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Clustering cleanup, still a work in progress.

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This commit is contained in:
Adam Ierymenko 2015-11-06 16:12:41 -08:00
parent 5f39d5b7ea
commit 6bc8c9d8ef
5 changed files with 83 additions and 119 deletions
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2
include/ZeroTierOne.h
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@ -912,7 +912,7 @@ typedef struct {
uint64_t load; uint64_t load;
/** /**
* Number of peers this cluster member "has" * Number of peers
*/ */
uint64_t peers; uint64_t peers;

109
node/Cluster.cpp
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@ -184,6 +184,7 @@ void Cluster::handleIncomingStateMessage(const void *msg,unsigned int len)
m.z = dmsg.at<int32_t>(ptr); ptr += 4; m.z = dmsg.at<int32_t>(ptr); ptr += 4;
ptr += 8; // skip local clock, not used ptr += 8; // skip local clock, not used
m.load = dmsg.at<uint64_t>(ptr); ptr += 8; m.load = dmsg.at<uint64_t>(ptr); ptr += 8;
m.peers = dmsg.at<uint64_t>(ptr); ptr += 8;
ptr += 8; // skip flags, unused ptr += 8; // skip flags, unused
#ifdef ZT_TRACE #ifdef ZT_TRACE
std::string addrs; std::string addrs;
@ -215,12 +216,22 @@ void Cluster::handleIncomingStateMessage(const void *msg,unsigned int len)
case STATE_MESSAGE_HAVE_PEER: { case STATE_MESSAGE_HAVE_PEER: {
const Address zeroTierAddress(dmsg.field(ptr,ZT_ADDRESS_LENGTH),ZT_ADDRESS_LENGTH); ptr += ZT_ADDRESS_LENGTH; const Address zeroTierAddress(dmsg.field(ptr,ZT_ADDRESS_LENGTH),ZT_ADDRESS_LENGTH); ptr += ZT_ADDRESS_LENGTH;
Mutex::Lock _l2(_peerAffinities_m); Mutex::Lock _l2(_peerAffinities_m);
_PA &pa = _peerAffinities[zeroTierAddress]; _peerAffinities.set(zeroTierAddress,fromMemberId);
pa.ts = RR->node->now();
pa.mid = fromMemberId;
TRACE("[%u] has %s @ %s",(unsigned int)fromMemberId,id.address().toString().c_str(),physicalAddress.toString().c_str()); TRACE("[%u] has %s @ %s",(unsigned int)fromMemberId,id.address().toString().c_str(),physicalAddress.toString().c_str());
} break; } break;
case STATE_MESSAGE_WANT_PEER: {
const Address zeroTierAddress(dmsg.field(ptr,ZT_ADDRESS_LENGTH),ZT_ADDRESS_LENGTH); ptr += ZT_ADDRESS_LENGTH;
SharedPtr<Peer> peer(RR->topology->getPeerNoCache(zeroTierAddress));
if ((peer)&&(peer->hasActiveDirectPath(RR->node->now()))) {
char buf[ZT_ADDRESS_LENGTH];
peer->address().copyTo(buf,ZT_ADDRESS_LENGTH);
Mutex::Lock _l2(_members[fromMemberId].lock);
_send(fromMemberId,STATE_MESSAGE_HAVE_PEER,buf,ZT_ADDRESS_LENGTH);
_flush(fromMemberId);
}
} break;
case STATE_MESSAGE_MULTICAST_LIKE: { case STATE_MESSAGE_MULTICAST_LIKE: {
const uint64_t nwid = dmsg.at<uint64_t>(ptr); ptr += 8; const uint64_t nwid = dmsg.at<uint64_t>(ptr); ptr += 8;
const Address address(dmsg.field(ptr,ZT_ADDRESS_LENGTH),ZT_ADDRESS_LENGTH); ptr += ZT_ADDRESS_LENGTH; const Address address(dmsg.field(ptr,ZT_ADDRESS_LENGTH),ZT_ADDRESS_LENGTH); ptr += ZT_ADDRESS_LENGTH;
@ -311,7 +322,7 @@ void Cluster::handleIncomingStateMessage(const void *msg,unsigned int len)
if (haveMatch) { if (haveMatch) {
_send(fromMemberId,STATE_MESSAGE_PROXY_SEND,rendezvousForRemote.data(),rendezvousForRemote.size()); _send(fromMemberId,STATE_MESSAGE_PROXY_SEND,rendezvousForRemote.data(),rendezvousForRemote.size());
_flush(fromMemberId); // we want this to go ASAP, since with port restricted cone NATs success can be timing-sensitive _flush(fromMemberId);
RR->sw->send(rendezvousForLocal,true,0); RR->sw->send(rendezvousForLocal,true,0);
} }
} }
@ -349,12 +360,22 @@ bool Cluster::sendViaCluster(const Address &fromPeerAddress,const Address &toPee
const uint64_t now = RR->node->now(); const uint64_t now = RR->node->now();
unsigned int canHasPeer = 0; unsigned int canHasPeer = 0;
{ // Anyone got this peer? {
Mutex::Lock _l2(_peerAffinities_m); Mutex::Lock _l2(_peerAffinities_m);
_PA *pa = _peerAffinities.get(toPeerAddress); const unsigned int *pa = _peerAffinities.get(toPeerAddress);
if ((pa)&&(pa->mid != _id)&&((now - pa->ts) < ZT_PEER_ACTIVITY_TIMEOUT)) if (!pa) {
canHasPeer = pa->mid; char buf[ZT_ADDRESS_LENGTH];
else return false; peerId.address().copyTo(buf,ZT_ADDRESS_LENGTH);
{
Mutex::Lock _l(_memberIds_m);
for(std::vector<uint16_t>::const_iterator mid(_memberIds.begin());mid!=_memberIds.end();++mid) {
Mutex::Lock _l2(_members[*mid].lock);
_send(*mid,STATE_MESSAGE_WANT_PEER,buf,ZT_ADDRESS_LENGTH);
}
}
return false;
}
canHasPeer = *pa;
} }
Buffer<1024> buf; Buffer<1024> buf;
@ -395,22 +416,6 @@ bool Cluster::sendViaCluster(const Address &fromPeerAddress,const Address &toPee
void Cluster::replicateHavePeer(const Identity &peerId) void Cluster::replicateHavePeer(const Identity &peerId)
{ {
const uint64_t now = RR->node->now();
{
Mutex::Lock _l2(_peerAffinities_m);
_PA &pa = _peerAffinities[peerId.address()];
if (pa.mid != _id) {
pa.ts = now;
pa.mid = _id;
// fall through to send code below
} else if ((now - pa.ts) < ZT_CLUSTER_HAVE_PEER_ANNOUNCE_PERIOD) {
return;
} else {
pa.ts = now;
// fall through to send code below
}
}
char buf[ZT_ADDRESS_LENGTH]; char buf[ZT_ADDRESS_LENGTH];
peerId.address().copyTo(buf,ZT_ADDRESS_LENGTH); peerId.address().copyTo(buf,ZT_ADDRESS_LENGTH);
{ {
@ -455,44 +460,9 @@ void Cluster::replicateCertificateOfNetworkMembership(const CertificateOfMembers
*/ */
} }
struct _ClusterAnnouncePeers
{
_ClusterAnnouncePeers(const uint64_t now_,Cluster *parent_) : now(now_),parent(parent_) {}
const uint64_t now;
Cluster *const parent;
inline void operator()(const Topology &t,const SharedPtr<Peer> &peer) const
{
if (peer->hasActiveDirectPath(now))
parent->replicateHavePeer(peer->identity());
}
};
void Cluster::doPeriodicTasks() void Cluster::doPeriodicTasks()
{ {
const uint64_t now = RR->node->now(); const uint64_t now = RR->node->now();
// Erase old peer affinity entries just to control table size
if ((now - _lastCleanedPeerAffinities) >= (ZT_PEER_ACTIVITY_TIMEOUT * 5)) {
_lastCleanedPeerAffinities = now;
Address *k = (Address *)0;
_PA *v = (_PA *)0;
Mutex::Lock _l(_peerAffinities_m);
Hashtable< Address,_PA >::Iterator i(_peerAffinities);
while (i.next(k,v)) {
if ((now - v->ts) >= (ZT_PEER_ACTIVITY_TIMEOUT * 5))
_peerAffinities.erase(*k);
}
}
// Announce peers that we have active direct paths to -- note that we forget paths
// that other cluster members claim they have, which prevents us from fighting
// with other cluster members (route flapping) over specific paths.
if ((now - _lastCheckedPeersForAnnounce) >= (ZT_CLUSTER_HAVE_PEER_ANNOUNCE_PERIOD / 4)) {
_lastCheckedPeersForAnnounce = now;
_ClusterAnnouncePeers func(now,this);
RR->topology->eachPeer<_ClusterAnnouncePeers &>(func);
}
// Flush outgoing packet send queue every doPeriodicTasks()
if ((now - _lastFlushed) >= ZT_CLUSTER_FLUSH_PERIOD) { if ((now - _lastFlushed) >= ZT_CLUSTER_FLUSH_PERIOD) {
_lastFlushed = now; _lastFlushed = now;
Mutex::Lock _l(_memberIds_m); Mutex::Lock _l(_memberIds_m);
@ -516,6 +486,7 @@ void Cluster::doPeriodicTasks()
} }
alive.append((uint64_t)now); alive.append((uint64_t)now);
alive.append((uint64_t)0); // TODO: compute and send load average alive.append((uint64_t)0); // TODO: compute and send load average
alive.append((uint64_t)RR->topology->countActive());
alive.append((uint64_t)0); // unused/reserved flags alive.append((uint64_t)0); // unused/reserved flags
alive.append((uint8_t)_zeroTierPhysicalEndpoints.size()); alive.append((uint8_t)_zeroTierPhysicalEndpoints.size());
for(std::vector<InetAddress>::const_iterator pe(_zeroTierPhysicalEndpoints.begin());pe!=_zeroTierPhysicalEndpoints.end();++pe) for(std::vector<InetAddress>::const_iterator pe(_zeroTierPhysicalEndpoints.begin());pe!=_zeroTierPhysicalEndpoints.end();++pe)
@ -630,8 +601,6 @@ void Cluster::status(ZT_ClusterStatus &status) const
{ {
const uint64_t now = RR->node->now(); const uint64_t now = RR->node->now();
memset(&status,0,sizeof(ZT_ClusterStatus)); memset(&status,0,sizeof(ZT_ClusterStatus));
ZT_ClusterMemberStatus *ms[ZT_CLUSTER_MAX_MEMBERS];
memset(ms,0,sizeof(ms));
status.myId = _id; status.myId = _id;
@ -641,6 +610,7 @@ void Cluster::status(ZT_ClusterStatus &status) const
ms[_id]->x = _x; ms[_id]->x = _x;
ms[_id]->y = _y; ms[_id]->y = _y;
ms[_id]->z = _z; ms[_id]->z = _z;
ms[_id]->load = 0; // TODO
ms[_id]->peers = RR->topology->countActive(); ms[_id]->peers = RR->topology->countActive();
for(std::vector<InetAddress>::const_iterator ep(_zeroTierPhysicalEndpoints.begin());ep!=_zeroTierPhysicalEndpoints.end();++ep) { for(std::vector<InetAddress>::const_iterator ep(_zeroTierPhysicalEndpoints.begin());ep!=_zeroTierPhysicalEndpoints.end();++ep) {
if (ms[_id]->numZeroTierPhysicalEndpoints >= ZT_CLUSTER_MAX_ZT_PHYSICAL_ADDRESSES) // sanity check if (ms[_id]->numZeroTierPhysicalEndpoints >= ZT_CLUSTER_MAX_ZT_PHYSICAL_ADDRESSES) // sanity check
@ -653,10 +623,11 @@ void Cluster::status(ZT_ClusterStatus &status) const
for(std::vector<uint16_t>::const_iterator mid(_memberIds.begin());mid!=_memberIds.end();++mid) { for(std::vector<uint16_t>::const_iterator mid(_memberIds.begin());mid!=_memberIds.end();++mid) {
if (status.clusterSize >= ZT_CLUSTER_MAX_MEMBERS) // sanity check if (status.clusterSize >= ZT_CLUSTER_MAX_MEMBERS) // sanity check
break; break;
ZT_ClusterMemberStatus *s = ms[*mid] = &(status.members[status.clusterSize++]);
_Member &m = _members[*mid]; _Member &m = _members[*mid];
Mutex::Lock ml(m.lock); Mutex::Lock ml(m.lock);
ZT_ClusterMemberStatus *const s = &(status.members[status.clusterSize++]);
s->id = *mid; s->id = *mid;
s->msSinceLastHeartbeat = (unsigned int)std::min((uint64_t)(~((unsigned int)0)),(now - m.lastReceivedAliveAnnouncement)); s->msSinceLastHeartbeat = (unsigned int)std::min((uint64_t)(~((unsigned int)0)),(now - m.lastReceivedAliveAnnouncement));
s->alive = (s->msSinceLastHeartbeat < ZT_CLUSTER_TIMEOUT) ? 1 : 0; s->alive = (s->msSinceLastHeartbeat < ZT_CLUSTER_TIMEOUT) ? 1 : 0;
@ -664,6 +635,7 @@ void Cluster::status(ZT_ClusterStatus &status) const
s->y = m.y; s->y = m.y;
s->z = m.z; s->z = m.z;
s->load = m.load; s->load = m.load;
s->peers = m.peers;
for(std::vector<InetAddress>::const_iterator ep(m.zeroTierPhysicalEndpoints.begin());ep!=m.zeroTierPhysicalEndpoints.end();++ep) { for(std::vector<InetAddress>::const_iterator ep(m.zeroTierPhysicalEndpoints.begin());ep!=m.zeroTierPhysicalEndpoints.end();++ep) {
if (s->numZeroTierPhysicalEndpoints >= ZT_CLUSTER_MAX_ZT_PHYSICAL_ADDRESSES) // sanity check if (s->numZeroTierPhysicalEndpoints >= ZT_CLUSTER_MAX_ZT_PHYSICAL_ADDRESSES) // sanity check
break; break;
@ -671,17 +643,6 @@ void Cluster::status(ZT_ClusterStatus &status) const
} }
} }
} }
{
Mutex::Lock _l2(_peerAffinities_m);
Address *k = (Address *)0;
_PA *v = (_PA *)0;
Hashtable< Address,_PA >::Iterator i(const_cast<Cluster *>(this)->_peerAffinities);
while (i.next(k,v)) {
if ( (ms[v->mid]) && (v->mid != _id) && ((now - v->ts) < ZT_PEER_ACTIVITY_TIMEOUT) )
++ms[v->mid]->peers;
}
}
} }
void Cluster::_send(uint16_t memberId,StateMessageType type,const void *msg,unsigned int len) void Cluster::_send(uint16_t memberId,StateMessageType type,const void *msg,unsigned int len)

34
node/Cluster.hpp
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@ -52,11 +52,6 @@
*/ */
#define ZT_CLUSTER_TIMEOUT 10000 #define ZT_CLUSTER_TIMEOUT 10000
/**
* How often should we announce that we have a peer?
*/
#define ZT_CLUSTER_HAVE_PEER_ANNOUNCE_PERIOD ((ZT_PEER_DIRECT_PING_DELAY / 2) - 1000)
/** /**
* Desired period between doPeriodicTasks() in milliseconds * Desired period between doPeriodicTasks() in milliseconds
*/ */
@ -116,6 +111,7 @@ public:
* <[4] Z location (signed 32-bit)> * <[4] Z location (signed 32-bit)>
* <[8] local clock at this member> * <[8] local clock at this member>
* <[8] load average> * <[8] load average>
* <[8] number of peers>
* <[8] flags (currently unused, must be zero)> * <[8] flags (currently unused, must be zero)>
* <[1] number of preferred ZeroTier endpoints> * <[1] number of preferred ZeroTier endpoints>
* <[...] InetAddress(es) of preferred ZeroTier endpoint(s)> * <[...] InetAddress(es) of preferred ZeroTier endpoint(s)>
@ -128,6 +124,12 @@ public:
*/ */
STATE_MESSAGE_HAVE_PEER = 2, STATE_MESSAGE_HAVE_PEER = 2,
/**
* Cluster member wants this peer:
* <[5] ZeroTier address of peer>
*/
STATE_MESSAGE_WANT_PEER = 3,
/** /**
* Peer subscription to multicast group: * Peer subscription to multicast group:
* <[8] network ID> * <[8] network ID>
@ -135,13 +137,13 @@ public:
* <[6] MAC address of multicast group> * <[6] MAC address of multicast group>
* <[4] 32-bit multicast group ADI> * <[4] 32-bit multicast group ADI>
*/ */
STATE_MESSAGE_MULTICAST_LIKE = 3, STATE_MESSAGE_MULTICAST_LIKE = 4,
/** /**
* Certificate of network membership for a peer: * Certificate of network membership for a peer:
* <[...] serialized COM> * <[...] serialized COM>
*/ */
STATE_MESSAGE_COM = 4, STATE_MESSAGE_COM = 5,
/** /**
* Request that VERB_RENDEZVOUS be sent to a peer that we have: * Request that VERB_RENDEZVOUS be sent to a peer that we have:
@ -155,7 +157,7 @@ public:
* info for its peer, and we send VERB_RENDEZVOUS to both sides: to ours * info for its peer, and we send VERB_RENDEZVOUS to both sides: to ours
* directly and with PROXY_SEND to theirs. * directly and with PROXY_SEND to theirs.
*/ */
STATE_MESSAGE_PROXY_UNITE = 5, STATE_MESSAGE_PROXY_UNITE = 6,
/** /**
* Request that a cluster member send a packet to a locally-known peer: * Request that a cluster member send a packet to a locally-known peer:
@ -171,7 +173,7 @@ public:
* while PROXY_SEND is used to implement proxy sending (which right * while PROXY_SEND is used to implement proxy sending (which right
* now is only used to send RENDEZVOUS). * now is only used to send RENDEZVOUS).
*/ */
STATE_MESSAGE_PROXY_SEND = 6, STATE_MESSAGE_PROXY_SEND = 7,
/** /**
* Replicate a network config for a network we belong to: * Replicate a network config for a network we belong to:
@ -184,7 +186,7 @@ public:
* *
* TODO: not implemented yet! * TODO: not implemented yet!
*/ */
STATE_MESSAGE_NETWORK_CONFIG = 7 STATE_MESSAGE_NETWORK_CONFIG = 8
}; };
/** /**
@ -316,6 +318,7 @@ private:
uint64_t lastAnnouncedAliveTo; uint64_t lastAnnouncedAliveTo;
uint64_t load; uint64_t load;
uint64_t peers;
int32_t x,y,z; int32_t x,y,z;
std::vector<InetAddress> zeroTierPhysicalEndpoints; std::vector<InetAddress> zeroTierPhysicalEndpoints;
@ -329,6 +332,7 @@ private:
lastReceivedAliveAnnouncement = 0; lastReceivedAliveAnnouncement = 0;
lastAnnouncedAliveTo = 0; lastAnnouncedAliveTo = 0;
load = 0; load = 0;
peers = 0;
x = 0; x = 0;
y = 0; y = 0;
z = 0; z = 0;
@ -344,17 +348,9 @@ private:
std::vector<uint16_t> _memberIds; std::vector<uint16_t> _memberIds;
Mutex _memberIds_m; Mutex _memberIds_m;
struct _PA Hashtable< Address,unsigned int > _peerAffinities;
{
_PA() : ts(0),mid(0xffffffff) {}
uint64_t ts;
unsigned int mid;
};
Hashtable< Address,_PA > _peerAffinities;
Mutex _peerAffinities_m; Mutex _peerAffinities_m;
uint64_t _lastCleanedPeerAffinities;
uint64_t _lastCheckedPeersForAnnounce;
uint64_t _lastFlushed; uint64_t _lastFlushed;
}; };

21
node/Peer.cpp
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@ -156,8 +156,15 @@ void Peer::received(
} }
} }
if (!pathIsConfirmed) { if (pathIsConfirmed) {
if ((verb == Packet::VERB_OK)||(RR->topology->amRoot())) {
#ifdef ZT_ENABLE_CLUSTER
if ((RR->cluster)&&(verb == Packet::VERB_HELLO))
RR->cluster->replicateHavePeer(_id);
#endif
} else {
if (verb == Packet::VERB_OK) {
Path *slot = (Path *)0; Path *slot = (Path *)0;
if (np < ZT_MAX_PEER_NETWORK_PATHS) { if (np < ZT_MAX_PEER_NETWORK_PATHS) {
@ -179,6 +186,11 @@ void Peer::received(
_sortPaths(now); _sortPaths(now);
} }
#ifdef ZT_ENABLE_CLUSTER
if (RR->cluster)
RR->cluster->replicateHavePeer(_id);
#endif
} else { } else {
/* If this path is not known, send a HELLO. We don't learn /* If this path is not known, send a HELLO. We don't learn
@ -196,11 +208,6 @@ void Peer::received(
} }
} // end _lock } // end _lock
#ifdef ZT_ENABLE_CLUSTER
if ((RR->cluster)&&(pathIsConfirmed))
RR->cluster->replicateHavePeer(_id);
#endif
if (needMulticastGroupAnnounce) { if (needMulticastGroupAnnounce) {
const std::vector< SharedPtr<Network> > networks(RR->node->allNetworks()); const std::vector< SharedPtr<Network> > networks(RR->node->allNetworks());
for(std::vector< SharedPtr<Network> >::const_iterator n(networks.begin());n!=networks.end();++n) for(std::vector< SharedPtr<Network> >::const_iterator n(networks.begin());n!=networks.end();++n)

26
node/Switch.cpp
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@ -616,15 +616,15 @@ void Switch::_handleRemotePacketFragment(const InetAddress &localAddr,const Inet
if (fragment.hops() < ZT_RELAY_MAX_HOPS) { if (fragment.hops() < ZT_RELAY_MAX_HOPS) {
fragment.incrementHops(); fragment.incrementHops();
// Note: we don't bother initiating NAT-t for fragments, since heads will set that off.
// It wouldn't hurt anything, just redundant and unnecessary.
SharedPtr<Peer> relayTo = RR->topology->getPeer(destination);
if ((!relayTo)||(!relayTo->send(RR,fragment.data(),fragment.size(),RR->node->now()))) {
#ifdef ZT_ENABLE_CLUSTER #ifdef ZT_ENABLE_CLUSTER
if ((RR->cluster)&&(RR->cluster->sendViaCluster(Address(),destination,fragment.data(),fragment.size(),false))) if ((RR->cluster)&&(RR->cluster->sendViaCluster(Address(),destination,fragment.data(),fragment.size(),false)))
return; return;
#endif #endif
// Note: we don't bother initiating NAT-t for fragments, since heads will set that off.
// It wouldn't hurt anything, just redundant and unnecessary.
SharedPtr<Peer> relayTo = RR->topology->getPeer(destination);
if ((!relayTo)||(!relayTo->send(RR,fragment.data(),fragment.size(),RR->node->now()))) {
// Don't know peer or no direct path -- so relay via root server // Don't know peer or no direct path -- so relay via root server
relayTo = RR->topology->getBestRoot(); relayTo = RR->topology->getBestRoot();
if (relayTo) if (relayTo)
@ -702,6 +702,15 @@ void Switch::_handleRemotePacketHead(const InetAddress &localAddr,const InetAddr
if (packet->hops() < ZT_RELAY_MAX_HOPS) { if (packet->hops() < ZT_RELAY_MAX_HOPS) {
packet->incrementHops(); packet->incrementHops();
SharedPtr<Peer> relayTo = RR->topology->getPeer(destination);
if ((relayTo)&&((relayTo->send(RR,packet->data(),packet->size(),now)))) {
Mutex::Lock _l(_lastUniteAttempt_m);
uint64_t &luts = _lastUniteAttempt[_LastUniteKey(source,destination)];
if ((now - luts) >= ZT_MIN_UNITE_INTERVAL) {
luts = now;
unite(source,destination);
}
} else {
#ifdef ZT_ENABLE_CLUSTER #ifdef ZT_ENABLE_CLUSTER
if (RR->cluster) { if (RR->cluster) {
Mutex::Lock _l(_lastUniteAttempt_m); Mutex::Lock _l(_lastUniteAttempt_m);
@ -715,15 +724,6 @@ void Switch::_handleRemotePacketHead(const InetAddress &localAddr,const InetAddr
} }
#endif #endif
SharedPtr<Peer> relayTo = RR->topology->getPeer(destination);
if ((relayTo)&&((relayTo->send(RR,packet->data(),packet->size(),now)))) {
Mutex::Lock _l(_lastUniteAttempt_m);
uint64_t &luts = _lastUniteAttempt[_LastUniteKey(source,destination)];
if ((now - luts) >= ZT_MIN_UNITE_INTERVAL) {
luts = now;
unite(source,destination);
}
} else {
relayTo = RR->topology->getBestRoot(&source,1,true); relayTo = RR->topology->getBestRoot(&source,1,true);
if (relayTo) if (relayTo)
relayTo->send(RR,packet->data(),packet->size(),now); relayTo->send(RR,packet->data(),packet->size(),now);