mirror of https://github.com/bitcoin/bitcoin
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1050 lines
26 KiB
1050 lines
26 KiB
// 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.
|
|
#ifndef BITCOIN_NET_H
|
|
#define BITCOIN_NET_H
|
|
|
|
#include <deque>
|
|
#include <boost/array.hpp>
|
|
#include <openssl/rand.h>
|
|
|
|
#ifndef __WXMSW__
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
|
|
class CMessageHeader;
|
|
class CAddress;
|
|
class CInv;
|
|
class CRequestTracker;
|
|
class CNode;
|
|
class CBlockIndex;
|
|
extern int nBestHeight;
|
|
|
|
|
|
|
|
inline unsigned short GetDefaultPort() { return fTestNet ? 18333 : 8333; }
|
|
static const unsigned int PUBLISH_HOPS = 5;
|
|
enum
|
|
{
|
|
NODE_NETWORK = (1 << 0),
|
|
};
|
|
|
|
|
|
|
|
|
|
bool ConnectSocket(const CAddress& addrConnect, SOCKET& hSocketRet);
|
|
bool Lookup(const char *pszName, std::vector<CAddress>& vaddr, int nServices, int nMaxSolutions, bool fAllowLookup = false, int portDefault = 0, bool fAllowPort = false);
|
|
bool Lookup(const char *pszName, CAddress& addr, int nServices, bool fAllowLookup = false, int portDefault = 0, bool fAllowPort = false);
|
|
bool GetMyExternalIP(unsigned int& ipRet);
|
|
bool AddAddress(CAddress addr, int64 nTimePenalty=0);
|
|
void AddressCurrentlyConnected(const CAddress& addr);
|
|
CNode* FindNode(unsigned int ip);
|
|
CNode* ConnectNode(CAddress addrConnect, int64 nTimeout=0);
|
|
void AbandonRequests(void (*fn)(void*, CDataStream&), void* param1);
|
|
bool AnySubscribed(unsigned int nChannel);
|
|
void MapPort(bool fMapPort);
|
|
void DNSAddressSeed();
|
|
bool BindListenPort(std::string& strError=REF(std::string()));
|
|
void StartNode(void* parg);
|
|
bool StopNode();
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
//
|
|
// Message header
|
|
// (4) message start
|
|
// (12) command
|
|
// (4) size
|
|
// (4) checksum
|
|
|
|
extern char pchMessageStart[4];
|
|
|
|
class CMessageHeader
|
|
{
|
|
public:
|
|
enum { COMMAND_SIZE=12 };
|
|
char pchMessageStart[sizeof(::pchMessageStart)];
|
|
char pchCommand[COMMAND_SIZE];
|
|
unsigned int nMessageSize;
|
|
unsigned int nChecksum;
|
|
|
|
CMessageHeader()
|
|
{
|
|
memcpy(pchMessageStart, ::pchMessageStart, sizeof(pchMessageStart));
|
|
memset(pchCommand, 0, sizeof(pchCommand));
|
|
pchCommand[1] = 1;
|
|
nMessageSize = -1;
|
|
nChecksum = 0;
|
|
}
|
|
|
|
CMessageHeader(const char* pszCommand, unsigned int nMessageSizeIn)
|
|
{
|
|
memcpy(pchMessageStart, ::pchMessageStart, sizeof(pchMessageStart));
|
|
strncpy(pchCommand, pszCommand, COMMAND_SIZE);
|
|
nMessageSize = nMessageSizeIn;
|
|
nChecksum = 0;
|
|
}
|
|
|
|
IMPLEMENT_SERIALIZE
|
|
(
|
|
READWRITE(FLATDATA(pchMessageStart));
|
|
READWRITE(FLATDATA(pchCommand));
|
|
READWRITE(nMessageSize);
|
|
if (nVersion >= 209)
|
|
READWRITE(nChecksum);
|
|
)
|
|
|
|
std::string GetCommand()
|
|
{
|
|
if (pchCommand[COMMAND_SIZE-1] == 0)
|
|
return std::string(pchCommand, pchCommand + strlen(pchCommand));
|
|
else
|
|
return std::string(pchCommand, pchCommand + COMMAND_SIZE);
|
|
}
|
|
|
|
bool IsValid()
|
|
{
|
|
// Check start string
|
|
if (memcmp(pchMessageStart, ::pchMessageStart, sizeof(pchMessageStart)) != 0)
|
|
return false;
|
|
|
|
// Check the command string for errors
|
|
for (char* p1 = pchCommand; p1 < pchCommand + COMMAND_SIZE; p1++)
|
|
{
|
|
if (*p1 == 0)
|
|
{
|
|
// Must be all zeros after the first zero
|
|
for (; p1 < pchCommand + COMMAND_SIZE; p1++)
|
|
if (*p1 != 0)
|
|
return false;
|
|
}
|
|
else if (*p1 < ' ' || *p1 > 0x7E)
|
|
return false;
|
|
}
|
|
|
|
// Message size
|
|
if (nMessageSize > MAX_SIZE)
|
|
{
|
|
printf("CMessageHeader::IsValid() : (%s, %u bytes) nMessageSize > MAX_SIZE\n", GetCommand().c_str(), nMessageSize);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static const unsigned char pchIPv4[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff };
|
|
|
|
class CAddress
|
|
{
|
|
public:
|
|
uint64 nServices;
|
|
unsigned char pchReserved[12];
|
|
unsigned int ip;
|
|
unsigned short port;
|
|
|
|
// disk and network only
|
|
unsigned int nTime;
|
|
|
|
// memory only
|
|
unsigned int nLastTry;
|
|
|
|
CAddress()
|
|
{
|
|
Init();
|
|
}
|
|
|
|
CAddress(unsigned int ipIn, unsigned short portIn=0, uint64 nServicesIn=NODE_NETWORK)
|
|
{
|
|
Init();
|
|
ip = ipIn;
|
|
port = htons(portIn == 0 ? GetDefaultPort() : portIn);
|
|
nServices = nServicesIn;
|
|
}
|
|
|
|
explicit CAddress(const struct sockaddr_in& sockaddr, uint64 nServicesIn=NODE_NETWORK)
|
|
{
|
|
Init();
|
|
ip = sockaddr.sin_addr.s_addr;
|
|
port = sockaddr.sin_port;
|
|
nServices = nServicesIn;
|
|
}
|
|
|
|
explicit CAddress(const char* pszIn, int portIn, bool fNameLookup = false, uint64 nServicesIn=NODE_NETWORK)
|
|
{
|
|
Init();
|
|
Lookup(pszIn, *this, nServicesIn, fNameLookup, portIn);
|
|
}
|
|
|
|
explicit CAddress(const char* pszIn, bool fNameLookup = false, uint64 nServicesIn=NODE_NETWORK)
|
|
{
|
|
Init();
|
|
Lookup(pszIn, *this, nServicesIn, fNameLookup, 0, true);
|
|
}
|
|
|
|
explicit CAddress(std::string strIn, int portIn, bool fNameLookup = false, uint64 nServicesIn=NODE_NETWORK)
|
|
{
|
|
Init();
|
|
Lookup(strIn.c_str(), *this, nServicesIn, fNameLookup, portIn);
|
|
}
|
|
|
|
explicit CAddress(std::string strIn, bool fNameLookup = false, uint64 nServicesIn=NODE_NETWORK)
|
|
{
|
|
Init();
|
|
Lookup(strIn.c_str(), *this, nServicesIn, fNameLookup, 0, true);
|
|
}
|
|
|
|
void Init()
|
|
{
|
|
nServices = NODE_NETWORK;
|
|
memcpy(pchReserved, pchIPv4, sizeof(pchReserved));
|
|
ip = INADDR_NONE;
|
|
port = htons(GetDefaultPort());
|
|
nTime = 100000000;
|
|
nLastTry = 0;
|
|
}
|
|
|
|
IMPLEMENT_SERIALIZE
|
|
(
|
|
if (fRead)
|
|
const_cast<CAddress*>(this)->Init();
|
|
if (nType & SER_DISK)
|
|
READWRITE(nVersion);
|
|
if ((nType & SER_DISK) || (nVersion >= 31402 && !(nType & SER_GETHASH)))
|
|
READWRITE(nTime);
|
|
READWRITE(nServices);
|
|
READWRITE(FLATDATA(pchReserved)); // for IPv6
|
|
READWRITE(ip);
|
|
READWRITE(port);
|
|
)
|
|
|
|
friend inline bool operator==(const CAddress& a, const CAddress& b)
|
|
{
|
|
return (memcmp(a.pchReserved, b.pchReserved, sizeof(a.pchReserved)) == 0 &&
|
|
a.ip == b.ip &&
|
|
a.port == b.port);
|
|
}
|
|
|
|
friend inline bool operator!=(const CAddress& a, const CAddress& b)
|
|
{
|
|
return (!(a == b));
|
|
}
|
|
|
|
friend inline bool operator<(const CAddress& a, const CAddress& b)
|
|
{
|
|
int ret = memcmp(a.pchReserved, b.pchReserved, sizeof(a.pchReserved));
|
|
if (ret < 0)
|
|
return true;
|
|
else if (ret == 0)
|
|
{
|
|
if (ntohl(a.ip) < ntohl(b.ip))
|
|
return true;
|
|
else if (a.ip == b.ip)
|
|
return ntohs(a.port) < ntohs(b.port);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
std::vector<unsigned char> GetKey() const
|
|
{
|
|
CDataStream ss;
|
|
ss.reserve(18);
|
|
ss << FLATDATA(pchReserved) << ip << port;
|
|
|
|
#if defined(_MSC_VER) && _MSC_VER < 1300
|
|
return std::vector<unsigned char>((unsigned char*)&ss.begin()[0], (unsigned char*)&ss.end()[0]);
|
|
#else
|
|
return std::vector<unsigned char>(ss.begin(), ss.end());
|
|
#endif
|
|
}
|
|
|
|
struct sockaddr_in GetSockAddr() const
|
|
{
|
|
struct sockaddr_in sockaddr;
|
|
memset(&sockaddr, 0, sizeof(sockaddr));
|
|
sockaddr.sin_family = AF_INET;
|
|
sockaddr.sin_addr.s_addr = ip;
|
|
sockaddr.sin_port = port;
|
|
return sockaddr;
|
|
}
|
|
|
|
bool IsIPv4() const
|
|
{
|
|
return (memcmp(pchReserved, pchIPv4, sizeof(pchIPv4)) == 0);
|
|
}
|
|
|
|
bool IsRoutable() const
|
|
{
|
|
return IsValid() &&
|
|
!(GetByte(3) == 10 ||
|
|
(GetByte(3) == 192 && GetByte(2) == 168) ||
|
|
GetByte(3) == 127 ||
|
|
GetByte(3) == 0);
|
|
}
|
|
|
|
bool IsValid() const
|
|
{
|
|
// Clean up 3-byte shifted addresses caused by garbage in size field
|
|
// of addr messages from versions before 0.2.9 checksum.
|
|
// Two consecutive addr messages look like this:
|
|
// header20 vectorlen3 addr26 addr26 addr26 header20 vectorlen3 addr26 addr26 addr26...
|
|
// so if the first length field is garbled, it reads the second batch
|
|
// of addr misaligned by 3 bytes.
|
|
if (memcmp(pchReserved, pchIPv4+3, sizeof(pchIPv4)-3) == 0)
|
|
return false;
|
|
|
|
return (ip != 0 && ip != INADDR_NONE && port != htons(USHRT_MAX));
|
|
}
|
|
|
|
unsigned char GetByte(int n) const
|
|
{
|
|
return ((unsigned char*)&ip)[3-n];
|
|
}
|
|
|
|
std::string ToStringIPPort() const
|
|
{
|
|
return strprintf("%u.%u.%u.%u:%u", GetByte(3), GetByte(2), GetByte(1), GetByte(0), ntohs(port));
|
|
}
|
|
|
|
std::string ToStringIP() const
|
|
{
|
|
return strprintf("%u.%u.%u.%u", GetByte(3), GetByte(2), GetByte(1), GetByte(0));
|
|
}
|
|
|
|
std::string ToStringPort() const
|
|
{
|
|
return strprintf("%u", ntohs(port));
|
|
}
|
|
|
|
std::string ToString() const
|
|
{
|
|
return strprintf("%u.%u.%u.%u:%u", GetByte(3), GetByte(2), GetByte(1), GetByte(0), ntohs(port));
|
|
}
|
|
|
|
void print() const
|
|
{
|
|
printf("CAddress(%s)\n", ToString().c_str());
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
enum
|
|
{
|
|
MSG_TX = 1,
|
|
MSG_BLOCK,
|
|
};
|
|
|
|
static const char* ppszTypeName[] =
|
|
{
|
|
"ERROR",
|
|
"tx",
|
|
"block",
|
|
};
|
|
|
|
class CInv
|
|
{
|
|
public:
|
|
int type;
|
|
uint256 hash;
|
|
|
|
CInv()
|
|
{
|
|
type = 0;
|
|
hash = 0;
|
|
}
|
|
|
|
CInv(int typeIn, const uint256& hashIn)
|
|
{
|
|
type = typeIn;
|
|
hash = hashIn;
|
|
}
|
|
|
|
CInv(const std::string& strType, const uint256& hashIn)
|
|
{
|
|
int i;
|
|
for (i = 1; i < ARRAYLEN(ppszTypeName); i++)
|
|
{
|
|
if (strType == ppszTypeName[i])
|
|
{
|
|
type = i;
|
|
break;
|
|
}
|
|
}
|
|
if (i == ARRAYLEN(ppszTypeName))
|
|
throw std::out_of_range(strprintf("CInv::CInv(string, uint256) : unknown type '%s'", strType.c_str()));
|
|
hash = hashIn;
|
|
}
|
|
|
|
IMPLEMENT_SERIALIZE
|
|
(
|
|
READWRITE(type);
|
|
READWRITE(hash);
|
|
)
|
|
|
|
friend inline bool operator<(const CInv& a, const CInv& b)
|
|
{
|
|
return (a.type < b.type || (a.type == b.type && a.hash < b.hash));
|
|
}
|
|
|
|
bool IsKnownType() const
|
|
{
|
|
return (type >= 1 && type < ARRAYLEN(ppszTypeName));
|
|
}
|
|
|
|
const char* GetCommand() const
|
|
{
|
|
if (!IsKnownType())
|
|
throw std::out_of_range(strprintf("CInv::GetCommand() : type=%d unknown type", type));
|
|
return ppszTypeName[type];
|
|
}
|
|
|
|
std::string ToString() const
|
|
{
|
|
return strprintf("%s %s", GetCommand(), hash.ToString().substr(0,20).c_str());
|
|
}
|
|
|
|
void print() const
|
|
{
|
|
printf("CInv(%s)\n", ToString().c_str());
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
class CRequestTracker
|
|
{
|
|
public:
|
|
void (*fn)(void*, CDataStream&);
|
|
void* param1;
|
|
|
|
explicit CRequestTracker(void (*fnIn)(void*, CDataStream&)=NULL, void* param1In=NULL)
|
|
{
|
|
fn = fnIn;
|
|
param1 = param1In;
|
|
}
|
|
|
|
bool IsNull()
|
|
{
|
|
return fn == NULL;
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
extern bool fClient;
|
|
extern bool fAllowDNS;
|
|
extern uint64 nLocalServices;
|
|
extern CAddress addrLocalHost;
|
|
extern CNode* pnodeLocalHost;
|
|
extern uint64 nLocalHostNonce;
|
|
extern boost::array<int, 10> vnThreadsRunning;
|
|
extern SOCKET hListenSocket;
|
|
|
|
extern std::vector<CNode*> vNodes;
|
|
extern CCriticalSection cs_vNodes;
|
|
extern std::map<std::vector<unsigned char>, CAddress> mapAddresses;
|
|
extern CCriticalSection cs_mapAddresses;
|
|
extern std::map<CInv, CDataStream> mapRelay;
|
|
extern std::deque<std::pair<int64, CInv> > vRelayExpiration;
|
|
extern CCriticalSection cs_mapRelay;
|
|
extern std::map<CInv, int64> mapAlreadyAskedFor;
|
|
|
|
// Settings
|
|
extern int fUseProxy;
|
|
extern CAddress addrProxy;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
class CNode
|
|
{
|
|
public:
|
|
// socket
|
|
uint64 nServices;
|
|
SOCKET hSocket;
|
|
CDataStream vSend;
|
|
CDataStream vRecv;
|
|
CCriticalSection cs_vSend;
|
|
CCriticalSection cs_vRecv;
|
|
int64 nLastSend;
|
|
int64 nLastRecv;
|
|
int64 nLastSendEmpty;
|
|
int64 nTimeConnected;
|
|
unsigned int nHeaderStart;
|
|
unsigned int nMessageStart;
|
|
CAddress addr;
|
|
int nVersion;
|
|
std::string strSubVer;
|
|
bool fClient;
|
|
bool fInbound;
|
|
bool fNetworkNode;
|
|
bool fSuccessfullyConnected;
|
|
bool fDisconnect;
|
|
protected:
|
|
int nRefCount;
|
|
public:
|
|
int64 nReleaseTime;
|
|
std::map<uint256, CRequestTracker> mapRequests;
|
|
CCriticalSection cs_mapRequests;
|
|
uint256 hashContinue;
|
|
CBlockIndex* pindexLastGetBlocksBegin;
|
|
uint256 hashLastGetBlocksEnd;
|
|
int nStartingHeight;
|
|
|
|
// flood relay
|
|
std::vector<CAddress> vAddrToSend;
|
|
std::set<CAddress> setAddrKnown;
|
|
bool fGetAddr;
|
|
std::set<uint256> setKnown;
|
|
|
|
// inventory based relay
|
|
std::set<CInv> setInventoryKnown;
|
|
std::vector<CInv> vInventoryToSend;
|
|
CCriticalSection cs_inventory;
|
|
std::multimap<int64, CInv> mapAskFor;
|
|
|
|
// publish and subscription
|
|
std::vector<char> vfSubscribe;
|
|
|
|
|
|
CNode(SOCKET hSocketIn, CAddress addrIn, bool fInboundIn=false)
|
|
{
|
|
nServices = 0;
|
|
hSocket = hSocketIn;
|
|
vSend.SetType(SER_NETWORK);
|
|
vSend.SetVersion(0);
|
|
vRecv.SetType(SER_NETWORK);
|
|
vRecv.SetVersion(0);
|
|
// Version 0.2 obsoletes 20 Feb 2012
|
|
if (GetTime() > 1329696000)
|
|
{
|
|
vSend.SetVersion(209);
|
|
vRecv.SetVersion(209);
|
|
}
|
|
nLastSend = 0;
|
|
nLastRecv = 0;
|
|
nLastSendEmpty = GetTime();
|
|
nTimeConnected = GetTime();
|
|
nHeaderStart = -1;
|
|
nMessageStart = -1;
|
|
addr = addrIn;
|
|
nVersion = 0;
|
|
strSubVer = "";
|
|
fClient = false; // set by version message
|
|
fInbound = fInboundIn;
|
|
fNetworkNode = false;
|
|
fSuccessfullyConnected = false;
|
|
fDisconnect = false;
|
|
nRefCount = 0;
|
|
nReleaseTime = 0;
|
|
hashContinue = 0;
|
|
pindexLastGetBlocksBegin = 0;
|
|
hashLastGetBlocksEnd = 0;
|
|
nStartingHeight = -1;
|
|
fGetAddr = false;
|
|
vfSubscribe.assign(256, false);
|
|
|
|
// Be shy and don't send version until we hear
|
|
if (!fInbound)
|
|
PushVersion();
|
|
}
|
|
|
|
~CNode()
|
|
{
|
|
if (hSocket != INVALID_SOCKET)
|
|
{
|
|
closesocket(hSocket);
|
|
hSocket = INVALID_SOCKET;
|
|
}
|
|
}
|
|
|
|
private:
|
|
CNode(const CNode&);
|
|
void operator=(const CNode&);
|
|
public:
|
|
|
|
|
|
int GetRefCount()
|
|
{
|
|
return std::max(nRefCount, 0) + (GetTime() < nReleaseTime ? 1 : 0);
|
|
}
|
|
|
|
CNode* AddRef(int64 nTimeout=0)
|
|
{
|
|
if (nTimeout != 0)
|
|
nReleaseTime = std::max(nReleaseTime, GetTime() + nTimeout);
|
|
else
|
|
nRefCount++;
|
|
return this;
|
|
}
|
|
|
|
void Release()
|
|
{
|
|
nRefCount--;
|
|
}
|
|
|
|
|
|
|
|
void AddAddressKnown(const CAddress& addr)
|
|
{
|
|
setAddrKnown.insert(addr);
|
|
}
|
|
|
|
void PushAddress(const CAddress& addr)
|
|
{
|
|
// Known checking here is only to save space from duplicates.
|
|
// SendMessages will filter it again for knowns that were added
|
|
// after addresses were pushed.
|
|
if (addr.IsValid() && !setAddrKnown.count(addr))
|
|
vAddrToSend.push_back(addr);
|
|
}
|
|
|
|
|
|
void AddInventoryKnown(const CInv& inv)
|
|
{
|
|
CRITICAL_BLOCK(cs_inventory)
|
|
setInventoryKnown.insert(inv);
|
|
}
|
|
|
|
void PushInventory(const CInv& inv)
|
|
{
|
|
CRITICAL_BLOCK(cs_inventory)
|
|
if (!setInventoryKnown.count(inv))
|
|
vInventoryToSend.push_back(inv);
|
|
}
|
|
|
|
void AskFor(const CInv& inv)
|
|
{
|
|
// We're using mapAskFor as a priority queue,
|
|
// the key is the earliest time the request can be sent
|
|
int64& nRequestTime = mapAlreadyAskedFor[inv];
|
|
printf("askfor %s %"PRI64d"\n", inv.ToString().c_str(), nRequestTime);
|
|
|
|
// Make sure not to reuse time indexes to keep things in the same order
|
|
int64 nNow = (GetTime() - 1) * 1000000;
|
|
static int64 nLastTime;
|
|
nLastTime = nNow = std::max(nNow, ++nLastTime);
|
|
|
|
// Each retry is 2 minutes after the last
|
|
nRequestTime = std::max(nRequestTime + 2 * 60 * 1000000, nNow);
|
|
mapAskFor.insert(std::make_pair(nRequestTime, inv));
|
|
}
|
|
|
|
|
|
|
|
void BeginMessage(const char* pszCommand)
|
|
{
|
|
cs_vSend.Enter();
|
|
if (nHeaderStart != -1)
|
|
AbortMessage();
|
|
nHeaderStart = vSend.size();
|
|
vSend << CMessageHeader(pszCommand, 0);
|
|
nMessageStart = vSend.size();
|
|
if (fDebug)
|
|
printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
|
|
printf("sending: %s ", pszCommand);
|
|
}
|
|
|
|
void AbortMessage()
|
|
{
|
|
if (nHeaderStart == -1)
|
|
return;
|
|
vSend.resize(nHeaderStart);
|
|
nHeaderStart = -1;
|
|
nMessageStart = -1;
|
|
cs_vSend.Leave();
|
|
printf("(aborted)\n");
|
|
}
|
|
|
|
void EndMessage()
|
|
{
|
|
if (mapArgs.count("-dropmessagestest") && GetRand(atoi(mapArgs["-dropmessagestest"])) == 0)
|
|
{
|
|
printf("dropmessages DROPPING SEND MESSAGE\n");
|
|
AbortMessage();
|
|
return;
|
|
}
|
|
|
|
if (nHeaderStart == -1)
|
|
return;
|
|
|
|
// Set the size
|
|
unsigned int nSize = vSend.size() - nMessageStart;
|
|
memcpy((char*)&vSend[nHeaderStart] + offsetof(CMessageHeader, nMessageSize), &nSize, sizeof(nSize));
|
|
|
|
// Set the checksum
|
|
if (vSend.GetVersion() >= 209)
|
|
{
|
|
uint256 hash = Hash(vSend.begin() + nMessageStart, vSend.end());
|
|
unsigned int nChecksum = 0;
|
|
memcpy(&nChecksum, &hash, sizeof(nChecksum));
|
|
assert(nMessageStart - nHeaderStart >= offsetof(CMessageHeader, nChecksum) + sizeof(nChecksum));
|
|
memcpy((char*)&vSend[nHeaderStart] + offsetof(CMessageHeader, nChecksum), &nChecksum, sizeof(nChecksum));
|
|
}
|
|
|
|
printf("(%d bytes) ", nSize);
|
|
printf("\n");
|
|
|
|
nHeaderStart = -1;
|
|
nMessageStart = -1;
|
|
cs_vSend.Leave();
|
|
}
|
|
|
|
void EndMessageAbortIfEmpty()
|
|
{
|
|
if (nHeaderStart == -1)
|
|
return;
|
|
int nSize = vSend.size() - nMessageStart;
|
|
if (nSize > 0)
|
|
EndMessage();
|
|
else
|
|
AbortMessage();
|
|
}
|
|
|
|
|
|
|
|
void PushVersion()
|
|
{
|
|
/// when NTP implemented, change to just nTime = GetAdjustedTime()
|
|
int64 nTime = (fInbound ? GetAdjustedTime() : GetTime());
|
|
CAddress addrYou = (fUseProxy ? CAddress("0.0.0.0") : addr);
|
|
CAddress addrMe = (fUseProxy ? CAddress("0.0.0.0") : addrLocalHost);
|
|
RAND_bytes((unsigned char*)&nLocalHostNonce, sizeof(nLocalHostNonce));
|
|
PushMessage("version", VERSION, nLocalServices, nTime, addrYou, addrMe,
|
|
nLocalHostNonce, std::string(pszSubVer), nBestHeight);
|
|
}
|
|
|
|
|
|
|
|
|
|
void PushMessage(const char* pszCommand)
|
|
{
|
|
try
|
|
{
|
|
BeginMessage(pszCommand);
|
|
EndMessage();
|
|
}
|
|
catch (...)
|
|
{
|
|
AbortMessage();
|
|
throw;
|
|
}
|
|
}
|
|
|
|
template<typename T1>
|
|
void PushMessage(const char* pszCommand, const T1& a1)
|
|
{
|
|
try
|
|
{
|
|
BeginMessage(pszCommand);
|
|
vSend << a1;
|
|
EndMessage();
|
|
}
|
|
catch (...)
|
|
{
|
|
AbortMessage();
|
|
throw;
|
|
}
|
|
}
|
|
|
|
template<typename T1, typename T2>
|
|
void PushMessage(const char* pszCommand, const T1& a1, const T2& a2)
|
|
{
|
|
try
|
|
{
|
|
BeginMessage(pszCommand);
|
|
vSend << a1 << a2;
|
|
EndMessage();
|
|
}
|
|
catch (...)
|
|
{
|
|
AbortMessage();
|
|
throw;
|
|
}
|
|
}
|
|
|
|
template<typename T1, typename T2, typename T3>
|
|
void PushMessage(const char* pszCommand, const T1& a1, const T2& a2, const T3& a3)
|
|
{
|
|
try
|
|
{
|
|
BeginMessage(pszCommand);
|
|
vSend << a1 << a2 << a3;
|
|
EndMessage();
|
|
}
|
|
catch (...)
|
|
{
|
|
AbortMessage();
|
|
throw;
|
|
}
|
|
}
|
|
|
|
template<typename T1, typename T2, typename T3, typename T4>
|
|
void PushMessage(const char* pszCommand, const T1& a1, const T2& a2, const T3& a3, const T4& a4)
|
|
{
|
|
try
|
|
{
|
|
BeginMessage(pszCommand);
|
|
vSend << a1 << a2 << a3 << a4;
|
|
EndMessage();
|
|
}
|
|
catch (...)
|
|
{
|
|
AbortMessage();
|
|
throw;
|
|
}
|
|
}
|
|
|
|
template<typename T1, typename T2, typename T3, typename T4, typename T5>
|
|
void PushMessage(const char* pszCommand, const T1& a1, const T2& a2, const T3& a3, const T4& a4, const T5& a5)
|
|
{
|
|
try
|
|
{
|
|
BeginMessage(pszCommand);
|
|
vSend << a1 << a2 << a3 << a4 << a5;
|
|
EndMessage();
|
|
}
|
|
catch (...)
|
|
{
|
|
AbortMessage();
|
|
throw;
|
|
}
|
|
}
|
|
|
|
template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6>
|
|
void PushMessage(const char* pszCommand, const T1& a1, const T2& a2, const T3& a3, const T4& a4, const T5& a5, const T6& a6)
|
|
{
|
|
try
|
|
{
|
|
BeginMessage(pszCommand);
|
|
vSend << a1 << a2 << a3 << a4 << a5 << a6;
|
|
EndMessage();
|
|
}
|
|
catch (...)
|
|
{
|
|
AbortMessage();
|
|
throw;
|
|
}
|
|
}
|
|
|
|
template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7>
|
|
void PushMessage(const char* pszCommand, const T1& a1, const T2& a2, const T3& a3, const T4& a4, const T5& a5, const T6& a6, const T7& a7)
|
|
{
|
|
try
|
|
{
|
|
BeginMessage(pszCommand);
|
|
vSend << a1 << a2 << a3 << a4 << a5 << a6 << a7;
|
|
EndMessage();
|
|
}
|
|
catch (...)
|
|
{
|
|
AbortMessage();
|
|
throw;
|
|
}
|
|
}
|
|
|
|
template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8>
|
|
void PushMessage(const char* pszCommand, const T1& a1, const T2& a2, const T3& a3, const T4& a4, const T5& a5, const T6& a6, const T7& a7, const T8& a8)
|
|
{
|
|
try
|
|
{
|
|
BeginMessage(pszCommand);
|
|
vSend << a1 << a2 << a3 << a4 << a5 << a6 << a7 << a8;
|
|
EndMessage();
|
|
}
|
|
catch (...)
|
|
{
|
|
AbortMessage();
|
|
throw;
|
|
}
|
|
}
|
|
|
|
template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename T9>
|
|
void PushMessage(const char* pszCommand, const T1& a1, const T2& a2, const T3& a3, const T4& a4, const T5& a5, const T6& a6, const T7& a7, const T8& a8, const T9& a9)
|
|
{
|
|
try
|
|
{
|
|
BeginMessage(pszCommand);
|
|
vSend << a1 << a2 << a3 << a4 << a5 << a6 << a7 << a8 << a9;
|
|
EndMessage();
|
|
}
|
|
catch (...)
|
|
{
|
|
AbortMessage();
|
|
throw;
|
|
}
|
|
}
|
|
|
|
|
|
void PushRequest(const char* pszCommand,
|
|
void (*fn)(void*, CDataStream&), void* param1)
|
|
{
|
|
uint256 hashReply;
|
|
RAND_bytes((unsigned char*)&hashReply, sizeof(hashReply));
|
|
|
|
CRITICAL_BLOCK(cs_mapRequests)
|
|
mapRequests[hashReply] = CRequestTracker(fn, param1);
|
|
|
|
PushMessage(pszCommand, hashReply);
|
|
}
|
|
|
|
template<typename T1>
|
|
void PushRequest(const char* pszCommand, const T1& a1,
|
|
void (*fn)(void*, CDataStream&), void* param1)
|
|
{
|
|
uint256 hashReply;
|
|
RAND_bytes((unsigned char*)&hashReply, sizeof(hashReply));
|
|
|
|
CRITICAL_BLOCK(cs_mapRequests)
|
|
mapRequests[hashReply] = CRequestTracker(fn, param1);
|
|
|
|
PushMessage(pszCommand, hashReply, a1);
|
|
}
|
|
|
|
template<typename T1, typename T2>
|
|
void PushRequest(const char* pszCommand, const T1& a1, const T2& a2,
|
|
void (*fn)(void*, CDataStream&), void* param1)
|
|
{
|
|
uint256 hashReply;
|
|
RAND_bytes((unsigned char*)&hashReply, sizeof(hashReply));
|
|
|
|
CRITICAL_BLOCK(cs_mapRequests)
|
|
mapRequests[hashReply] = CRequestTracker(fn, param1);
|
|
|
|
PushMessage(pszCommand, hashReply, a1, a2);
|
|
}
|
|
|
|
|
|
|
|
void PushGetBlocks(CBlockIndex* pindexBegin, uint256 hashEnd);
|
|
bool IsSubscribed(unsigned int nChannel);
|
|
void Subscribe(unsigned int nChannel, unsigned int nHops=0);
|
|
void CancelSubscribe(unsigned int nChannel);
|
|
void CloseSocketDisconnect();
|
|
void Cleanup();
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
inline void RelayInventory(const CInv& inv)
|
|
{
|
|
// Put on lists to offer to the other nodes
|
|
CRITICAL_BLOCK(cs_vNodes)
|
|
BOOST_FOREACH(CNode* pnode, vNodes)
|
|
pnode->PushInventory(inv);
|
|
}
|
|
|
|
template<typename T>
|
|
void RelayMessage(const CInv& inv, const T& a)
|
|
{
|
|
CDataStream ss(SER_NETWORK);
|
|
ss.reserve(10000);
|
|
ss << a;
|
|
RelayMessage(inv, ss);
|
|
}
|
|
|
|
template<>
|
|
inline void RelayMessage<>(const CInv& inv, const CDataStream& ss)
|
|
{
|
|
CRITICAL_BLOCK(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[inv] = ss;
|
|
vRelayExpiration.push_back(std::make_pair(GetTime() + 15 * 60, inv));
|
|
}
|
|
|
|
RelayInventory(inv);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
//
|
|
// Templates for the publish and subscription system.
|
|
// The object being published as T& obj needs to have:
|
|
// a set<unsigned int> setSources member
|
|
// specializations of AdvertInsert and AdvertErase
|
|
// Currently implemented for CTable and CProduct.
|
|
//
|
|
|
|
template<typename T>
|
|
void AdvertStartPublish(CNode* pfrom, unsigned int nChannel, unsigned int nHops, T& obj)
|
|
{
|
|
// Add to sources
|
|
obj.setSources.insert(pfrom->addr.ip);
|
|
|
|
if (!AdvertInsert(obj))
|
|
return;
|
|
|
|
// Relay
|
|
CRITICAL_BLOCK(cs_vNodes)
|
|
BOOST_FOREACH(CNode* pnode, vNodes)
|
|
if (pnode != pfrom && (nHops < PUBLISH_HOPS || pnode->IsSubscribed(nChannel)))
|
|
pnode->PushMessage("publish", nChannel, nHops, obj);
|
|
}
|
|
|
|
template<typename T>
|
|
void AdvertStopPublish(CNode* pfrom, unsigned int nChannel, unsigned int nHops, T& obj)
|
|
{
|
|
uint256 hash = obj.GetHash();
|
|
|
|
CRITICAL_BLOCK(cs_vNodes)
|
|
BOOST_FOREACH(CNode* pnode, vNodes)
|
|
if (pnode != pfrom && (nHops < PUBLISH_HOPS || pnode->IsSubscribed(nChannel)))
|
|
pnode->PushMessage("pub-cancel", nChannel, nHops, hash);
|
|
|
|
AdvertErase(obj);
|
|
}
|
|
|
|
template<typename T>
|
|
void AdvertRemoveSource(CNode* pfrom, unsigned int nChannel, unsigned int nHops, T& obj)
|
|
{
|
|
// Remove a source
|
|
obj.setSources.erase(pfrom->addr.ip);
|
|
|
|
// If no longer supported by any sources, cancel it
|
|
if (obj.setSources.empty())
|
|
AdvertStopPublish(pfrom, nChannel, nHops, obj);
|
|
}
|
|
|
|
#endif
|