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Merge pull request #11244 from birarda/bug/ice-dns-fail

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add a timeout for ICE server DNS lookup
This commit is contained in:
Brad Hefta-Gaub 2017-09-07 11:09:05 -07:00 committed by GitHub
commit 7cce45017b
2 changed files with 26 additions and 2 deletions
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22
domain-server/src/DomainServer.cpp
View file

@ -752,8 +752,28 @@ void DomainServer::setupICEHeartbeatForFullNetworking() {
}
void DomainServer::updateICEServerAddresses() {
if (_iceAddressLookupID == -1) {
if (_iceAddressLookupID == INVALID_ICE_LOOKUP_ID) {
_iceAddressLookupID = QHostInfo::lookupHost(_iceServerAddr, this, SLOT(handleICEHostInfo(QHostInfo)));
// there seems to be a 5.9 bug where lookupHost never calls our slot
// so we add a single shot manual "timeout" to fire it off again if it hasn't called back yet
static const int ICE_ADDRESS_LOOKUP_TIMEOUT_MS = 5000;
QTimer::singleShot(ICE_ADDRESS_LOOKUP_TIMEOUT_MS, this, &DomainServer::timeoutICEAddressLookup);
}
}
void DomainServer::timeoutICEAddressLookup() {
if (_iceAddressLookupID != INVALID_ICE_LOOKUP_ID) {
// we waited 5s and didn't hear back for our ICE DNS lookup
// so time that one out and kick off another
qDebug() << "IP address lookup timed out for" << _iceServerAddr << "- retrying";
QHostInfo::abortHostLookup(_iceAddressLookupID);
_iceAddressLookupID = INVALID_ICE_LOOKUP_ID;
updateICEServerAddresses();
}
}

6
domain-server/src/DomainServer.h
View file

@ -39,6 +39,8 @@ typedef QMultiHash<QUuid, WalletTransaction*> TransactionHash;
using Subnet = QPair<QHostAddress, int>;
using SubnetList = std::vector<Subnet>;
const int INVALID_ICE_LOOKUP_ID = -1;
enum ReplicationServerDirection {
Upstream,
Downstream
@ -114,6 +116,8 @@ private slots:
void tokenGrantFinished();
void profileRequestFinished();
void timeoutICEAddressLookup();
signals:
void iceServerChanged();
void userConnected();
@ -223,7 +227,7 @@ private:
QList<QHostAddress> _iceServerAddresses;
QSet<QHostAddress> _failedIceServerAddresses;
int _iceAddressLookupID { -1 };
int _iceAddressLookupID { INVALID_ICE_LOOKUP_ID };
int _noReplyICEHeartbeats { 0 };
int _numHeartbeatDenials { 0 };
bool _connectedToICEServer { false };