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@ -9,7 +9,7 @@ |
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using namespace std; |
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int CAddrInfo::GetTriedBucket(const std::vector<unsigned char> &nKey) const |
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int CAddrInfo::GetTriedBucket(const std::vector<unsigned char>& nKey) const |
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{ |
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CDataStream ss1(SER_GETHASH, 0); |
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std::vector<unsigned char> vchKey = GetKey(); |
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@ -23,7 +23,7 @@ int CAddrInfo::GetTriedBucket(const std::vector<unsigned char> &nKey) const |
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return hash2 % ADDRMAN_TRIED_BUCKET_COUNT; |
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} |
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int CAddrInfo::GetNewBucket(const std::vector<unsigned char> &nKey, const CNetAddr& src) const |
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int CAddrInfo::GetNewBucket(const std::vector<unsigned char>& nKey, const CNetAddr& src) const |
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{ |
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CDataStream ss1(SER_GETHASH, 0); |
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std::vector<unsigned char> vchGroupKey = GetGroup(); |
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@ -39,19 +39,19 @@ int CAddrInfo::GetNewBucket(const std::vector<unsigned char> &nKey, const CNetAd |
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bool CAddrInfo::IsTerrible(int64_t nNow) const |
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{ |
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if (nLastTry && nLastTry >= nNow-60) // never remove things tried the last minute
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if (nLastTry && nLastTry >= nNow - 60) // never remove things tried the last minute
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return false; |
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if (nTime > nNow + 10*60) // came in a flying DeLorean
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if (nTime > nNow + 10 * 60) // came in a flying DeLorean
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return true; |
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if (nTime==0 || nNow-nTime > ADDRMAN_HORIZON_DAYS*24*60*60) // not seen in recent history
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if (nTime == 0 || nNow - nTime > ADDRMAN_HORIZON_DAYS * 24 * 60 * 60) // not seen in recent history
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return true; |
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if (nLastSuccess==0 && nAttempts>=ADDRMAN_RETRIES) // tried N times and never a success
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if (nLastSuccess == 0 && nAttempts >= ADDRMAN_RETRIES) // tried N times and never a success
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return true; |
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if (nNow-nLastSuccess > ADDRMAN_MIN_FAIL_DAYS*24*60*60 && nAttempts>=ADDRMAN_MAX_FAILURES) // N successive failures in the last week
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if (nNow - nLastSuccess > ADDRMAN_MIN_FAIL_DAYS * 24 * 60 * 60 && nAttempts >= ADDRMAN_MAX_FAILURES) // N successive failures in the last week
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return true; |
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return false; |
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@ -64,23 +64,25 @@ double CAddrInfo::GetChance(int64_t nNow) const |
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int64_t nSinceLastSeen = nNow - nTime; |
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int64_t nSinceLastTry = nNow - nLastTry; |
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if (nSinceLastSeen < 0) nSinceLastSeen = 0; |
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if (nSinceLastTry < 0) nSinceLastTry = 0; |
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if (nSinceLastSeen < 0) |
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nSinceLastSeen = 0; |
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if (nSinceLastTry < 0) |
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nSinceLastTry = 0; |
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fChance *= 600.0 / (600.0 + nSinceLastSeen); |
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// deprioritize very recent attempts away
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if (nSinceLastTry < 60*10) |
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if (nSinceLastTry < 60 * 10) |
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fChance *= 0.01; |
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// deprioritize 50% after each failed attempt
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for (int n=0; n<nAttempts; n++) |
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for (int n = 0; n < nAttempts; n++) |
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fChance /= 1.5; |
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return fChance; |
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} |
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CAddrInfo* CAddrMan::Find(const CNetAddr& addr, int *pnId) |
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CAddrInfo* CAddrMan::Find(const CNetAddr& addr, int* pnId) |
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{ |
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std::map<CNetAddr, int>::iterator it = mapAddr.find(addr); |
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if (it == mapAddr.end()) |
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@ -93,7 +95,7 @@ CAddrInfo* CAddrMan::Find(const CNetAddr& addr, int *pnId) |
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return NULL; |
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} |
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CAddrInfo* CAddrMan::Create(const CAddress &addr, const CNetAddr &addrSource, int *pnId) |
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CAddrInfo* CAddrMan::Create(const CAddress& addr, const CNetAddr& addrSource, int* pnId) |
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{ |
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int nId = nIdCount++; |
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mapInfo[nId] = CAddrInfo(addr, addrSource); |
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@ -127,22 +129,21 @@ void CAddrMan::SwapRandom(unsigned int nRndPos1, unsigned int nRndPos2) |
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int CAddrMan::SelectTried(int nKBucket) |
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{ |
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std::vector<int> &vTried = vvTried[nKBucket]; |
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std::vector<int>& vTried = vvTried[nKBucket]; |
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// random shuffle the first few elements (using the entire list)
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// find the least recently tried among them
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int64_t nOldest = -1; |
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int nOldestPos = -1; |
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for (unsigned int i = 0; i < ADDRMAN_TRIED_ENTRIES_INSPECT_ON_EVICT && i < vTried.size(); i++) |
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{ |
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for (unsigned int i = 0; i < ADDRMAN_TRIED_ENTRIES_INSPECT_ON_EVICT && i < vTried.size(); i++) { |
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int nPos = GetRandInt(vTried.size() - i) + i; |
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int nTemp = vTried[nPos]; |
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vTried[nPos] = vTried[i]; |
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vTried[i] = nTemp; |
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assert(nOldest == -1 || mapInfo.count(nTemp) == 1); |
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if (nOldest == -1 || mapInfo[nTemp].nLastSuccess < mapInfo[nOldest].nLastSuccess) { |
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nOldest = nTemp; |
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nOldestPos = nPos; |
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nOldest = nTemp; |
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nOldestPos = nPos; |
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} |
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} |
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@ -152,18 +153,15 @@ int CAddrMan::SelectTried(int nKBucket) |
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int CAddrMan::ShrinkNew(int nUBucket) |
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{ |
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assert(nUBucket >= 0 && (unsigned int)nUBucket < vvNew.size()); |
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std::set<int> &vNew = vvNew[nUBucket]; |
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std::set<int>& vNew = vvNew[nUBucket]; |
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// first look for deletable items
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for (std::set<int>::iterator it = vNew.begin(); it != vNew.end(); it++) |
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{ |
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for (std::set<int>::iterator it = vNew.begin(); it != vNew.end(); it++) { |
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assert(mapInfo.count(*it)); |
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CAddrInfo &info = mapInfo[*it]; |
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if (info.IsTerrible()) |
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{ |
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if (--info.nRefCount == 0) |
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{ |
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SwapRandom(info.nRandomPos, vRandom.size()-1); |
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CAddrInfo& info = mapInfo[*it]; |
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if (info.IsTerrible()) { |
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if (--info.nRefCount == 0) { |
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SwapRandom(info.nRandomPos, vRandom.size() - 1); |
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vRandom.pop_back(); |
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mapAddr.erase(info); |
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mapInfo.erase(*it); |
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@ -178,10 +176,8 @@ int CAddrMan::ShrinkNew(int nUBucket) |
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int n[4] = {GetRandInt(vNew.size()), GetRandInt(vNew.size()), GetRandInt(vNew.size()), GetRandInt(vNew.size())}; |
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int nI = 0; |
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int nOldest = -1; |
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for (std::set<int>::iterator it = vNew.begin(); it != vNew.end(); it++) |
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{ |
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if (nI == n[0] || nI == n[1] || nI == n[2] || nI == n[3]) |
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{ |
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for (std::set<int>::iterator it = vNew.begin(); it != vNew.end(); it++) { |
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if (nI == n[0] || nI == n[1] || nI == n[2] || nI == n[3]) { |
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assert(nOldest == -1 || mapInfo.count(*it) == 1); |
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if (nOldest == -1 || mapInfo[*it].nTime < mapInfo[nOldest].nTime) |
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nOldest = *it; |
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@ -189,10 +185,9 @@ int CAddrMan::ShrinkNew(int nUBucket) |
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nI++; |
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} |
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assert(mapInfo.count(nOldest) == 1); |
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CAddrInfo &info = mapInfo[nOldest]; |
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if (--info.nRefCount == 0) |
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{ |
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SwapRandom(info.nRandomPos, vRandom.size()-1); |
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CAddrInfo& info = mapInfo[nOldest]; |
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if (--info.nRefCount == 0) { |
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SwapRandom(info.nRandomPos, vRandom.size() - 1); |
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vRandom.pop_back(); |
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mapAddr.erase(info); |
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mapInfo.erase(nOldest); |
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@ -208,8 +203,7 @@ void CAddrMan::MakeTried(CAddrInfo& info, int nId, int nOrigin) |
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assert(vvNew[nOrigin].count(nId) == 1); |
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// remove the entry from all new buckets
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for (std::vector<std::set<int> >::iterator it = vvNew.begin(); it != vvNew.end(); it++) |
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{ |
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for (std::vector<std::set<int> >::iterator it = vvNew.begin(); it != vvNew.end(); it++) { |
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if ((*it).erase(nId)) |
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info.nRefCount--; |
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} |
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@ -219,11 +213,10 @@ void CAddrMan::MakeTried(CAddrInfo& info, int nId, int nOrigin) |
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// what tried bucket to move the entry to
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int nKBucket = info.GetTriedBucket(nKey); |
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std::vector<int> &vTried = vvTried[nKBucket]; |
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std::vector<int>& vTried = vvTried[nKBucket]; |
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// first check whether there is place to just add it
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if (vTried.size() < ADDRMAN_TRIED_BUCKET_SIZE) |
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{ |
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if (vTried.size() < ADDRMAN_TRIED_BUCKET_SIZE) { |
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vTried.push_back(nId); |
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nTried++; |
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info.fInTried = true; |
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@ -236,7 +229,7 @@ void CAddrMan::MakeTried(CAddrInfo& info, int nId, int nOrigin) |
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// find which new bucket it belongs to
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assert(mapInfo.count(vTried[nPos]) == 1); |
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int nUBucket = mapInfo[vTried[nPos]].GetNewBucket(nKey); |
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std::set<int> &vNew = vvNew[nUBucket]; |
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std::set<int>& vNew = vvNew[nUBucket]; |
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// remove the to-be-replaced tried entry from the tried set
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CAddrInfo& infoOld = mapInfo[vTried[nPos]]; |
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@ -245,8 +238,7 @@ void CAddrMan::MakeTried(CAddrInfo& info, int nId, int nOrigin) |
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// do not update nTried, as we are going to move something else there immediately
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// check whether there is place in that one,
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if (vNew.size() < ADDRMAN_NEW_BUCKET_SIZE) |
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{ |
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if (vNew.size() < ADDRMAN_NEW_BUCKET_SIZE) { |
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// if so, move it back there
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vNew.insert(vTried[nPos]); |
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} else { |
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@ -261,16 +253,16 @@ void CAddrMan::MakeTried(CAddrInfo& info, int nId, int nOrigin) |
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return; |
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} |
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void CAddrMan::Good_(const CService &addr, int64_t nTime) |
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void CAddrMan::Good_(const CService& addr, int64_t nTime) |
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{ |
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int nId; |
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CAddrInfo *pinfo = Find(addr, &nId); |
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CAddrInfo* pinfo = Find(addr, &nId); |
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// if not found, bail out
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if (!pinfo) |
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return; |
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CAddrInfo &info = *pinfo; |
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CAddrInfo& info = *pinfo; |
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// check whether we are talking about the exact same CService (including same port)
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if (info != addr) |
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@ -289,12 +281,10 @@ void CAddrMan::Good_(const CService &addr, int64_t nTime) |
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// find a bucket it is in now
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int nRnd = GetRandInt(vvNew.size()); |
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int nUBucket = -1; |
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for (unsigned int n = 0; n < vvNew.size(); n++) |
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{ |
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int nB = (n+nRnd) % vvNew.size(); |
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std::set<int> &vNew = vvNew[nB]; |
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if (vNew.count(nId)) |
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{ |
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for (unsigned int n = 0; n < vvNew.size(); n++) { |
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int nB = (n + nRnd) % vvNew.size(); |
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std::set<int>& vNew = vvNew[nB]; |
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if (vNew.count(nId)) { |
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nUBucket = nB; |
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break; |
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} |
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@ -302,7 +292,8 @@ void CAddrMan::Good_(const CService &addr, int64_t nTime) |
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// if no bucket is found, something bad happened;
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// TODO: maybe re-add the node, but for now, just bail out
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if (nUBucket == -1) return; |
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if (nUBucket == -1) |
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return; |
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LogPrint("addrman", "Moving %s to tried\n", addr.ToString()); |
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@ -310,17 +301,16 @@ void CAddrMan::Good_(const CService &addr, int64_t nTime) |
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MakeTried(info, nId, nUBucket); |
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} |
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bool CAddrMan::Add_(const CAddress &addr, const CNetAddr& source, int64_t nTimePenalty) |
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bool CAddrMan::Add_(const CAddress& addr, const CNetAddr& source, int64_t nTimePenalty) |
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{ |
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if (!addr.IsRoutable()) |
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return false; |
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bool fNew = false; |
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int nId; |
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CAddrInfo *pinfo = Find(addr, &nId); |
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CAddrInfo* pinfo = Find(addr, &nId); |
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if (pinfo) |
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{ |
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if (pinfo) { |
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// periodically update nTime
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bool fCurrentlyOnline = (GetAdjustedTime() - addr.nTime < 24 * 60 * 60); |
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int64_t nUpdateInterval = (fCurrentlyOnline ? 60 * 60 : 24 * 60 * 60); |
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@ -344,7 +334,7 @@ bool CAddrMan::Add_(const CAddress &addr, const CNetAddr& source, int64_t nTimeP |
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// stochastic test: previous nRefCount == N: 2^N times harder to increase it
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int nFactor = 1; |
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for (int n=0; n<pinfo->nRefCount; n++) |
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for (int n = 0; n < pinfo->nRefCount; n++) |
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nFactor *= 2; |
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if (nFactor > 1 && (GetRandInt(nFactor) != 0)) |
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return false; |
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@ -356,9 +346,8 @@ bool CAddrMan::Add_(const CAddress &addr, const CNetAddr& source, int64_t nTimeP |
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} |
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int nUBucket = pinfo->GetNewBucket(nKey, source); |
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std::set<int> &vNew = vvNew[nUBucket]; |
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if (!vNew.count(nId)) |
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{ |
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std::set<int>& vNew = vvNew[nUBucket]; |
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if (!vNew.count(nId)) { |
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pinfo->nRefCount++; |
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if (vNew.size() == ADDRMAN_NEW_BUCKET_SIZE) |
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ShrinkNew(nUBucket); |
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@ -367,15 +356,15 @@ bool CAddrMan::Add_(const CAddress &addr, const CNetAddr& source, int64_t nTimeP |
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return fNew; |
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} |
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void CAddrMan::Attempt_(const CService &addr, int64_t nTime) |
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void CAddrMan::Attempt_(const CService& addr, int64_t nTime) |
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{ |
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CAddrInfo *pinfo = Find(addr); |
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CAddrInfo* pinfo = Find(addr); |
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// if not found, bail out
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if (!pinfo) |
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return; |
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CAddrInfo &info = *pinfo; |
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CAddrInfo& info = *pinfo; |
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// check whether we are talking about the exact same CService (including same port)
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if (info != addr) |
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@ -393,37 +382,36 @@ CAddress CAddrMan::Select_(int nUnkBias) |
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double nCorTried = sqrt(nTried) * (100.0 - nUnkBias); |
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double nCorNew = sqrt(nNew) * nUnkBias; |
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if ((nCorTried + nCorNew)*GetRandInt(1<<30)/(1<<30) < nCorTried) |
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{ |
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if ((nCorTried + nCorNew) * GetRandInt(1 << 30) / (1 << 30) < nCorTried) { |
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// use a tried node
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double fChanceFactor = 1.0; |
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while(1) |
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{ |
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while (1) { |
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int nKBucket = GetRandInt(vvTried.size()); |
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std::vector<int> &vTried = vvTried[nKBucket]; |
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if (vTried.size() == 0) continue; |
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std::vector<int>& vTried = vvTried[nKBucket]; |
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if (vTried.size() == 0) |
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continue; |
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int nPos = GetRandInt(vTried.size()); |
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assert(mapInfo.count(vTried[nPos]) == 1); |
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CAddrInfo &info = mapInfo[vTried[nPos]]; |
|
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if (GetRandInt(1<<30) < fChanceFactor*info.GetChance()*(1<<30)) |
|
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|
CAddrInfo& info = mapInfo[vTried[nPos]]; |
|
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|
if (GetRandInt(1 << 30) < fChanceFactor * info.GetChance() * (1 << 30)) |
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return info; |
|
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|
fChanceFactor *= 1.2; |
|
|
|
} |
|
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|
} else { |
|
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|
// use a new node
|
|
|
|
double fChanceFactor = 1.0; |
|
|
|
while(1) |
|
|
|
{ |
|
|
|
while (1) { |
|
|
|
int nUBucket = GetRandInt(vvNew.size()); |
|
|
|
std::set<int> &vNew = vvNew[nUBucket]; |
|
|
|
if (vNew.size() == 0) continue; |
|
|
|
std::set<int>& vNew = vvNew[nUBucket]; |
|
|
|
if (vNew.size() == 0) |
|
|
|
continue; |
|
|
|
int nPos = GetRandInt(vNew.size()); |
|
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|
std::set<int>::iterator it = vNew.begin(); |
|
|
|
while (nPos--) |
|
|
|
it++; |
|
|
|
assert(mapInfo.count(*it) == 1); |
|
|
|
CAddrInfo &info = mapInfo[*it]; |
|
|
|
if (GetRandInt(1<<30) < fChanceFactor*info.GetChance()*(1<<30)) |
|
|
|
CAddrInfo& info = mapInfo[*it]; |
|
|
|
if (GetRandInt(1 << 30) < fChanceFactor * info.GetChance() * (1 << 30)) |
|
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|
return info; |
|
|
|
fChanceFactor *= 1.2; |
|
|
|
} |
|
|
|
@ -436,69 +424,76 @@ int CAddrMan::Check_() |
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|
std::set<int> setTried; |
|
|
|
std::map<int, int> mapNew; |
|
|
|
|
|
|
|
if (vRandom.size() != nTried + nNew) return -7; |
|
|
|
if (vRandom.size() != nTried + nNew) |
|
|
|
return -7; |
|
|
|
|
|
|
|
for (std::map<int, CAddrInfo>::iterator it = mapInfo.begin(); it != mapInfo.end(); it++) |
|
|
|
{ |
|
|
|
for (std::map<int, CAddrInfo>::iterator it = mapInfo.begin(); it != mapInfo.end(); it++) { |
|
|
|
int n = (*it).first; |
|
|
|
CAddrInfo &info = (*it).second; |
|
|
|
if (info.fInTried) |
|
|
|
{ |
|
|
|
|
|
|
|
if (!info.nLastSuccess) return -1; |
|
|
|
if (info.nRefCount) return -2; |
|
|
|
CAddrInfo& info = (*it).second; |
|
|
|
if (info.fInTried) { |
|
|
|
if (!info.nLastSuccess) |
|
|
|
return -1; |
|
|
|
if (info.nRefCount) |
|
|
|
return -2; |
|
|
|
setTried.insert(n); |
|
|
|
} else { |
|
|
|
if (info.nRefCount < 0 || info.nRefCount > ADDRMAN_NEW_BUCKETS_PER_ADDRESS) return -3; |
|
|
|
if (!info.nRefCount) return -4; |
|
|
|
if (info.nRefCount < 0 || info.nRefCount > ADDRMAN_NEW_BUCKETS_PER_ADDRESS) |
|
|
|
return -3; |
|
|
|
if (!info.nRefCount) |
|
|
|
return -4; |
|
|
|
mapNew[n] = info.nRefCount; |
|
|
|
} |
|
|
|
if (mapAddr[info] != n) return -5; |
|
|
|
if (info.nRandomPos<0 || info.nRandomPos>=vRandom.size() || vRandom[info.nRandomPos] != n) return -14; |
|
|
|
if (info.nLastTry < 0) return -6; |
|
|
|
if (info.nLastSuccess < 0) return -8; |
|
|
|
if (mapAddr[info] != n) |
|
|
|
return -5; |
|
|
|
if (info.nRandomPos < 0 || info.nRandomPos >= vRandom.size() || vRandom[info.nRandomPos] != n) |
|
|
|
return -14; |
|
|
|
if (info.nLastTry < 0) |
|
|
|
return -6; |
|
|
|
if (info.nLastSuccess < 0) |
|
|
|
return -8; |
|
|
|
} |
|
|
|
|
|
|
|
if (setTried.size() != nTried) return -9; |
|
|
|
if (mapNew.size() != nNew) return -10; |
|
|
|
if (setTried.size() != nTried) |
|
|
|
return -9; |
|
|
|
if (mapNew.size() != nNew) |
|
|
|
return -10; |
|
|
|
|
|
|
|
for (int n=0; n<vvTried.size(); n++) |
|
|
|
{ |
|
|
|
std::vector<int> &vTried = vvTried[n]; |
|
|
|
for (std::vector<int>::iterator it = vTried.begin(); it != vTried.end(); it++) |
|
|
|
{ |
|
|
|
if (!setTried.count(*it)) return -11; |
|
|
|
for (int n = 0; n < vvTried.size(); n++) { |
|
|
|
std::vector<int>& vTried = vvTried[n]; |
|
|
|
for (std::vector<int>::iterator it = vTried.begin(); it != vTried.end(); it++) { |
|
|
|
if (!setTried.count(*it)) |
|
|
|
return -11; |
|
|
|
setTried.erase(*it); |
|
|
|
} |
|
|
|
} |
|
|
|
|
|
|
|
for (int n=0; n<vvNew.size(); n++) |
|
|
|
{ |
|
|
|
std::set<int> &vNew = vvNew[n]; |
|
|
|
for (std::set<int>::iterator it = vNew.begin(); it != vNew.end(); it++) |
|
|
|
{ |
|
|
|
if (!mapNew.count(*it)) return -12; |
|
|
|
for (int n = 0; n < vvNew.size(); n++) { |
|
|
|
std::set<int>& vNew = vvNew[n]; |
|
|
|
for (std::set<int>::iterator it = vNew.begin(); it != vNew.end(); it++) { |
|
|
|
if (!mapNew.count(*it)) |
|
|
|
return -12; |
|
|
|
if (--mapNew[*it] == 0) |
|
|
|
mapNew.erase(*it); |
|
|
|
} |
|
|
|
} |
|
|
|
|
|
|
|
if (setTried.size()) return -13; |
|
|
|
if (mapNew.size()) return -15; |
|
|
|
if (setTried.size()) |
|
|
|
return -13; |
|
|
|
if (mapNew.size()) |
|
|
|
return -15; |
|
|
|
|
|
|
|
return 0; |
|
|
|
} |
|
|
|
#endif |
|
|
|
|
|
|
|
void CAddrMan::GetAddr_(std::vector<CAddress> &vAddr) |
|
|
|
void CAddrMan::GetAddr_(std::vector<CAddress>& vAddr) |
|
|
|
{ |
|
|
|
unsigned int nNodes = ADDRMAN_GETADDR_MAX_PCT * vRandom.size() / 100; |
|
|
|
if (nNodes > ADDRMAN_GETADDR_MAX) |
|
|
|
nNodes = ADDRMAN_GETADDR_MAX; |
|
|
|
|
|
|
|
// gather a list of random nodes, skipping those of low quality
|
|
|
|
for (unsigned int n = 0; n < vRandom.size(); n++) |
|
|
|
{ |
|
|
|
for (unsigned int n = 0; n < vRandom.size(); n++) { |
|
|
|
if (vAddr.size() >= nNodes) |
|
|
|
break; |
|
|
|
|
|
|
|
@ -512,15 +507,15 @@ void CAddrMan::GetAddr_(std::vector<CAddress> &vAddr) |
|
|
|
} |
|
|
|
} |
|
|
|
|
|
|
|
void CAddrMan::Connected_(const CService &addr, int64_t nTime) |
|
|
|
void CAddrMan::Connected_(const CService& addr, int64_t nTime) |
|
|
|
{ |
|
|
|
CAddrInfo *pinfo = Find(addr); |
|
|
|
CAddrInfo* pinfo = Find(addr); |
|
|
|
|
|
|
|
// if not found, bail out
|
|
|
|
if (!pinfo) |
|
|
|
return; |
|
|
|
|
|
|
|
CAddrInfo &info = *pinfo; |
|
|
|
CAddrInfo& info = *pinfo; |
|
|
|
|
|
|
|
// check whether we are talking about the exact same CService (including same port)
|
|
|
|
if (info != addr) |
|
|
|
|
Pieter Wuille
10 years ago