TcpConnection TcpConnector::connect(const Ipv4Address& address, uint16_t port) {
assert(dispatcher != nullptr);
assert(context == nullptr);
if (dispatcher->interrupted()) {
throw InterruptedException();
}
std::string message;
SOCKET connection = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (connection == INVALID_SOCKET) {
message = "socket failed, result=" + std::to_string(WSAGetLastError());
} else {
sockaddr_in bindAddress;
bindAddress.sin_family = AF_INET;
bindAddress.sin_port = 0;
bindAddress.sin_addr.s_addr = INADDR_ANY;
if (bind(connection, reinterpret_cast<sockaddr*>(&bindAddress), sizeof bindAddress) != 0) {
message = "bind failed, result=" + std::to_string(WSAGetLastError());
} else {
GUID guidConnectEx = WSAID_CONNECTEX;
DWORD read = sizeof connectEx;
if (connectEx == nullptr && WSAIoctl(connection, SIO_GET_EXTENSION_FUNCTION_POINTER, &guidConnectEx, sizeof guidConnectEx, &connectEx, sizeof connectEx, &read, NULL, NULL) != 0) {
message = "WSAIoctl failed, result=" + std::to_string(WSAGetLastError());
} else {
assert(read == sizeof connectEx);
if (CreateIoCompletionPort(reinterpret_cast<HANDLE>(connection), dispatcher->getCompletionPort(), 0, 0) != dispatcher->getCompletionPort()) {
message = "CreateIoCompletionPort failed, result=" + std::to_string(GetLastError());
} else {
sockaddr_in addressData;
addressData.sin_family = AF_INET;
addressData.sin_port = htons(port);
addressData.sin_addr.S_un.S_addr = htonl(address.getValue());
TcpConnectorContext context2;
context2.hEvent = NULL;
if (connectEx(connection, reinterpret_cast<sockaddr*>(&addressData), sizeof addressData, NULL, 0, NULL, &context2) == TRUE) {
message = "ConnectEx returned immediately, which is not supported.";
} else {
int lastError = WSAGetLastError();
if (lastError != WSA_IO_PENDING) {
message = "ConnectEx failed, result=" + std::to_string(lastError);
} else {
context2.context = dispatcher->getCurrentContext();
context2.connection = connection;
context2.interrupted = false;
context = &context2;
dispatcher->getCurrentContext()->interruptProcedure = [&]() {
assert(dispatcher != nullptr);
assert(context != nullptr);
TcpConnectorContext* context2 = static_cast<TcpConnectorContext*>(context);
if (!context2->interrupted) {
if (CancelIoEx(reinterpret_cast<HANDLE>(context2->connection), context2) != TRUE) {
DWORD lastError = GetLastError();
if (lastError != ERROR_NOT_FOUND) {
throw std::runtime_error("TcpConnector::stop, CancelIoEx failed, result=" + std::to_string(GetLastError()));
}
context2->context->interrupted = true;
}
context2->interrupted = true;
}
};
dispatcher->dispatch();
dispatcher->getCurrentContext()->interruptProcedure = nullptr;
assert(context2.context == dispatcher->getCurrentContext());
assert(context2.connection == connection);
assert(dispatcher != nullptr);
assert(context == &context2);
context = nullptr;
DWORD transferred;
DWORD flags;
if (WSAGetOverlappedResult(connection, &context2, &transferred, FALSE, &flags) != TRUE) {
lastError = WSAGetLastError();
if (lastError != ERROR_OPERATION_ABORTED) {
message = "ConnectEx failed, result=" + std::to_string(lastError);
} else {
assert(context2.interrupted);
if (closesocket(connection) != 0) {
throw std::runtime_error("TcpConnector::connect, closesocket failed, result=" + std::to_string(WSAGetLastError()));
} else {
throw InterruptedException();
}
}
} else {
assert(transferred == 0);
assert(flags == 0);
DWORD value = 1;
if (setsockopt(connection, SOL_SOCKET, SO_UPDATE_CONNECT_CONTEXT, reinterpret_cast<char*>(&value), sizeof(value)) != 0) {
message = "setsockopt failed, result=" + std::to_string(WSAGetLastError());
} else {
return TcpConnection(*dispatcher, connection);
}
}
}
}
}
}
}
int result = closesocket(connection);
assert(result == 0);
}
throw std::runtime_error("TcpConnector::connect, " + message);
}
bool QPCSCReader::connect(Connect connect, Mode mode)
{
return connectEx(connect, mode) == SCARD_S_SUCCESS;
}
int ExtConn::connect(Multiplexer *pMplx)
{
m_pWorker->startOnDemond(0);
return connectEx(pMplx);
}
