void QTNServer::printClients()
{
std::cout << getStatusDescription().c_str() << "clients connected: ";
int i = 0;
for (QMap<int, QTNServerThread*>::iterator it = m_clients.begin(), end = m_clients.end();it != end;++it)
{
std::cout << "\n [client num " << ++i << "/" << m_numMaxClients << "] " << (*it)->getClientConnectedIp() << ";";
}
if (i == 0)
{
std::cout << "NONE";
}
std::cout << "\n";
QTimer::singleShot(1000, this, SLOT(printClients()));
}
bool QTNServer::init()
{
std::cout << getStatusDescription().c_str() << "is initializing " << "ip: " << SERVER_IP << ", port: " << SERVER_PORT << "\n";
bool isInitialized = listen(QHostAddress(SERVER_IP), SERVER_PORT);
if (isInitialized)
{
m_serverStatus = SERVER_STATUS_OK;
std::cout << getStatusDescription().c_str() << "is listening\n";
QThreadPool::globalInstance()->setMaxThreadCount(QTNConst::NUM_MAX_CLIENTS);
connect(this, SIGNAL(newConnection()), this, SLOT(onNewConnection()));
QTimer::singleShot(1000, this, SLOT(printClients()));
}
else
{
m_serverStatus = SERVER_STATUS_NOK;
std::cout << getStatusDescription().c_str() << "is NOT listening\n";
}
return isInitialized;
}
/**
* Handle a new connection
*
* @param {int} newSocketFd
*/
void handleConnection(int newSocketFd)
{
char ioBuffer[256];
memset(ioBuffer, '\0', 256); // reset the ioBuffer for i/o
attemptRead(newSocketFd, ioBuffer, 255);
printf("Before call to isValidClientId(), ");
printClients();
int clientId = atoi(ioBuffer);
int isValidId = isValidClientId(clientId);
printf("Checking for valid client id...\n");
if (isValidId == 0) {
attemptWrite(newSocketFd, INVALID_CLIENT_ID, strlen(INVALID_CLIENT_ID));
return;
} else {
attemptWrite(newSocketFd, VALID_CLIENT_ID, strlen(VALID_CLIENT_ID));
memset(ioBuffer, '\0', 256); // reset the ioBuffer for i/o
attemptRead(newSocketFd, ioBuffer, 255);
printf("%s\n", ioBuffer); // print client id response message from client
addClient(clientId);
printf("After call to addClient(), ");
printClients();
attemptWrite(newSocketFd, WELCOME_MESSAGE, strlen(WELCOME_MESSAGE));
printf("New client #%d\n", clientId);
while (1) {
printf("Waiting for command from client #%d...\n", clientId);
char opFile[256];
// read opFile from client
memset(ioBuffer, '\0', 256); // reset the ioBuffer for i/o
attemptRead(newSocketFd, ioBuffer, 255);
strcpy(opFile, ioBuffer);
// if client requests, end session
if (strcmp(ioBuffer, END_SESSION) == 0) {
printf("Terminating client #%d\n", clientId);
removeClient(clientId);
return;
}
// otherwise, send continue response
attemptWrite(newSocketFd, CONTINUE, strlen(CONTINUE));
// read opCode from client
memset(ioBuffer, '\0', 256); // reset the ioBuffer for i/o
attemptRead(newSocketFd, ioBuffer, 255);
// proceed based on opCode
if (strcmp(ioBuffer, PROCESS_READ) == 0) {
printf("Processing read for file: `%s`\n", opFile);
readFile(opFile, newSocketFd); // send file to client
} else if (strcmp(ioBuffer, PROCESS_WRITE) == 0) {
printf("Processing write for file: `%s`\n", opFile);
attemptWrite(newSocketFd, CONTINUE, strlen(CONTINUE));
memset(ioBuffer, '\0', 256);
attemptRead(newSocketFd, ioBuffer, 255); // read file contents
writeToFile(opFile, ioBuffer);
}
}
}
}