void RacomClient::onUdpSocketReadyRead()
{
if(status() != Status::Running)
return;
QUdpSocket *sock = udpSocket();
QNetworkDatagram dg = sock->receiveDatagram();
QByteArray data = dg.data();
qfInfo() << data.toHex();
// remove possible initial garbage
int i = 0;
for(i=0; i<data.size(); i++)
if(data.at(i) == 0x02)
break;
data = data.mid(i);
// remove possible multiple 0x02
for(i=1; i<data.size(); i++)
if(data.at(i) != 0x02)
break;
data = data.mid(i-1);
qfInfo() << "stripped data:" << data.toHex();
if(!m_siDriver) {
m_siDriver = new siut::DeviceDriver(this);
CardReader::CardReaderPlugin *plugin = cardReaderPlugin();
if(plugin) {
connect(m_siDriver, &siut::DeviceDriver::messageReady, plugin, &CardReader::CardReaderPlugin::emitSiMessagereceived);
}
}
m_siDriver->processSiPacket(data);
}
/*
* Add an output channel to <logger> that sends messages to a UDP socket on port
* <port> on host <host>. If the host could not be found, -1 is returned and the
* channel is not created.
*/
int logToUDP(Logger *logger, const char *host, int port)
{
int fd;
if ((fd = udpSocket()) < 0 || netConnect(fd, host, port) != 0)
return -1;
else {
pthread_mutex_lock(&logger->access);
LOG_Output *out = log_create_output(logger, LOG_OT_UDP);
out->u.fd = fd;
pthread_mutex_unlock(&logger->access);
return 0;
}
}
void* procPerMessage::seeUdp(void* arg)
{
procPerMessage* perMessage = (procPerMessage*) arg;
char* udpPortNumber = perMessage->mutRecvPort;
int udpSock = udpSocket(udpPortNumber);
struct sockaddr_in clientAddress;
socklen_t len;
int mess;
while (1) {
char* msg_buf = new char[1024];
memset(msg_buf, 0, 1024);
len = sizeof(clientAddress);
mess = recvfrom(udpSock, msg_buf, 1024, 0, (struct sockaddr *)&clientAddress, &len);
Message* msg = new Message(msg_buf, mess);
perMessage->threadPool->dispatch_thread(procPerMessage::ethernetIn, (void*) msg);
// delete[] msg_buf;
}
}
main()
{
// Local variables used to hold user-inputted components of a XPCTransactionClass
// instance.
char sUser[50]; // User name
char sTicker[10]; // Ticker symbol
char cBS; // Buy/Sell indicator
long int iAmount; // Number of shares bought or sold
// Before using sockets on the Windows-NT operating system, the Winsock library
// must be initialized.
WSADATA wsaData;
if (WSAStartup(0x101, &wsaData) != 0)
{
cout << "Error initializing WinSock library: " << WSAGetLastError() << endl;
return 0;
}
// The name of the user is retrieved from the console and is stored in the local
// sUser variable.
cout << "Enter your User Name: " << flush;
cin >> sUser;
try
{
// An instance of the XPCUdpSocket is created. At this point a UDP
// socket has been created and a port has been defined.
XPCUdpSocket udpSocket(WINDOWS_NT_PORT_NUM);
// Loop forever prompting the user for transaction record data.
while(1)
{
cout << "Enter Ticker Symbol: " << flush;
cin >> sTicker;
// If the user enters "QUIT", exit the loop.
if (strcmp(sTicker, "QUIT") == 0)
break;
cout << "Enter Buy(B) or Sell(S): " << flush;
cin >> cBS;
cout << "Enter Quantity: " << flush;
cin >> iAmount;
// Create a transaction record class instance
XPCTransaction newTransaction(sUser, sTicker, cBS, iAmount);
// Send the transaction record to the UNIX server
udpSocket.iSendMessage((void *)&newTransaction, sizeof(newTransaction), UNIX_SERVER, UNIX_PORT_NUM);
// Suspend process execution until the UNIX server replies with the
// updated position.
udpSocket.iReceiveMessage((void *)&newTransaction, sizeof(newTransaction));
// Display the newly updated position
cout << "Ticker: " << newTransaction.sGetTicker() << " New Position: " << newTransaction.iGetAmount() << endl;
}
}
catch(XPCException &exceptObject)
{
cout << exceptObject.sGetException() << endl;
}
// Disconnect from the Windows NT socket library. The socket is already closed
// since the CUdpSocket instance got destructed after it left the
// try-catch block.
WSACleanup();
}
void RacomClient::run()
{
udpSocket();
Super::run();
}
void onReceivedDatagram(const void *data, int size, const struct sockaddr_in *sin) {
printf("onReadFrom emitted.. %d from %s:%d\n", size, inet_ntoa(sin->sin_addr), ntohs(sin->sin_port));
udpSocket()->writeTo(data, size, sin);
}
