2023-02-11 20:49:42 +00:00
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// This file Copyright © 2006-2023 Transmission authors and contributors.
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2022-01-20 18:27:56 +00:00
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// This file is licensed under the MIT (SPDX: MIT) license,
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// A copy of this license can be found in licenses/ .
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2006-07-16 19:39:23 +00:00
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2017-11-14 20:21:28 +00:00
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#pragma once
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2008-11-24 20:17:36 +00:00
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#ifndef __TRANSMISSION__
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2017-04-19 12:04:45 +00:00
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#error only libtransmission should #include this header.
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2008-11-24 20:17:36 +00:00
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#endif
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2022-10-24 18:40:12 +00:00
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#include <algorithm> // for std::copy_n
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2022-11-02 00:32:26 +00:00
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#include <array>
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2021-12-15 21:25:42 +00:00
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#include <cstddef> // size_t
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2023-07-11 16:57:29 +00:00
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#include <functional>
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2022-02-10 21:35:28 +00:00
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#include <optional>
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#include <string>
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2021-11-15 23:03:55 +00:00
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#include <string_view>
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2022-04-21 15:58:13 +00:00
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#include <utility> // std::pair
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2021-11-15 23:03:55 +00:00
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2014-07-04 00:00:07 +00:00
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#ifdef _WIN32
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2017-04-19 12:04:45 +00:00
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#include <ws2tcpip.h>
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2007-07-31 14:26:44 +00:00
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#else
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2023-07-08 15:24:03 +00:00
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#include <arpa/inet.h>
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2022-08-17 16:08:36 +00:00
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#include <cerrno>
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2017-04-19 12:04:45 +00:00
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#include <sys/socket.h>
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#include <netinet/in.h>
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2007-07-31 16:55:47 +00:00
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#endif
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2014-07-04 00:00:07 +00:00
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#ifdef _WIN32
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2021-10-06 14:26:07 +00:00
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using tr_socket_t = SOCKET;
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2017-04-19 12:04:45 +00:00
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#define TR_BAD_SOCKET INVALID_SOCKET
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#undef EADDRINUSE
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#define EADDRINUSE WSAEADDRINUSE
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#undef ECONNREFUSED
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#define ECONNREFUSED WSAECONNREFUSED
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#undef ECONNRESET
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#define ECONNRESET WSAECONNRESET
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#undef EHOSTUNREACH
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#define EHOSTUNREACH WSAEHOSTUNREACH
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#undef EINPROGRESS
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#define EINPROGRESS WSAEINPROGRESS
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#undef ENOTCONN
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#define ENOTCONN WSAENOTCONN
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#undef EWOULDBLOCK
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#define EWOULDBLOCK WSAEWOULDBLOCK
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#undef EAFNOSUPPORT
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#define EAFNOSUPPORT WSAEAFNOSUPPORT
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#undef ENETUNREACH
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#define ENETUNREACH WSAENETUNREACH
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#define sockerrno WSAGetLastError()
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2007-07-31 16:55:47 +00:00
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#else
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2017-04-19 12:04:45 +00:00
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/** @brief Platform-specific socket descriptor type. */
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2021-10-06 14:26:07 +00:00
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using tr_socket_t = int;
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2017-04-19 12:04:45 +00:00
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/** @brief Platform-specific invalid socket descriptor constant. */
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#define TR_BAD_SOCKET (-1)
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2015-03-18 07:34:26 +00:00
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2017-04-19 12:04:45 +00:00
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#define sockerrno errno
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2007-07-31 16:55:47 +00:00
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#endif
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2023-07-12 22:29:47 +00:00
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#include "libtransmission/tr-assert.h"
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#include "libtransmission/utils.h"
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2023-07-11 16:57:29 +00:00
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2022-04-21 15:58:13 +00:00
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/**
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* Literally just a port number.
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*
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* Exists so that you never have to wonder what byte order a port variable is in.
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*/
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class tr_port
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{
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public:
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tr_port() noexcept = default;
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[[nodiscard]] constexpr static tr_port fromHost(uint16_t hport) noexcept
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{
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return tr_port{ hport };
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}
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[[nodiscard]] static tr_port fromNetwork(uint16_t nport) noexcept
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{
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return tr_port{ ntohs(nport) };
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}
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[[nodiscard]] constexpr uint16_t host() const noexcept
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{
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return hport_;
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}
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[[nodiscard]] uint16_t network() const noexcept
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{
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return htons(hport_);
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}
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constexpr void setHost(uint16_t hport) noexcept
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{
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hport_ = hport;
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}
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void setNetwork(uint16_t nport) noexcept
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{
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hport_ = ntohs(nport);
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}
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2022-10-24 18:40:12 +00:00
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[[nodiscard]] static std::pair<tr_port, std::byte const*> fromCompact(std::byte const* compact) noexcept;
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2022-04-21 15:58:13 +00:00
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[[nodiscard]] constexpr auto operator<(tr_port const& that) const noexcept
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{
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return hport_ < that.hport_;
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}
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[[nodiscard]] constexpr auto operator==(tr_port const& that) const noexcept
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{
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return hport_ == that.hport_;
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}
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[[nodiscard]] constexpr auto operator!=(tr_port const& that) const noexcept
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{
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return hport_ != that.hport_;
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}
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[[nodiscard]] constexpr auto empty() const noexcept
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{
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return hport_ == 0;
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}
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constexpr void clear() noexcept
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{
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hport_ = 0;
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}
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private:
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2022-10-25 03:13:09 +00:00
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explicit constexpr tr_port(uint16_t hport) noexcept
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2022-04-21 15:58:13 +00:00
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: hport_{ hport }
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{
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}
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uint16_t hport_ = 0;
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};
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2022-12-23 16:56:27 +00:00
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enum tr_address_type
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{
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TR_AF_INET,
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TR_AF_INET6,
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NUM_TR_AF_INET_TYPES
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};
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2023-07-12 22:29:47 +00:00
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struct tr_socket_address;
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2021-10-06 14:26:07 +00:00
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struct tr_address
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2008-12-17 01:39:24 +00:00
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{
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2022-12-09 02:27:52 +00:00
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[[nodiscard]] static std::optional<tr_address> from_string(std::string_view address_sv);
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2023-07-12 22:29:47 +00:00
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[[nodiscard]] static std::optional<tr_socket_address> from_sockaddr(struct sockaddr const*);
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2022-12-09 02:27:52 +00:00
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[[nodiscard]] static std::pair<tr_address, std::byte const*> from_compact_ipv4(std::byte const* compact) noexcept;
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[[nodiscard]] static std::pair<tr_address, std::byte const*> from_compact_ipv6(std::byte const* compact) noexcept;
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2022-02-24 13:59:58 +00:00
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2022-12-08 22:44:19 +00:00
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// write the text form of the address, e.g. inet_ntop()
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2022-04-21 23:37:02 +00:00
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template<typename OutputIt>
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2022-12-08 22:44:19 +00:00
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OutputIt display_name(OutputIt out, tr_port port = {}) const;
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std::string_view display_name(char* out, size_t outlen, tr_port port = {}) const;
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[[nodiscard]] std::string display_name(tr_port port = {}) const;
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2022-04-21 23:37:02 +00:00
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2023-01-01 18:20:46 +00:00
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///
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[[nodiscard]] constexpr auto is_ipv4() const noexcept
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{
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return type == TR_AF_INET;
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}
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[[nodiscard]] constexpr auto is_ipv6() const noexcept
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{
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return type == TR_AF_INET6;
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}
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/// bt protocol compact form
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// compact addr only -- used e.g. as `yourip` value in extension protocol handshake
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2022-10-24 18:40:12 +00:00
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template<typename OutputIt>
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2023-01-01 18:20:46 +00:00
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static OutputIt to_compact_ipv4(OutputIt out, in_addr const* addr4)
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2022-10-24 18:40:12 +00:00
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{
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2023-01-01 18:20:46 +00:00
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return std::copy_n(reinterpret_cast<std::byte const*>(addr4), sizeof(*addr4), out);
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2022-10-24 18:40:12 +00:00
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}
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template<typename OutputIt>
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2023-01-01 18:20:46 +00:00
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static OutputIt to_compact_ipv6(OutputIt out, in6_addr const* addr6)
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2022-10-24 18:40:12 +00:00
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{
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2023-01-01 18:20:46 +00:00
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return std::copy_n(reinterpret_cast<std::byte const*>(addr6), sizeof(*addr6), out);
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2022-10-24 18:40:12 +00:00
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}
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template<typename OutputIt>
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2023-01-01 18:20:46 +00:00
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OutputIt to_compact(OutputIt out) const
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{
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return is_ipv4() ? to_compact_ipv4(out, &this->addr.addr4) : to_compact_ipv6(out, &this->addr.addr6);
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}
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// compact addr + port -- very common format used for peer exchange, dht, tracker announce responses
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template<typename OutputIt>
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static OutputIt to_compact_ipv4(OutputIt out, in_addr const* addr4, tr_port port)
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2022-10-24 18:40:12 +00:00
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{
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2023-01-01 18:20:46 +00:00
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out = tr_address::to_compact_ipv4(out, addr4);
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2022-10-24 18:40:12 +00:00
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auto const nport = port.network();
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2023-01-01 18:20:46 +00:00
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return std::copy_n(reinterpret_cast<std::byte const*>(&nport), sizeof(nport), out);
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2022-10-24 18:40:12 +00:00
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}
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template<typename OutputIt>
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2023-01-01 18:20:46 +00:00
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static OutputIt to_compact_ipv6(OutputIt out, in6_addr const* addr6, tr_port port)
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2022-10-24 18:40:12 +00:00
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{
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2023-01-01 18:20:46 +00:00
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out = tr_address::to_compact_ipv6(out, addr6);
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auto const nport = port.network();
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return std::copy_n(reinterpret_cast<std::byte const*>(&nport), sizeof(nport), out);
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2022-10-24 18:40:12 +00:00
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}
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template<typename OutputIt>
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2022-12-09 02:27:52 +00:00
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OutputIt to_compact_ipv4(OutputIt out, tr_port port) const
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2022-10-24 18:40:12 +00:00
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{
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2022-12-09 02:27:52 +00:00
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return to_compact_ipv4(out, &this->addr.addr4, port);
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2022-10-24 18:40:12 +00:00
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}
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template<typename OutputIt>
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2022-12-09 02:27:52 +00:00
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OutputIt to_compact_ipv6(OutputIt out, tr_port port) const
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2022-10-24 18:40:12 +00:00
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{
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2022-12-09 02:27:52 +00:00
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return to_compact_ipv6(out, &this->addr.addr6, port);
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2022-10-24 18:40:12 +00:00
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}
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template<typename OutputIt>
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2023-01-01 18:20:46 +00:00
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OutputIt to_compact(OutputIt out, tr_port port)
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2022-10-24 18:40:12 +00:00
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{
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2023-07-08 01:13:02 +00:00
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return is_ipv4() ? to_compact_ipv4(out, &this->addr.addr4, port) : to_compact_ipv6(out, &this->addr.addr6, port);
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2022-10-24 18:40:12 +00:00
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}
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2023-01-01 18:20:46 +00:00
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// compact sockaddr helpers
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2022-10-24 18:40:12 +00:00
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template<typename OutputIt>
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2023-01-01 18:20:46 +00:00
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static OutputIt to_compact_ipv4(OutputIt out, sockaddr_in const* sa4)
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2022-10-24 18:40:12 +00:00
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{
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2023-01-01 18:20:46 +00:00
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return to_compact_ipv4(out, &sa4->sin_addr, tr_port::fromNetwork(sa4->sin_port));
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2022-10-24 18:40:12 +00:00
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}
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2023-01-01 18:20:46 +00:00
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template<typename OutputIt>
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static OutputIt to_compact_ipv6(OutputIt out, sockaddr_in6 const* sa6)
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2022-07-10 01:03:40 +00:00
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{
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2023-01-01 18:20:46 +00:00
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return to_compact_ipv6(out, &sa6->sin6_addr, tr_port::fromNetwork(sa6->sin6_port));
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2022-07-10 01:03:40 +00:00
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}
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2022-04-21 23:37:02 +00:00
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2023-01-01 18:20:46 +00:00
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template<typename OutputIt>
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static OutputIt to_compact(OutputIt out, sockaddr const* saddr)
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2022-07-10 01:03:40 +00:00
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{
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2023-01-01 18:20:46 +00:00
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return saddr->sa_family == AF_INET ? to_compact_ipv4(out, reinterpret_cast<sockaddr_in const*>(saddr)) :
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to_compact_ipv6(out, reinterpret_cast<sockaddr_in6 const*>(saddr));
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}
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template<typename OutputIt>
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static OutputIt to_compact(OutputIt out, struct sockaddr_storage* ss)
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{
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return to_compact(out, reinterpret_cast<struct sockaddr*>(ss));
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2022-07-10 01:03:40 +00:00
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}
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2022-04-21 23:37:02 +00:00
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// comparisons
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[[nodiscard]] int compare(tr_address const& that) const noexcept;
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2022-02-24 13:59:58 +00:00
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2022-04-02 00:48:09 +00:00
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[[nodiscard]] bool operator==(tr_address const& that) const noexcept
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2022-02-24 13:59:58 +00:00
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{
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2022-04-21 23:37:02 +00:00
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return this->compare(that) == 0;
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2022-02-24 13:59:58 +00:00
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}
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2022-04-02 00:48:09 +00:00
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[[nodiscard]] bool operator<(tr_address const& that) const noexcept
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2022-02-24 13:59:58 +00:00
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{
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2022-04-21 23:37:02 +00:00
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return this->compare(that) < 0;
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2022-02-26 06:03:32 +00:00
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}
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2022-11-03 20:46:27 +00:00
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[[nodiscard]] bool operator<=(tr_address const& that) const noexcept
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{
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return this->compare(that) <= 0;
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}
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2022-04-02 00:48:09 +00:00
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[[nodiscard]] bool operator>(tr_address const& that) const noexcept
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2022-02-26 06:03:32 +00:00
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{
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2022-04-21 23:37:02 +00:00
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return this->compare(that) > 0;
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2022-02-24 13:59:58 +00:00
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}
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2022-04-21 22:06:00 +00:00
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2022-10-04 19:52:51 +00:00
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//
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2022-12-09 02:27:52 +00:00
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[[nodiscard]] std::pair<sockaddr_storage, socklen_t> to_sockaddr(tr_port port) const noexcept;
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2022-10-04 19:52:51 +00:00
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2022-12-25 00:53:50 +00:00
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[[nodiscard]] bool is_global_unicast_address() const noexcept;
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|
2022-04-21 22:06:00 +00:00
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|
|
tr_address_type type;
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|
|
|
union
|
|
|
|
{
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|
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|
struct in6_addr addr6;
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|
struct in_addr addr4;
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|
} addr;
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2008-12-15 00:17:08 +00:00
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|
2022-12-09 02:27:52 +00:00
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[[nodiscard]] static auto constexpr any_ipv4() noexcept
|
2022-11-06 16:35:48 +00:00
|
|
|
{
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|
return tr_address{ TR_AF_INET, { { { { INADDR_ANY } } } } };
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}
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|
2022-12-09 02:27:52 +00:00
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[[nodiscard]] static auto constexpr any_ipv6() noexcept
|
2022-11-06 16:35:48 +00:00
|
|
|
{
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|
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|
return tr_address{ TR_AF_INET6, { IN6ADDR_ANY_INIT } };
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|
}
|
2008-12-15 00:17:08 +00:00
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|
2022-12-09 02:27:52 +00:00
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[[nodiscard]] constexpr auto is_valid() const noexcept
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|
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|
{
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|
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|
return type == TR_AF_INET || type == TR_AF_INET6;
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|
}
|
2022-07-09 23:44:20 +00:00
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|
2023-04-16 00:30:20 +00:00
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|
[[nodiscard]] auto is_any() const noexcept
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|
|
{
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|
return *this == (is_ipv4() ? any_ipv4() : any_ipv6());
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|
}
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|
2022-12-09 02:27:52 +00:00
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[[nodiscard]] bool is_valid_for_peers(tr_port port) const noexcept;
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|
};
|
2008-12-18 05:55:22 +00:00
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|
2023-07-12 22:29:47 +00:00
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struct tr_socket_address
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|
{
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|
tr_socket_address() = default;
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tr_socket_address(tr_address const& address, tr_port port)
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: address_{ address }
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|
, port_{ port }
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{
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|
}
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|
[[nodiscard]] constexpr auto const& address() const noexcept
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|
|
|
{
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|
return address_;
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|
}
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|
[[nodiscard]] constexpr auto port() const noexcept
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|
|
|
{
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|
|
return port_;
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|
|
|
}
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|
[[nodiscard]] auto display_name() const noexcept
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|
|
|
{
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|
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|
return address_.display_name(port_);
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|
|
|
}
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|
[[nodiscard]] auto is_valid() const noexcept
|
|
|
|
{
|
|
|
|
return address_.is_valid();
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|
|
|
}
|
|
|
|
|
|
|
|
[[nodiscard]] int compare(tr_socket_address const& that) const noexcept
|
|
|
|
{
|
|
|
|
if (auto const val = tr_compare_3way(address_, that.address_); val != 0)
|
|
|
|
{
|
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
|
|
|
return tr_compare_3way(port_, that.port_);
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|
|
|
}
|
|
|
|
|
|
|
|
[[nodiscard]] auto operator<(tr_socket_address const& that) const noexcept
|
|
|
|
{
|
|
|
|
return compare(that) < 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
[[nodiscard]] auto operator==(tr_socket_address const& that) const noexcept
|
|
|
|
{
|
|
|
|
return compare(that) == 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
tr_address address_;
|
|
|
|
tr_port port_;
|
|
|
|
};
|
2023-07-05 16:33:50 +00:00
|
|
|
|
2023-07-11 16:57:29 +00:00
|
|
|
template<>
|
|
|
|
class std::hash<tr_socket_address>
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
std::size_t operator()(tr_socket_address const& socket_address) const noexcept
|
|
|
|
{
|
|
|
|
auto const& [addr, port] = socket_address;
|
|
|
|
return hash_combine(ip_hash(addr), port_hash(port));
|
|
|
|
}
|
|
|
|
|
|
|
|
private:
|
|
|
|
// https://stackoverflow.com/a/27952689/11390656
|
|
|
|
[[nodiscard]] static constexpr std::size_t hash_combine(std::size_t const& a, std::size_t const& b)
|
|
|
|
{
|
|
|
|
return a ^ (b + 0x9e3779b9U + (a << 6U) + (a >> 2U));
|
|
|
|
}
|
|
|
|
|
|
|
|
[[nodiscard]] static std::size_t ip_hash(tr_address const& addr) noexcept
|
|
|
|
{
|
|
|
|
switch (addr.type)
|
|
|
|
{
|
|
|
|
case TR_AF_INET:
|
|
|
|
return IPv4Hasher(addr.addr.addr4.s_addr);
|
|
|
|
case TR_AF_INET6:
|
|
|
|
return IPv6Hasher(
|
|
|
|
std::string_view{ reinterpret_cast<char const*>(addr.addr.addr6.s6_addr), sizeof(addr.addr.addr6.s6_addr) });
|
|
|
|
default:
|
|
|
|
TR_ASSERT_MSG(false, "Invalid type");
|
|
|
|
return {};
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
[[nodiscard]] static std::size_t port_hash(tr_port const& port) noexcept
|
|
|
|
{
|
|
|
|
return PortHasher(port.host());
|
|
|
|
}
|
|
|
|
|
|
|
|
constexpr static std::hash<uint32_t> IPv4Hasher{};
|
|
|
|
constexpr static std::hash<std::string_view> IPv6Hasher{};
|
|
|
|
constexpr static std::hash<uint16_t> PortHasher{};
|
|
|
|
};
|
|
|
|
|
2023-01-22 19:21:30 +00:00
|
|
|
// --- Sockets
|
2011-03-25 05:34:26 +00:00
|
|
|
|
|
|
|
struct tr_session;
|
|
|
|
|
2022-11-06 16:35:48 +00:00
|
|
|
tr_socket_t tr_netBindTCP(tr_address const& addr, tr_port port, bool suppress_msgs);
|
2007-03-23 08:28:01 +00:00
|
|
|
|
2023-07-05 16:33:50 +00:00
|
|
|
[[nodiscard]] std::optional<std::pair<tr_socket_address, tr_socket_t>> tr_netAccept(
|
2022-10-14 06:20:39 +00:00
|
|
|
tr_session* session,
|
|
|
|
tr_socket_t listening_sockfd);
|
2008-09-23 19:11:04 +00:00
|
|
|
|
2017-04-20 16:02:19 +00:00
|
|
|
void tr_netSetCongestionControl(tr_socket_t s, char const* algorithm);
|
2010-04-22 01:49:16 +00:00
|
|
|
|
2023-01-04 21:37:55 +00:00
|
|
|
void tr_net_close_socket(tr_socket_t fd);
|
2011-03-25 05:34:26 +00:00
|
|
|
|
2023-01-07 14:27:54 +00:00
|
|
|
// --- TOS / DSCP
|
2022-02-10 21:35:28 +00:00
|
|
|
|
2022-11-02 00:32:26 +00:00
|
|
|
/**
|
2023-01-23 16:26:11 +00:00
|
|
|
* A `toString()` / `from_string()` convenience wrapper around the TOS int value
|
2022-11-02 00:32:26 +00:00
|
|
|
*/
|
|
|
|
class tr_tos_t
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
constexpr tr_tos_t() = default;
|
|
|
|
|
|
|
|
constexpr explicit tr_tos_t(int value)
|
|
|
|
: value_{ value }
|
|
|
|
{
|
|
|
|
}
|
2022-02-10 21:35:28 +00:00
|
|
|
|
2022-11-02 00:32:26 +00:00
|
|
|
[[nodiscard]] constexpr operator int() const noexcept
|
|
|
|
{
|
|
|
|
return value_;
|
|
|
|
}
|
|
|
|
|
2022-12-09 02:27:52 +00:00
|
|
|
[[nodiscard]] static std::optional<tr_tos_t> from_string(std::string_view);
|
2022-11-02 00:32:26 +00:00
|
|
|
|
|
|
|
[[nodiscard]] std::string toString() const;
|
|
|
|
|
|
|
|
private:
|
|
|
|
int value_ = 0x04;
|
|
|
|
|
|
|
|
// RFCs 2474, 3246, 4594 & 8622
|
|
|
|
// Service class names are defined in RFC 4594, RFC 5865, and RFC 8622.
|
|
|
|
// Not all platforms have these IPTOS_ definitions, so hardcode them here
|
|
|
|
static auto constexpr Names = std::array<std::pair<int, std::string_view>, 28>{ {
|
|
|
|
{ 0x00, "cs0" }, // IPTOS_CLASS_CS0
|
|
|
|
{ 0x04, "le" },
|
|
|
|
{ 0x20, "cs1" }, // IPTOS_CLASS_CS1
|
|
|
|
{ 0x28, "af11" }, // IPTOS_DSCP_AF11
|
|
|
|
{ 0x30, "af12" }, // IPTOS_DSCP_AF12
|
|
|
|
{ 0x38, "af13" }, // IPTOS_DSCP_AF13
|
|
|
|
{ 0x40, "cs2" }, // IPTOS_CLASS_CS2
|
|
|
|
{ 0x48, "af21" }, // IPTOS_DSCP_AF21
|
|
|
|
{ 0x50, "af22" }, // IPTOS_DSCP_AF22
|
|
|
|
{ 0x58, "af23" }, // IPTOS_DSCP_AF23
|
|
|
|
{ 0x60, "cs3" }, // IPTOS_CLASS_CS3
|
|
|
|
{ 0x68, "af31" }, // IPTOS_DSCP_AF31
|
|
|
|
{ 0x70, "af32" }, // IPTOS_DSCP_AF32
|
|
|
|
{ 0x78, "af33" }, // IPTOS_DSCP_AF33
|
|
|
|
{ 0x80, "cs4" }, // IPTOS_CLASS_CS4
|
|
|
|
{ 0x88, "af41" }, // IPTOS_DSCP_AF41
|
|
|
|
{ 0x90, "af42" }, // IPTOS_DSCP_AF42
|
|
|
|
{ 0x98, "af43" }, // IPTOS_DSCP_AF43
|
|
|
|
{ 0xa0, "cs5" }, // IPTOS_CLASS_CS5
|
|
|
|
{ 0xb8, "ef" }, // IPTOS_DSCP_EF
|
|
|
|
{ 0xc0, "cs6" }, // IPTOS_CLASS_CS6
|
|
|
|
{ 0xe0, "cs7" }, // IPTOS_CLASS_CS7
|
|
|
|
|
|
|
|
// <netinet/ip.h> lists these TOS names as deprecated,
|
|
|
|
// but keep them defined here for backward compatibility
|
|
|
|
{ 0x00, "routine" }, // IPTOS_PREC_ROUTINE
|
|
|
|
{ 0x02, "lowcost" }, // IPTOS_LOWCOST
|
|
|
|
{ 0x02, "mincost" }, // IPTOS_MINCOST
|
|
|
|
{ 0x04, "reliable" }, // IPTOS_RELIABILITY
|
|
|
|
{ 0x08, "throughput" }, // IPTOS_THROUGHPUT
|
|
|
|
{ 0x10, "lowdelay" }, // IPTOS_LOWDELAY
|
|
|
|
} };
|
|
|
|
};
|
2022-02-10 21:35:28 +00:00
|
|
|
|
|
|
|
// set the IPTOS_ value for the specified socket
|
|
|
|
void tr_netSetTOS(tr_socket_t sock, int tos, tr_address_type type);
|
|
|
|
|
2010-06-30 21:24:36 +00:00
|
|
|
/**
|
|
|
|
* @brief get a human-representable string representing the network error.
|
|
|
|
* @param err an errno on Unix/Linux and an WSAError on win32)
|
|
|
|
*/
|
2022-09-09 02:49:51 +00:00
|
|
|
[[nodiscard]] std::string tr_net_strerror(int err);
|