TcpListener::TcpListener(Dispatcher& dispatcher, const Ipv4Address& addr, uint16_t port) : dispatcher(&dispatcher) {
std::string message;
listener = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (listener == -1) {
message = "socket failed, " + lastErrorMessage();
} else {
int flags = fcntl(listener, F_GETFL, 0);
if (flags == -1 || fcntl(listener, F_SETFL, flags | O_NONBLOCK) == -1) {
message = "fcntl failed, " + lastErrorMessage();
} else {
int on = 1;
if (setsockopt(listener, SOL_SOCKET, SO_REUSEADDR, &on, sizeof on) == -1) {
message = "setsockopt failed, " + lastErrorMessage();
} else {
sockaddr_in address;
address.sin_family = AF_INET;
address.sin_port = htons(port);
address.sin_addr.s_addr = htonl( addr.getValue());
if (bind(listener, reinterpret_cast<sockaddr *>(&address), sizeof address) != 0) {
message = "bind failed, " + lastErrorMessage();
} else if (listen(listener, SOMAXCONN) != 0) {
message = "listen failed, " + lastErrorMessage();
} else {
epoll_event listenEvent;
listenEvent.events = 0;
listenEvent.data.ptr = nullptr;
if (epoll_ctl(dispatcher.getEpoll(), EPOLL_CTL_ADD, listener, &listenEvent) == -1) {
message = "epoll_ctl failed, " + lastErrorMessage();
} else {
context = nullptr;
return;
}
}
}
}
int result = close(listener);
assert(result != -1);
}
throw std::runtime_error("TcpListener::TcpListener, " + message);
}
TcpListener::TcpListener(Dispatcher& dispatcher, const Ipv4Address& addr, uint16_t port) : dispatcher(&dispatcher) {
std::string message;
listener = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (listener == -1) {
message = "socket() failed, errno=" + std::to_string(errno);
} else {
int flags = fcntl(listener, F_GETFL, 0);
if (flags == -1 || (fcntl(listener, F_SETFL, flags | O_NONBLOCK) == -1)) {
message = "fcntl() failed errno=" + std::to_string(errno);
} else {
int on = 1;
if (setsockopt(listener, SOL_SOCKET, SO_REUSEADDR, &on, sizeof on) == -1) {
message = "setsockopt failed, errno=" + std::to_string(errno);
} else {
sockaddr_in address;
address.sin_family = AF_INET;
address.sin_port = htons(port);
address.sin_addr.s_addr = htonl(addr.getValue());
if (bind(listener, reinterpret_cast<sockaddr*>(&address), sizeof address) != 0) {
message = "bind failed, errno=" + std::to_string(errno);
} else if (listen(listener, SOMAXCONN) != 0) {
message = "listen failed, errno=" + std::to_string(errno);
} else {
struct kevent event;
EV_SET(&event, listener, EVFILT_READ, EV_ADD | EV_DISABLE | EV_CLEAR, 0, SOMAXCONN, NULL);
if (kevent(dispatcher.getKqueue(), &event, 1, NULL, 0, NULL) == -1) {
message = "kevent() failed, errno=" + std::to_string(errno);
} else {
context = nullptr;
return;
}
}
}
}
if (close(listener) == -1) {
message = "close failed, errno=" + std::to_string(errno);
}
}
throw std::runtime_error("TcpListener::TcpListener, " + message);
}
TcpListener::TcpListener(Dispatcher& dispatcher, const Ipv4Address& address, uint16_t port) : dispatcher(&dispatcher) {
std::string message;
listener = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (listener == INVALID_SOCKET) {
message = "socket failed, " + errorMessage(WSAGetLastError());
} else {
sockaddr_in addressData;
addressData.sin_family = AF_INET;
addressData.sin_port = htons(port);
addressData.sin_addr.S_un.S_addr = htonl(address.getValue());
if (bind(listener, reinterpret_cast<sockaddr*>(&addressData), sizeof(addressData)) != 0) {
message = "bind failed, " + errorMessage(WSAGetLastError());
} else if (listen(listener, SOMAXCONN) != 0) {
message = "listen failed, " + errorMessage(WSAGetLastError());
} else {
GUID guidAcceptEx = WSAID_ACCEPTEX;
DWORD read = sizeof acceptEx;
if (acceptEx == nullptr && WSAIoctl(listener, SIO_GET_EXTENSION_FUNCTION_POINTER, &guidAcceptEx, sizeof guidAcceptEx, &acceptEx, sizeof acceptEx, &read, NULL, NULL) != 0) {
message = "WSAIoctl failed, " + errorMessage(WSAGetLastError());
} else {
assert(read == sizeof acceptEx);
if (CreateIoCompletionPort(reinterpret_cast<HANDLE>(listener), dispatcher.getCompletionPort(), 0, 0) != dispatcher.getCompletionPort()) {
message = "CreateIoCompletionPort failed, " + lastErrorMessage();
} else {
context = nullptr;
return;
}
}
}
int result = closesocket(listener);
assert(result == 0);
}
throw std::runtime_error("TcpListener::TcpListener, " + message);
}
TcpConnection TcpConnector::connect(const Ipv4Address& address, uint16_t port) {
assert(dispatcher != nullptr);
assert(context == nullptr);
if (dispatcher->interrupted()) {
throw InterruptedException();
}
std::string message;
int connection = ::socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (connection == -1) {
message = "socket failed, " + lastErrorMessage();
} 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, " + lastErrorMessage();
} else {
int flags = fcntl(connection, F_GETFL, 0);
if (flags == -1 || fcntl(connection, F_SETFL, flags | O_NONBLOCK) == -1) {
message = "fcntl failed, " + lastErrorMessage();
} else {
sockaddr_in addressData;
addressData.sin_family = AF_INET;
addressData.sin_port = htons(port);
addressData.sin_addr.s_addr = htonl(address.getValue());
int result = ::connect(connection, reinterpret_cast<sockaddr *>(&addressData), sizeof addressData);
if (result == -1) {
if (errno == EINPROGRESS) {
ConnectorContext connectorContext;
connectorContext.context = dispatcher->getCurrentContext();
connectorContext.interrupted = false;
connectorContext.connection = connection;
struct kevent event;
EV_SET(&event, connection, EVFILT_WRITE, EV_ADD | EV_ENABLE, 0, 0, &connectorContext);
if (kevent(dispatcher->getKqueue(), &event, 1, NULL, 0, NULL) == -1) {
message = "kevent failed, " + lastErrorMessage();
} else {
context = &connectorContext;
dispatcher->getCurrentContext()->interruptProcedure = [&] {
assert(dispatcher != nullptr);
assert(context != nullptr);
ConnectorContext* connectorContext = static_cast<ConnectorContext*>(context);
if (!connectorContext->interrupted) {
if (close(connectorContext->connection) == -1) {
throw std::runtime_error("TcpListener::stop, close failed, " + lastErrorMessage());
}
dispatcher->pushContext(connectorContext->context);
connectorContext->interrupted = true;
}
};
dispatcher->dispatch();
dispatcher->getCurrentContext()->interruptProcedure = nullptr;
assert(dispatcher != nullptr);
assert(connectorContext.context == dispatcher->getCurrentContext());
assert(context == &connectorContext);
context = nullptr;
connectorContext.context = nullptr;
if (connectorContext.interrupted) {
throw InterruptedException();
}
struct kevent event;
EV_SET(&event, connection, EVFILT_WRITE, EV_ADD | EV_DISABLE, 0, 0, NULL);
if (kevent(dispatcher->getKqueue(), &event, 1, NULL, 0, NULL) == -1) {
message = "kevent failed, " + lastErrorMessage();
} else {
int retval = -1;
socklen_t retValLen = sizeof(retval);
int s = getsockopt(connection, SOL_SOCKET, SO_ERROR, &retval, &retValLen);
if (s == -1) {
message = "getsockopt failed, " + lastErrorMessage();
} else {
if (retval != 0) {
message = "getsockopt failed, " + lastErrorMessage();
} else {
return TcpConnection(*dispatcher, connection);
}
}
}
}
}
} else {
return TcpConnection(*dispatcher, connection);
}
}
}
int result = close(connection);
if (result) {}
assert(result != -1);;
}
throw std::runtime_error("TcpConnector::connect, " + message);
}
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);
}