94 lines
2.5 KiB
C++
94 lines
2.5 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2020
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#pragma once
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#include "td/utils/port/config.h"
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#include "td/utils/buffer.h"
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#include "td/utils/optional.h"
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#include "td/utils/port/detail/NativeFd.h"
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#include "td/utils/port/detail/PollableFd.h"
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#include "td/utils/port/IPAddress.h"
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#include "td/utils/Slice.h"
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#include "td/utils/Span.h"
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#include "td/utils/Status.h"
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#include <memory>
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namespace td {
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// Udp and errors
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namespace detail {
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class UdpSocketFdImpl;
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class UdpSocketFdImplDeleter {
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public:
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void operator()(UdpSocketFdImpl *impl);
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};
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} // namespace detail
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struct UdpMessage {
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IPAddress address;
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BufferSlice data;
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Status error;
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};
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class UdpSocketFd {
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public:
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UdpSocketFd();
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UdpSocketFd(UdpSocketFd &&);
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UdpSocketFd &operator=(UdpSocketFd &&);
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~UdpSocketFd();
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UdpSocketFd(const UdpSocketFd &) = delete;
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UdpSocketFd &operator=(const UdpSocketFd &) = delete;
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Result<uint32> maximize_snd_buffer(uint32 max_buffer_size = 0);
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Result<uint32> maximize_rcv_buffer(uint32 max_buffer_size = 0);
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static Result<UdpSocketFd> open(const IPAddress &address) TD_WARN_UNUSED_RESULT;
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PollableFdInfo &get_poll_info();
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const PollableFdInfo &get_poll_info() const;
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const NativeFd &get_native_fd() const;
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void close();
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bool empty() const;
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static bool is_critical_read_error(const Status &status);
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#if TD_PORT_POSIX
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struct OutboundMessage {
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const IPAddress *to;
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Slice data;
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};
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struct InboundMessage {
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IPAddress *from;
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MutableSlice data;
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Status *error;
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};
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Status send_message(const OutboundMessage &message, bool &is_sent) TD_WARN_UNUSED_RESULT;
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Status receive_message(InboundMessage &message, bool &is_received) TD_WARN_UNUSED_RESULT;
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Status send_messages(Span<OutboundMessage> messages, size_t &count) TD_WARN_UNUSED_RESULT;
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Status receive_messages(MutableSpan<InboundMessage> messages, size_t &count) TD_WARN_UNUSED_RESULT;
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#elif TD_PORT_WINDOWS
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Result<optional<UdpMessage> > receive();
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void send(UdpMessage message);
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Status flush_send();
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#endif
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private:
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static constexpr uint32 DEFAULT_UDP_MAX_SND_BUFFER_SIZE = (1 << 24);
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static constexpr uint32 DEFAULT_UDP_MAX_RCV_BUFFER_SIZE = (1 << 24);
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std::unique_ptr<detail::UdpSocketFdImpl, detail::UdpSocketFdImplDeleter> impl_;
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explicit UdpSocketFd(unique_ptr<detail::UdpSocketFdImpl> impl);
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};
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} // namespace td
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