void processStream(const QByteArray &in)
{
inStream += in;
ObjectSessionWatcher watch(&sess);
while(1)
{
QByteArray packet;
// try to extract ChannelData or a STUN message from
// the stream
packet = StunAllocate::readChannelData((const quint8 *)inStream.data(), inStream.size());
if(packet.isNull())
{
packet = StunMessage::readStun((const quint8 *)inStream.data(), inStream.size());
if(packet.isNull())
break;
}
inStream = inStream.mid(packet.size());
// processDatagram may cause the session to be reset
// or the object to be deleted
processDatagram(packet);
if(!watch.isValid())
break;
}
}
// Main sender thread
void *senderMain(void *b)
{
// Initialize and bind to socket
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
if (sockfd < 0)
error("ERROR opening socket");
bzero((char *) &serv_addr, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = INADDR_ANY;
serv_addr.sin_port = htons(portno);
if (bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0)
error("ERROR on binding");
rcvlen = sizeof(rcv_addr);
// Wait for datagrams from receiver, process, and return response
int done = 0;
while (1) {
recvfrom(sockfd, messageBuf, PKTSIZE, 0, (struct sockaddr *) &rcv_addr, &rcvlen);
done = processDatagram();
if(done)
{
printf("Done transmitting file!\n\n");
resetSender();
}
} /* end of while */
pthread_exit(0);
}
void UdpSocketHandler::readPendingDatagrams()
{
while (d->socket->hasPendingDatagrams()) {
QHostAddress sender;
quint16 senderPort;
QByteArray *ba = new QByteArray();
ba->resize(d->socket->pendingDatagramSize());
const qint64 bytesRead = d->socket->readDatagram(ba->data(), ba->size(), &sender, &senderPort);
d->totalBytesRead += bytesRead;
if (!processDatagram(ba, sender, senderPort)) {
delete ba;
}
}
}
void MediaStreamingSocketHandler::Private::onReadyReadDatagrams()
{
while (_socket->hasPendingDatagrams()) {
QHostAddress sender;
quint16 senderPort;
QByteArray data;
data.resize(_socket->pendingDatagramSize());
const qint64 bytesRead = _socket->readDatagram(data.data(), data.size(), &sender, &senderPort);
processDatagram(&data, sender, senderPort);
_totalBytesRead += bytesRead;
}
}
void Daemon::on_read_Datagrams()
{
//QMessageBox::critical(NULL, tr("提示"), tr("on_read_Datagrams.") );
while (udpSocket->hasPendingDatagrams())
{
QByteArray block;
block.resize(udpSocket->pendingDatagramSize());
if ( -1 == udpSocket->readDatagram(block.data(), block.size(), &senderIp, &senderPort))
continue;
processDatagram(block);
}
}
// private
void UdpReceiver::onReadyRead()
{
if (!inSocket->waitForReadyRead(8)) { // 1/60fps ~= 16.7ms, 1/120fps ~= 8.3ms
return;
}
// TODO: add failsafe
// if a command not recieved then slowly return all channel to neutral
//
while (inSocket->hasPendingDatagrams()) {
QByteArray datagram;
datagram.resize(inSocket->pendingDatagramSize());
quint64 datagramSize;
datagramSize = inSocket->readDatagram(datagram.data(), datagram.size());
processDatagram(datagram);
}
}
// Check all sockets
foreach (sACNRxSocket* m_socket, m_sockets)
{
while(m_socket->hasPendingDatagrams())
{
QByteArray data;
data.resize(m_socket->pendingDatagramSize());
QHostAddress sender;
quint16 senderPort;
m_socket->readDatagram(data.data(), data.size(),
&sender, &senderPort);
processDatagram(
data,
m_socket->localAddress(),
sender);
}
}
void processStream(const QByteArray &in)
{
inStream += in;
while(1)
{
QByteArray packet;
// try to extract ChannelData or a STUN message from
// the stream
packet = StunAllocate::readChannelData((const quint8 *)inStream.data(), inStream.size());
if(packet.isNull())
{
packet = StunMessage::readStun((const quint8 *)inStream.data(), inStream.size());
if(packet.isNull())
break;
}
inStream = inStream.mid(packet.size());
processDatagram(packet);
}
}
//*****
void DtmfDataLinkLayer::encode( boost::circular_buffer< Packet > *downIn,
boost::circular_buffer< Frame > *downOut,
boost::circular_buffer< Frame > *upIn,
boost::circular_buffer< unsigned int > *upOut)
{
#ifdef DEBUG
DEBUG_OUT << std::endl << "---------- ### ENCODE ### ----------" << std::endl;
#endif
//update pointers
datagramDown = downIn;
frameDown = downOut;
frameUp = upIn;
datagramUp = upOut;
//do I have token?
if(hasToken == 1)
{
//is the token expired?
if(checkToken() == 1)
return;
}
else
{
#ifdef DEBUG
DEBUG_OUT << "has no token" << std::endl;
#endif
return;
}
//check if ready to process
if(awaitsReply == 1)
{
//check current time
time_t nowClock;
time ( &nowClock );
//compare with saved timestamp from when transmission ended
if((nowClock-timestampAwaitsReply)>MAX_TIME_TO_REPLY)
{
//if time expired
#ifdef DEBUG
DEBUG_OUT << "Time for receiver to reply is up" << std::endl;
#endif
//resend all
resendData(0);
}
else
{
//if there is time left to reply
#ifdef DEBUG
std::cout << "Time left for receiver to reply: " <<
(MAX_TIME_TO_REPLY-(nowClock-timestampAwaitsReply)) << " seconds" << std::endl;
#endif
}
}
//start processing if there is data in the buffer
if(!(datagramDown->empty()))
{
while(true)
{
//check if list is full
if(nextInSendSequence >= 8)
{
#ifdef DEBUG
DEBUG_OUT << "List is full...ending transmission" << std::endl;
#endif
endTransmission();
break;
}
//check if end of datagram is reached
if(datagramIterator >= datagramLength)
{
//previous datagram has ended and all data has been sent and confirmed
if(dataInSendList == 0 && receiverNeedsUpdate == 0)
{
datagramDown->pop_front();
datagramIterator = 0;
receiverNeedsUpdate = 1;
if(datagramDown->empty())
{
#ifdef DEBUG
DEBUG_OUT << "Last element popped" << std::endl;
#endif
return;
}
}
if(receiverNeedsUpdate == 1)
{
//get address of receiver
currentReceiver = datagramDown->front().recvAddr();
datagramLength = datagramDown->front().totalLength();
receiverNeedsUpdate = 0;
#ifdef DEBUG
DEBUG_OUT << "Setting receiver address to " << currentReceiver << std::endl;
#endif
}
else
{
//datagram has ended but sent data has not yet been confirmed
#ifdef DEBUG
DEBUG_OUT << "Buffer is empty...ending transmission" << std::endl;
#endif
//Set EOT bit in last frame
endTransmission();
break;
}
}
else
{
//still data to process in this datagram
#ifdef DEBUG
DEBUG_OUT << "Popping from datagrambuffer..." << (int)datagramDown->front()[datagramIterator] << std::endl;
#endif
processDatagram((unsigned int)datagramDown->front()[datagramIterator]);
datagramIterator++;
}
}
}
else
{
//buffer is empty
#ifdef DEBUG
DEBUG_OUT << "Buffer is empty...nothing to process" << std::endl;
#endif
if(hasToken == 1 && tokenAlreadyOffered == 0 && dataInSendList == 0)
{
// nothing to process. Might as well pass token
#ifdef DEBUG
DEBUG_OUT << "No need for token...passing" << std::endl;
#endif
offerToken();
}
}
}