mirror of
https://github.com/dashpay/dash.git
synced 2024-12-26 04:22:55 +01:00
8bb5edc1c9
Thanks joepie91 for the translation of the new copyright notices into Dutch. Thanks sipa for the translation of the new copyright notices into French. Thanks megu for the translation of the new copyright notices into Spanish. Thanks justmoon/Blitzboom for the translation of the new copyright notices into German. Thanks Joozero for the translation of the new copyright notices into Italian. Remaining translations were provided by Google Translate.
1056 lines
26 KiB
C++
1056 lines
26 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Distributed under the MIT/X11 software license, see the accompanying
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// file license.txt or http://www.opensource.org/licenses/mit-license.php.
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class CMessageHeader;
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class CAddress;
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class CInv;
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class CRequestTracker;
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class CNode;
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class CBlockIndex;
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extern int nBestHeight;
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inline unsigned short GetDefaultPort() { return fTestNet ? htons(18333) : htons(8333); }
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static const unsigned int PUBLISH_HOPS = 5;
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enum
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{
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NODE_NETWORK = (1 << 0),
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};
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bool ConnectSocket(const CAddress& addrConnect, SOCKET& hSocketRet);
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bool GetMyExternalIP(unsigned int& ipRet);
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bool AddAddress(CAddress addr, int64 nTimePenalty=0);
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void AddressCurrentlyConnected(const CAddress& addr);
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CNode* FindNode(unsigned int ip);
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CNode* ConnectNode(CAddress addrConnect, int64 nTimeout=0);
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void AbandonRequests(void (*fn)(void*, CDataStream&), void* param1);
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bool AnySubscribed(unsigned int nChannel);
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void MapPort(bool fMapPort);
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void DNSAddressSeed();
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bool BindListenPort(string& strError=REF(string()));
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void StartNode(void* parg);
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bool StopNode();
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//
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// Message header
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// (4) message start
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// (12) command
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// (4) size
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// (4) checksum
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extern char pchMessageStart[4];
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class CMessageHeader
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{
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public:
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enum { COMMAND_SIZE=12 };
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char pchMessageStart[sizeof(::pchMessageStart)];
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char pchCommand[COMMAND_SIZE];
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unsigned int nMessageSize;
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unsigned int nChecksum;
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CMessageHeader()
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{
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memcpy(pchMessageStart, ::pchMessageStart, sizeof(pchMessageStart));
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memset(pchCommand, 0, sizeof(pchCommand));
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pchCommand[1] = 1;
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nMessageSize = -1;
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nChecksum = 0;
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}
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CMessageHeader(const char* pszCommand, unsigned int nMessageSizeIn)
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{
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memcpy(pchMessageStart, ::pchMessageStart, sizeof(pchMessageStart));
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strncpy(pchCommand, pszCommand, COMMAND_SIZE);
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nMessageSize = nMessageSizeIn;
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nChecksum = 0;
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}
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IMPLEMENT_SERIALIZE
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(
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READWRITE(FLATDATA(pchMessageStart));
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READWRITE(FLATDATA(pchCommand));
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READWRITE(nMessageSize);
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if (nVersion >= 209)
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READWRITE(nChecksum);
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)
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string GetCommand()
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{
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if (pchCommand[COMMAND_SIZE-1] == 0)
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return string(pchCommand, pchCommand + strlen(pchCommand));
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else
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return string(pchCommand, pchCommand + COMMAND_SIZE);
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}
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bool IsValid()
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{
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// Check start string
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if (memcmp(pchMessageStart, ::pchMessageStart, sizeof(pchMessageStart)) != 0)
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return false;
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// Check the command string for errors
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for (char* p1 = pchCommand; p1 < pchCommand + COMMAND_SIZE; p1++)
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{
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if (*p1 == 0)
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{
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// Must be all zeros after the first zero
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for (; p1 < pchCommand + COMMAND_SIZE; p1++)
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if (*p1 != 0)
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return false;
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}
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else if (*p1 < ' ' || *p1 > 0x7E)
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return false;
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}
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// Message size
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if (nMessageSize > MAX_SIZE)
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{
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printf("CMessageHeader::IsValid() : (%s, %u bytes) nMessageSize > MAX_SIZE\n", GetCommand().c_str(), nMessageSize);
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return false;
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}
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return true;
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}
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};
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static const unsigned char pchIPv4[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff };
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class CAddress
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{
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public:
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uint64 nServices;
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unsigned char pchReserved[12];
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unsigned int ip;
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unsigned short port;
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// disk and network only
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unsigned int nTime;
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// memory only
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unsigned int nLastTry;
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CAddress()
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{
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Init();
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}
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CAddress(unsigned int ipIn, unsigned short portIn=0, uint64 nServicesIn=NODE_NETWORK)
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{
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Init();
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ip = ipIn;
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port = (portIn == 0 ? GetDefaultPort() : portIn);
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nServices = nServicesIn;
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}
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explicit CAddress(const struct sockaddr_in& sockaddr, uint64 nServicesIn=NODE_NETWORK)
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{
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Init();
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ip = sockaddr.sin_addr.s_addr;
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port = sockaddr.sin_port;
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nServices = nServicesIn;
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}
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explicit CAddress(const char* pszIn, uint64 nServicesIn=NODE_NETWORK)
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{
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Init();
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SetAddress(pszIn);
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nServices = nServicesIn;
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}
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explicit CAddress(string strIn, uint64 nServicesIn=NODE_NETWORK)
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{
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Init();
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SetAddress(strIn.c_str());
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nServices = nServicesIn;
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}
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void Init()
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{
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nServices = NODE_NETWORK;
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memcpy(pchReserved, pchIPv4, sizeof(pchReserved));
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ip = INADDR_NONE;
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port = GetDefaultPort();
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nTime = 100000000;
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nLastTry = 0;
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}
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bool SetAddress(const char* pszIn)
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{
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ip = INADDR_NONE;
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port = GetDefaultPort();
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char psz[100];
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strlcpy(psz, pszIn, sizeof(psz));
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unsigned int a=0, b=0, c=0, d=0, e=0;
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if (sscanf(psz, "%u.%u.%u.%u:%u", &a, &b, &c, &d, &e) < 4)
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return false;
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char* pszPort = strchr(psz, ':');
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if (pszPort)
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{
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*pszPort++ = '\0';
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port = htons(atoi(pszPort));
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if (atoi(pszPort) < 0 || atoi(pszPort) > USHRT_MAX)
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port = htons(USHRT_MAX);
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}
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ip = inet_addr(psz);
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return IsValid();
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}
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bool SetAddress(string strIn)
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{
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return SetAddress(strIn.c_str());
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}
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IMPLEMENT_SERIALIZE
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(
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if (fRead)
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const_cast<CAddress*>(this)->Init();
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if (nType & SER_DISK)
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READWRITE(nVersion);
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if ((nType & SER_DISK) || (nVersion >= 31402 && !(nType & SER_GETHASH)))
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READWRITE(nTime);
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READWRITE(nServices);
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READWRITE(FLATDATA(pchReserved)); // for IPv6
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READWRITE(ip);
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READWRITE(port);
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)
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friend inline bool operator==(const CAddress& a, const CAddress& b)
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{
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return (memcmp(a.pchReserved, b.pchReserved, sizeof(a.pchReserved)) == 0 &&
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a.ip == b.ip &&
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a.port == b.port);
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}
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friend inline bool operator!=(const CAddress& a, const CAddress& b)
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{
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return (!(a == b));
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}
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friend inline bool operator<(const CAddress& a, const CAddress& b)
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{
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int ret = memcmp(a.pchReserved, b.pchReserved, sizeof(a.pchReserved));
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if (ret < 0)
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return true;
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else if (ret == 0)
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{
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if (ntohl(a.ip) < ntohl(b.ip))
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return true;
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else if (a.ip == b.ip)
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return ntohs(a.port) < ntohs(b.port);
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}
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return false;
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}
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vector<unsigned char> GetKey() const
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{
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CDataStream ss;
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ss.reserve(18);
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ss << FLATDATA(pchReserved) << ip << port;
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#if defined(_MSC_VER) && _MSC_VER < 1300
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return vector<unsigned char>((unsigned char*)&ss.begin()[0], (unsigned char*)&ss.end()[0]);
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#else
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return vector<unsigned char>(ss.begin(), ss.end());
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#endif
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}
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struct sockaddr_in GetSockAddr() const
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{
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struct sockaddr_in sockaddr;
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memset(&sockaddr, 0, sizeof(sockaddr));
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sockaddr.sin_family = AF_INET;
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sockaddr.sin_addr.s_addr = ip;
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sockaddr.sin_port = port;
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return sockaddr;
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}
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bool IsIPv4() const
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{
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return (memcmp(pchReserved, pchIPv4, sizeof(pchIPv4)) == 0);
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}
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bool IsRoutable() const
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{
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return IsValid() &&
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!(GetByte(3) == 10 ||
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(GetByte(3) == 192 && GetByte(2) == 168) ||
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GetByte(3) == 127 ||
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GetByte(3) == 0);
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}
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bool IsValid() const
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{
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// Clean up 3-byte shifted addresses caused by garbage in size field
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// of addr messages from versions before 0.2.9 checksum.
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// Two consecutive addr messages look like this:
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// header20 vectorlen3 addr26 addr26 addr26 header20 vectorlen3 addr26 addr26 addr26...
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// so if the first length field is garbled, it reads the second batch
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// of addr misaligned by 3 bytes.
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if (memcmp(pchReserved, pchIPv4+3, sizeof(pchIPv4)-3) == 0)
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return false;
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return (ip != 0 && ip != INADDR_NONE && port != htons(USHRT_MAX));
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}
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unsigned char GetByte(int n) const
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{
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return ((unsigned char*)&ip)[3-n];
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}
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string ToStringIPPort() const
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{
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return strprintf("%u.%u.%u.%u:%u", GetByte(3), GetByte(2), GetByte(1), GetByte(0), ntohs(port));
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}
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string ToStringIP() const
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{
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return strprintf("%u.%u.%u.%u", GetByte(3), GetByte(2), GetByte(1), GetByte(0));
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}
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string ToStringPort() const
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{
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return strprintf("%u", ntohs(port));
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}
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string ToStringLog() const
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{
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return "";
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}
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string ToString() const
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{
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return strprintf("%u.%u.%u.%u:%u", GetByte(3), GetByte(2), GetByte(1), GetByte(0), ntohs(port));
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}
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void print() const
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{
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printf("CAddress(%s)\n", ToString().c_str());
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}
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};
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enum
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{
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MSG_TX = 1,
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MSG_BLOCK,
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};
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static const char* ppszTypeName[] =
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{
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"ERROR",
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"tx",
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"block",
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};
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class CInv
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{
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public:
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int type;
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uint256 hash;
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CInv()
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{
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type = 0;
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hash = 0;
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}
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CInv(int typeIn, const uint256& hashIn)
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{
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type = typeIn;
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hash = hashIn;
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}
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CInv(const string& strType, const uint256& hashIn)
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{
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int i;
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for (i = 1; i < ARRAYLEN(ppszTypeName); i++)
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{
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if (strType == ppszTypeName[i])
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{
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type = i;
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break;
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}
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}
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if (i == ARRAYLEN(ppszTypeName))
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throw std::out_of_range(strprintf("CInv::CInv(string, uint256) : unknown type '%s'", strType.c_str()));
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hash = hashIn;
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}
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IMPLEMENT_SERIALIZE
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(
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READWRITE(type);
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READWRITE(hash);
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)
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friend inline bool operator<(const CInv& a, const CInv& b)
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{
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return (a.type < b.type || (a.type == b.type && a.hash < b.hash));
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}
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bool IsKnownType() const
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{
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return (type >= 1 && type < ARRAYLEN(ppszTypeName));
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}
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const char* GetCommand() const
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{
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if (!IsKnownType())
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throw std::out_of_range(strprintf("CInv::GetCommand() : type=%d unknown type", type));
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return ppszTypeName[type];
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}
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string ToString() const
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{
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return strprintf("%s %s", GetCommand(), hash.ToString().substr(0,20).c_str());
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}
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void print() const
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{
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printf("CInv(%s)\n", ToString().c_str());
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}
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};
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class CRequestTracker
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{
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public:
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void (*fn)(void*, CDataStream&);
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void* param1;
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explicit CRequestTracker(void (*fnIn)(void*, CDataStream&)=NULL, void* param1In=NULL)
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{
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fn = fnIn;
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param1 = param1In;
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}
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bool IsNull()
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{
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return fn == NULL;
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}
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};
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extern bool fClient;
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extern uint64 nLocalServices;
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extern CAddress addrLocalHost;
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extern CNode* pnodeLocalHost;
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extern uint64 nLocalHostNonce;
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extern array<int, 10> vnThreadsRunning;
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extern SOCKET hListenSocket;
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extern vector<CNode*> vNodes;
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extern CCriticalSection cs_vNodes;
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extern map<vector<unsigned char>, CAddress> mapAddresses;
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extern CCriticalSection cs_mapAddresses;
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extern map<CInv, CDataStream> mapRelay;
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extern deque<pair<int64, CInv> > vRelayExpiration;
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extern CCriticalSection cs_mapRelay;
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extern map<CInv, int64> mapAlreadyAskedFor;
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// Settings
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extern int fUseProxy;
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extern CAddress addrProxy;
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class CNode
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{
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public:
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// socket
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uint64 nServices;
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SOCKET hSocket;
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CDataStream vSend;
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CDataStream vRecv;
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CCriticalSection cs_vSend;
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CCriticalSection cs_vRecv;
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int64 nLastSend;
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int64 nLastRecv;
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int64 nLastSendEmpty;
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int64 nTimeConnected;
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unsigned int nHeaderStart;
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unsigned int nMessageStart;
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CAddress addr;
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int nVersion;
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string strSubVer;
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bool fClient;
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bool fInbound;
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bool fNetworkNode;
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bool fSuccessfullyConnected;
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bool fDisconnect;
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protected:
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int nRefCount;
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public:
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int64 nReleaseTime;
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map<uint256, CRequestTracker> mapRequests;
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CCriticalSection cs_mapRequests;
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uint256 hashContinue;
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CBlockIndex* pindexLastGetBlocksBegin;
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uint256 hashLastGetBlocksEnd;
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int nStartingHeight;
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// flood relay
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vector<CAddress> vAddrToSend;
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set<CAddress> setAddrKnown;
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bool fGetAddr;
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set<uint256> setKnown;
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// inventory based relay
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set<CInv> setInventoryKnown;
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vector<CInv> vInventoryToSend;
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CCriticalSection cs_inventory;
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multimap<int64, CInv> mapAskFor;
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// publish and subscription
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vector<char> vfSubscribe;
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CNode(SOCKET hSocketIn, CAddress addrIn, bool fInboundIn=false)
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{
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nServices = 0;
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hSocket = hSocketIn;
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vSend.SetType(SER_NETWORK);
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vSend.SetVersion(0);
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vRecv.SetType(SER_NETWORK);
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vRecv.SetVersion(0);
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// Version 0.2 obsoletes 20 Feb 2012
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if (GetTime() > 1329696000)
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{
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vSend.SetVersion(209);
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vRecv.SetVersion(209);
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}
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nLastSend = 0;
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nLastRecv = 0;
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nLastSendEmpty = GetTime();
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nTimeConnected = GetTime();
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nHeaderStart = -1;
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nMessageStart = -1;
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addr = addrIn;
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nVersion = 0;
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strSubVer = "";
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fClient = false; // set by version message
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fInbound = fInboundIn;
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fNetworkNode = false;
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fSuccessfullyConnected = false;
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fDisconnect = false;
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nRefCount = 0;
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nReleaseTime = 0;
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hashContinue = 0;
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pindexLastGetBlocksBegin = 0;
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hashLastGetBlocksEnd = 0;
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nStartingHeight = -1;
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fGetAddr = false;
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vfSubscribe.assign(256, false);
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// Be shy and don't send version until we hear
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if (!fInbound)
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PushVersion();
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}
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|
|
|
~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);
|
|
}
|