diff options
author | Jaromil <jaromil@dyne.org> | 2011-04-23 11:49:47 +0200 |
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committer | Jaromil <jaromil@dyne.org> | 2011-04-23 12:10:25 +0200 |
commit | 84c3fb07b0b8199c7f85c5de280e7100bad0786f (patch) | |
tree | c259ad219b95fb3d55c685062f2ba226ec0dafe7 /net.h | |
parent | 64ad448adc67f3c32fe0dfe074c82a8377f67ee7 (diff) | |
download | bitcoin-84c3fb07b0b8199c7f85c5de280e7100bad0786f.tar.xz |
directory re-organization (keeps the old build system)
there is no internal modification of any file in this commit
files are moved into directories according to established standards in
sourcecode distribution; these directories contain:
src - Files that are used in constructing the executable binaries,
but are not installed.
doc - Files in HTML and text format that document usage, quirks of
the implementation, and contributor checklists.
locale - Files that contain human language translation of strings
used in the program
contrib - Files contributed from distributions or other third party
implementing scripts and auxiliary programs
Diffstat (limited to 'net.h')
-rw-r--r-- | net.h | 1055 |
1 files changed, 0 insertions, 1055 deletions
diff --git a/net.h b/net.h deleted file mode 100644 index b3bd74da47..0000000000 --- a/net.h +++ /dev/null @@ -1,1055 +0,0 @@ -// 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. - -class CMessageHeader; -class CAddress; -class CInv; -class CRequestTracker; -class CNode; -class CBlockIndex; -extern int nBestHeight; - - - -inline unsigned short GetDefaultPort() { return fTestNet ? htons(18333) : htons(8333); } -static const unsigned int PUBLISH_HOPS = 5; -enum -{ - NODE_NETWORK = (1 << 0), -}; - - - - -bool ConnectSocket(const CAddress& addrConnect, SOCKET& hSocketRet); -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(string& strError=REF(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); - ) - - string GetCommand() - { - if (pchCommand[COMMAND_SIZE-1] == 0) - return string(pchCommand, pchCommand + strlen(pchCommand)); - else - return 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 = (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, uint64 nServicesIn=NODE_NETWORK) - { - Init(); - SetAddress(pszIn); - nServices = nServicesIn; - } - - explicit CAddress(string strIn, uint64 nServicesIn=NODE_NETWORK) - { - Init(); - SetAddress(strIn.c_str()); - nServices = nServicesIn; - } - - void Init() - { - nServices = NODE_NETWORK; - memcpy(pchReserved, pchIPv4, sizeof(pchReserved)); - ip = INADDR_NONE; - port = GetDefaultPort(); - nTime = 100000000; - nLastTry = 0; - } - - bool SetAddress(const char* pszIn) - { - ip = INADDR_NONE; - port = GetDefaultPort(); - char psz[100]; - strlcpy(psz, pszIn, sizeof(psz)); - unsigned int a=0, b=0, c=0, d=0, e=0; - if (sscanf(psz, "%u.%u.%u.%u:%u", &a, &b, &c, &d, &e) < 4) - return false; - char* pszPort = strchr(psz, ':'); - if (pszPort) - { - *pszPort++ = '\0'; - port = htons(atoi(pszPort)); - if (atoi(pszPort) < 0 || atoi(pszPort) > USHRT_MAX) - port = htons(USHRT_MAX); - } - ip = inet_addr(psz); - return IsValid(); - } - - bool SetAddress(string strIn) - { - return SetAddress(strIn.c_str()); - } - - 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; - } - - vector<unsigned char> GetKey() const - { - CDataStream ss; - ss.reserve(18); - ss << FLATDATA(pchReserved) << ip << port; - - #if defined(_MSC_VER) && _MSC_VER < 1300 - return vector<unsigned char>((unsigned char*)&ss.begin()[0], (unsigned char*)&ss.end()[0]); - #else - return 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]; - } - - string ToStringIPPort() const - { - return strprintf("%u.%u.%u.%u:%u", GetByte(3), GetByte(2), GetByte(1), GetByte(0), ntohs(port)); - } - - string ToStringIP() const - { - return strprintf("%u.%u.%u.%u", GetByte(3), GetByte(2), GetByte(1), GetByte(0)); - } - - string ToStringPort() const - { - return strprintf("%u", ntohs(port)); - } - - string ToStringLog() const - { - return ""; - } - - 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 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]; - } - - 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 uint64 nLocalServices; -extern CAddress addrLocalHost; -extern CNode* pnodeLocalHost; -extern uint64 nLocalHostNonce; -extern array<int, 10> vnThreadsRunning; -extern SOCKET hListenSocket; - -extern vector<CNode*> vNodes; -extern CCriticalSection cs_vNodes; -extern map<vector<unsigned char>, CAddress> mapAddresses; -extern CCriticalSection cs_mapAddresses; -extern map<CInv, CDataStream> mapRelay; -extern deque<pair<int64, CInv> > vRelayExpiration; -extern CCriticalSection cs_mapRelay; -extern 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; - string strSubVer; - bool fClient; - bool fInbound; - bool fNetworkNode; - bool fSuccessfullyConnected; - bool fDisconnect; -protected: - int nRefCount; -public: - int64 nReleaseTime; - map<uint256, CRequestTracker> mapRequests; - CCriticalSection cs_mapRequests; - uint256 hashContinue; - CBlockIndex* pindexLastGetBlocksBegin; - uint256 hashLastGetBlocksEnd; - int nStartingHeight; - - // flood relay - vector<CAddress> vAddrToSend; - set<CAddress> setAddrKnown; - bool fGetAddr; - set<uint256> setKnown; - - // inventory based relay - set<CInv> setInventoryKnown; - vector<CInv> vInventoryToSend; - CCriticalSection cs_inventory; - multimap<int64, CInv> mapAskFor; - - // publish and subscription - 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 max(nRefCount, 0) + (GetTime() < nReleaseTime ? 1 : 0); - } - - CNode* AddRef(int64 nTimeout=0) - { - if (nTimeout != 0) - nReleaseTime = 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 = max(nNow, ++nLastTime); - - // Each retry is 2 minutes after the last - nRequestTime = max(nRequestTime + 2 * 60 * 1000000, nNow); - mapAskFor.insert(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, 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) - 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(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) - 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) - 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); -} |