diff options
Diffstat (limited to 'node')
| -rw-r--r-- | node/Constants.hpp | 10 | ||||
| -rw-r--r-- | node/Hashtable.hpp | 5 | ||||
| -rw-r--r-- | node/IncomingPacket.cpp | 7 | ||||
| -rw-r--r-- | node/InetAddress.cpp | 36 | ||||
| -rw-r--r-- | node/InetAddress.hpp | 4 | ||||
| -rw-r--r-- | node/Node.cpp | 24 | ||||
| -rw-r--r-- | node/Path.hpp | 30 | ||||
| -rw-r--r-- | node/Peer.cpp | 352 | ||||
| -rw-r--r-- | node/Peer.hpp | 173 | ||||
| -rw-r--r-- | node/Switch.cpp | 81 | ||||
| -rw-r--r-- | node/Topology.cpp | 2 | ||||
| -rw-r--r-- | node/Topology.hpp | 2 | ||||
| -rw-r--r-- | node/Trace.cpp | 5 | ||||
| -rw-r--r-- | node/Trace.hpp | 2 |
14 files changed, 375 insertions, 358 deletions
diff --git a/node/Constants.hpp b/node/Constants.hpp index 30cd1575..6360a693 100644 --- a/node/Constants.hpp +++ b/node/Constants.hpp @@ -269,16 +269,6 @@ #define ZT_PATH_HEARTBEAT_PERIOD 14000 /** - * Paths are considered inactive if they have not received traffic in this long - */ -#define ZT_PATH_ALIVE_TIMEOUT 45000 - -/** - * Minimum time between attempts to check dead paths to see if they can be re-awakened - */ -#define ZT_PATH_MIN_REACTIVATE_INTERVAL 2500 - -/** * Do not accept HELLOs over a given path more often than this */ #define ZT_PATH_HELLO_RATE_LIMIT 1000 diff --git a/node/Hashtable.hpp b/node/Hashtable.hpp index 95a8e74f..e5496592 100644 --- a/node/Hashtable.hpp +++ b/node/Hashtable.hpp @@ -42,11 +42,6 @@ namespace ZeroTier { /** * A minimal hash table implementation for the ZeroTier core - * - * This is not a drop-in replacement for STL containers, and has several - * limitations. Keys can be uint64_t or an object, and if the latter they - * must implement a method called hashCode() that returns an unsigned long - * value that is evenly distributed. */ template<typename K,typename V> class Hashtable diff --git a/node/IncomingPacket.cpp b/node/IncomingPacket.cpp index 9b614e37..dfa0a161 100644 --- a/node/IncomingPacket.cpp +++ b/node/IncomingPacket.cpp @@ -446,7 +446,8 @@ bool IncomingPacket::_doOK(const RuntimeEnvironment *RR,void *tPtr,const SharedP } if (!hops()) - peer->addDirectLatencyMeasurment((unsigned int)latency); + _path->updateLatency((unsigned int)latency); + peer->setRemoteVersion(vProto,vMajor,vMinor,vRevision); if ((externalSurfaceAddress)&&(hops() == 0)) @@ -1091,7 +1092,7 @@ bool IncomingPacket::_doPUSH_DIRECT_PATHS(const RuntimeEnvironment *RR,void *tPt (RR->node->shouldUsePathForZeroTierTraffic(tPtr,peer->address(),_path->localSocket(),a)) ) // should use path { if ((flags & ZT_PUSH_DIRECT_PATHS_FLAG_CLUSTER_REDIRECT) != 0) { - peer->redirect(tPtr,_path->localSocket(),a,now); + peer->clusterRedirect(tPtr,_path->localSocket(),a,now); } else if (++countPerScope[(int)a.ipScope()][0] <= ZT_PUSH_DIRECT_PATHS_MAX_PER_SCOPE_AND_FAMILY) { peer->attemptToContactAt(tPtr,InetAddress(),a,now,false,0); } @@ -1105,7 +1106,7 @@ bool IncomingPacket::_doPUSH_DIRECT_PATHS(const RuntimeEnvironment *RR,void *tPt (RR->node->shouldUsePathForZeroTierTraffic(tPtr,peer->address(),_path->localSocket(),a)) ) // should use path { if ((flags & ZT_PUSH_DIRECT_PATHS_FLAG_CLUSTER_REDIRECT) != 0) { - peer->redirect(tPtr,_path->localSocket(),a,now); + peer->clusterRedirect(tPtr,_path->localSocket(),a,now); } else if (++countPerScope[(int)a.ipScope()][1] <= ZT_PUSH_DIRECT_PATHS_MAX_PER_SCOPE_AND_FAMILY) { peer->attemptToContactAt(tPtr,InetAddress(),a,now,false,0); } diff --git a/node/InetAddress.cpp b/node/InetAddress.cpp index f7585bdb..d3efc089 100644 --- a/node/InetAddress.cpp +++ b/node/InetAddress.cpp @@ -273,29 +273,27 @@ InetAddress InetAddress::network() const return r; } -#ifdef ZT_SDK - bool InetAddress::isEqualPrefix(const InetAddress &addr) const - { - if (addr.ss_family == ss_family) { - switch(ss_family) { - case AF_INET6: { - const InetAddress mask(netmask()); - InetAddress addr_mask(addr.netmask()); - const uint8_t *n = reinterpret_cast<const uint8_t *>(reinterpret_cast<const struct sockaddr_in6 *>(&addr_mask)->sin6_addr.s6_addr); - const uint8_t *m = reinterpret_cast<const uint8_t *>(reinterpret_cast<const struct sockaddr_in6 *>(&mask)->sin6_addr.s6_addr); - const uint8_t *a = reinterpret_cast<const uint8_t *>(reinterpret_cast<const struct sockaddr_in6 *>(&addr)->sin6_addr.s6_addr); - const uint8_t *b = reinterpret_cast<const uint8_t *>(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr); - for(unsigned int i=0;i<16;++i) { - if ((a[i] & m[i]) != (b[i] & n[i])) - return false; - } - return true; +bool InetAddress::isEqualPrefix(const InetAddress &addr) const +{ + if (addr.ss_family == ss_family) { + switch(ss_family) { + case AF_INET6: { + const InetAddress mask(netmask()); + InetAddress addr_mask(addr.netmask()); + const uint8_t *n = reinterpret_cast<const uint8_t *>(reinterpret_cast<const struct sockaddr_in6 *>(&addr_mask)->sin6_addr.s6_addr); + const uint8_t *m = reinterpret_cast<const uint8_t *>(reinterpret_cast<const struct sockaddr_in6 *>(&mask)->sin6_addr.s6_addr); + const uint8_t *a = reinterpret_cast<const uint8_t *>(reinterpret_cast<const struct sockaddr_in6 *>(&addr)->sin6_addr.s6_addr); + const uint8_t *b = reinterpret_cast<const uint8_t *>(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr); + for(unsigned int i=0;i<16;++i) { + if ((a[i] & m[i]) != (b[i] & n[i])) + return false; } + return true; } } - return false; } -#endif + return false; +} bool InetAddress::containsAddress(const InetAddress &addr) const { diff --git a/node/InetAddress.hpp b/node/InetAddress.hpp index 61cdb05e..79bf76ad 100644 --- a/node/InetAddress.hpp +++ b/node/InetAddress.hpp @@ -330,7 +330,6 @@ struct InetAddress : public sockaddr_storage */ InetAddress network() const; -#ifdef ZT_SDK /** * Test whether this IPv6 prefix matches the prefix of a given IPv6 address * @@ -338,8 +337,7 @@ struct InetAddress : public sockaddr_storage * @return True if this IPv6 prefix matches the prefix of a given IPv6 address */ bool isEqualPrefix(const InetAddress &addr) const; -#endif - + /** * Test whether this IP/netmask contains this address * diff --git a/node/Node.cpp b/node/Node.cpp index 31ee8f19..b7dbffc3 100644 --- a/node/Node.cpp +++ b/node/Node.cpp @@ -191,12 +191,13 @@ public: { const std::vector<InetAddress> *const upstreamStableEndpoints = _upstreamsToContact.get(p->address()); if (upstreamStableEndpoints) { - bool contacted = false; - // Upstreams must be pinged constantly over both IPv4 and IPv6 to allow // them to perform three way handshake introductions for both stacks. - if (!p->doPingAndKeepalive(_tPtr,_now,AF_INET)) { + const unsigned int sent = p->doPingAndKeepalive(_tPtr,_now); + bool contacted = (sent != 0); + + if ((sent & 0x1) == 0) { // bit 0x1 == IPv4 sent for(unsigned long k=0,ptr=(unsigned long)RR->node->prng();k<(unsigned long)upstreamStableEndpoints->size();++k) { const InetAddress &addr = (*upstreamStableEndpoints)[ptr++ % upstreamStableEndpoints->size()]; if (addr.ss_family == AF_INET) { @@ -205,8 +206,9 @@ public: break; } } - } else contacted = true; - if (!p->doPingAndKeepalive(_tPtr,_now,AF_INET6)) { + } + + if ((sent & 0x2) == 0) { // bit 0x2 == IPv6 sent for(unsigned long k=0,ptr=(unsigned long)RR->node->prng();k<(unsigned long)upstreamStableEndpoints->size();++k) { const InetAddress &addr = (*upstreamStableEndpoints)[ptr++ % upstreamStableEndpoints->size()]; if (addr.ss_family == AF_INET6) { @@ -215,8 +217,10 @@ public: break; } } - } else contacted = true; + } + // If we have no memoized addresses for this upstream peer, attempt to contact + // it indirectly so we will be introduced. if ((!contacted)&&(_bestCurrentUpstream)) { const SharedPtr<Path> up(_bestCurrentUpstream->getBestPath(_now,true)); if (up) @@ -224,9 +228,11 @@ public: } lastReceiveFromUpstream = std::max(p->lastReceive(),lastReceiveFromUpstream); - _upstreamsToContact.erase(p->address()); // erase from upstreams to contact so that we can WHOIS those that remain + + _upstreamsToContact.erase(p->address()); // after this we'll WHOIS all upstreams that remain } else if (p->isActive(_now)) { - p->doPingAndKeepalive(_tPtr,_now,-1); + // Regular non-upstream nodes get pinged if they appear active. + p->doPingAndKeepalive(_tPtr,_now); } } @@ -420,7 +426,7 @@ ZT_PeerList *Node::peers() const p->versionMinor = -1; p->versionRev = -1; } - p->latency = pi->second->latency(); + p->latency = pi->second->latency(_now); p->role = RR->topology->role(pi->second->identity().address()); std::vector< SharedPtr<Path> > paths(pi->second->paths(_now)); diff --git a/node/Path.hpp b/node/Path.hpp index 050fb6e2..80132c13 100644 --- a/node/Path.hpp +++ b/node/Path.hpp @@ -100,6 +100,7 @@ public: _incomingLinkQualitySlowLogCounter(-64), // discard first fast log _incomingLinkQualityPreviousPacketCounter(0), _outgoingPacketCounter(0), + _latency(0xffff), _addr(), _ipScope(InetAddress::IP_SCOPE_NONE) { @@ -117,6 +118,7 @@ public: _incomingLinkQualitySlowLogCounter(-64), // discard first fast log _incomingLinkQualityPreviousPacketCounter(0), _outgoingPacketCounter(0), + _latency(0xffff), _addr(addr), _ipScope(addr.ipScope()) { @@ -189,6 +191,19 @@ public: inline void sent(const int64_t t) { _lastOut = t; } /** + * Update path latency with a new measurement + * + * @param l Measured latency + */ + inline void updateLatency(const unsigned int l) + { + unsigned int pl = _latency; + if (pl < 0xffff) + _latency = (pl + l) / 2; + else _latency = l; + } + + /** * @return Local socket as specified by external code */ inline const int64_t localSocket() const { return _localSocket; } @@ -259,9 +274,19 @@ public: } /** - * @return True if path appears alive + * @return Latency or 0xffff if unknown */ - inline bool alive(const int64_t now) const { return ((now - _lastIn) <= ZT_PATH_ALIVE_TIMEOUT); } + inline unsigned int latency() const { return _latency; } + + /** + * @return Path quality -- lower is better + */ + inline int quality(const int64_t now) const + { + const int l = (int)_latency; + const int age = (int)std::min((now - _lastIn),(int64_t)(ZT_PATH_HEARTBEAT_PERIOD * 10)); // set an upper sanity limit to avoid overflow + return (((age < (ZT_PATH_HEARTBEAT_PERIOD + 5000)) ? l : (l + 0xffff + age)) * (int)((ZT_INETADDRESS_MAX_SCOPE - _ipScope) + 1)); + } /** * @return True if this path needs a heartbeat @@ -300,6 +325,7 @@ private: volatile signed int _incomingLinkQualitySlowLogCounter; volatile unsigned int _incomingLinkQualityPreviousPacketCounter; volatile unsigned int _outgoingPacketCounter; + volatile unsigned int _latency; InetAddress _addr; InetAddress::IpScope _ipScope; // memoize this since it's a computed value checked often volatile uint8_t _incomingLinkQualitySlowLog[32]; diff --git a/node/Peer.cpp b/node/Peer.cpp index 255d4004..61d8e990 100644 --- a/node/Peer.cpp +++ b/node/Peer.cpp @@ -52,12 +52,12 @@ Peer::Peer(const RuntimeEnvironment *renv,const Identity &myIdentity,const Ident _lastComRequestSent(0), _lastCredentialsReceived(0), _lastTrustEstablishedPacketReceived(0), + _lastSentFullHello(0), _vProto(0), _vMajor(0), _vMinor(0), _vRevision(0), _id(peerIdentity), - _latency(0), _directPathPushCutoffCount(0), _credentialsCutoffCount(0) { @@ -148,59 +148,47 @@ void Peer::received( if (hops == 0) { // If this is a direct packet (no hops), update existing paths or learn new ones - bool pathAlreadyKnown = false; - - { - Mutex::Lock _l(_paths_m); - if ((path->address().ss_family == AF_INET)&&(_v4Path.p)) { - const struct sockaddr_in *const r = reinterpret_cast<const struct sockaddr_in *>(&(path->address())); - const struct sockaddr_in *const l = reinterpret_cast<const struct sockaddr_in *>(&(_v4Path.p->address())); - if ((r->sin_addr.s_addr == l->sin_addr.s_addr)&&(r->sin_port == l->sin_port)&&(path->localSocket() == _v4Path.p->localSocket())) { - _v4Path.lr = now; - pathAlreadyKnown = true; - } - } else if ((path->address().ss_family == AF_INET6)&&(_v6Path.p)) { - const struct sockaddr_in6 *const r = reinterpret_cast<const struct sockaddr_in6 *>(&(path->address())); - const struct sockaddr_in6 *const l = reinterpret_cast<const struct sockaddr_in6 *>(&(_v6Path.p->address())); - if ((!memcmp(r->sin6_addr.s6_addr,l->sin6_addr.s6_addr,16))&&(r->sin6_port == l->sin6_port)&&(path->localSocket() == _v6Path.p->localSocket())) { - _v6Path.lr = now; - pathAlreadyKnown = true; - } - } - } - - if ( (!pathAlreadyKnown) && (RR->node->shouldUsePathForZeroTierTraffic(tPtr,_id.address(),path->localSocket(),path->address())) ) { - Mutex::Lock _l(_paths_m); + Mutex::Lock _l(_paths_m); - _PeerPath *replacablePath = (_PeerPath *)0; - if (path->address().ss_family == AF_INET) { - if ( ( (!_v4Path.p) || (!_v4Path.p->alive(now)) || (path->preferenceRank() >= _v4Path.p->preferenceRank()) ) && ( (now - _v4Path.sticky) > ZT_PEER_PATH_EXPIRATION ) ) { - replacablePath = &_v4Path; + unsigned int worstQualityPath = 0; + int worstQuality = 0; + bool havePath = false; + for(unsigned int p=0;p<ZT_PEER_MAX_PATHS;++p) { + if (_paths[p].p) { + if (_paths[p].p == path) { + _paths[p].lr = now; + havePath = true; + break; } - } else if (path->address().ss_family == AF_INET6) { - if ( ( (!_v6Path.p) || (!_v6Path.p->alive(now)) || (path->preferenceRank() >= _v6Path.p->preferenceRank()) ) && ( (now - _v6Path.sticky) > ZT_PEER_PATH_EXPIRATION ) ) { - replacablePath = &_v6Path; + const int q = _paths[p].p->quality(now) / _paths[p].priority; + if (q >= worstQuality) { + worstQuality = q; + worstQualityPath = p; } + } else { + worstQualityPath = p; + break; } + } - if (replacablePath) { - if (verb == Packet::VERB_OK) { - RR->t->peerLearnedNewPath(tPtr,networkId,*this,replacablePath->p,path,packetId); - replacablePath->lr = now; - replacablePath->p = path; - } else { - RR->t->peerConfirmingUnknownPath(tPtr,networkId,*this,path,packetId,verb); - attemptToContactAt(tPtr,path->localSocket(),path->address(),now,true,path->nextOutgoingCounter()); - path->sent(now); - } + if ((!havePath)&&(RR->node->shouldUsePathForZeroTierTraffic(tPtr,_id.address(),path->localSocket(),path->address()))) { + if (verb == Packet::VERB_OK) { + RR->t->peerLearnedNewPath(tPtr,networkId,*this,_paths[worstQualityPath].p,path,packetId); + _paths[worstQualityPath].lr = now; + _paths[worstQualityPath].p = path; + _paths[worstQualityPath].priority = 1; + } else { + attemptToContactAt(tPtr,path->localSocket(),path->address(),now,true,path->nextOutgoingCounter()); + path->sent(now); + RR->t->peerConfirmingUnknownPath(tPtr,networkId,*this,path,packetId,verb); } } } - // If we are being relayed or if we're using a global address, send PUSH_DIRECT_PATHS. - // In the global address case we push only configured direct paths to accomplish - // fall-forward to local backplane networks over e.g. LAN or Amazon VPC. - if ( ((hops > 0)||(path->ipScope() == InetAddress::IP_SCOPE_GLOBAL)) && (this->trustEstablished(now)) ) { + // If we have a trust relationship periodically push a message enumerating + // all known external addresses for ourselves. We now do this even if we + // have a current path since we'll want to use new ones too. + if (this->trustEstablished(now)) { if ((now - _lastDirectPathPushSent) >= ZT_DIRECT_PATH_PUSH_INTERVAL) { _lastDirectPathPushSent = now; @@ -210,6 +198,7 @@ void Peer::received( for(std::vector<InetAddress>::const_iterator i(dps.begin());i!=dps.end();++i) pathsToPush.push_back(*i); + // Do symmetric NAT prediction if we are communicating indirectly. if (hops > 0) { std::vector<InetAddress> sym(RR->sa->getSymmetricNatPredictions()); for(unsigned long i=0,added=0;i<sym.size();++i) { @@ -264,52 +253,148 @@ void Peer::received( } } -bool Peer::sendDirect(void *tPtr,const void *data,unsigned int len,int64_t now,bool force) +SharedPtr<Path> Peer::getBestPath(int64_t now,bool includeExpired) const { Mutex::Lock _l(_paths_m); - int64_t v6lr = 0; - if ( ((now - _v6Path.lr) < ZT_PEER_PATH_EXPIRATION) && (_v6Path.p) ) - v6lr = _v6Path.p->lastIn(); - int64_t v4lr = 0; - if ( ((now - _v4Path.lr) < ZT_PEER_PATH_EXPIRATION) && (_v4Path.p) ) - v4lr = _v4Path.p->lastIn(); - - if ( (v6lr > v4lr) && ((now - v6lr) < ZT_PATH_ALIVE_TIMEOUT) ) { - return _v6Path.p->send(RR,tPtr,data,len,now); - } else if ((now - v4lr) < ZT_PATH_ALIVE_TIMEOUT) { - return _v4Path.p->send(RR,tPtr,data,len,now); - } else if (force) { - if (v6lr > v4lr) { - return _v6Path.p->send(RR,tPtr,data,len,now); - } else if (v4lr) { - return _v4Path.p->send(RR,tPtr,data,len,now); - } + unsigned int bestPath = ZT_PEER_MAX_PATHS; + int bestPathQuality = 2147483647; // INT_MAX + for(unsigned int i=0;i<ZT_PEER_MAX_PATHS;++i) { + if (_paths[i].p) { + if ((includeExpired)||((now - _paths[i].lr) < ZT_PEER_PATH_EXPIRATION)) { + const int q = _paths[i].p->quality(now) / _paths[i].priority; + if (q < bestPathQuality) { + bestPathQuality = q; + bestPath = i; + } + } + } else break; } - return false; + if (bestPath != ZT_PEER_MAX_PATHS) + return _paths[bestPath].p; + return SharedPtr<Path>(); } -SharedPtr<Path> Peer::getBestPath(int64_t now,bool includeExpired) +void Peer::introduce(void *const tPtr,const int64_t now,const SharedPtr<Peer> &other) const { - Mutex::Lock _l(_paths_m); + unsigned int myBestV4ByScope[ZT_INETADDRESS_MAX_SCOPE+1]; + unsigned int myBestV6ByScope[ZT_INETADDRESS_MAX_SCOPE+1]; + int myBestV4QualityByScope[ZT_INETADDRESS_MAX_SCOPE+1]; + int myBestV6QualityByScope[ZT_INETADDRESS_MAX_SCOPE+1]; + unsigned int theirBestV4ByScope[ZT_INETADDRESS_MAX_SCOPE+1]; + unsigned int theirBestV6ByScope[ZT_INETADDRESS_MAX_SCOPE+1]; + int theirBestV4QualityByScope[ZT_INETADDRESS_MAX_SCOPE+1]; + int theirBestV6QualityByScope[ZT_INETADDRESS_MAX_SCOPE+1]; + for(int i=0;i<=ZT_INETADDRESS_MAX_SCOPE;++i) { + myBestV4ByScope[i] = ZT_PEER_MAX_PATHS; + myBestV6ByScope[i] = ZT_PEER_MAX_PATHS; + myBestV4QualityByScope[i] = 2147483647; + myBestV6QualityByScope[i] = 2147483647; + theirBestV4ByScope[i] = ZT_PEER_MAX_PATHS; + theirBestV6ByScope[i] = ZT_PEER_MAX_PATHS; + theirBestV4QualityByScope[i] = 2147483647; + theirBestV6QualityByScope[i] = 2147483647; + } - int64_t v6lr = 0; - if ((includeExpired || ((now - _v6Path.lr) < ZT_PEER_PATH_EXPIRATION)) && (_v6Path.p)) { - v6lr = _v6Path.p->lastIn(); + Mutex::Lock _l1(_paths_m); + + for(unsigned int i=0;i<ZT_PEER_MAX_PATHS;++i) { + if (_paths[i].p) { + const int q = _paths[i].p->quality(now) / _paths[i].priority; + const unsigned int s = (unsigned int)_paths[i].p->ipScope(); + switch(_paths[i].p->address().ss_family) { + case AF_INET: + if (q < myBestV4QualityByScope[s]) { + myBestV4QualityByScope[s] = q; + myBestV4ByScope[s] = i; + } + break; + case AF_INET6: + if (q < myBestV6QualityByScope[s]) { + myBestV6QualityByScope[s] = q; + myBestV6ByScope[s] = i; + } + break; + } + } else break; } - int64_t v4lr = 0; - if ((includeExpired || ((now - _v4Path.lr) < ZT_PEER_PATH_EXPIRATION)) && (_v4Path.p)) { - v4lr = _v4Path.p->lastIn(); + + Mutex::Lock _l2(other->_paths_m); + + for(unsigned int i=0;i<ZT_PEER_MAX_PATHS;++i) { + if (other->_paths[i].p) { + const int q = other->_paths[i].p->quality(now) / other->_paths[i].priority; + const unsigned int s = (unsigned int)other->_paths[i].p->ipScope(); + switch(other->_paths[i].p->address().ss_family) { + case AF_INET: + if (q < theirBestV4QualityByScope[s]) { + theirBestV4QualityByScope[s] = q; + theirBestV4ByScope[s] = i; + } + break; + case AF_INET6: + if (q < theirBestV6QualityByScope[s]) { + theirBestV6QualityByScope[s] = q; + theirBestV6ByScope[s] = i; + } + break; + } + } else break; } - if (v6lr > v4lr) { - return _v6Path.p; - } else if (v4lr) { - return _v4Path.p; + unsigned int mine = ZT_PEER_MAX_PATHS; + unsigned int theirs = ZT_PEER_MAX_PATHS; + + for(int s=ZT_INETADDRESS_MAX_SCOPE;s>=0;--s) { + if ((myBestV6ByScope[s] != ZT_PEER_MAX_PATHS)&&(theirBestV6ByScope[s] != ZT_PEER_MAX_PATHS)) { + mine = myBestV6ByScope[s]; + theirs = theirBestV6ByScope[s]; + break; + } + if ((myBestV4ByScope[s] != ZT_PEER_MAX_PATHS)&&(theirBestV4ByScope[s] != ZT_PEER_MAX_PATHS)) { + mine = myBestV4ByScope[s]; + theirs = theirBestV4ByScope[s]; + break; + } } - return SharedPtr<Path>(); + if (mine != ZT_PEER_MAX_PATHS) { + unsigned int alt = (unsigned int)RR->node->prng() & 1; // randomize which hint we send first for black magickal NAT-t reasons + const unsigned int completed = alt + 2; + while (alt != completed) { + if ((alt & 1) == 0) { + Packet outp(_id.address(),RR->identity.address(),Packet::VERB_RENDEZVOUS); + outp.append((uint8_t)0); + other->_id.address().appendTo(outp); + outp.append((uint16_t)other->_paths[theirs].p->address().port()); + if (other->_paths[theirs].p->address().ss_family == AF_INET6) { + outp.append((uint8_t)16); + outp.append(other->_paths[theirs].p->address().rawIpData(),16); + } else { + outp.append((uint8_t)4); + outp.append(other->_paths[theirs].p->address().rawIpData(),4); + } + outp.armor(_key,true,_paths[mine].p->nextOutgoingCounter()); + _paths[mine].p->send(RR,tPtr,outp.data(),outp.size(),now); + } else { + Packet outp(other->_id.address(),RR->identity.address(),Packet::VERB_RENDEZVOUS); + outp.append((uint8_t)0); + _id.address().appendTo(outp); + outp.append((uint16_t)_paths[mine].p->address().port()); + if (_paths[mine].p->address().ss_family == AF_INET6) { + outp.append((uint8_t)16); + outp.append(_paths[mine].p->address().rawIpData(),16); + } else { + outp.append((uint8_t)4); + outp.append(_paths[mine].p->address().rawIpData(),4); + } + outp.armor(other->_key,true,other->_paths[theirs].p->nextOutgoingCounter()); + other->_paths[theirs].p->send(RR,tPtr,outp.data(),outp.size(),now); + } + ++alt; + } + } } void Peer::sendHELLO(void *tPtr,const int64_t localSocket,const InetAddress &atAddress,int64_t now,unsigned int counter) @@ -377,76 +462,83 @@ void Peer::tryMemorizedPath(void *tPtr,int64_t now) } } -bool Peer::doPingAndKeepalive(void *tPtr,int64_t now,int inetAddressFamily) +unsigned int Peer::doPingAndKeepalive(void *tPtr,int64_t now) { + unsigned int sent = 0; + Mutex::Lock _l(_paths_m); - if (inetAddressFamily < 0) { - int64_t v6lr = 0; - if ( ((now - _v6Path.lr) < ZT_PEER_PATH_EXPIRATION) && (_v6Path.p) ) - v6lr = _v6Path.p->lastIn(); - int64_t v4lr = 0; - if ( ((now - _v4Path.lr) < ZT_PEER_PATH_EXPIRATION) && (_v4Path.p) ) - v4lr = _v4Path.p->lastIn(); - - if (v6lr > v4lr) { - if ( ((now - _v6Path.lr) >= ZT_PEER_PING_PERIOD) || (_v6Path.p->needsHeartbeat(now)) ) { - attemptToContactAt(tPtr,_v6Path.p->localSocket(),_v6Path.p->address(),now,false,_v6Path.p->nextOutgoingCounter()); - _v6Path.p->sent(now); - return true; - } - } else if (v4lr) { - if ( ((now - _v4Path.lr) >= ZT_PEER_PING_PERIOD) || (_v4Path.p->needsHeartbeat(now)) ) { - attemptToContactAt(tPtr,_v4Path.p->localSocket(),_v4Path.p->address(),now,false,_v4Path.p->nextOutgoingCounter()); - _v4Path.p->sent(now); - return true; - } - } - } else { - if ( (inetAddressFamily == AF_INET) && ((now - _v4Path.lr) < ZT_PEER_PATH_EXPIRATION) ) { - if ( ((now - _v4Path.lr) >= ZT_PEER_PING_PERIOD) || (_v4Path.p->needsHeartbeat(now)) ) { - attemptToContactAt(tPtr,_v4Path.p->localSocket(),_v4Path.p->address(),now,false,_v4Path.p->nextOutgoingCounter()); - _v4Path.p->sent(now); - return true; - } - } else if ( (inetAddressFamily == AF_INET6) && ((now - _v6Path.lr) < ZT_PEER_PATH_EXPIRATION) ) { - if ( ((now - _v6Path.lr) >= ZT_PEER_PING_PERIOD) || (_v6Path.p->needsHeartbeat(now)) ) { - attemptToContactAt(tPtr,_v6Path.p->localSocket(),_v6Path.p->address(),now,false,_v6Path.p->nextOutgoingCounter()); - _v6Path.p->sent(now); - return true; + const bool sendFullHello = ((now - _lastSentFullHello) >= ZT_PEER_PING_PERIOD); + _lastSentFullHello = now; + + unsigned int j = 0; + for(unsigned int i=0;i<ZT_PEER_MAX_PATHS;++i) { + if (!_paths[i].p) break; + if ((now - _paths[i].lr) < ZT_PEER_PATH_EXPIRATION) { + if ((sendFullHello)||(_paths[i].p->needsHeartbeat(now))) { + attemptToContactAt(tPtr,_paths[i].p->localSocket(),_paths[i].p->address(),now,sendFullHello,_paths[i].p->nextOutgoingCounter()); + _paths[i].p->sent(now); + sent |= (_paths[i].p->address().ss_family == AF_INET) ? 0x1 : 0x2; } + if (i != j) + _paths[j] = _paths[i]; + ++j; } } + while(j < ZT_PEER_MAX_PATHS) { + _paths[j].lr = 0; + _paths[j].p.zero(); + _paths[j].priority = 1; + ++j; + } - return false; + return sent; } -void Peer::redirect(void *tPtr,const int64_t localSocket,const InetAddress &remoteAddress,const int64_t now) +void Peer::clusterRedirect(void *tPtr,const int64_t localSocket,const InetAddress &remoteAddress,const int64_t now) { - if ((remoteAddress.ss_family != AF_INET)&&(remoteAddress.ss_family != AF_INET6)) // sanity check - return; - - SharedPtr<Path> op; SharedPtr<Path> np(RR->topology->getPath(localSocket,remoteAddress)); - np->received(now); + RR->t->peerRedirected(tPtr,0,*this,np); attemptToContactAt(tPtr,localSocket,remoteAddress,now,true,np->nextOutgoingCounter()); - { Mutex::Lock _l(_paths_m); - if (remoteAddress.ss_family == AF_INET) { - op = _v4Path.p; - _v4Path.lr = now; - _v4Path.sticky = now; - _v4Path.p = np; - } else if (remoteAddress.ss_family == AF_INET6) { - op = _v6Path.p; - _v6Path.lr = now; - _v6Path.sticky = now; - _v6Path.p = np; + int worstQuality = 0; + unsigned int worstQualityPath = 0; + for(unsigned int i=0;i<ZT_PEER_MAX_PATHS;++i) { + if (_paths[i].p) { + if (_paths[i].p == np) { // <-- where's my Fields Medal? + _paths[i].lr = now; // consider this a "receive" + _paths[i].priority += 5; // kind of arbitrary, bumps way up in best path quality order + return; + } + const int q = _paths[i].p->quality(now) / _paths[i].priority; + if (q >= worstQuality) { + worstQuality = q; + worstQualityPath = i; + } + } else { + worstQualityPath = i; + break; + } } + _paths[worstQualityPath].lr = now; + _paths[worstQualityPath].p = np; + _paths[worstQualityPath].priority = 6; // 1 + 5 } +} - RR->t->peerRedirected(tPtr,0,*this,op,np); +void Peer::resetWithinScope(void *tPtr,InetAddress::IpScope scope,int inetAddressFamily,int64_t now) +{ + Mutex::Lock _l(_paths_m); + for(unsigned int i=0;i<ZT_PEER_MAX_PATHS;++i) { + if (_paths[i].p) { + if ((_paths[i].p->address().ss_family == inetAddressFamily)&&(_paths[i].p->ipScope() == scope)) { + attemptToContactAt(tPtr,_paths[i].p->localSocket(),_paths[i].p->address(),now,false,_paths[i].p->nextOutgoingCounter()); + _paths[i].p->sent(now); + _paths[i].lr = 0; // path will not be used unless it speaks again + } + } else break; + } } } // namespace ZeroTier diff --git a/node/Peer.hpp b/node/Peer.hpp index e08f7d36..c236a2cd 100644 --- a/node/Peer.hpp +++ b/node/Peer.hpp @@ -53,6 +53,15 @@ #define ZT_PEER_MAX_SERIALIZED_STATE_SIZE (sizeof(Peer) + 32 + (sizeof(Path) * 2)) +/** + * Maximum number of direct paths to a peer + * + * This can be increased. You'll want about 2X the number of physical links + * you are ever likely to want to bundle/trunk since there is likely to be + * a path for every protocol (IPv4, IPv6, etc.). + */ +#define ZT_PEER_MAX_PATHS 16 + namespace ZeroTier { /** @@ -116,6 +125,8 @@ public: const uint64_t networkId); /** + * Check whether we have an active path to this peer via the given address + * * @param now Current time * @param addr Remote address * @return True if we have an active path to this destination @@ -123,7 +134,13 @@ public: inline bool hasActivePathTo(int64_t now,const InetAddress &addr) const { Mutex::Lock _l(_paths_m); - return ( ((addr.ss_family == AF_INET)&&(_v4Path.p)&&(_v4Path.p->address() == addr)&&(_v4Path.p->alive(now))) || ((addr.ss_family == AF_INET6)&&(_v6Path.p)&&(_v6Path.p->address() == addr)&&(_v6Path.p->alive(now))) ); + for(unsigned int i=0;i<ZT_PEER_MAX_PATHS;++i) { + if (_paths[i].p) { + if (((now - _paths[i].lr) < ZT_PEER_PATH_EXPIRATION)&&(_paths[i].p->address() == addr)) + return true; + } else break; + } + return false; } /** @@ -136,19 +153,27 @@ public: * @param force If true, send even if path is not alive * @return True if we actually sent something */ - bool sendDirect(void *tPtr,const void *data,unsigned int len,int64_t now,bool force); + inline bool sendDirect(void *tPtr,const void *data,unsigned int len,int64_t now,bool force) + { + SharedPtr<Path> bp(getBestPath(now,force)); + if (bp) + return bp->send(RR,tPtr,data,len,now); + return false; + } /** * Get the best current direct path * - * This does not check Path::alive(), but does return the most recently - * active path and does check expiration (which is a longer timeout). - * * @param now Current time * @param includeExpired If true, include even expired paths * @return Best current path or NULL if none */ - SharedPtr<Path> getBestPath(int64_t now,bool includeExpired); + SharedPtr<Path> getBestPath(int64_t now,bool includeExpired) const; + + /** + * Send VERB_RENDEZVOUS to this and another peer via the best common IP scope and path + */ + void introduce(void *const tPtr,const int64_t now,const SharedPtr<Peer> &other) const; /** * Send a HELLO to this peer at a specified physical address @@ -190,67 +215,39 @@ public: /** * Send pings or keepalives depending on configured timeouts * + * This also cleans up some internal data structures. It's called periodically from Node. + * * @param tPtr Thread pointer to be handed through to any callbacks called as a result of this call * @param now Current time * @param inetAddressFamily Keep this address family alive, or -1 for any - * @return True if we have at least one direct path of the given family (or any if family is -1) + * @return 0 if nothing sent or bit mask: bit 0x1 if IPv4 sent, bit 0x2 if IPv6 sent (0x3 means both sent) */ - bool doPingAndKeepalive(void *tPtr,int64_t now,int inetAddressFamily); + unsigned int doPingAndKeepalive(void *tPtr,int64_t now); /** - * Specify remote path for this peer and forget others - * - * This overrides normal path learning and tells this peer to be found - * at this address, at least within the address's family. Other address - * families are not modified. + * Process a cluster redirect sent by this peer * * @param tPtr Thread pointer to be handed through to any callbacks called as a result of this call * @param localSocket Local socket as supplied by external code * @param remoteAddress Remote address * @param now Current time */ - void redirect(void *tPtr,const int64_t localSocket,const InetAddress &remoteAddress,const int64_t now); + void clusterRedirect(void *tPtr,const int64_t localSocket,const InetAddress &remoteAddress,const int64_t now); /** * Reset paths within a given IP scope and address family * * Resetting a path involves sending an ECHO to it and then deactivating - * it until or unless it responds. + * it until or unless it responds. This is done when we detect a change + * to our external IP or another system change that might invalidate + * many or all current paths. * * @param tPtr Thread pointer to be handed through to any callbacks called as a result of this call * @param scope IP scope * @param inetAddressFamily Family e.g. AF_INET * @param now Current time */ - inline void resetWithinScope(void *tPtr,InetAddress::IpScope scope,int inetAddressFamily,int64_t now) - { - Mutex::Lock _l(_paths_m); - if ((inetAddressFamily == AF_INET)&&(_v4Path.lr)&&(_v4Path.p->address().ipScope() == scope)) { - attemptToContactAt(tPtr,_v4Path.p->localSocket(),_v4Path.p->address(),now,false,_v4Path.p->nextOutgoingCounter()); - _v4Path.p->sent(now); - _v4Path.lr = 0; // path will not be used unless it speaks again - } else if ((inetAddressFamily == AF_INET6)&&(_v6Path.lr)&&(_v6Path.p->address().ipScope() == scope)) { - attemptToContactAt(tPtr,_v6Path.p->localSocket(),_v6Path.p->address(),now,false,_v6Path.p->nextOutgoingCounter()); - _v6Path.p->sent(now); - _v6Path.lr = 0; // path will not be used unless it speaks again - } - } - - /** - * Fill parameters with V4 and V6 addresses if known and alive - * - * @param now Current time - * @param v4 Result parameter to receive active IPv4 address, if any - * @param v6 Result parameter to receive active IPv6 address, if any - */ - inline void getRendezvousAddresses(int64_t now,InetAddress &v4,InetAddress &v6) const - { - Mutex::Lock _l(_paths_m); - if (((now - _v4Path.lr) < ZT_PEER_PATH_EXPIRATION)&&(_v4Path.p->alive(now))) - v4 = _v4Path.p->address(); - if (((now - _v6Path.lr) < ZT_PEER_PATH_EXPIRATION)&&(_v6Path.p->alive(now))) - v6 = _v6Path.p->address(); - } + void resetWithinScope(void *tPtr,InetAddress::IpScope scope,int inetAddressFamily,int64_t now); /** * @param now Current time @@ -260,10 +257,10 @@ public: { std::vector< SharedPtr<Path> > pp; Mutex::Lock _l(_paths_m); - if (((now - _v4Path.lr) < ZT_PEER_PATH_EXPIRATION)&&(_v4Path.p->alive(now))) - pp.push_back(_v4Path.p); - if (((now - _v6Path.lr) < ZT_PEER_PATH_EXPIRATION)&&(_v6Path.p->alive(now))) - pp.push_back(_v6Path.p); + for(unsigned int i=0;i<ZT_PEER_MAX_PATHS;++i) { + if (!_paths[i].p) break; + pp.push_back(_paths[i].p); + } return pp; } @@ -283,9 +280,13 @@ public: inline int64_t isActive(int64_t now) const { return ((now - _lastNontrivialReceive) < ZT_PEER_ACTIVITY_TIMEOUT); } /** - * @return Latency in milliseconds or 0 if unknown + * @return Latency in milliseconds of best path or 0xffff if unknown / no paths */ - inline unsigned int latency() const { return _latency; } + inline unsigned int latency(const int64_t now) const + { + SharedPtr<Path> bp(getBestPath(now,false)); + return ((bp) ? bp->latency() : 0xffff); + } /** * This computes a quality score for relays and root servers @@ -303,26 +304,13 @@ public: const uint64_t tsr = now - _lastReceive; if (tsr >= ZT_PEER_ACTIVITY_TIMEOUT) return (~(unsigned int)0); - unsigned int l = _latency; + unsigned int l = latency(now); if (!l) l = 0xffff; return (l * (((unsigned int)tsr / (ZT_PEER_PING_PERIOD + 1000)) + 1)); } /** - * Update latency with a new direct measurment - * - * @param l Direct latency measurment in ms - */ - inline void addDirectLatencyMeasurment(unsigned int l) - { - unsigned int ol = _latency; - if ((ol > 0)&&(ol < 10000)) - _latency = (ol + std::min(l,(unsigned int)65535)) / 2; - else _latency = std::min(l,(unsigned int)65535); - } - - /** * @return 256-bit secret symmetric encryption key */ inline const unsigned char *key() const { return _key; } @@ -442,29 +430,15 @@ public: /** * Serialize a peer for storage in local cache * - * This does not serialize everything, just identity and addresses where the peer - * may be reached. + * This does not serialize everything, just non-ephemeral information. */ template<unsigned int C> - inline void serialize(Buffer<C> &b) const + inline void serializeForCache(Buffer<C> &b) const { - b.append((uint8_t)0); + b.append((uint8_t)1); _id.serialize(b); - b.append(_lastReceive); - b.append(_lastNontrivialReceive); - b.append(_lastTriedMemorizedPath); - b.append(_lastDirectPathPushSent); - b.append(_lastDirectPathPushReceive); - b.append(_lastCredentialRequestSent); - b.append(_lastWhoisRequestReceived); - b.append(_lastEchoRequestReceived); - b.append(_lastComRequestReceived); - b.append(_lastComRequestSent); - b.append(_lastCredentialsReceived); - b.append(_lastTrustEstablishedPacketReceived); - b.append((uint16_t)_vProto); b.append((uint16_t)_vMajor); b.append((uint16_t)_vMinor); @@ -472,15 +446,16 @@ public: { Mutex::Lock _l(_paths_m); - unsigned int pcount = 0; - if (_v4Path.p) ++pcount; - if (_v6Path.p) ++pcount; - b.append((uint8_t)pcount); - if (_v4Path.p) _v4Path.p->address().serialize(b); - if (_v6Path.p) _v6Path.p->address().serialize(b); + unsigned int pc = 0; + for(unsigned int i=0;i<ZT_PEER_MAX_PATHS;++i) { + if (_paths[i].p) + ++pc; + else break; + } + b.append((uint16_t)pc); + for(unsigned int i=0;i<pc;++i) + _paths[i].p->address().serialize(b); } - - b.append((uint16_t)0); } template<unsigned int C> @@ -488,7 +463,7 @@ public: { try { unsigned int ptr = 0; - if (b[ptr++] != 0) + if (b[ptr++] != 1) return SharedPtr<Peer>(); Identity id; @@ -498,15 +473,16 @@ public: SharedPtr<Peer> p(new Peer(renv,renv->identity,id)); - ptr += 12 * 8; // skip deserializing ephemeral state in this case - p->_vProto = b.template at<uint16_t>(ptr); ptr += 2; p->_vMajor = b.template at<uint16_t>(ptr); ptr += 2; p->_vMinor = b.template at<uint16_t>(ptr); ptr += 2; p->_vRevision = b.template at<uint16_t>(ptr); ptr += 2; - const unsigned int pcount = (unsigned int)b[ptr++]; - for(unsigned int i=0;i<pcount;++i) { + // When we deserialize from the cache we don't actually restore paths. We + // just try them and then re-learn them if they happen to still be up. + // Paths are fairly ephemeral in the real world in most cases. + const unsigned int tryPathCount = b.template at<uint16_t>(ptr); ptr += 2; + for(unsigned int i=0;i<tryPathCount;++i) { InetAddress inaddr; try { ptr += inaddr.deserialize(b,ptr); @@ -526,10 +502,10 @@ public: private: struct _PeerPath { - _PeerPath() : lr(0),sticky(0),p() {} + _PeerPath() : lr(0),p(),priority(1) {} int64_t lr; // time of last valid ZeroTier packet - int64_t sticky; // time last set as sticky SharedPtr<Path> p; + int priority; // >= 1, higher is better }; uint8_t _key[ZT_PEER_SECRET_KEY_LENGTH]; @@ -548,19 +524,18 @@ private: int64_t _lastComRequestSent; int64_t _lastCredentialsReceived; int64_t _lastTrustEstablishedPacketReceived; + int64_t _lastSentFullHello; uint16_t _vProto; uint16_t _vMajor; uint16_t _vMinor; uint16_t _vRevision; - _PeerPath _v4Path; // IPv4 direct path - _PeerPath _v6Path; // IPv6 direct path + _PeerPath _paths[ZT_PEER_MAX_PATHS]; Mutex _paths_m; Identity _id; - unsigned int _latency; unsigned int _directPathPushCutoffCount; unsigned int _credentialsCutoffCount; diff --git a/node/Switch.cpp b/node/Switch.cpp index cc022b6b..a8cf0ce6 100644 --- a/node/Switch.cpp +++ b/node/Switch.cpp @@ -169,68 +169,22 @@ void Switch::onRemotePacket(void *tPtr,const int64_t localSocket,const InetAddre if (packet.hops() < ZT_RELAY_MAX_HOPS) { packet.incrementHops(); - SharedPtr<Peer> relayTo = RR->topology->getPeer(tPtr,destination); if ((relayTo)&&(relayTo->sendDirect(tPtr,packet.data(),packet.size(),now,false))) { - if ((source != RR->identity.address())&&(_shouldUnite(now,source,destination))) { // don't send RENDEZVOUS for cluster frontplane relays - const InetAddress *hintToSource = (InetAddress *)0; - const InetAddress *hintToDest = (InetAddress *)0; - - InetAddress destV4,destV6; - InetAddress sourceV4,sourceV6; - relayTo->getRendezvousAddresses(now,destV4,destV6); - + if ((source != RR->identity.address())&&(_shouldUnite(now,source,destination))) { const SharedPtr<Peer> sourcePeer(RR->topology->getPeer(tPtr,source)); - if (sourcePeer) { - sourcePeer->getRendezvousAddresses(now,sourceV4,sourceV6); - if ((destV6)&&(sourceV6)) { - hintToSource = &destV6; - hintToDest = &sourceV6; - } else if ((destV4)&&(sourceV4)) { - hintToSource = &destV4; - hintToDest = &sourceV4; - } - - if ((hintToSource)&&(hintToDest)) { - unsigned int alt = (unsigned int)RR->node->prng() & 1; // randomize which hint we send first for obscure NAT-t reasons - const unsigned int completed = alt + 2; - while (alt != completed) { - if ((alt & 1) == 0) { - Packet outp(source,RR->identity.address(),Packet::VERB_RENDEZVOUS); - outp.append((uint8_t)0); - destination.appendTo(outp); - outp.append((uint16_t)hintToSource->port()); - if (hintToSource->ss_family == AF_INET6) { - outp.append((uint8_t)16); - outp.append(hintToSource->rawIpData(),16); - } else { - outp.append((uint8_t)4); - outp.append(hintToSource->rawIpData(),4); - } - send(tPtr,outp,true); - } else { - Packet outp(destination,RR->identity.address(),Packet::VERB_RENDEZVOUS); - outp.append((uint8_t)0); - source.appendTo(outp); - outp.append((uint16_t)hintToDest->port()); - if (hintToDest->ss_family == AF_INET6) { - outp.append((uint8_t)16); - outp.append(hintToDest->rawIpData(),16); - } else { - outp.append((uint8_t)4); - outp.append(hintToDest->rawIpData(),4); - } - send(tPtr,outp,true); - } - ++alt; - } - } - } + if (sourcePeer) + relayTo->introduce(tPtr,now,sourcePeer); } } else { relayTo = RR->topology->getUpstreamPeer(); - if ((relayTo)&&(relayTo->address() != source)) - relayTo->sendDirect(tPtr,packet.data(),packet.size(),now,true); + if ((relayTo)&&(relayTo->address() != source)) { + if (relayTo->sendDirect(tPtr,packet.data(),packet.size(),now,true)) { + const SharedPtr<Peer> sourcePeer(RR->topology->getPeer(tPtr,source)); + if (sourcePeer) + relayTo->introduce(tPtr,now,sourcePeer); + } + } } } } else if ((reinterpret_cast<const uint8_t *>(data)[ZT_PACKET_IDX_FLAGS] & ZT_PROTO_FLAG_FRAGMENTED) != 0) { @@ -694,22 +648,7 @@ bool Switch::_trySend(void *tPtr,Packet &packet,bool encrypt) const SharedPtr<Peer> peer(RR->topology->getPeer(tPtr,destination)); if (peer) { - /* First get the best path, and if it's dead (and this is not a root) - * we attempt to re-activate that path but this packet will flow - * upstream. If the path comes back alive, it will be used in the future. - * For roots we don't do the alive check since roots are not required - * to send heartbeats "down" and because we have to at least try to - * go somewhere. */ - viaPath = peer->getBestPath(now,false); - if ( (viaPath) && (!viaPath->alive(now)) && (!RR->topology->isUpstream(peer->identity())) ) { - if ((now - viaPath->lastOut()) > std::max((now - viaPath->lastIn()) * 4,(int64_t)ZT_PATH_MIN_REACTIVATE_INTERVAL)) { - peer->attemptToContactAt(tPtr,viaPath->localSocket(),viaPath->address(),now,false,viaPath->nextOutgoingCounter()); - viaPath->sent(now); - } - viaPath.zero(); - } - if (!viaPath) { peer->tryMemorizedPath(tPtr,now); // periodically attempt memorized or statically defined paths, if any are known const SharedPtr<Peer> relay(RR->topology->getUpstreamPeer()); diff --git a/node/Topology.cpp b/node/Topology.cpp index d5fea569..d1b389df 100644 --- a/node/Topology.cpp +++ b/node/Topology.cpp @@ -431,7 +431,7 @@ void Topology::_savePeer(void *tPtr,const SharedPtr<Peer> &peer) { try { Buffer<ZT_PEER_MAX_SERIALIZED_STATE_SIZE> buf; - peer->serialize(buf); + peer->serializeForCache(buf); uint64_t tmpid[2]; tmpid[0] = peer->address().toInt(); tmpid[1] = 0; RR->node->stateObjectPut(tPtr,ZT_STATE_OBJECT_PEER,tmpid,buf.data(),buf.size()); } catch ( ... ) {} // sanity check, discard invalid entries diff --git a/node/Topology.hpp b/node/Topology.hpp index 650e5363..b09f95cf 100644 --- a/node/Topology.hpp +++ b/node/Topology.hpp @@ -300,7 +300,7 @@ public: SharedPtr<Peer> *p = (SharedPtr<Peer> *)0; while (i.next(a,p)) { const SharedPtr<Path> pp((*p)->getBestPath(now,false)); - if ((pp)&&(pp->alive(now))) + if (pp) ++cnt; } return cnt; diff --git a/node/Trace.cpp b/node/Trace.cpp index d90c3143..6d85942d 100644 --- a/node/Trace.cpp +++ b/node/Trace.cpp @@ -92,16 +92,13 @@ void Trace::peerLearnedNewPath(void *const tPtr,const uint64_t networkId,Peer &p _send(tPtr,d,networkId); } -void Trace::peerRedirected(void *const tPtr,const uint64_t networkId,Peer &peer,const SharedPtr<Path> &oldPath,const SharedPtr<Path> &newPath) +void Trace::peerRedirected(void *const tPtr,const uint64_t networkId,Peer &peer,const SharedPtr<Path> &newPath) { char tmp[128]; Dictionary<ZT_MAX_REMOTE_TRACE_SIZE> d; d.add(ZT_REMOTE_TRACE_FIELD__EVENT,ZT_REMOTE_TRACE_EVENT__PEER_REDIRECTED_S); d.add(ZT_REMOTE_TRACE_FIELD__NETWORK_ID,networkId); d.add(ZT_REMOTE_TRACE_FIELD__REMOTE_ZTADDR,peer.address()); - if (oldPath) { - d.add(ZT_REMOTE_TRACE_FIELD__OLD_REMOTE_PHYADDR,oldPath->address().toString(tmp)); - } if (newPath) { d.add(ZT_REMOTE_TRACE_FIELD__REMOTE_PHYADDR,newPath->address().toString(tmp)); d.add(ZT_REMOTE_TRACE_FIELD__LOCAL_SOCKET,newPath->localSocket()); diff --git a/node/Trace.hpp b/node/Trace.hpp index 5ee5b520..4192d1c2 100644 --- a/node/Trace.hpp +++ b/node/Trace.hpp @@ -105,7 +105,7 @@ public: void peerConfirmingUnknownPath(void *const tPtr,const uint64_t networkId,Peer &peer,const SharedPtr<Path> &path,const uint64_t packetId,const Packet::Verb verb); void peerLearnedNewPath(void *const tPtr,const uint64_t networkId,Peer &peer,const SharedPtr<Path> &oldPath,const SharedPtr<Path> &newPath,const uint64_t packetId); - void peerRedirected(void *const tPtr,const uint64_t networkId,Peer &peer,const SharedPtr<Path> &oldPath,const SharedPtr<Path> &newPath); + void peerRedirected(void *const tPtr,const uint64_t networkId,Peer &peer,const SharedPtr<Path> &newPath); void incomingPacketMessageAuthenticationFailure(void *const tPtr,const SharedPtr<Path> &path,const uint64_t packetId,const Address &source,const unsigned int hops,const char *reason); void incomingPacketInvalid(void *const tPtr,const SharedPtr<Path> &path,const uint64_t packetId,const Address &source,const unsigned int hops,const Packet::Verb verb,const char *reason); |