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Add a bunch of high-resolution try/catch safety in Node main loop to attempt to snare gremlin.

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This commit is contained in:
Adam Ierymenko 2014-11-21 11:54:06 -08:00
parent 959f611a65
commit 0bcac1fd79
1 changed files with 55 additions and 27 deletions
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82
node/Node.cpp
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@ -607,46 +607,74 @@ Node::ReasonForTermination Node::run()
}
// Update network configurations when needed.
if ((resynchronize)||((now - lastNetworkAutoconfCheck) >= ZT_NETWORK_AUTOCONF_CHECK_DELAY)) {
lastNetworkAutoconfCheck = now;
std::vector< SharedPtr<Network> > nets(RR->nc->networks());
for(std::vector< SharedPtr<Network> >::iterator n(nets.begin());n!=nets.end();++n) {
if ((now - (*n)->lastConfigUpdate()) >= ZT_NETWORK_AUTOCONF_DELAY)
(*n)->requestConfiguration();
try {
if ((resynchronize)||((now - lastNetworkAutoconfCheck) >= ZT_NETWORK_AUTOCONF_CHECK_DELAY)) {
lastNetworkAutoconfCheck = now;
std::vector< SharedPtr<Network> > nets(RR->nc->networks());
for(std::vector< SharedPtr<Network> >::iterator n(nets.begin());n!=nets.end();++n) {
if ((now - (*n)->lastConfigUpdate()) >= ZT_NETWORK_AUTOCONF_DELAY)
(*n)->requestConfiguration();
}
}
} catch ( ... ) {
LOG("unexpected exception updating network configurations (non-fatal, will retry)");
}
// Do periodic tasks in submodules.
if ((now - lastClean) >= ZT_DB_CLEAN_PERIOD) {
lastClean = now;
RR->topology->clean(now);
RR->mc->clean(now);
RR->nc->clean();
if (RR->updater)
RR->updater->checkIfMaxIntervalExceeded(now);
try {
RR->topology->clean(now);
} catch ( ... ) {
LOG("unexpected exception in Topology::clean() (non-fatal)");
}
try {
RR->mc->clean(now);
} catch ( ... ) {
LOG("unexpected exception in Multicaster::clean() (non-fatal)");
}
try {
RR->nc->clean();
} catch ( ... ) {
LOG("unexpected exception in NodeConfig::clean() (non-fatal)");
}
try {
if (RR->updater)
RR->updater->checkIfMaxIntervalExceeded(now);
} catch ( ... ) {
LOG("unexpected exception in SoftwareUpdater::checkIfMaxIntervalExceeded() (non-fatal)");
}
}
// Send beacons to physical local LANs
if ((resynchronize)||((now - lastBeacon) >= ZT_BEACON_INTERVAL)) {
lastBeacon = now;
char bcn[ZT_PROTO_BEACON_LENGTH];
void *bcnptr = bcn;
*((uint32_t *)(bcnptr)) = RR->prng->next32();
bcnptr = bcn + 4;
*((uint32_t *)(bcnptr)) = RR->prng->next32();
RR->identity.address().copyTo(bcn + ZT_PROTO_BEACON_IDX_ADDRESS,ZT_ADDRESS_LENGTH);
TRACE("sending LAN beacon to %s",ZT_DEFAULTS.v4Broadcast.toString().c_str());
RR->antiRec->logOutgoingZT(bcn,ZT_PROTO_BEACON_LENGTH);
RR->sm->send(ZT_DEFAULTS.v4Broadcast,false,false,bcn,ZT_PROTO_BEACON_LENGTH);
try {
if ((resynchronize)||((now - lastBeacon) >= ZT_BEACON_INTERVAL)) {
lastBeacon = now;
char bcn[ZT_PROTO_BEACON_LENGTH];
void *bcnptr = bcn;
*((uint32_t *)(bcnptr)) = RR->prng->next32();
bcnptr = bcn + 4;
*((uint32_t *)(bcnptr)) = RR->prng->next32();
RR->identity.address().copyTo(bcn + ZT_PROTO_BEACON_IDX_ADDRESS,ZT_ADDRESS_LENGTH);
TRACE("sending LAN beacon to %s",ZT_DEFAULTS.v4Broadcast.toString().c_str());
RR->antiRec->logOutgoingZT(bcn,ZT_PROTO_BEACON_LENGTH);
RR->sm->send(ZT_DEFAULTS.v4Broadcast,false,false,bcn,ZT_PROTO_BEACON_LENGTH);
}
} catch ( ... ) {
LOG("unexpected exception sending LAN beacon (non-fatal)");
}
// Check for updates to root topology (supernodes) periodically
if ((now - lastRootTopologyFetch) >= ZT_UPDATE_ROOT_TOPOLOGY_CHECK_INTERVAL) {
lastRootTopologyFetch = now;
if (!impl->disableRootTopologyUpdates) {
TRACE("fetching root topology from %s",ZT_DEFAULTS.rootTopologyUpdateURL.c_str());
RR->http->GET(ZT_DEFAULTS.rootTopologyUpdateURL,HttpClient::NO_HEADERS,60,&_cbHandleGetRootTopology,RR);
try {
if ((now - lastRootTopologyFetch) >= ZT_UPDATE_ROOT_TOPOLOGY_CHECK_INTERVAL) {
lastRootTopologyFetch = now;
if (!impl->disableRootTopologyUpdates) {
TRACE("fetching root topology from %s",ZT_DEFAULTS.rootTopologyUpdateURL.c_str());
RR->http->GET(ZT_DEFAULTS.rootTopologyUpdateURL,HttpClient::NO_HEADERS,60,&_cbHandleGetRootTopology,RR);
}
}
} catch ( ... ) {
LOG("unexpected exception attempting to check for root topology updates (non-fatal)");
}
// Sleep for loop interval or until something interesting happens.