QHostInfo QHostInfoAgent::fromName(const QString &hostName, QSharedPointer<QNetworkSession> networkSession)
{
QHostInfo results;
// Connect to ESOCK
RSocketServ socketServ(qt_symbianGetSocketServer());
RHostResolver hostResolver;
int err;
if (networkSession)
err = QNetworkSessionPrivate::nativeOpenHostResolver(*networkSession, hostResolver, KAfInet, KProtocolInetUdp);
else
err = hostResolver.Open(socketServ, KAfInet, KProtocolInetUdp);
if (err) {
setError_helper(results, err);
return results;
}
TNameEntry nameResult;
#if defined(QHOSTINFO_DEBUG)
qDebug("QHostInfoAgent::fromName(%s) looking up...",
hostName.toLatin1().constData());
#endif
QHostAddress address;
if (address.setAddress(hostName)) {
// Reverse lookup
#if defined(QHOSTINFO_DEBUG)
qDebug("(reverse lookup)");
#endif
TInetAddr IpAdd;
IpAdd.Input(qt_QString2TPtrC(hostName));
// Synchronous request. nameResult returns Host Name.
err = hostResolver.GetByAddress(IpAdd, nameResult);
if (err) {
//for behavioural compatibility with Qt 4.7 and unix/windows
//backends: don't report error, return ip address as host name
results.setHostName(address.toString());
} else {
results.setHostName(qt_TDesC2QString(nameResult().iName));
}
results.setAddresses(QList<QHostAddress>() << address);
return results;
}
// IDN support
QByteArray aceHostname = QUrl::toAce(hostName);
results.setHostName(hostName);
if (aceHostname.isEmpty()) {
results.setError(QHostInfo::HostNotFound);
results.setErrorString(hostName.isEmpty() ?
QCoreApplication::translate("QHostInfoAgent", "No host name given") :
QCoreApplication::translate("QHostInfoAgent", "Invalid hostname"));
return results;
}
// Call RHostResolver::GetByAddress, and place all IPv4 addresses at the start and
// the IPv6 addresses at the end of the address list in results.
// Synchronous request.
err = hostResolver.GetByName(qt_QString2TPtrC(QString::fromLatin1(aceHostname)), nameResult);
if (err) {
setError_helper(results, err);
return results;
}
QList<QHostAddress> hostAddresses;
TInetAddr hostAdd = nameResult().iAddr;
if (!(nameResult().iFlags & TNameRecord::EAlias) && !(hostAdd.IsUnspecified()))
hostAddresses.append(qt_QHostAddressFromTInetAddr(hostAdd));
// Check if there's more than one IP address linkd to this name
while (hostResolver.Next(nameResult) == KErrNone) {
hostAdd = nameResult().iAddr;
// Ensure that record is valid (not an alias and with length greater than 0)
if (!(nameResult().iFlags & TNameRecord::EAlias) && !(hostAdd.IsUnspecified()))
hostAddresses.append(qt_QHostAddressFromTInetAddr(hostAdd));
}
hostResolver.Close();
results.setAddresses(hostAddresses);
return results;
}
// Performs a device discovery. Blocks until all devices are found.
// Arguments:
// - aDevDataList - details of each found device will be put in a TDeviceData
// and added to this list
// - lookupNames - whether to perform name lookups
//
// Returns an error code.
static TInt DiscoverDevices(TDeviceDataList* aDevDataList, bool lookupNames)
{
TInt err = KErrNone;
RSocketServ socketServer;
RHostResolver hostResolver;
TInquirySockAddr addr;
TRequestStatus status;
TNameEntry nameEntry;
// connect
err = socketServer.Connect();
if (err)
return err;
// load protocol for discovery
TProtocolDesc protocolDesc;
err = socketServer.FindProtocol(_L("BTLinkManager"), protocolDesc);
if (!err) {
// initialize host resolver
err = hostResolver.Open(socketServer, protocolDesc.iAddrFamily, protocolDesc.iProtocol);
if (!err) {
// start device discovery by invoking remote address lookup
addr.SetIAC(KGIAC);
if (lookupNames) {
addr.SetAction(KHostResInquiry|KHostResName|KHostResIgnoreCache);
} else {
addr.SetAction(KHostResInquiry|KHostResIgnoreCache);
}
hostResolver.GetByAddress(addr, nameEntry, status);
while( User::WaitForRequest( status ),
(status == KErrNone || status == KRequestPending) )
{
// store new device data entry
TDeviceData *devData = new (ELeave) TDeviceData();
if (lookupNames)
devData->iDeviceName = nameEntry().iName;
devData->iDeviceAddr =
static_cast<TBTSockAddr>(nameEntry().iAddr).BTAddr();
TInquirySockAddr &isa = TInquirySockAddr::Cast(nameEntry().iAddr);
devData->iServiceClass = (TInt16)isa.MajorServiceClass();
devData->iMajorClass = (TInt8)isa.MajorClassOfDevice();
devData->iMinorClass = (TInt8)isa.MinorClassOfDevice();
// add device data entry to list
aDevDataList->Append(devData);
// get next discovered device
hostResolver.Next( nameEntry, status );
}
hostResolver.Close();
}
}
socketServer.Close();
return err;
}