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More multicast work...

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This commit is contained in:
Adam Ierymenko 2019-09-10 16:20:28 -07:00
parent 592e743349
commit bccb86a401
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GPG key ID: C8877CF2D7A5D7F3
7 changed files with 410 additions and 230 deletions
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43
node/Network.cpp
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@ -1065,6 +1065,43 @@ void Network::doPeriodicTasks(void *tPtr,const int64_t now)
}
}
void Network::learnBridgeRoute(const MAC &mac,const Address &addr)
{
Mutex::Lock _l(_remoteBridgeRoutes_l);
_remoteBridgeRoutes[mac] = addr;
// Anti-DOS circuit breaker to prevent nodes from spamming us with absurd numbers of bridge routes
while (_remoteBridgeRoutes.size() > ZT_MAX_BRIDGE_ROUTES) {
Hashtable< Address,unsigned long > counts;
Address maxAddr;
unsigned long maxCount = 0;
MAC *m = (MAC *)0;
Address *a = (Address *)0;
// Find the address responsible for the most entries
{
Hashtable<MAC,Address>::Iterator i(_remoteBridgeRoutes);
while (i.next(m,a)) {
const unsigned long c = ++counts[*a];
if (c > maxCount) {
maxCount = c;
maxAddr = *a;
}
}
}
// Kill this address from our table, since it's most likely spamming us
{
Hashtable<MAC,Address>::Iterator i(_remoteBridgeRoutes);
while (i.next(m,a)) {
if (*a == maxAddr)
_remoteBridgeRoutes.erase(*m);
}
}
}
}
Membership::AddCredentialResult Network::addCredential(void *tPtr,const Address &sentFrom,const Revocation &rev)
{
if (rev.networkId() != _id)
@ -1300,7 +1337,11 @@ void Network::_externalConfig(ZT_VirtualNetworkConfig *ec) const
ec->type = (_config) ? (_config.isPrivate() ? ZT_NETWORK_TYPE_PRIVATE : ZT_NETWORK_TYPE_PUBLIC) : ZT_NETWORK_TYPE_PRIVATE;
ec->mtu = (_config) ? _config.mtu : ZT_DEFAULT_MTU;
ec->dhcp = 0;
std::vector<Address> ab(_config.activeBridges());
std::vector<Address> ab;
for(unsigned int i=0;i<_config.specialistCount;++i) {
if ((_config.specialists[i] & ZT_NETWORKCONFIG_SPECIALIST_TYPE_ACTIVE_BRIDGE) != 0)
ab.push_back(Address(_config.specialists[i]));
}
ec->bridge = (std::find(ab.begin(),ab.end(),RR->identity.address()) != ab.end()) ? 1 : 0;
ec->broadcastEnabled = (_config) ? (_config.enableBroadcast() ? 1 : 0) : 0;
ec->portError = _portError;