void CDatagrams::listen()
{
QMutexLocker l(&m_pSection);
if(m_bActive)
{
systemLog.postLog(LogSeverity::Debug, QString("CDatagrams::Listen - already listening"));
return;
}
Q_ASSERT(m_pSocket == 0);
m_pSocket = new QUdpSocket(this);
CEndPoint addr = Network.getLocalAddress();
if(m_pSocket->bind(addr.port()))
{
systemLog.postLog(LogSeverity::Debug, QString("Datagrams listening on %1").arg(m_pSocket->localPort()));
m_nDiscarded = 0;
for(int i = 0; i < quazaaSettings.Gnutella2.UdpBuffers; i++)
{
m_FreeBuffer.append(new CBuffer(1024));
}
for(int i = 0; i < quazaaSettings.Gnutella2.UdpInFrames; i++)
{
m_FreeDatagramIn.append(new DatagramIn);
}
for(int i = 0; i < quazaaSettings.Gnutella2.UdpOutFrames; i++)
{
m_FreeDatagramOut.append(new DatagramOut);
}
connect(this, SIGNAL(sendQueueUpdated()), this, SLOT(flushSendCache()), Qt::QueuedConnection);
connect(m_pSocket, SIGNAL(readyRead()), this, SLOT(onDatagram()), Qt::QueuedConnection);
m_bActive = true;
}
else
{
systemLog.postLog(LogSeverity::Debug, QString("Can't bind UDP socket! UDP communication disabled!"));
disconnectNode();
}
m_bFirewalled = true;
}
void CNetworkConnection::ConnectTo(CEndPoint oAddress)
{
m_oAddress = oAddress;
m_bInitiated = true;
m_bConnected = false;
m_tConnected = time(0);
Q_ASSERT(m_pInput == 0);
Q_ASSERT(m_pOutput == 0);
m_pInput = new CBuffer(8192);
m_pOutput = new CBuffer(8192);
Q_ASSERT(m_pSocket == 0);
m_pSocket = new QTcpSocket();
initializeSocket();
m_pSocket->connectToHost(oAddress, oAddress.port());
}
void CDatagrams::onQKR(CEndPoint& addr, G2Packet* pPacket)
{
if(!Neighbours.isG2Hub())
{
return;
}
CEndPoint oRequestedAddress = addr;
CEndPoint oSendingAddress = addr;
if(pPacket->m_bCompound)
{
char szType[9];
quint32 nLength = 0, nNext = 0;
while(pPacket->readPacket(&szType[0], nLength))
{
nNext = pPacket->m_nPosition + nLength;
if(strcmp("SNA", szType) == 0 && nLength >= 4)
{
if(nLength >= 16)
{
Q_IPV6ADDR ip;
pPacket->read(&ip, 16);
oSendingAddress.setAddress(ip);
}
else
{
quint32 nIp = pPacket->readIntBE<quint32>();
oSendingAddress.setAddress(nIp);
}
}
else if(strcmp("RNA", szType) == 0 && nLength >= 6)
{
if(nLength >= 18)
{
pPacket->readHostAddress(&oRequestedAddress, false);
}
else
{
pPacket->readHostAddress(&oRequestedAddress);
}
}
pPacket->m_nPosition = nNext;
}
}
if(!oRequestedAddress.port() || oRequestedAddress.isFirewalled())
{
return;
}
G2Packet* pAns = G2Packet::newPacket("QKA", true);
quint32 nKey = QueryKeys.create(oRequestedAddress);
pAns->writePacket("QK", 4);
pAns->writeIntLE<quint32>(nKey);
G2Packet* pSNA = G2Packet::newPacket("SNA");
pSNA->writeHostAddress(&oSendingAddress);
pAns->writePacket(pSNA);
pSNA->release();
sendPacket(oRequestedAddress, pAns, false);
pAns->release();
#if LOG_QUERY_HANDLING
systemLog.postLog(LogSeverity::Debug, "Node %s asked for a query key (0x%08x) for node %s", qPrintable(addr.toStringWithPort()), nKey, qPrintable(oRequestedAddress.toStringWithPort()));
#endif // LOG_QUERY_HANDLING
}