void Server::handleIncomingQueries()
{
std::cout << "Zapytania..." << std::endl;
std::list<OwnedPipeChannelPtr> closingConnectionList;
for(OwnedPipeChannelPtr client : clients_)
{
NamedPipeReader& reader = client->getServerReader();
std::cout << "Awaiting orders..." << std::endl;
std::string msg = reader.read();
if(msg.empty())
continue;
std::cout << "Incoming message: " << msg << std::endl;
if(msg == Linda::Messages::CLOSE_CONNECTION_REQUEST)
closingConnectionList.push_back(client);
std::string answer = handleQuery(msg);
if(answer == Linda::Messages::TIMEOUT_MESSAGE)
waitingQueue_.push_back(WaitingQuery(time(NULL) + lastTimeout_, msg, client));
else
answerQueue_.push_back(AddressedAnswer(client, answer));
}
for(OwnedPipeChannelPtr toRemove : closingConnectionList)
clients_.remove(toRemove); //may be optimized and even made in more precise way
//by changig upper loop to old-style std::list::inteterator
//list and removing using interator like i = remove(i);
}
bool parseSchedulerMessage(int size, const byte *msg, CONTEXT *context)
{
switch (msg[0])
{
case SCHED_CMD_QUERY_ALL:
return handleQueryAll(size, msg, context);
break;
case SCHED_CMD_CREATE_TASK:
return handleCreateTask(size, msg, context);
break;
case SCHED_CMD_DELETE_TASK:
return handleDeleteTask(size, msg, context);
break;
case SCHED_CMD_ADD_TO_TASK:
return handleAddToTask(size, msg, context);
break;
case SCHED_CMD_SCHED_TASK:
return handleScheduleTask(size, msg, context);
break;
case SCHED_CMD_QUERY:
return handleQuery(size, msg, context);
break;
case SCHED_CMD_RESET:
return handleReset(size, msg, context);
break;
case SCHED_CMD_BOOT_TASK:
return handleBootTask(size, msg, context);
break;
}
return false;
}
void ImageLoader::request(const QUrl &url)
{
Query createdRequest = createRequest(url);
if (createdRequest.isValid()) {
handleQuery(createdRequest);
}
}
bool WebPage::acceptNavigationRequest(QWebFrame *frame, const QNetworkRequest &request, QWebPage::NavigationType type)
{
Q_UNUSED(frame);
if (request.url().host() == chessApp->url().host()) {
if (request.url().path() == QString("/%1").arg(QCoreApplication::applicationName())) {
handleQuery(request.url().queryItems());
return false;
}
}
switch (type) {
case QWebPage::NavigationTypeLinkClicked:
{
if (request.url().host() != chessApp->url().host()) {
QDesktopServices::openUrl(request.url());
return false;
}
}
case QWebPage::NavigationTypeFormSubmitted:
case QWebPage::NavigationTypeBackOrForward:
case QWebPage::NavigationTypeReload:
case QWebPage::NavigationTypeFormResubmitted:
case QWebPage::NavigationTypeOther:
default:
break;
}
return QWebPage::acceptNavigationRequest(frame, request, type);
}
void GameNetInterface::handleInfoPacket(const Address &remoteAddress, U8 packetType, BitStream *stream)
{
switch(packetType)
{
case Ping:
if(mGame->isServer())
handlePing(mGame, remoteAddress, mSocket, stream, mGame->getClientId());
break;
case PingResponse:
if(!mGame->isServer())
handlePingResponse(mGame, remoteAddress, stream);
break;
case Query:
if(mGame->isServer())
handleQuery(mGame, remoteAddress, mSocket, stream);
break;
case QueryResponse:
if(!mGame->isServer())
handleQueryResponse(mGame, remoteAddress, stream);
break;
default:
TNLAssert(false, "Unknown packetType!");
}
}
void AbstractGraphPostLoader::request(const QString &graph)
{
if (!queryManager()) {
return;
}
Query createdRequest = createRequest(graph, data());
if (createdRequest.isValid()) {
handleQuery(createdRequest);
}
}
int main(int argc, char** argv)
{
int width=8;
VC handle = vc_createValidityChecker();
// Create variable "x"
Expr x = vc_varExpr(handle, "x", vc_bvType(handle, width));
// Create bitvector x + x
Expr xPlusx = vc_bvPlusExpr(handle, width, x, x);
// Create bitvector constant 2
Expr two = vc_bvConstExprFromInt(handle, width, 2);
// Create bitvector 2*x
Expr xTimes2 = vc_bvMultExpr(handle, width, two, x);
// Create bool expression x + x = 2*x
Expr equality = vc_eqExpr(handle, xPlusx , xTimes2);
vc_assertFormula(handle, vc_trueExpr(handle) );
// We are asking STP: ∀ x. true → ( x + x = 2*x )
// This should be VALID.
printf("######First Query\n");
handleQuery(handle, equality);
// We are asking STP: ∀ x. true → ( x + x = 2 )
// This should be INVALID.
printf("######Second Query\n");
// Create bool expression x + x = 2
Expr badEquality = vc_eqExpr(handle, xPlusx , two);
handleQuery(handle, badEquality);
// Clean up
vc_Destroy(handle);
return 0;
}
void Server::handleWaitingQueue()
{
std::cout << "Waiting..." << std::endl;
for(auto it = waitingQueue_.begin(); it != waitingQueue_.end();)
{
std::string answer = handleQuery(it->query);
if(answer != Linda::Messages::TIMEOUT_MESSAGE)
{
answerQueue_.push_back(AddressedAnswer(it->client, answer));
it = waitingQueue_.erase(it);
}
else
++it;
}
}
// ------------ MAIN --------------
int main(int argc, char *argv[])
{
// usage check / notification
if(argc != 6) {
printf("usage Error: use: hashServer serverAddress serverPort offset[0,64,128,196] successorAddress successorPort\n\n");
exit(1);
}
// offset
offset = atoi(argv[3]);
// alloc hashtable
table = (struct hashnode *) malloc(sizeof(struct hashnode) * 64);
// set up successor
successor_port = atoi(argv[5]);
if ((successor_he = gethostbyname(argv[4])) == NULL) { // get the host info
herror("gethostbyname");
exit(1);
}
successor_their_addr.sin_family = AF_INET;
successor_their_addr.sin_port = htons(successor_port);
successor_their_addr.sin_addr = *((struct in_addr *)successor_he->h_addr);
memset(successor_their_addr.sin_zero, '\0', sizeof successor_their_addr.sin_zero);
successor_addrlen = sizeof(successor_their_addr);
//set up local port
int sockfd, status;
struct sockaddr_in myaddr; // local address information
unsigned char buffer[INTERNAL_BUFFER_LENGTH]; // assume longest
unsigned int key, value;
char command[4];
// alloc open request table
// struct client_request *openClientRequests;
// openClientRequests = (struct client_request *) malloc(sizeof(struct client_request) * 10); // max. ten parallel connections
// ---------- UDP --------
// setup UDP address
myaddr.sin_family = AF_INET;
myaddr.sin_addr.s_addr = INADDR_ANY;
myaddr.sin_port = htons(atoi(argv[2])); // UDP
// init udp sock
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
if(bind(sockfd, (struct sockaddr *)&myaddr, sizeof(myaddr)) < 0){
printf("FATAL: UDP binding error\n");
}
if ((server_he = gethostbyname(argv[1])) == NULL) { // get the host info
herror("gethostbyname");
exit(1);
}
server_addr.sin_addr = *((struct in_addr *)successor_he->h_addr);
server_ip = server_addr.sin_addr.s_addr;
server_port = atoi(argv[2]);
printf("Post-poning finger-table setup...\n");
// wait for nodes to load
sleep(5);
printf("Setup finger-tables:\n");
// pack getAddress data
strcpy(command, "xad");
forceForwardQuery(command, 2, 0, server_ip, server_port);
printf("Complete.\n\n");
// ------- CORE LOOP -----------
while(1) {
struct sockaddr_storage their_addr;
socklen_t addr_size;
printf("Waiting ...\n");
addr_size = sizeof(their_addr);
status = recvfrom(sockfd, buffer, sizeof(buffer), 0, (struct sockaddr *)&their_addr, &addr_size);
printf("Recieved query.\n");
if(status <= 0) {
printf("Error: receiving");
} else {
if (isInternalCommunication(buffer)) {
unsigned long responseAddress;
unsigned int responsePort;
unpackDataFromInternal(buffer, command, &key, &value, &responseAddress, &responsePort);
printf("INTERNAL: [%s] %d:%d (origin: %lu:%d)\n", command, key, value, responseAddress, responsePort);
if (isActiveQuery(command) && canHandleQueryLocally(key)) {
printf("HANDLE...\n");
handleQuery(command, key, value, responseAddress, responsePort);
} else if(isAddressQuery(command)){
handleAddressQuery(command, key, value, responseAddress, responsePort);
} else {
printf("PASS...\n");
forwardQuery(command, key, value, responseAddress, responsePort);
}
} else {
unpackData(buffer, command, &key, &value);
printf("CLIENT: [%s] %d:%d \n", command, key, value);
int requestId = nextFreeRequestId(openClientRequests);
struct client_request request;
request.socket = *((struct sockaddr *)&their_addr);
request.socket_addr_len = sizeof(their_addr);
request.active = 1;
request.key = key;
struct sockaddr_in clientInAddress;
clientInAddress = *((struct sockaddr_in *) &their_addr);
request.clientAddress = clientInAddress.sin_addr.s_addr;
request.clientPort = clientInAddress.sin_port; //todo
openClientRequests[requestId] = request;
if (canHandleQueryLocally(key)) {
printf("HANDLE...\n");
handleQuery(command, key, value, request.clientAddress, request.clientPort);
} else {
printf("FORCE-FORWARD...\n");
forceForwardQuery(command, key, value, request.clientAddress, request.clientPort);
printf("Query entered cluster.\n");
}
}
}
}
close(sockfd);
return 0;
}
void CommandHandler::handleCommand(const std::string &command, ChatTab *tab)
{
std::string::size_type pos = command.find(' ');
std::string type(command, 0, pos);
std::string args(command, pos == std::string::npos ? command.size() : pos + 1);
if (type == "help") // Do help before tabs so they can't override it
{
handleHelp(args, tab);
}
else if (tab->handleCommand(type, args))
{
// Nothing to do
}
else if (type == "announce")
{
handleAnnounce(args, tab);
}
else if (type == "where")
{
handleWhere(args, tab);
}
else if (type == "who")
{
handleWho(args, tab);
}
else if (type == "msg" || type == "whisper" || type == "w")
{
handleMsg(args, tab);
}
else if (type == "query" || type == "q")
{
handleQuery(args, tab);
}
else if (type == "ignore")
{
handleIgnore(args, tab);
}
else if (type == "unignore")
{
handleUnignore(args, tab);
}
else if (type == "join")
{
handleJoin(args, tab);
}
else if (type == "list")
{
handleListChannels(args, tab);
}
else if (type == "clear")
{
handleClear(args, tab);
}
else if (type == "party")
{
handleParty(args, tab);
}
else if (type == "me")
{
handleMe(args, tab);
}
else if (type == "record")
{
handleRecord(args, tab);
}
else if (type == "toggle")
{
handleToggle(args, tab);
}
else if (type == "present")
{
handlePresent(args, tab);
}
else
{
tab->chatLog(_("Unknown command."));
}
}
