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Add -keepnode which attempts to -addnode and keep a connection open

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This commit is contained in:
Matt Corallo 2011-12-16 19:48:03 -05:00
parent 3f64fa1369
commit b24e6e4d1b
4 changed files with 100 additions and 22 deletions
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2
src/init.cpp
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@ -192,7 +192,7 @@ bool AppInit2(int argc, char* argv[])
" -dns \t " + _("Allow DNS lookups for addnode and connect") + "\n" +
" -port=<port> \t\t " + _("Listen for connections on <port> (default: 8333 or testnet: 18333)") + "\n" +
" -maxconnections=<n>\t " + _("Maintain at most <n> connections to peers (default: 125)") + "\n" +
" -addnode=<ip> \t " + _("Add a node to connect to") + "\n" +
" -addnode=<ip> \t " + _("Add a node to connect to and attempt to keep the connection open") + "\n" +
" -connect=<ip> \t\t " + _("Connect only to the specified node") + "\n" +
" -noirc \t " + _("Don't find peers using internet relay chat") + "\n" +
" -nolisten \t " + _("Don't accept connections from outside") + "\n" +

99
src/net.cpp
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@ -29,6 +29,7 @@ static const int MAX_OUTBOUND_CONNECTIONS = 8;
void ThreadMessageHandler2(void* parg);
void ThreadSocketHandler2(void* parg);
void ThreadOpenConnections2(void* parg);
void ThreadOpenAddedConnections2(void* parg);
#ifdef USE_UPNP
void ThreadMapPort2(void* parg);
#endif
@ -61,6 +62,9 @@ CCriticalSection cs_mapRelay;
map<CInv, int64> mapAlreadyAskedFor;
set<CNetAddr> setservAddNodeAddresses;
CCriticalSection cs_setservAddNodeAddresses;
@ -750,6 +754,8 @@ void ThreadSocketHandler2(void* parg)
}
else if (nInbound >= GetArg("-maxconnections", 125) - MAX_OUTBOUND_CONNECTIONS)
{
CRITICAL_BLOCK(cs_setservAddNodeAddresses)
if (!setservAddNodeAddresses.count(addr))
closesocket(hSocket);
}
else if (CNode::IsBanned(addr))
@ -1214,22 +1220,6 @@ void ThreadOpenConnections2(void* parg)
}
}
// Connect to manually added nodes first
if (mapArgs.count("-addnode"))
{
BOOST_FOREACH(string strAddr, mapMultiArgs["-addnode"])
{
CAddress addr(strAddr, fAllowDNS);
if (addr.IsValid())
{
OpenNetworkConnection(addr);
Sleep(500);
if (fShutdown)
return;
}
}
}
// Initiate network connections
int64 nStart = GetTime();
loop
@ -1358,6 +1348,76 @@ void ThreadOpenConnections2(void* parg)
}
}
void ThreadOpenAddedConnections(void* parg)
{
IMPLEMENT_RANDOMIZE_STACK(ThreadOpenAddedConnections(parg));
try
{
vnThreadsRunning[7]++;
ThreadOpenAddedConnections2(parg);
vnThreadsRunning[7]--;
}
catch (std::exception& e) {
vnThreadsRunning[7]--;
PrintException(&e, "ThreadOpenAddedConnections()");
} catch (...) {
vnThreadsRunning[7]--;
PrintException(NULL, "ThreadOpenAddedConnections()");
}
printf("ThreadOpenAddedConnections exiting\n");
}
void ThreadOpenAddedConnections2(void* parg)
{
printf("ThreadOpenAddedConnections started\n");
if (mapArgs.count("-addnode") == 0)
return;
vector<vector<CService> > vservAddressesToAdd(0);
BOOST_FOREACH(string& strAddNode, mapMultiArgs["-addnode"])
{
vector<CService> vservNode(0);
if(Lookup(strAddNode.c_str(), vservNode, GetDefaultPort(), fAllowDNS, 0))
{
vservAddressesToAdd.push_back(vservNode);
CRITICAL_BLOCK(cs_setservAddNodeAddresses)
BOOST_FOREACH(CService& serv, vservNode)
setservAddNodeAddresses.insert(serv);
}
}
loop
{
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 fAllowDNS)
CRITICAL_BLOCK(cs_vNodes)
BOOST_FOREACH(CNode* pnode, vNodes)
for (vector<vector<CService> >::iterator it = vservConnectAddresses.begin(); it != vservConnectAddresses.end(); it++)
BOOST_FOREACH(CService& addrNode, *(it))
if (pnode->addr == addrNode)
{
it = vservConnectAddresses.erase(it);
it--;
break;
}
BOOST_FOREACH(vector<CService>& vserv, vservConnectAddresses)
{
OpenNetworkConnection(CAddress(*(vserv.begin())));
Sleep(500);
if (fShutdown)
return;
}
if (fShutdown)
return;
vnThreadsRunning[7]--;
Sleep(120000); // Retry every 2 minutes
vnThreadsRunning[7]++;
if (fShutdown)
return;
}
}
bool OpenNetworkConnection(const CAddress& addrConnect)
{
//
@ -1634,6 +1694,10 @@ void StartNode(void* parg)
if (!CreateThread(ThreadSocketHandler, NULL))
printf("Error: CreateThread(ThreadSocketHandler) failed\n");
// Initiate outbound connections from -addnode
if (!CreateThread(ThreadOpenAddedConnections, NULL))
printf("Error: CreateThread(ThreadOpenAddedConnections) failed\n");
// Initiate outbound connections
if (!CreateThread(ThreadOpenConnections, NULL))
printf("Error: CreateThread(ThreadOpenConnections) failed\n");
@ -1652,7 +1716,7 @@ bool StopNode()
fShutdown = true;
nTransactionsUpdated++;
int64 nStart = GetTime();
while (vnThreadsRunning[0] > 0 || vnThreadsRunning[2] > 0 || vnThreadsRunning[3] > 0 || vnThreadsRunning[4] > 0
while (vnThreadsRunning[0] > 0 || vnThreadsRunning[2] > 0 || vnThreadsRunning[3] > 0 || vnThreadsRunning[4] > 0 || vnThreadsRunning[6] > 0 || vnThreadsRunning[7] > 0
#ifdef USE_UPNP
|| vnThreadsRunning[5] > 0
#endif
@ -1669,6 +1733,7 @@ bool StopNode()
if (vnThreadsRunning[4] > 0) printf("ThreadRPCServer still running\n");
if (fHaveUPnP && vnThreadsRunning[5] > 0) printf("ThreadMapPort still running\n");
if (vnThreadsRunning[6] > 0) printf("ThreadDNSAddressSeed still running\n");
if (vnThreadsRunning[7] > 0) printf("ThreadOpenAddedConnections still running\n");
while (vnThreadsRunning[2] > 0 || vnThreadsRunning[4] > 0)
Sleep(20);
Sleep(50);

18
src/netbase.cpp
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@ -96,7 +96,7 @@ bool LookupHostNumeric(const char *pszName, std::vector<CNetAddr>& vIP, int nMax
return LookupHost(pszName, vIP, nMaxSolutions, false);
}
bool Lookup(const char *pszName, CService& addr, int portDefault, bool fAllowLookup)
bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault, bool fAllowLookup, int nMaxSolutions)
{
if (pszName[0] == 0)
return false;
@ -130,10 +130,22 @@ bool Lookup(const char *pszName, CService& addr, int portDefault, bool fAllowLoo
}
std::vector<CNetAddr> vIP;
bool fRet = LookupIntern(pszHost, vIP, 1, fAllowLookup);
bool fRet = LookupIntern(pszHost, vIP, nMaxSolutions, fAllowLookup);
if (!fRet)
return false;
addr = CService(vIP[0], port);
vAddr.resize(vIP.size());
for (int i = 0; i < vIP.size(); i++)
vAddr[i] = CService(vIP[i], port);
return true;
}
bool Lookup(const char *pszName, CService& addr, int portDefault, bool fAllowLookup)
{
std::vector<CService> vService;
bool fRet = Lookup(pszName, vService, portDefault, fAllowLookup, 1);
if (!fRet)
return false;
addr = vService[0];
return true;
}

1
src/netbase.h
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@ -128,6 +128,7 @@ class CService : public CNetAddr
bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, int nMaxSolutions = 0, bool fAllowLookup = true);
bool LookupHostNumeric(const char *pszName, std::vector<CNetAddr>& vIP, int nMaxSolutions = 0);
bool Lookup(const char *pszName, CService& addr, int portDefault = 0, bool fAllowLookup = true);
bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault = 0, bool fAllowLookup = true, int nMaxSolutions = 0);
bool LookupNumeric(const char *pszName, CService& addr, int portDefault = 0);
bool ConnectSocket(const CService &addr, SOCKET& hSocketRet, int nTimeout = nConnectTimeout);