void
nsHostResolver::ThreadFunc(void *arg)
{
LOG(("DNS lookup thread starting execution.\n"));
static nsThreadPoolNaming naming;
naming.SetThreadPoolName(NS_LITERAL_CSTRING("DNS Resolver"));
#if defined(RES_RETRY_ON_FAILURE)
nsResState rs;
#endif
nsHostResolver *resolver = (nsHostResolver *)arg;
nsHostRecord *rec;
PRAddrInfo *prai = nullptr;
while (resolver->GetHostToLookup(&rec)) {
LOG(("Calling getaddrinfo for host [%s].\n", rec->host));
int flags = PR_AI_ADDRCONFIG;
if (!(rec->flags & RES_CANON_NAME))
flags |= PR_AI_NOCANONNAME;
TimeStamp startTime = TimeStamp::Now();
prai = PR_GetAddrInfoByName(rec->host, rec->af, flags);
#if defined(RES_RETRY_ON_FAILURE)
if (!prai && rs.Reset())
prai = PR_GetAddrInfoByName(rec->host, rec->af, flags);
#endif
TimeDuration elapsed = TimeStamp::Now() - startTime;
uint32_t millis = static_cast<uint32_t>(elapsed.ToMilliseconds());
// convert error code to nsresult
nsresult status;
AddrInfo *ai = nullptr;
if (prai) {
ai = new AddrInfo(rec->host, prai);
PR_FreeAddrInfo(prai);
status = NS_OK;
Telemetry::Accumulate(!rec->addr_info_gencnt ?
Telemetry::DNS_LOOKUP_TIME :
Telemetry::DNS_RENEWAL_TIME,
millis);
}
else {
status = NS_ERROR_UNKNOWN_HOST;
Telemetry::Accumulate(Telemetry::DNS_FAILED_LOOKUP_TIME, millis);
}
// OnLookupComplete may release "rec", log before we lose it.
LOG(("Lookup completed for host [%s].\n", rec->host));
resolver->OnLookupComplete(rec, status, ai);
}
NS_RELEASE(resolver);
LOG(("DNS lookup thread ending execution.\n"));
}
void
nsHostResolver::ThreadFunc(void *arg)
{
LOG(("DNS lookup thread starting execution.\n"));
static nsThreadPoolNaming naming;
naming.SetThreadPoolName(NS_LITERAL_CSTRING("DNS Resolver"));
#if defined(RES_RETRY_ON_FAILURE)
nsResState rs;
#endif
nsHostResolver *resolver = (nsHostResolver *)arg;
nsHostRecord *rec;
PRAddrInfo *prai = nullptr;
while (resolver->GetHostToLookup(&rec)) {
LOG(("Calling getaddrinfo for host [%s].\n", rec->host));
int flags = PR_AI_ADDRCONFIG;
if (!(rec->flags & RES_CANON_NAME))
flags |= PR_AI_NOCANONNAME;
TimeStamp startTime = TimeStamp::Now();
MOZ_EVENT_TRACER_EXEC(rec, "net::dns::resolve");
// We need to remove IPv4 records manually
// because PR_GetAddrInfoByName doesn't support PR_AF_INET6.
bool disableIPv4 = rec->af == PR_AF_INET6;
uint16_t af = disableIPv4 ? PR_AF_UNSPEC : rec->af;
prai = PR_GetAddrInfoByName(rec->host, af, flags);
#if defined(RES_RETRY_ON_FAILURE)
if (!prai && rs.Reset())
prai = PR_GetAddrInfoByName(rec->host, af, flags);
#endif
TimeDuration elapsed = TimeStamp::Now() - startTime;
uint32_t millis = static_cast<uint32_t>(elapsed.ToMilliseconds());
// convert error code to nsresult
nsresult status;
AddrInfo *ai = nullptr;
if (prai) {
ai = new AddrInfo(rec->host, prai, disableIPv4);
PR_FreeAddrInfo(prai);
if (ai->mAddresses.isEmpty()) {
delete ai;
ai = nullptr;
}
}
if (ai) {
status = NS_OK;
Telemetry::Accumulate(!rec->addr_info_gencnt ?
Telemetry::DNS_LOOKUP_TIME :
Telemetry::DNS_RENEWAL_TIME,
millis);
}
else {
status = NS_ERROR_UNKNOWN_HOST;
Telemetry::Accumulate(Telemetry::DNS_FAILED_LOOKUP_TIME, millis);
}
// OnLookupComplete may release "rec", log before we lose it.
LOG(("Lookup completed for host [%s].\n", rec->host));
resolver->OnLookupComplete(rec, status, ai);
}
NS_RELEASE(resolver);
LOG(("DNS lookup thread ending execution.\n"));
}