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net: Create CConnman to encapsulate p2p connections

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This commit is contained in:
Cory Fields 2016-04-16 14:47:18 -04:00
parent d93b14dc5d
commit cd16f48028
6 changed files with 112 additions and 54 deletions
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1
src/addrdb.h
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@ -14,6 +14,7 @@
class CSubNet;
class CAddrMan;
class CDataStream;
typedef enum BanReason
{

14
src/init.cpp
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@ -42,6 +42,7 @@
#endif
#include <stdint.h>
#include <stdio.h>
#include <memory>
#ifndef WIN32
#include <signal.h>
@ -70,6 +71,7 @@ static const bool DEFAULT_REST_ENABLE = false;
static const bool DEFAULT_DISABLE_SAFEMODE = false;
static const bool DEFAULT_STOPAFTERBLOCKIMPORT = false;
std::unique_ptr<CConnman> g_connman;
#if ENABLE_ZMQ
static CZMQNotificationInterface* pzmqNotificationInterface = NULL;
@ -197,7 +199,9 @@ void Shutdown()
if (pwalletMain)
pwalletMain->Flush(false);
#endif
StopNode();
StopNode(*g_connman);
g_connman.reset();
StopTorControl();
UnregisterNodeSignals(GetNodeSignals());
@ -1101,6 +1105,10 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
#endif // ENABLE_WALLET
// ********************************************************* Step 6: network initialization
assert(!g_connman);
g_connman = std::unique_ptr<CConnman>(new CConnman());
CConnman& connman = *g_connman;
RegisterNodeSignals(GetNodeSignals());
// sanitize comments per BIP-0014, format user agent and check total size
@ -1497,7 +1505,9 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
if (GetBoolArg("-listenonion", DEFAULT_LISTEN_ONION))
StartTorControl(threadGroup, scheduler);
StartNode(threadGroup, scheduler);
std::string strNodeError;
if(!StartNode(connman, threadGroup, scheduler, strNodeError))
return InitError(strNodeError);
// ********************************************************* Step 12: finished

113
src/net.cpp
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@ -65,13 +65,6 @@
namespace {
const int MAX_OUTBOUND_CONNECTIONS = 8;
const int MAX_FEELER_CONNECTIONS = 1;
struct ListenSocket {
SOCKET socket;
bool whitelisted;
ListenSocket(SOCKET _socket, bool _whitelisted) : socket(_socket), whitelisted(_whitelisted) {}
};
}
const static std::string NET_MESSAGE_COMMAND_OTHER = "*other*";
@ -1015,7 +1008,7 @@ static bool AttemptToEvictConnection() {
return false;
}
static void AcceptConnection(const ListenSocket& hListenSocket) {
void CConnman::AcceptConnection(const ListenSocket& hListenSocket) {
struct sockaddr_storage sockaddr;
socklen_t len = sizeof(sockaddr);
SOCKET hSocket = accept(hListenSocket.socket, (struct sockaddr*)&sockaddr, &len);
@ -1089,7 +1082,7 @@ static void AcceptConnection(const ListenSocket& hListenSocket) {
}
}
void ThreadSocketHandler()
void CConnman::ThreadSocketHandler()
{
unsigned int nPrevNodeCount = 0;
while (true)
@ -1497,7 +1490,7 @@ static std::string GetDNSHost(const CDNSSeedData& data, ServiceFlags* requiredSe
}
void ThreadDNSAddressSeed()
void CConnman::ThreadDNSAddressSeed()
{
// goal: only query DNS seeds if address need is acute
if ((addrman.size() > 0) &&
@ -1577,7 +1570,7 @@ void DumpData()
DumpBanlist();
}
void static ProcessOneShot()
void CConnman::ProcessOneShot()
{
std::string strDest;
{
@ -1595,7 +1588,7 @@ void static ProcessOneShot()
}
}
void ThreadOpenConnections()
void CConnman::ThreadOpenConnections()
{
// Connect to specific addresses
if (mapArgs.count("-connect") && mapMultiArgs["-connect"].size() > 0)
@ -1791,7 +1784,7 @@ std::vector<AddedNodeInfo> GetAddedNodeInfo()
return ret;
}
void ThreadOpenAddedConnections()
void CConnman::ThreadOpenAddedConnections()
{
{
LOCK(cs_vAddedNodes);
@ -1848,7 +1841,7 @@ bool OpenNetworkConnection(const CAddress& addrConnect, bool fCountFailure, CSem
}
void ThreadMessageHandler()
void CConnman::ThreadMessageHandler()
{
boost::mutex condition_mutex;
boost::unique_lock<boost::mutex> lock(condition_mutex);
@ -2064,7 +2057,11 @@ void static Discover(boost::thread_group& threadGroup)
#endif
}
void StartNode(boost::thread_group& threadGroup, CScheduler& scheduler)
CConnman::CConnman()
{
}
bool StartNode(CConnman& connman, boost::thread_group& threadGroup, CScheduler& scheduler, std::string& strNodeError)
{
uiInterface.InitMessage(_("Loading addresses..."));
// Load addresses from peers.dat
@ -2102,6 +2099,17 @@ void StartNode(boost::thread_group& threadGroup, CScheduler& scheduler)
fAddressesInitialized = true;
Discover(threadGroup);
bool ret = connman.Start(threadGroup, strNodeError);
// Dump network addresses
scheduler.scheduleEvery(DumpData, DUMP_ADDRESSES_INTERVAL);
return ret;
}
bool CConnman::Start(boost::thread_group& threadGroup, std::string& strNodeError)
{
if (semOutbound == NULL) {
// initialize semaphore
int nMaxOutbound = std::min((MAX_OUTBOUND_CONNECTIONS + MAX_FEELER_CONNECTIONS), nMaxConnections);
@ -2114,8 +2122,6 @@ void StartNode(boost::thread_group& threadGroup, CScheduler& scheduler)
pnodeLocalHost = new CNode(INVALID_SOCKET, CAddress(CService(local, 0), nLocalServices));
}
Discover(threadGroup);
//
// Start threads
//
@ -2123,34 +2129,30 @@ void StartNode(boost::thread_group& threadGroup, CScheduler& scheduler)
if (!GetBoolArg("-dnsseed", true))
LogPrintf("DNS seeding disabled\n");
else
threadGroup.create_thread(boost::bind(&TraceThread<void (*)()>, "dnsseed", &ThreadDNSAddressSeed));
threadGroup.create_thread(boost::bind(&TraceThread<boost::function<void()> >, "dnsseed", boost::function<void()>(boost::bind(&CConnman::ThreadDNSAddressSeed, this))));
// Map ports with UPnP
MapPort(GetBoolArg("-upnp", DEFAULT_UPNP));
// Send and receive from sockets, accept connections
threadGroup.create_thread(boost::bind(&TraceThread<void (*)()>, "net", &ThreadSocketHandler));
threadGroup.create_thread(boost::bind(&TraceThread<boost::function<void()> >, "net", boost::function<void()>(boost::bind(&CConnman::ThreadSocketHandler, this))));
// Initiate outbound connections from -addnode
threadGroup.create_thread(boost::bind(&TraceThread<void (*)()>, "addcon", &ThreadOpenAddedConnections));
threadGroup.create_thread(boost::bind(&TraceThread<boost::function<void()> >, "addcon", boost::function<void()>(boost::bind(&CConnman::ThreadOpenAddedConnections, this))));
// Initiate outbound connections
threadGroup.create_thread(boost::bind(&TraceThread<void (*)()>, "opencon", &ThreadOpenConnections));
threadGroup.create_thread(boost::bind(&TraceThread<boost::function<void()> >, "opencon", boost::function<void()>(boost::bind(&CConnman::ThreadOpenConnections, this))));
// Process messages
threadGroup.create_thread(boost::bind(&TraceThread<void (*)()>, "msghand", &ThreadMessageHandler));
threadGroup.create_thread(boost::bind(&TraceThread<boost::function<void()> >, "msghand", boost::function<void()>(boost::bind(&CConnman::ThreadMessageHandler, this))));
// Dump network addresses
scheduler.scheduleEvery(&DumpData, DUMP_ADDRESSES_INTERVAL);
return true;
}
bool StopNode()
bool StopNode(CConnman& connman)
{
LogPrintf("StopNode()\n");
MapPort(false);
if (semOutbound)
for (int i=0; i<(MAX_OUTBOUND_CONNECTIONS + MAX_FEELER_CONNECTIONS); i++)
semOutbound->post();
if (fAddressesInitialized)
{
@ -2158,6 +2160,7 @@ bool StopNode()
fAddressesInitialized = false;
}
connman.Stop();
return true;
}
@ -2168,28 +2171,6 @@ public:
~CNetCleanup()
{
// Close sockets
BOOST_FOREACH(CNode* pnode, vNodes)
if (pnode->hSocket != INVALID_SOCKET)
CloseSocket(pnode->hSocket);
BOOST_FOREACH(ListenSocket& hListenSocket, vhListenSocket)
if (hListenSocket.socket != INVALID_SOCKET)
if (!CloseSocket(hListenSocket.socket))
LogPrintf("CloseSocket(hListenSocket) failed with error %s\n", NetworkErrorString(WSAGetLastError()));
// clean up some globals (to help leak detection)
BOOST_FOREACH(CNode *pnode, vNodes)
delete pnode;
BOOST_FOREACH(CNode *pnode, vNodesDisconnected)
delete pnode;
vNodes.clear();
vNodesDisconnected.clear();
vhListenSocket.clear();
delete semOutbound;
semOutbound = NULL;
delete pnodeLocalHost;
pnodeLocalHost = NULL;
#ifdef WIN32
// Shutdown Windows Sockets
WSACleanup();
@ -2198,6 +2179,38 @@ public:
}
instance_of_cnetcleanup;
void CConnman::Stop()
{
if (semOutbound)
for (int i=0; i<(MAX_OUTBOUND_CONNECTIONS + MAX_FEELER_CONNECTIONS); i++)
semOutbound->post();
// Close sockets
BOOST_FOREACH(CNode* pnode, vNodes)
if (pnode->hSocket != INVALID_SOCKET)
CloseSocket(pnode->hSocket);
BOOST_FOREACH(ListenSocket& hListenSocket, vhListenSocket)
if (hListenSocket.socket != INVALID_SOCKET)
if (!CloseSocket(hListenSocket.socket))
LogPrintf("CloseSocket(hListenSocket) failed with error %s\n", NetworkErrorString(WSAGetLastError()));
// clean up some globals (to help leak detection)
BOOST_FOREACH(CNode *pnode, vNodes)
delete pnode;
BOOST_FOREACH(CNode *pnode, vNodesDisconnected)
delete pnode;
vNodes.clear();
vNodesDisconnected.clear();
vhListenSocket.clear();
delete semOutbound;
semOutbound = NULL;
delete pnodeLocalHost;
pnodeLocalHost = NULL;
}
CConnman::~CConnman()
{
}
void RelayTransaction(const CTransaction& tx)
{

30
src/net.h
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@ -21,6 +21,7 @@
#include <atomic>
#include <deque>
#include <stdint.h>
#include <memory>
#ifndef WIN32
#include <arpa/inet.h>
@ -93,11 +94,36 @@ CNode* FindNode(const std::string& addrName);
CNode* FindNode(const CService& ip);
CNode* FindNode(const NodeId id); //TODO: Remove this
bool OpenNetworkConnection(const CAddress& addrConnect, bool fCountFailure, CSemaphoreGrant *grantOutbound = NULL, const char *strDest = NULL, bool fOneShot = false, bool fFeeler = false);
struct ListenSocket {
SOCKET socket;
bool whitelisted;
ListenSocket(SOCKET socket_, bool whitelisted_) : socket(socket_), whitelisted(whitelisted_) {}
};
class CConnman
{
public:
CConnman();
~CConnman();
bool Start(boost::thread_group& threadGroup, std::string& strNodeError);
void Stop();
private:
void ThreadOpenAddedConnections();
void ProcessOneShot();
void ThreadOpenConnections();
void ThreadMessageHandler();
void AcceptConnection(const ListenSocket& hListenSocket);
void ThreadSocketHandler();
void ThreadDNSAddressSeed();
};
extern std::unique_ptr<CConnman> g_connman;
void MapPort(bool fUseUPnP);
unsigned short GetListenPort();
bool BindListenPort(const CService &bindAddr, std::string& strError, bool fWhitelisted = false);
void StartNode(boost::thread_group& threadGroup, CScheduler& scheduler);
bool StopNode();
bool StartNode(CConnman& connman, boost::thread_group& threadGroup, CScheduler& scheduler, std::string& strNodeError);
bool StopNode(CConnman& connman);
void SocketSendData(CNode *pnode);
struct CombinerAll

6
src/test/test_bitcoin.cpp
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@ -26,6 +26,8 @@
#include <boost/test/unit_test.hpp>
#include <boost/thread.hpp>
std::unique_ptr<CConnman> g_connman;
extern bool fPrintToConsole;
extern void noui_connect();
@ -43,6 +45,7 @@ BasicTestingSetup::BasicTestingSetup(const std::string& chainName)
BasicTestingSetup::~BasicTestingSetup()
{
ECC_Stop();
g_connman.reset();
}
TestingSetup::TestingSetup(const std::string& chainName) : BasicTestingSetup(chainName)
@ -50,6 +53,7 @@ TestingSetup::TestingSetup(const std::string& chainName) : BasicTestingSetup(cha
const CChainParams& chainparams = Params();
// Ideally we'd move all the RPC tests to the functional testing framework
// instead of unit tests, but for now we need these here.
RegisterAllCoreRPCCommands(tableRPC);
ClearDatadirCache();
pathTemp = GetTempPath() / strprintf("test_bitcoin_%lu_%i", (unsigned long)GetTime(), (int)(GetRand(100000)));
@ -68,6 +72,8 @@ TestingSetup::TestingSetup(const std::string& chainName) : BasicTestingSetup(cha
nScriptCheckThreads = 3;
for (int i=0; i < nScriptCheckThreads-1; i++)
threadGroup.create_thread(&ThreadScriptCheck);
g_connman = std::unique_ptr<CConnman>(new CConnman());
connman = g_connman.get();
RegisterNodeSignals(GetNodeSignals());
}

2
src/test/test_bitcoin.h
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@ -27,10 +27,12 @@ struct BasicTestingSetup {
/** Testing setup that configures a complete environment.
* Included are data directory, coins database, script check threads setup.
*/
class CConnman;
struct TestingSetup: public BasicTestingSetup {
CCoinsViewDB *pcoinsdbview;
boost::filesystem::path pathTemp;
boost::thread_group threadGroup;
CConnman* connman;
TestingSetup(const std::string& chainName = CBaseChainParams::MAIN);
~TestingSetup();