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tdutils/td/utils/port/SocketFd.h

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+/*
+    This file is part of TON Blockchain Library.
+
+    TON Blockchain Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    TON Blockchain Library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2017-2019 Telegram Systems LLP
+*/
+#pragma once
+
+#include "td/utils/port/config.h"
+
+#include "td/utils/port/detail/NativeFd.h"
+#include "td/utils/port/detail/PollableFd.h"
+#include "td/utils/port/IoSlice.h"
+#include "td/utils/port/IPAddress.h"
+#include "td/utils/Slice.h"
+#include "td/utils/Span.h"
+#include "td/utils/Status.h"
+
+#include <memory>
+
+namespace td {
+
+namespace detail {
+class SocketFdImpl;
+class SocketFdImplDeleter {
+ public:
+  void operator()(SocketFdImpl *impl);
+};
+}  // namespace detail
+
+class SocketFd {
+ public:
+  SocketFd();
+  SocketFd(const SocketFd &) = delete;
+  SocketFd &operator=(const SocketFd &) = delete;
+  SocketFd(SocketFd &&);
+  SocketFd &operator=(SocketFd &&);
+  ~SocketFd();
+
+  static Result<SocketFd> open(const IPAddress &address) TD_WARN_UNUSED_RESULT;
+
+  PollableFdInfo &get_poll_info();
+  const PollableFdInfo &get_poll_info() const;
+
+  Status get_pending_error() TD_WARN_UNUSED_RESULT;
+
+  Result<size_t> write(Slice slice) TD_WARN_UNUSED_RESULT;
+  Result<size_t> writev(Span<IoSlice> slices) TD_WARN_UNUSED_RESULT;
+  Result<size_t> read(MutableSlice slice) TD_WARN_UNUSED_RESULT;
+
+  const NativeFd &get_native_fd() const;
+  static Result<SocketFd> from_native_fd(NativeFd fd);
+
+  void close();
+  bool empty() const;
+
+ private:
+  std::unique_ptr<detail::SocketFdImpl, detail::SocketFdImplDeleter> impl_;
+  explicit SocketFd(unique_ptr<detail::SocketFdImpl> impl);
+};
+
+namespace detail {
+#if TD_PORT_POSIX
+Status get_socket_pending_error(const NativeFd &fd);
+#elif TD_PORT_WINDOWS
+Status get_socket_pending_error(const NativeFd &fd, WSAOVERLAPPED *overlapped, Status iocp_error);
+#endif
+}  // namespace detail
+
+}  // namespace td