 && fFlag)
vfReachable[NET_IPV4] = true;
}
// learn a new local address
bool AddLocal(const CService& addr, int nScore)
{
if (!addr.IsRoutable())
return false;
if (nScore < LOCAL_MANUAL)
return false;
if (IsLimited(addr))
return false;
printf("AddLocal(%s,%i)\n", addr.ToString().c_str(), nScore);
{
LOCK(cs_mapLocalHost);
bool fAlready = mapLocalHost.count(addr) > 0;
LocalServiceInfo &info = mapLocalHost[addr];
if (!fAlready || nScore >= info.nScore) {
info.nScore = nScore + (fAlready ? 1 : 0);
info.nPort = addr.GetPort();
}
SetReachable(addr.GetNetwork());
}
AdvertizeLocal();
return true;
}
bool AddLocal(const CNetAddr &addr, int nScore)
{
return AddLocal(CService(addr, GetListenPort()), nScore);
}
/** Make a particular network entirely off-limits (no automatic connects to it) */
void SetLimited(enum Network net, bool fLimited)
{
if (net == NET_UNROUTABLE)
return;
LOCK(cs_mapLocalHost);
vfLimited[net] = fLimited;
}
bool IsLimited(enum Network net)
{
LOCK(cs_mapLocalHost);
return vfLimited[net];
}
bool IsLimited(const CNetAddr &addr)
{
return IsLimited(addr.GetNetwork());
}
/** vote for a local address */
bool SeenLocal(const CService& addr)
{
{
LOCK(cs_mapLocalHost);
if (mapLocalHost.count(addr) == 0)
return false;
mapLocalHost[addr].nScore++;
}
AdvertizeLocal();
return true;
}
/** check whether a given address is potentially local */
bool IsLocal(const CService& addr)
{
LOCK(cs_mapLocalHost);
return mapLocalHost.count(addr) > 0;
}
/** check whether a given address is in a network we can probably connect to */
bool IsReachable(const CNetAddr& addr)
{
LOCK(cs_mapLocalHost);
enum Network net = addr.GetNetwork();
return vfReachable[net] && !vfLimited[net];
}
bool GetMyExternalIP2(const CService& addrConnect, const char* pszGet, const char* pszKeyword, CNetAddr& 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()) // HTTP response is separated from headers by blank line
{
while (true)
{
if (!RecvLine(hSocket, strLine))
{
closesocket(hSocket);
return false;
}
if (pszKeyword == NULL)
break;
if (strLine.find(pszKeyword) != string::npos)
{
strLine = strLine.substr(strLine.find(pszKeyword) + strlen(pszKeyword));
break;
}
}
closesocket(hSocket);
if (strLine.find("<") != string::npos)
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);
CService addr(strLine,0,true);
printf("GetMyExternalIP() received [%s] %s\n", strLine.c_str(), addr.ToString().c_str());
if (!addr.IsValid() || !addr.IsRoutable())
return false;
ipRet.SetIP(addr);
return true;
}
}
closesocket(hSocket);
return error("GetMyExternalIP() : connection closed");
}
// We now get our external IP from the IRC server first and only use this as a backup
bool GetMyExternalIP(CNetAddr& ipRet)
{
CService addrConnect;
const char* pszGet;
const char* pszKeyword;
for (int nLookup = 0; nLookup <= 1; nLookup++)
for (int nHost = 1; nHost <= 2; nHost++)
{
// We should be phasing out our use of sites like these. If we need
// replacements, we should ask for volunteers to put this simple
// php file on their web server that prints the client IP:
// <?php echo $_SERVER["REMOTE_ADDR"]; ?>
if (nHost == 1)
{
addrConnect = CService("91.198.22.70",80); // checkip.dyndns.org
if (nLookup == 1)
{
CService addrIP("checkip.dyndns.org", 80, true);
if (addrIP.IsValid())
addrConnect = addrIP;
}
pszGet = "GET / HTTP/1.1\r\n"
"Host: checkip.dyndns.org\r\n"
"User-Agent: Triangles\r\n"
"Connection: close\r\n"
"\r\n";
pszKeyword = "Address:";
}
else if (nHost == 2)
{
addrConnect = CService("74.208.43.192", 80); // www.showmyip.com
if (nLookup == 1)
{
CService addrIP("www.showmyip.com", 80, true);
if (addrIP.IsValid())
addrConnect = addrIP;
}
pszGet = "GET /simple/ HTTP/1.1\r\n"
"Host: www.showmyip.com\r\n"
"User-Agent: Triangles\r\n"
"Connection: close\r\n"
"\r\n";
pszKeyword = NULL; // Returns just IP address
}
if (GetMyExternalIP2(addrConnect, pszGet, pszKeyword, ipRet))
return true;
}
return false;
}
void ThreadGetMyExternalIP(void* parg)
{
// Make this thread recognisable as the external IP detection thread
RenameThread("Triangles-ext-ip");
CNetAddr addrLocalHost;
if (GetMyExternalIP(addrLocalHost))
{
printf("GetMyExternalIP() returned %s\n", addrLocalHost.ToStringIP().c_str());
AddLocal(addrLocalHost, LOCAL_HTTP);
}
}
void AddressCurrentlyConnected(const CService& addr)
{
addrman.Connected(addr);
}
CNode* FindNode(const CNetAddr& ip)
{
{
LOCK(cs_vNodes);
for (CNode* pnode : vNodes)
if ((CNetAddr)pnode->addr == ip)
return (pnode);
}
return NULL;
}
CNode* FindNode(std::string addrName)
{
LOCK(cs_vNodes);
for (CNode* pnode : vNodes)
if (pnode->addrName == addrName)
return (pnode);
return NULL;
}
CNode* FindNode(const CService& addr)
{
{
LOCK(cs_vNodes);
for (CNode* pnode : vNodes)
if ((CService)pnode->addr == addr)
return (pnode);
}
return NULL;
}
CNode* ConnectNode(CAddress addrConnect, const char *pszDest)
{
if (pszDest == NULL) {
if (IsLocal(addrConnect))
return NULL;
// Look for an existing connection
CNode* pnode = FindNode((CService)addrConnect);
if (pnode)
{
pnode->AddRef();
return pnode;
}
}
if (fDebug) {
printf("ConnectNode(): pszDest: %s\n", pszDest);
}
/// debug print
printf("trying connection %s lastseen=%.1fhrs\n",
pszDest ? pszDest : addrConnect.ToString().c_str(),
pszDest ? 0 : (double)(GetAdjustedTime() - addrConnect.nTime)/3600.0);
// Connect
SOCKET hSocket;
if (pszDest ? ConnectSocketByName(addrConnect, hSocket, pszDest, GetDefaultPort()) : ConnectSocket(addrConnect, hSocket))
{
addrman.Attempt(addrConnect);
/// debug print
printf("connected %s\n", pszDest ? pszDest : addrConnect.ToString().c_str());
// Set to non-blocking
#ifdef WIN32
u_long nOne = 1;
if (ioctlsocket(hSocket, FIONBIO, &nOne) == SOCKET_ERROR)
printf("ConnectSocket() : ioctlsocket non-blocking setting failed, error %d\n", WSAGetLastError());
#else
if (fcntl(hSocket, F_SETFL, O_NONBLOCK) == SOCKET_ERROR)
printf("ConnectSocket() : fcntl non-blocking setting failed, error %d\n", errno);
#endif
// Add node
CNode* pnode = new CNode(hSocket, addrConnect, pszDest ? pszDest : "", false);
pnode->AddRef();
{
LOCK(cs_vNodes);
vNodes.push_back(pnode);
}
pnode->nTimeConnected = GetTime();
return pnode;
}
else
{
return NULL;
}
}
void CNode::CloseSocketDisconnect()
{
fDisconnect = true;
if (hSocket != INVALID_SOCKET)
{
printf("disconnecting node %s\n", addrName.c_str());
closesocket(hSocket);
hSocket = INVALID_SOCKET;
// in case this fails, we'll empty the recv buffer when the CNode is deleted
TRY_LOCK(cs_vRecvMsg, lockRecv);
if (lockRecv)
vRecvMsg.clear();
}
}
void CNode::Cleanup()
{
}
void CNode::PushVersion()
{
/// when NTP implemented, change to just nTime = GetAdjustedTime()
int64_t nTime = (fInbound ? GetAdjustedTime() : GetTime());
CAddress addrYou = (addr.IsRoutable() && !IsProxy(addr) ? addr : CAddress(CService("0.0.0.0",0)));
CAddress addrMe = GetLocalAddress(&addr);
RAND_bytes((unsigned char*)&nLocalHostNonce, sizeof(nLocalHostNonce));
printf("send version message: version %d, blocks=%d, us=%s, them=%s, peer=%s\n", PROTOCOL_VERSION, nBestHeight, addrMe.ToString().c_str(), addrYou.ToString().c_str(), addr.ToString().c_str());
PushMessage("version", PROTOCOL_VERSION, nLocalServices, nTime, addrYou, addrMe,
nLocalHostNonce, FormatSubVersion(CLIENT_NAME, CLIENT_VERSION, std::vector<string>()), nBestHeight);
}
std::map<CNetAddr, int64_t> CNode::setBanned;
CCriticalSection CNode::cs_setBanned;
void CNode::ClearBanned()
{
setBanned.clear();
}
bool CNode::IsBanned(CNetAddr ip)
{
bool fResult = false;
{
LOCK(cs_setBanned);
std::map<CNetAddr, int64_t>::iterator i = setBanned.find(ip);
if (i != setBanned.end())
{
int64_t t = (*i).second;
if (GetTime() < t)
fResult = true;
}
}
return fResult;
}
bool CNode::Misbehaving(int howmuch)
{
if (addr.IsLocal())
{
printf("Warning: Local node %s misbehaving (delta: %d)!\n", addrName.c_str(), howmuch);
return false;
}
nMisbehavior += howmuch;
if (nMisbehavior >= GetArg("-banscore", 100))
{
int64_t banTime = GetTime()+GetArg("-bantime", 60*60*24); // Default 24-hour ban
printf("Misbehaving: %s (%d -> %d) DISCONNECTING\n", addr.ToString().c_str(), nMisbehavior-howmuch, nMisbehavior);
{
LOCK(cs_setBanned);
if (setBanned[addr] < banTime)
setBanned[addr] = banTime;
}
CloseSocketDisconnect();
return true;
} else
printf("Misbehaving: %s (%d -> %d)\n", addr.ToString().c_str(), nMisbehavior-howmuch, nMisbehavior);
return false;
}
#undef X
#define X(name) stats.name = name
void CNode::copyStats(CNodeStats &stats)
{
X(nServices);
X(nLastSend);
X(nLastRecv);
X(nSendBytes);
X(nRecvBytes);
X(nTimeConnected);
X(addrName);
X(nVersion);
X(strSubVer);
X(fInbound);
X(nStartingHeight);
X(nMisbehavior);
}
#undef X
// requires LOCK(cs_vRecvMsg)
bool CNode::ReceiveMsgBytes(const char *pch, unsigned int nBytes)
{
while (nBytes > 0) {
// get current incomplete message, or create a new one
if (vRecvMsg.empty() ||
vRecvMsg.back().complete())
vRecvMsg.push_back(CNetMessage(SER_NETWORK, nRecvVersion));
CNetMessage& msg = vRecvMsg.back();
// absorb network data
int handled;
if (!msg.in_data)
handled = msg.readHeader(pch, nBytes);
else
handled = msg.readData(pch, nBytes);
if (handled < 0)
return false;
pch += handled;
nBytes -= handled;
if (msg.complete())
msg.nTime = GetTimeMicros();
}
return true;
}
int CNetMessage::readHeader(const char *pch, unsigned int nBytes)
{
// copy data to temporary parsing buffer
unsigned int nRemaining = 24 - nHdrPos;
unsigned int nCopy = std::min(nRemaining, nBytes);
memcpy(&hdrbuf[nHdrPos], pch, nCopy);
nHdrPos += nCopy;
// if header incomplete, exit
if (nHdrPos < 24)
return nCopy;
// deserialize to CMessageHeader
try {
hdrbuf >> hdr;
}
catch (std::exception &e) {
return -1;
}
// reject messages larger than MAX_SIZE
if (hdr.nMessageSize > MAX_SIZE)
return -1;
// switch state to reading message data
in_data = true;
vRecv.resize(hdr.nMessageSize);
return nCopy;
}
int CNetMessage::readData(const char *pch, unsigned int nBytes)
{
unsigned int nRemaining = hdr.nMessageSize - nDataPos;
unsigned int nCopy = std::min(nRemaining, nBytes);
memcpy(&vRecv[nDataPos], pch, nCopy);
nDataPos += nCopy;
return nCopy;
}
// requires LOCK(cs_vSend)
void SocketSendData(CNode *pnode)
{
std::deque<CSerializeData>::iterator it = pnode->vSendMsg.begin();
while (it != pnode->vSendMsg.end()) {
const CSerializeData &data = *it;
assert(data.size() > pnode->nSendOffset);
int nBytes = send(pnode->hSocket, &data[pnode->nSendOffset], data.size() - pnode->nSendOffset, MSG_NOSIGNAL | MSG_DONTWAIT);
if (nBytes > 0) {
pnode->nLastSend = GetTime();
pnode->nSendOffset += nBytes;
pnode->nSendBytes += nBytes;
if (pnode->nSendOffset == data.size()) {
pnode->nSendOffset = 0;
pnode->nSendSize -= data.size();
it++;
} else {
// could not send full message; stop sending more
break;
}
} 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();
}
}
// couldn't send anything at all
break;
}
}
if (it == pnode->vSendMsg.end()) {
assert(pnode->nSendOffset == 0);
assert(pnode->nSendSize == 0);
}
pnode->vSendMsg.erase(pnode->vSendMsg.begin(), it);
}
void ThreadSocketHandler(void* parg)
{
// Make this thread recognisable as the networking thread
RenameThread("Triangles-net");
try
{
vnThreadsRunning[THREAD_SOCKETHANDLER]++;
ThreadSocketHandler2(parg);
vnThreadsRunning[THREAD_SOCKETHANDLER]--;
}
catch (std::exception& e) {
vnThreadsRunning[THREAD_SOCKETHANDLER]--;
PrintException(&e, "ThreadSocketHandler()");
} catch (...) {
vnThreadsRunning[THREAD_SOCKETHANDLER]--;
throw; // support pthread_cancel()
}
printf("ThreadSocketHandler exited\n");
}
void ThreadSocketHandler2(void* parg)
{
printf("ThreadSocketHandler started\n");
list<CNode*> vNodesDisconnected;
unsigned int nPrevNodeCount = 0;
while (true)
{
//
// Disconnect nodes
//
{
LOCK(cs_vNodes);
// Disconnect unused nodes
vector<CNode*> vNodesCopy = vNodes;
for (CNode* pnode : vNodesCopy)
{
if (pnode->fDisconnect ||
(pnode->GetRefCount() <= 0 && pnode->vRecvMsg.empty() && pnode->nSendSize == 0 && pnode->ssSend.empty()))
{
// remove from vNodes
vNodes.erase(remove(vNodes.begin(), vNodes.end(), pnode), vNodes.end());
// release outbound grant (if any)
pnode->grantOutbound.Release();
// close socket and cleanup
pnode->CloseSocketDisconnect();
pnode->Cleanup();
// hold in disconnected pool until all refs are released
if (pnode->fNetworkNode || pnode->fInbound)
pnode->Release();
vNodesDisconnected.push_back(pnode);
}
}
// Delete disconnected nodes
list<CNode*> vNodesDisconnectedCopy = vNodesDisconnected;
for (CNode* pnode : vNodesDisconnectedCopy)
{
// wait until threads are done using it
if (pnode->GetRefCount() <= 0)
{
bool fDelete = false;
{
TRY_LOCK(pnode->cs_vSend, lockSend);
if (lockSend)
{
TRY_LOCK(pnode->cs_vRecvMsg, lockRecv);
if (lockRecv)
{
TRY_LOCK(pnode->cs_mapRequests, lockReq);
if (lockReq)
{
TRY_LOCK(pnode->cs_inventory, lockInv);
if (lockInv)
fDelete = true;
}
}
}
}
if (fDelete)
{
vNodesDisconnected.remove(pnode);
delete pnode;
}
}
}
}
{
// Read vNodes.size() under the lock to avoid data race
unsigned int nNodeCount;
{
LOCK(cs_vNodes);
nNodeCount = vNodes.size();
}
if (nNodeCount != nPrevNodeCount)
{
nPrevNodeCount = nNodeCount;
if (!fShutdown)
uiInterface.NotifyNumConnectionsChanged(nNodeCount);
}
}
//
// Find which sockets have data to receive
//
struct timeval timeout;
timeout.tv_sec = 0;
timeout.tv_usec = IsInitialBlockDownload() ? 1000 : 50000; // 1ms during IBD, 50ms normal
fd_set fdsetRecv;
fd_set fdsetSend;
fd_set fdsetError;
FD_ZERO(&fdsetRecv);
FD_ZERO(&fdsetSend);
FD_ZERO(&fdsetError);
SOCKET hSocketMax = 0;
bool have_fds = false;
for (SOCKET hListenSocket : vhListenSocket) {
FD_SET(hListenSocket, &fdsetRecv);
hSocketMax = max(hSocketMax, hListenSocket);
have_fds = true;
}
{
LOCK(cs_vNodes);
for (CNode* pnode : vNodes)
{
if (pnode->hSocket == INVALID_SOCKET)
continue;
FD_SET(pnode->hSocket, &fdsetRecv);
FD_SET(pnode->hSocket, &fdsetError);
hSocketMax = max(hSocketMax, pnode->hSocket);
have_fds = true;
{
TRY_LOCK(pnode->cs_vSend, lockSend);
if (lockSend && !pnode->ssSend.empty())
FD_SET(pnode->hSocket, &fdsetSend);
}
}
}
vnThreadsRunning[THREAD_SOCKETHANDLER]--;
int nSelect = select(have_fds ? hSocketMax + 1 : 0,
&fdsetRecv, &fdsetSend, &fdsetError, &timeout);
vnThreadsRunning[THREAD_SOCKETHANDLER]++;
if (fShutdown)
return;
if (nSelect == SOCKET_ERROR)
{
if (have_fds)
{
int nErr = WSAGetLastError();
printf("socket select error %d\n", nErr);
for (unsigned int i = 0; i <= hSocketMax; i++)
FD_SET(i, &fdsetRecv);
}
FD_ZERO(&fdsetSend);
FD_ZERO(&fdsetError);
MilliSleep(timeout.tv_usec/1000);
}
//
// Accept new connections
//
for (SOCKET hListenSocket : vhListenSocket)
if (hListenSocket != INVALID_SOCKET && FD_ISSET(hListenSocket, &fdsetRecv))
{
#ifdef USE_IPV6
struct sockaddr_storage sockaddr;
#else
struct sockaddr sockaddr;
#endif
socklen_t len = sizeof(sockaddr);
SOCKET hSocket = accept(hListenSocket, (struct sockaddr*)&sockaddr, &len);
CAddress addr;
int nInbound = 0;
if (hSocket != INVALID_SOCKET)
if (!addr.SetSockAddr((const struct sockaddr*)&sockaddr))
printf("Warning: Unknown socket family\n");
{
LOCK(cs_vNodes);
for (CNode* pnode : vNodes)
if (pnode->fInbound)
nInbound++;
}
if (hSocket == INVALID_SOCKET)
{
int nErr = WSAGetLastError();
if (nErr != WSAEWOULDBLOCK)
printf("socket error accept failed: %d\n", nErr);
}
else if (nInbound >= GetArg("-maxconnections", 125) - MAX_OUTBOUND_CONNECTIONS)
{
closesocket(hSocket);
}
else if (CNode::IsBanned(addr))
{
printf("connection from %s dropped (banned)\n", addr.ToString().c_str());
closesocket(hSocket);
}
else
{
printf("accepted connection %s\n", addr.ToString().c_str());
CNode* pnode = new CNode(hSocket, addr, "", true);
pnode->AddRef();
{
LOCK(cs_vNodes);
vNodes.push_back(pnode);
}
}
}
//
// Service each socket
//
vector<CNode*> vNodesCopy;
{
LOCK(cs_vNodes);
vNodesCopy = vNodes;
for (CNode* pnode : vNodesCopy)
pnode->AddRef();
}
for (CNode* pnode : vNodesCopy)
{
if (fShutdown)
break;
//
// Receive
//
if (pnode->hSocket == INVALID_SOCKET)
continue;
if (FD_ISSET(pnode->hSocket, &fdsetRecv) || FD_ISSET(pnode->hSocket, &fdsetError))
{
TRY_LOCK(pnode->cs_vRecvMsg, lockRecv);
if (lockRecv)
{
if (pnode->GetTotalRecvSize() > ReceiveFloodSize()) {
if (!pnode->fDisconnect)
printf("socket recv flood control disconnect (%u bytes)\n", pnode->GetTotalRecvSize());
pnode->CloseSocketDisconnect();
}
else {
// typical socket buffer is 8K-64K
char pchBuf[0x10000];
int nBytes = recv(pnode->hSocket, pchBuf, sizeof(pchBuf), MSG_DONTWAIT);
if (nBytes > 0)
{
if (!pnode->ReceiveMsgBytes(pchBuf, nBytes))
pnode->CloseSocketDisconnect();
pnode->nLastRecv = GetTime();
pnode->nRecvBytes += nBytes;
}
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_LOCK(pnode->cs_vSend, lockSend);
if (lockSend)
SocketSendData(pnode);
}
//
// Inactivity checking
//
int64_t nTime = GetTime();
if (nTime - 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;
}
}
}
{
LOCK(cs_vNodes);
for (CNode* pnode : vNodesCopy)
pnode->Release();
}
if (fShutdown)
return;
MilliSleep(10);
}
}
#ifdef USE_UPNP
void ThreadMapPort(void* parg)
{
// Make this thread recognisable as the UPnP thread
RenameThread("Triangles-UPnP");
try
{
vnThreadsRunning[THREAD_UPNP]++;
ThreadMapPort2(parg);
vnThreadsRunning[THREAD_UPNP]--;
}
catch (std::exception& e) {
vnThreadsRunning[THREAD_UPNP]--;
PrintException(&e, "ThreadMapPort()");
} catch (...) {
vnThreadsRunning[THREAD_UPNP]--;
PrintException(NULL, "ThreadMapPort()");
}
printf("ThreadMapPort exited\n");
}
void ThreadMapPort2(void* parg)
{
printf("ThreadMapPort started\n");
std::string port = strprintf("%u", GetListenPort());
const char * multicastif = 0;
const char * minissdpdpath = 0;
struct UPNPDev * devlist = 0;
char lanaddr[64];
#ifndef UPNPDISCOVER_SUCCESS
/* miniupnpc 1.5 */
devlist = upnpDiscover(2000, multicastif, minissdpdpath, 0);
#else
/* miniupnpc 1.6+ */
int error = 0;
devlist = upnpDiscover(2000, multicastif, minissdpdpath, 0, 0, 2, &error);
#endif
struct UPNPUrls urls;
struct IGDdatas data;
int r;
char wanaddr[64] = "";
#if MINIUPNPC_API_VERSION >= 18
r = UPNP_GetValidIGD(devlist, &urls, &data, lanaddr, sizeof(lanaddr), wanaddr, sizeof(wanaddr));
#else
r = UPNP_GetValidIGD(devlist, &urls, &data, lanaddr, sizeof(lanaddr));
#endif
if (r == 1)
{
//if (fDiscover) {
char externalIPAddress[40];
r = UPNP_GetExternalIPAddress(urls.controlURL, data.first.servicetype, externalIPAddress);
if(r != UPNPCOMMAND_SUCCESS)
printf("UPnP: GetExternalIPAddress() returned %d\n", r);
else
{
if(externalIPAddress[0])
{
printf("UPnP: ExternalIPAddress = %s\n", externalIPAddress);
AddLocal(CNetAddr(externalIPAddress), LOCAL_UPNP);
}
else
printf("UPnP: GetExternalIPAddress failed.\n");
}
//}
string strDesc = "Triangles " + FormatFullVersion();
#ifndef UPNPDISCOVER_SUCCESS
/* miniupnpc 1.5 */
r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
port.c_str(), port.c_str(), lanaddr, strDesc.c_str(), "TCP", 0);
#else
/* miniupnpc 1.6 */
r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
port.c_str(), port.c_str(), lanaddr, strDesc.c_str(), "TCP", 0, "0");
#endif
if(r!=UPNPCOMMAND_SUCCESS)
printf("AddPortMapping(%s, %s, %s) failed with code %d (%s)\n",
port.c_str(), port.c_str(), lanaddr, r, strupnperror(r));
else
printf("UPnP Port Mapping successful.\n");
int i = 1;
while (true)
{
if (fShutdown || !fUseUPnP)
{
r = UPNP_DeletePortMapping(urls.controlURL, data.first.servicetype, port.c_str(), "TCP", 0);
printf("UPNP_DeletePortMapping() returned : %d\n", r);
freeUPNPDevlist(devlist); devlist = 0;
FreeUPNPUrls(&urls);
return;
}
if (i % 600 == 0) // Refresh every 20 minutes
{
#ifndef UPNPDISCOVER_SUCCESS
/* miniupnpc 1.5 */
r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
port.c_str(), port.c_str(), lanaddr, strDesc.c_str(), "TCP", 0);
#else
/* miniupnpc 1.6 */
r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
port.c_str(), port.c_str(), lanaddr, strDesc.c_str(), "TCP", 0, "0");
#endif
if(r!=UPNPCOMMAND_SUCCESS)
printf("AddPortMapping(%s, %s, %s) failed with code %d (%s)\n",
port.c_str(), port.c_str(), lanaddr, r, strupnperror(r));
else
printf("UPnP Port Mapping successful.\n");;
}
MilliSleep(2000);
i++;
}
} else {
printf("No valid UPnP IGDs found\n");
freeUPNPDevlist(devlist); devlist = 0;
if (r != 0)
FreeUPNPUrls(&urls);
while (true)
{
if (fShutdown || !fUseUPnP)
return;
MilliSleep(2000);
}
}
printf("ThreadMapPort2 exited\n");
}
void MapPort()
{
printf("MapPort()...\n");
if (fUseUPnP && vnThreadsRunning[THREAD_UPNP] < 1)
{
if (!NewThread(ThreadMapPort, NULL))
printf("Error: ThreadMapPort(ThreadMapPort) failed\n");
}
}
#else
void MapPort()
{
// Intentionally left blank.
}
#endif
void ThreadOnionSeed(void* parg)
{
// Make this thread recognisable as the tor thread
RenameThread("Triangles-onionseed");
static const char *(*strOnionSeed)[1] = fTestNet ? strTestNetOnionSeed : strMainNetOnionSeed;
int found = 0;
printf("Loading addresses from .onion seeds\n");
for (unsigned int seed_idx = 0; strOnionSeed[seed_idx][0] != NULL; seed_idx++) {
CNetAddr parsed;
if (
!parsed.SetSpecial(
strOnionSeed[seed_idx][0]
)
) {
throw runtime_error("ThreadOnionSeed() : invalid .onion seed");
}
int nOneDay = 24*3600;
CAddress addr = CAddress(CService(parsed, GetDefaultPort()));
addr.nTime = GetTime() - 3*nOneDay - GetRand(4*nOneDay); // use a random age between 3 and 7 days old
found++;
addrman.Add(addr, parsed);
}
printf("%d addresses found from .onion seeds\n", found);
}
// Hardcoded seeds removed - peer discovery is now fully dynamic via HTTP seed list.
// See: seeds.cryptographic-triangles.org
unsigned int pnSeed[] = {
};
void DumpAddresses()
{
int64_t nStart = GetTimeMillis();
CAddrDB adb;
adb.Write(addrman);
printf("Flushed %d addresses to peers.dat %"PRId64"ms\n",
addrman.size(), GetTimeMillis() - nStart);
}
void ThreadDumpAddress2(void* parg)
{
vnThreadsRunning[THREAD_DUMPADDRESS]++;
while (!fShutdown)
{
DumpAddresses();
vnThreadsRunning[THREAD_DUMPADDRESS]--;
MilliSleep(600000);
vnThreadsRunning[THREAD_DUMPADDRESS]++;
}
vnThreadsRunning[THREAD_DUMPADDRESS]--;
}
void ThreadDumpAddress(void* parg)
{
// Make this thread recognisable as the address dumping thread
RenameThread("Triangles-adrdump");
try
{
ThreadDumpAddress2(parg);
}
catch (std::exception& e) {
PrintException(&e, "ThreadDumpAddress()");
}
printf("ThreadDumpAddress exited\n");
}
void ThreadHTTPSeedFetch2(void* parg)
{
static const char* DEFAULT_SEED_URL_HOST = "seeds.cryptographic-triangles.org";
static const char* DEFAULT_SEED_URL_PATH = "/seeds.txt";
static const int HTTP_PORT = 80;
std::string seedHost = GetArg("-seedurl", DEFAULT_SEED_URL_HOST);
std::string seedPath = DEFAULT_SEED_URL_PATH;
// Allow full URL override: -seedurl=myhost.com/path/seeds.txt
size_t slashPos = seedHost.find('/');
if (slashPos != std::string::npos) {
seedPath = seedHost.substr(slashPos);
seedHost = seedHost.substr(0, slashPos);
}
printf("Fetching seed list from http://%s%s ...\n", seedHost.c_str(), seedPath.c_str());
try {
boost::asio::io_context io_context;
boost::asio::ip::tcp::resolver resolver(io_context);
boost::system::error_code resolve_ec;
auto endpoints = resolver.resolve(seedHost, std::to_string(HTTP_PORT), resolve_ec);
if (resolve_ec) {
printf("HTTP seed fetch: cannot resolve %s (%s)\n", seedHost.c_str(), resolve_ec.message().c_str());
return;
}
boost::asio::ip::tcp::socket socket(io_context);
boost::asio::connect(socket, endpoints);
std::string request =
"GET " + seedPath + " HTTP/1.1\r\n"
"Host: " + seedHost + "\r\n"
"Connection: close\r\n"
"User-Agent: Triangles\r\n"
"\r\n";
boost::asio::write(socket, boost::asio::buffer(request));
// Read response
boost::asio::streambuf response_buf;
boost::asio::read_until(socket, response_buf, "\r\n\r\n");
std::istream response_stream(&response_buf);
std::string http_version;
unsigned int status_code = 0;
response_stream >> http_version >> status_code;
std::string status_message;
std::getline(response_stream, status_message);
if (status_code != 200) {
printf("HTTP seed fetch: got status %u from %s\n", status_code, seedHost.c_str());
return;
}
// Skip remaining headers
std::string header_line;
while (std::getline(response_stream, header_line) && header_line != "\r") {}
// Read body (remainder in buffer + rest from socket)
std::string body;
// First, grab anything already buffered past the headers
if (response_buf.size() > 0) {
std::istream body_stream(&response_buf);
std::ostringstream oss;
oss << body_stream.rdbuf();
body = oss.str();
}
// Read rest until EOF
boost::system::error_code ec;
while (boost::asio::read(socket, response_buf, boost::asio::transfer_at_least(1), ec)) {
std::istream s(&response_buf);
std::ostringstream oss;
oss << s.rdbuf();
body += oss.str();
}
// Parse one address per line: "address:port" or just "address"
int found = 0;
std::istringstream lines(body);
std::string line;
while (std::getline(lines, line))
{
if (fShutdown)
return;
// Trim whitespace and carriage returns
while (!line.empty() && (line.back() == '\r' || line.back() == ' ' || line.back() == '\t'))
line.pop_back();
while (!line.empty() && (line.front() == ' ' || line.front() == '\t'))
line.erase(line.begin());
if (line.empty() || line[0] == '#')
continue;
// Parse address:port
std::string addrStr = line;
int port = GetDefaultPort();
// For .onion addresses, the last colon before port is after ".onion"
size_t onionPos = addrStr.find(".onion:");
if (onionPos != std::string::npos) {
port = atoi(addrStr.substr(onionPos + 7).c_str());
addrStr = addrStr.substr(0, onionPos + 6); // keep ".onion"
} else if (addrStr.find(".onion") == std::string::npos) {
// Clearnet address - find last colon for port
size_t colonPos = addrStr.rfind(':');
if (colonPos != std::string::npos) {
port = atoi(addrStr.substr(colonPos + 1).c_str());
addrStr = addrStr.substr(0, colonPos);
}
}
if (port <= 0 || port > 65535)
port = GetDefaultPort();
CNetAddr parsed;
bool resolved = parsed.SetSpecial(addrStr);
if (!resolved) {
std::vector<CNetAddr> vIP;
if (LookupHost(addrStr.c_str(), vIP, 1, false) && !vIP.empty()) {
parsed = vIP[0];
resolved = true;
}
}
if (resolved) {
CAddress addr(CService(parsed, port));
addr.nTime = GetTime() - 3*24*60*60; // 3 days ago
addrman.Add(addr, CNetAddr("http-seed", true));
found++;
}
}
printf("%d addresses found from HTTP seed list (%s)\n", found, seedHost.c_str());
} catch (std::exception& e) {
printf("HTTP seed fetch failed: %s\n", e.what());
}
}
void ThreadHTTPSeedFetch(void* parg)
{
RenameThread("Triangles-httpseed");
try
{
vnThreadsRunning[THREAD_HTTPSEED]++;
ThreadHTTPSeedFetch2(parg);
vnThreadsRunning[THREAD_HTTPSEED]--;
}
catch (std::exception& e) {
vnThreadsRunning[THREAD_HTTPSEED]--;
PrintException(&e, "ThreadHTTPSeedFetch()");
} catch (...) {
vnThreadsRunning[THREAD_HTTPSEED]--;
PrintException(NULL, "ThreadHTTPSeedFetch()");
}
printf("ThreadHTTPSeedFetch exited\n");
}
void ThreadOpenConnections(void* parg)
{
// Make this thread recognisable as the connection opening thread
RenameThread("Triangles-opencon");
try
{
vnThreadsRunning[THREAD_OPENCONNECTIONS]++;
ThreadOpenConnections2(parg);
vnThreadsRunning[THREAD_OPENCONNECTIONS]--;
}
catch (std::exception& e) {
vnThreadsRunning[THREAD_OPENCONNECTIONS]--;
PrintException(&e, "ThreadOpenConnections()");
} catch (...) {
vnThreadsRunning[THREAD_OPENCONNECTIONS]--;
PrintException(NULL, "ThreadOpenConnections()");
}
printf("ThreadOpenConnections exited\n");
}
void static ProcessOneShot()
{
string strDest;
{
LOCK(cs_vOneShots);
if (vOneShots.empty())
return;
strDest = vOneShots.front();
vOneShots.pop_front();
}
CAddress addr;
CSemaphoreGrant grant(*semOutbound, true);
if (grant) {
if (!OpenNetworkConnection(addr, &grant, strDest.c_str(), true))
AddOneShot(strDest);
}
}
// triangles: stake miner thread
void static ThreadStakeMiner(void* parg)
{
printf("ThreadStakeMiner started\n");
CWallet* pwallet = (CWallet*)parg;
try
{
vnThreadsRunning[THREAD_STAKE_MINER]++;
StakeMiner(pwallet);
vnThreadsRunning[THREAD_STAKE_MINER]--;
}
catch (std::exception& e) {
vnThreadsRunning[THREAD_STAKE_MINER]--;
PrintException(&e, "ThreadStakeMiner()");
} catch (...) {
vnThreadsRunning[THREAD_STAKE_MINER]--;
PrintException(NULL, "ThreadStakeMiner()");
}
printf("ThreadStakeMiner exiting, %d threads remaining\n", vnThreadsRunning[THREAD_STAKE_MINER]);
}
void ThreadOpenConnections2(void* parg)
{
printf("ThreadOpenConnections started\n");
// Connect to specific addresses
if (mapArgs.count("-connect") && mapMultiArgs["-connect"].size() > 0)
{
for (int64_t nLoop = 0;; nLoop++)
{
ProcessOneShot();
for (string strAddr : mapMultiArgs["-connect"])
{
CAddress addr;
OpenNetworkConnection(addr, NULL, strAddr.c_str());
for (int i = 0; i < 10 && i < nLoop; i++)
{
MilliSleep(500);
if (fShutdown)
return;
}
}
MilliSleep(500);
}
}
// Initiate network connections
int64_t nStart = GetTime();
while (true)
{
ProcessOneShot();
vnThreadsRunning[THREAD_OPENCONNECTIONS]--;
MilliSleep(500);
vnThreadsRunning[THREAD_OPENCONNECTIONS]++;
if (fShutdown)
return;
vnThreadsRunning[THREAD_OPENCONNECTIONS]--;
CSemaphoreGrant grant(*semOutbound);
vnThreadsRunning[THREAD_OPENCONNECTIONS]++;
if (fShutdown)
return;
// Hardcoded seed fallback removed - peer discovery is now fully dynamic
// via HTTP seed list from seeds.cryptographic-triangles.org
//
// Choose an address to connect to based on most recently seen
//
CAddress addrConnect;
// Only connect out to one peer per network group (/16 for IPv4).
// Do this here so we don't have to critsect vNodes inside mapAddresses critsect.
int nOutbound = 0;
set<vector<unsigned char> > setConnected;
{
LOCK(cs_vNodes);
for (CNode* pnode : vNodes) {
if (!pnode->fInbound) {
setConnected.insert(pnode->addr.GetGroup());
nOutbound++;
}
}
}
int64_t nANow = GetAdjustedTime();
int nTries = 0;
while (true)
{
// use an nUnkBias between 10 (no outgoing connections) and 90 (8 outgoing connections)
CAddress addr = addrman.Select(10 + min(nOutbound,8)*10);
// if we selected an invalid address, restart
if (!addr.IsValid() || setConnected.count(addr.GetGroup()) || IsLocal(addr))
break;
// If we didn't find an appropriate destination after trying 100 addresses fetched from addrman,
// stop this loop, and let the outer loop run again (which sleeps, adds seed nodes, recalculates
// already-connected network ranges, ...) before trying new addrman addresses.
nTries++;
if (nTries > 100)
break;
if (IsLimited(addr))
continue;
// only consider very recently tried nodes after 30 failed attempts
if (nANow - addr.nLastTry < 120 && nTries < 30)
continue;
// do not allow non-default ports, unless after 50 invalid addresses selected already
if (addr.GetPort() != GetDefaultPort() && nTries < 50)
continue;
addrConnect = addr;
break;
}
if (addrConnect.IsValid())
OpenNetworkConnection(addrConnect, &grant);
}
}
void ThreadOpenAddedConnections(void* parg)
{
// Make this thread recognisable as the connection opening thread
RenameThread("Triangles-opencon");
try
{
vnThreadsRunning[THREAD_ADDEDCONNECTIONS]++;
ThreadOpenAddedConnections2(parg);
vnThreadsRunning[THREAD_ADDEDCONNECTIONS]--;
}
catch (std::exception& e) {
vnThreadsRunning[THREAD_ADDEDCONNECTIONS]--;
PrintException(&e, "ThreadOpenAddedConnections()");
} catch (...) {
vnThreadsRunning[THREAD_ADDEDCONNECTIONS]--;
PrintException(NULL, "ThreadOpenAddedConnections()");
}
printf("ThreadOpenAddedConnections exited\n");
}
void ThreadOpenAddedConnections2(void* parg)
{
printf("ThreadOpenAddedConnections started\n");
if (mapArgs.count("-addnode") == 0)
return;
if (HaveNameProxy()) {
while(!fShutdown) {
for (string& strAddNode : mapMultiArgs["-addnode"]) {
CAddress addr;
CSemaphoreGrant grant(*semOutbound);
OpenNetworkConnection(addr, &grant, strAddNode.c_str());
MilliSleep(500);
}
vnThreadsRunning[THREAD_ADDEDCONNECTIONS]--;
MilliSleep(120000); // Retry every 2 minutes
vnThreadsRunning[THREAD_ADDEDCONNECTIONS]++;
}
return;
}
vector<vector<CService> > vservAddressesToAdd(0);
for (string& strAddNode : mapMultiArgs["-addnode"])
{
vector<CService> vservNode(0);
if(Lookup(strAddNode.c_str(), vservNode, GetDefaultPort(), fNameLookup, 0))
{
vservAddressesToAdd.push_back(vservNode);
{
LOCK(cs_setservAddNodeAddresses);
for (CService& serv : vservNode)
setservAddNodeAddresses.insert(serv);
}
}
}
while (true)
{
vector<vector<CService> > vservConnectAddresses = vservAddressesToAdd;
// Attempt to connect to each IP for each addnode entry until at least one is successful per addnode entry
// (keeping in mind that addnode entries can have many IPs if fNameLookup)
{
LOCK(cs_vNodes);
for (CNode* pnode : vNodes)
for (vector<vector<CService> >::iterator it = vservConnectAddresses.begin(); it != vservConnectAddresses.end(); it++)
for (CService& addrNode : *(it))
if (pnode->addr == addrNode)
{
it = vservConnectAddresses.erase(it);
it--;
break;
}
}
for (vector<CService>& vserv : vservConnectAddresses)
{
CSemaphoreGrant grant(*semOutbound);
OpenNetworkConnection(CAddress(*(vserv.begin())), &grant);
MilliSleep(500);
if (fShutdown)
return;
}
if (fShutdown)
return;
vnThreadsRunning[THREAD_ADDEDCONNECTIONS]--;
MilliSleep(120000); // Retry every 2 minutes
vnThreadsRunning[THREAD_ADDEDCONNECTIONS]++;
if (fShutdown)
return;
}
printf("ThreadOpenAddedConnections exited\n");
}
// if successful, this moves the passed grant to the constructed node
bool OpenNetworkConnection(const CAddress& addrConnect, CSemaphoreGrant *grantOutbound, const char *strDest, bool fOneShot)
{
//
// Initiate outbound network connection
//
if (fShutdown)
return false;
if (!strDest)
if (IsLocal(addrConnect) ||
FindNode((CNetAddr)addrConnect) || CNode::IsBanned(addrConnect) ||
FindNode(addrConnect.ToStringIPPort().c_str()))
return false;
if (strDest && FindNode(strDest))
return false;
vnThreadsRunning[THREAD_OPENCONNECTIONS]--;
CNode* pnode = ConnectNode(addrConnect, strDest);
vnThreadsRunning[THREAD_OPENCONNECTIONS]++;
if (fShutdown)
return false;
if (!pnode)
return false;
if (grantOutbound)
grantOutbound->MoveTo(pnode->grantOutbound);
pnode->fNetworkNode = true;
if (fOneShot)
pnode->fOneShot = true;
return true;
}
void ThreadMessageHandler(void* parg)
{
// Make this thread recognisable as the message handling thread
RenameThread("Triangles-msghand");
try
{
vnThreadsRunning[THREAD_MESSAGEHANDLER]++;
ThreadMessageHandler2(parg);
vnThreadsRunning[THREAD_MESSAGEHANDLER]--;
}
catch (std::exception& e) {
vnThreadsRunning[THREAD_MESSAGEHANDLER]--;
PrintException(&e, "ThreadMessageHandler()");
} catch (...) {
vnThreadsRunning[THREAD_MESSAGEHANDLER]--;
PrintException(NULL, "ThreadMessageHandler()");
}
printf("ThreadMessageHandler exited\n");
}
void ThreadMessageHandler2(void* parg)
{
printf("ThreadMessageHandler started\n");
SetThreadPriority(THREAD_PRIORITY_BELOW_NORMAL);
bool fWasBoosted = false;
while (!fShutdown)
{
vector<CNode*> vNodesCopy;
{
LOCK(cs_vNodes);
vNodesCopy = vNodes;
for (CNode* pnode : vNodesCopy)
pnode->AddRef();
}
// Poll the connected nodes for messages
CNode* pnodeTrickle = NULL;
if (!vNodesCopy.empty())
pnodeTrickle = vNodesCopy[GetRand(vNodesCopy.size())];
for (CNode* pnode : vNodesCopy)
{
if (fShutdown)
break;
// Receive messages
{
TRY_LOCK(pnode->cs_vRecvMsg, lockRecv);
if (lockRecv)
if (!ProcessMessages(pnode))
pnode->CloseSocketDisconnect();
}
// Send messages
{
TRY_LOCK(pnode->cs_vSend, lockSend);
if (lockSend)
SendMessages(pnode, pnode == pnodeTrickle);
}
}
{
LOCK(cs_vNodes);
for (CNode* pnode : vNodesCopy)
pnode->Release();
}
// Boost thread priority during IBD, restore when caught up
if (IsInitialBlockDownload() && !fWasBoosted) {
SetThreadPriority(THREAD_PRIORITY_NORMAL);
fWasBoosted = true;
} else if (!IsInitialBlockDownload() && fWasBoosted) {
SetThreadPriority(THREAD_PRIORITY_BELOW_NORMAL);
fWasBoosted = false;
}
// Wait and allow messages to bunch up.
// During IBD, use a shorter sleep to maximize block processing throughput.
// Reduce vnThreadsRunning so StopNode has permission to exit while
// we're sleeping, but we must always check fShutdown after doing this.
vnThreadsRunning[THREAD_MESSAGEHANDLER]--;
MilliSleep(IsInitialBlockDownload() ? 1 : 100);
if (fRequestShutdown)
StartShutdown();
vnThreadsRunning[THREAD_MESSAGEHANDLER]++;
if (fShutdown)
return;
}
printf("ThreadMessageHandler exited\n");
}
bool BindListenPort(const CService &addrBind, string& strError)
{
strError = "";
int nOne = 1;
#ifdef WIN32
// 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
#ifdef USE_IPV6
struct sockaddr_storage sockaddr;
#else
struct sockaddr sockaddr;
#endif
socklen_t len = sizeof(sockaddr);
if (!addrBind.GetSockAddr((struct sockaddr*)&sockaddr, &len))
{
strError = strprintf("Error: bind address family for %s not supported", addrBind.ToString().c_str());
printf("%s\n", strError.c_str());
return false;
}
SOCKET hListenSocket = socket(((struct sockaddr*)&sockaddr)->sa_family, 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 SO_NOSIGPIPE
// Different way of disabling SIGPIPE on BSD
setsockopt(hListenSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&nOne, sizeof(int));
#endif
#ifndef WIN32
// 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 WIN32
// Set to non-blocking, 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;
}
#ifdef USE_IPV6
// some systems don't have IPV6_V6ONLY but are always v6only; others do have the option
// and enable it by default or not. Try to enable it, if possible.
if (addrBind.IsIPv6()) {
#ifdef IPV6_V6ONLY
#ifdef WIN32
setsockopt(hListenSocket, IPPROTO_IPV6, IPV6_V6ONLY, (const char*)&nOne, sizeof(int));
#else
setsockopt(hListenSocket, IPPROTO_IPV6, IPV6_V6ONLY, (void*)&nOne, sizeof(int));
#endif
#endif
#ifdef WIN32
int nProtLevel = 10 /* PROTECTION_LEVEL_UNRESTRICTED */;
int nParameterId = 23 /* IPV6_PROTECTION_LEVEl */;
// this call is allowed to fail
setsockopt(hListenSocket, IPPROTO_IPV6, nParameterId, (const char*)&nProtLevel, sizeof(int));
#endif
}
#endif
if (::bind(hListenSocket, (struct sockaddr*)&sockaddr, len) == SOCKET_ERROR)
{
int nErr = WSAGetLastError();
if (nErr == WSAEADDRINUSE)
strError = strprintf(_("Unable to bind to %s on this computer. Triangles is probably already running."), addrBind.ToString().c_str());
else
strError = strprintf(_("Unable to bind to %s on this computer (bind returned error %d, %s)"), addrBind.ToString().c_str(), nErr, strerror(nErr));
printf("%s\n", strError.c_str());
return false;
}
printf("Bound to %s\n", addrBind.ToString().c_str());
// 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;
}
vhListenSocket.push_back(hListenSocket);
//if (addrBind.IsRoutable() && fDiscover)
// AddLocal(addrBind, LOCAL_BIND);
return true;
}
void static Discover()
{
// no network discovery
}
static void run_tor() {
// Tor process is now managed by CTorProcess (tor_process.cpp)
// which starts an external Tor binary with SOCKS5 proxy and v3 hidden service.
// The old embedded Tor v2 code was removed (incompatible with OpenSSL 3.x).
printf("Tor v3 mode: using managed Tor process via SOCKS5 proxy.\n");
triangles_tor_set_initialized();
}
void StartTor(void* parg)
{
// Make this thread recognisable as the tor thread
RenameThread("Triangles-onion");
printf("Onion thread started.");
try
{
run_tor();
}
catch (std::exception& e) {
PrintException(&e, "StartTor()");
}
printf("Onion thread exited.");
}
void StartNode(void* parg)
{
// Make this thread recognisable as the startup thread
RenameThread("Triangles-start");
if (semOutbound == NULL) {
// initialize semaphore
int nMaxOutbound = min(MAX_OUTBOUND_CONNECTIONS, (int)GetArg("-maxconnections", 125));
semOutbound = new CSemaphore(nMaxOutbound);
}
if (pnodeLocalHost == NULL)
pnodeLocalHost = new CNode(INVALID_SOCKET, CAddress(CService("127.0.0.1", 0), nLocalServices));
printf("StartNode(): pnodeLocalHost addr: %s\n",
pnodeLocalHost->addr.ToString().c_str());
Discover();
//
// Start threads
//
// start the onion seeder
if (!GetBoolArg("-onionseed", true))
printf(".onion seeding disabled\n");
else
if (!NewThread(ThreadOnionSeed, NULL))
printf("Error: NewThread(ThreadOnionSeed) failed\n");
// Map ports with UPnP (default)
if (fUseUPnP)
MapPort();
// HTTP seed list fetch (replaces DNS seeds)
if (GetBoolArg("-noseedurl", false))
printf("HTTP seed fetch disabled\n");
else if (!NewThread(ThreadHTTPSeedFetch, NULL))
printf("Error: NewThread(ThreadHTTPSeedFetch) failed\n");
// Send and receive from sockets, accept connections
if (!NewThread(ThreadSocketHandler, NULL))
printf("Error: NewThread(ThreadSocketHandler) failed\n");
// Initiate outbound connections from -addnode
if (!NewThread(ThreadOpenAddedConnections, NULL))
printf("Error: NewThread(ThreadOpenAddedConnections) failed\n");
// Initiate outbound connections
if (!NewThread(ThreadOpenConnections, NULL))
printf("Error: NewThread(ThreadOpenConnections) failed\n");
// Process messages
if (!NewThread(ThreadMessageHandler, NULL))
printf("Error: NewThread(ThreadMessageHandler) failed\n");
// Dump network addresses
if (!NewThread(ThreadDumpAddress, NULL))
printf("Error; NewThread(ThreadDumpAddress) failed\n");
// Mine proof-of-stake blocks in the background
if (!GetBoolArg("-stake", true))
printf("Staking disabled at startup (stake=0).\n");
else
if (!NewThread(ThreadStakeMiner, pwalletMain))
printf("Error: NewThread(ThreadStakeMiner) failed\n");
}
bool StopNode()
{
printf("StopNode()\n");
fShutdown = true;
nTransactionsUpdated++;
int64_t nStart = GetTime();
if (semOutbound)
for (int i=0; i<MAX_OUTBOUND_CONNECTIONS; i++)
semOutbound->post();
do
{
int nThreadsRunning = 0;
for (int n = 0; n < THREAD_MAX; n++)
nThreadsRunning += vnThreadsRunning[n];
if (nThreadsRunning == 0)
break;
if (GetTime() - nStart > 20)
break;
MilliSleep(20);
} while(true);
if (vnThreadsRunning[THREAD_SOCKETHANDLER] > 0) printf("ThreadSocketHandler still running\n");
if (vnThreadsRunning[THREAD_OPENCONNECTIONS] > 0) printf("ThreadOpenConnections still running\n");
if (vnThreadsRunning[THREAD_MESSAGEHANDLER] > 0) printf("ThreadMessageHandler still running\n");
if (vnThreadsRunning[THREAD_RPCLISTENER] > 0) printf("ThreadRPCListener still running\n");
if (vnThreadsRunning[THREAD_RPCHANDLER] > 0) printf("ThreadsRPCServer still running\n");
#ifdef USE_UPNP
if (vnThreadsRunning[THREAD_UPNP] > 0) printf("ThreadMapPort still running\n");
#endif
if (vnThreadsRunning[THREAD_HTTPSEED] > 0) printf("ThreadHTTPSeedFetch still running\n");
if (vnThreadsRunning[THREAD_ADDEDCONNECTIONS] > 0) printf("ThreadOpenAddedConnections still running\n");
if (vnThreadsRunning[THREAD_DUMPADDRESS] > 0) printf("ThreadDumpAddresses still running\n");
if (vnThreadsRunning[THREAD_STAKE_MINER] > 0) printf("ThreadStakeMiner still running\n");
{
int64_t nWaitStart = GetTime();
while (vnThreadsRunning[THREAD_MESSAGEHANDLER] > 0 || vnThreadsRunning[THREAD_RPCHANDLER] > 0)
{
if (GetTime() - nWaitStart > 10)
{
printf("Timed out waiting for message/RPC threads to stop\n");
break;
}
MilliSleep(20);
}
}
MilliSleep(50);
DumpAddresses();
// Force-disconnect and clean up all remaining nodes now that threads have stopped.
// Close sockets first so any lingering I/O fails immediately.
{
LOCK(cs_vNodes);
for (CNode* pnode : vNodes)
{
pnode->CloseSocketDisconnect();
pnode->Cleanup();
}
}
return true;
}
class CNetCleanup
{
public:
CNetCleanup()
{
}
~CNetCleanup()
{
// Close sockets - acquire lock in case other threads are still winding down
LOCK(cs_vNodes);
for (CNode* pnode : vNodes)
if (pnode->hSocket != INVALID_SOCKET)
closesocket(pnode->hSocket);
for (SOCKET hListenSocket : vhListenSocket)
if (hListenSocket != INVALID_SOCKET)
if (closesocket(hListenSocket) == SOCKET_ERROR)
printf("closesocket(hListenSocket) failed with error %d\n", WSAGetLastError());
#ifdef WIN32
// Shutdown Windows Sockets
WSACleanup();
#endif
}
}
instance_of_cnetcleanup;
void RelayTransaction(const CTransaction& tx, const uint256& hash)
{
CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
ss.reserve(10000);
ss << tx;
RelayTransaction(tx, hash, ss);
}
void RelayTransaction(const CTransaction& tx, const uint256& hash, const CDataStream& ss)
{
CInv inv(MSG_TX, hash);
{
LOCK(cs_mapRelay);
// Expire old relay messages
while (!vRelayExpiration.empty() && vRelayExpiration.front().first < GetTime())
{
mapRelay.erase(vRelayExpiration.front().second);
vRelayExpiration.pop_front();
}
// Save original serialized message so newer versions are preserved
mapRelay.insert(std::make_pair(inv, ss));
vRelayExpiration.push_back(std::make_pair(GetTime() + 15 * 60, inv));
}
RelayInventory(inv);
}