// <experimental/internet> -*- C++ -*-
-// Copyright (C) 2015-2021 Free Software Foundation, Inc.
+// Copyright (C) 2015-2024 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
#pragma GCC system_header
+#include <bits/requires_hosted.h> // experimental is currently omitted
+
#if __cplusplus >= 201402L
#include <experimental/netfwd>
#include <sstream>
#include <cstdint>
#include <experimental/string_view>
+#include <bits/charconv.h>
#ifdef _GLIBCXX_HAVE_UNISTD_H
# include <unistd.h>
#endif
# include <netdb.h> // getaddrinfo etc.
#endif
+#if defined _WIN32 && __has_include(<ws2tcpip.h>)
+# include <ws2tcpip.h>
+#endif
+
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
host_not_found = EAI_NONAME,
host_not_found_try_again = EAI_AGAIN,
service_not_found = EAI_SERVICE
+ // N.B. POSIX defines additional errors that have no enumerator here:
+ // EAI_BADFLAGS, EAI_FAIL, EAI_FAMILY, EAI_MEMORY, EAI_SOCKTYPE, EAI_SYSTEM
+ // Some C libraries define additional errors:
+ // EAI_BADHINTS, EAI_OVERFLOW, EAI_PROTOCOL
+ // Some C libraries define additional (obsolete?) errors:
+ // EAI_ADDRFAMILY, EAI_NODATA
#endif
};
inline error_condition make_error_condition(resolver_errc __e) noexcept
{ return error_condition(static_cast<int>(__e), resolver_category()); }
+ /// @cond undocumented
+ inline error_code
+ __make_resolver_error_code(int __ai_err,
+ [[__maybe_unused__]] int __sys_err) noexcept
+ {
+#ifdef EAI_SYSTEM
+ if (__builtin_expect(__ai_err == EAI_SYSTEM, 0))
+ return error_code(__sys_err, std::generic_category());
+#endif
+ return error_code(__ai_err, resolver_category());
+ }
+ /// @endcond
+
/// @}
using port_type = uint_least16_t; ///< Type used for port numbers.
constexpr
address_v4(const bytes_type& __b)
- : _M_addr((__b[0] << 24) | (__b[1] << 16) | (__b[2] << 8) | __b[3])
+#if __has_builtin(__builtin_bit_cast)
+ : _M_addr(__builtin_bit_cast(uint_type, __b))
+#else
+ : _M_addr(_S_hton_32((__b[0] << 24) | (__b[1] << 16)
+ | (__b[2] << 8) | __b[3]))
+#endif
{ }
explicit constexpr
constexpr bytes_type
to_bytes() const noexcept
{
+#if __has_builtin(__builtin_bit_cast)
+ return __builtin_bit_cast(bytes_type, _M_addr);
+#else
+ auto __host = to_uint();
return bytes_type{
- (_M_addr >> 24) & 0xFF,
- (_M_addr >> 16) & 0xFF,
- (_M_addr >> 8) & 0xFF,
- _M_addr & 0xFF
+ (__host >> 24) & 0xFF,
+ (__host >> 16) & 0xFF,
+ (__host >> 8) & 0xFF,
+ __host & 0xFF
};
+#endif
}
constexpr uint_type
__string_with<_Allocator>
to_string(const _Allocator& __a = _Allocator()) const
{
-#ifdef _GLIBCXX_HAVE_ARPA_INET_H
+ auto __write = [__addr = to_uint()](char* __p, size_t) {
+ auto __to_chars = [](char* __p, uint8_t __v) {
+ unsigned __n = __v >= 100u ? 3 : __v >= 10u ? 2 : 1;
+ std::__detail::__to_chars_10_impl(__p, __n, __v);
+ return __p + __n;
+ };
+ const auto __begin = __p;
+ __p = __to_chars(__p, uint8_t(__addr >> 24));
+ for (int __i = 2; __i >= 0; __i--) {
+ *__p++ = '.';
+ __p = __to_chars(__p, uint8_t(__addr >> (__i * 8)));
+ }
+ return __p - __begin;
+ };
__string_with<_Allocator> __str(__a);
- __str.resize(INET_ADDRSTRLEN);
- if (inet_ntop(AF_INET, &_M_addr, &__str.front(), __str.size()))
- __str.erase(__str.find('\0'));
- else
- __str.resize(0);
- return __str;
+#if __cpp_lib_string_resize_and_overwrite
+ __str.resize_and_overwrite(15, __write);
#else
- std::__throw_system_error((int)__unsupported_err());
+ __str.resize(15);
+ __str.resize(__write(&__str.front(), 15));
#endif
+ return __str;
}
// static members:
_S_ntoh_32(uint32_t __n) { return __builtin_bswap32(__n); }
#endif
+#ifdef _GLIBCXX_HAVE_ARPA_INET_H
in_addr_t _M_addr; // network byte order
+#else
+ uint32_t _M_addr;
+#endif
};
/// An IPv6 address.
// constructors:
constexpr address() noexcept : _M_v4(), _M_is_v4(true) { }
+#if __cpp_constexpr_dynamic_alloc
constexpr
+#endif
address(const address& __a) noexcept : _M_uninit(), _M_is_v4(__a._M_is_v4)
{
if (_M_is_v4)
- ::new (std::addressof(_M_v4)) address_v4(__a.to_v4());
+ std::_Construct(std::addressof(_M_v4), __a.to_v4());
else
- ::new (std::addressof(_M_v6)) address_v6(__a.to_v6());
+ std::_Construct(std::addressof(_M_v6), __a.to_v6());
}
constexpr
address&
operator=(const address_v4& __a) noexcept
{
- ::new (std::addressof(_M_v4)) address_v4(__a);
+ std::_Construct(std::addressof(_M_v4), __a);
_M_is_v4 = true;
return *this;
}
address&
operator=(const address_v6& __a) noexcept
{
- ::new (std::addressof(_M_v6)) address_v6(__a);
+ std::_Construct(std::addressof(_M_v6), __a);
_M_is_v4 = false;
return *this;
}
inline address_v4
make_address_v4(string_view __str, error_code& __ec) noexcept
{
- char __buf[INET_ADDRSTRLEN];
+ char __buf[16]; // INET_ADDRSTRLEN isn't defined on Windows
auto __len = __str.copy(__buf, sizeof(__buf));
if (__len == sizeof(__buf))
{
{ return make_address(__str, __throw_on_error{"make_address"}); }
inline address
- make_address(const string& __str, error_code& __ec) noexcept; // TODO
+ make_address(const string& __str, error_code& __ec) noexcept
+ { return make_address(__str.c_str(), __ec); }
inline address
make_address(const string& __str)
/// @}
- bool
+ constexpr bool
operator==(const network_v4& __a, const network_v4& __b) noexcept;
- bool
+ constexpr bool
operator==(const network_v6& __a, const network_v6& __b) noexcept;
constexpr address_v4
netmask() const noexcept
{
- address_v4::uint_type __val = address_v4::broadcast().to_uint();
- __val >>= (32 - _M_prefix_len);
- __val <<= (32 - _M_prefix_len);
- return address_v4{__val};
+ address_v4 __m;
+ if (_M_prefix_len)
+ __m = address_v4(0xFFFFFFFFu << (32 - _M_prefix_len));
+ return __m;
}
constexpr address_v4
constexpr address_v4
broadcast() const noexcept
- { return address_v4{_M_addr.to_uint() | ~netmask().to_uint()}; }
+ {
+ auto __b = _M_addr.to_uint();
+ if (_M_prefix_len < 32)
+ __b |= 0xFFFFFFFFu >> _M_prefix_len;
+ return address_v4{__b};
+ }
address_v4_range
hosts() const noexcept
__string_with<_Allocator>
to_string(const _Allocator& __a = _Allocator()) const
{
- return address().to_string(__a) + '/'
- + std::to_string(prefix_length());
+ auto __str = address().to_string(__a);
+ const unsigned __addrlen = __str.length();
+ const unsigned __preflen = prefix_length() >= 10 ? 2 : 1;
+ auto __write = [=](char* __p, size_t __n) {
+ __p[__addrlen] = '/';
+ std::__detail::__to_chars_10_impl(__p + __addrlen + 1, __preflen,
+ (unsigned char)prefix_length());
+ return __n;
+ };
+ const unsigned __len = __addrlen + 1 + __preflen;
+#if __cpp_lib_string_resize_and_overwrite
+ __str.resize_and_overwrite(__len, __write);
+#else
+ __str.resize(__len);
+ __write(&__str.front(), __len);
+#endif
+ return __str;
}
private:
* @{
*/
- inline bool
+ constexpr bool
operator==(const network_v4& __a, const network_v4& __b) noexcept
{
return __a.address() == __b.address()
&& __a.prefix_length() == __b.prefix_length();
}
- inline bool
+ constexpr bool
operator!=(const network_v4& __a, const network_v4& __b) noexcept
{ return !(__a == __b); }
* @{
*/
- inline bool
+ constexpr bool
operator==(const network_v6& __a, const network_v6& __b) noexcept
{
return __a.address() == __b.address()
&& __a.prefix_length() == __b.prefix_length();
}
- inline bool
+ constexpr bool
operator!=(const network_v6& __a, const network_v6& __b) noexcept
{ return !(__a == __b); }
operator<<(basic_ostream<_CharT, _Traits>& __os, const network_v6& __net)
{ return __os << __net.to_string(); }
+#if defined IPPROTO_TCP || defined IPPROTO_UDP
/// An IP endpoint.
template<typename _InternetProtocol>
class basic_endpoint
// constructors:
- constexpr
+ _GLIBCXX20_CONSTEXPR
basic_endpoint() noexcept : _M_data()
- { _M_data._M_v4.sin_family = protocol_type::v4().family(); }
+ {
+ _M_data._M_v4.sin_family = protocol_type::v4().family();
+ // If in_addr contains a union, make the correct member active:
+ if (std::__is_constant_evaluated())
+ std::_Construct(&_M_data._M_v4.sin_addr.s_addr);
+ }
- constexpr
+ _GLIBCXX20_CONSTEXPR
basic_endpoint(const protocol_type& __proto,
port_type __port_num) noexcept
: _M_data()
{
- __glibcxx_assert(__proto == protocol_type::v4()
- || __proto == protocol_type::v6());
+ if (__proto == protocol_type::v4())
+ {
+ _M_data._M_v4.sin_family = protocol_type::v4().family();
+ _M_data._M_v4.sin_port = address_v4::_S_hton_16(__port_num);
+ if (std::__is_constant_evaluated())
+ std::_Construct(&_M_data._M_v4.sin_addr.s_addr);
+ }
+ else if (__proto == protocol_type::v6())
+ {
+ std::_Construct(&_M_data._M_v6);
+ _M_data._M_v6.sin6_family = __proto.family();
+ _M_data._M_v6.sin6_port = address_v4::_S_hton_16(__port_num);
+ _M_data._M_v6.sin6_scope_id = 0;
+ if (std::__is_constant_evaluated())
+ std::_Construct(&_M_data._M_v6.sin6_addr.s6_addr);
+ }
+ else
+ {
+ __glibcxx_assert(__proto == protocol_type::v4()
+ || __proto == protocol_type::v6());
- _M_data._M_v4.sin_family = __proto.family();
- _M_data._M_v4.sin_port = address_v4::_S_hton_16(__port_num);
+ }
}
- constexpr
+ _GLIBCXX20_CONSTEXPR
basic_endpoint(const ip::address& __addr,
port_type __port_num) noexcept
: _M_data()
{
_M_data._M_v4.sin_family = protocol_type::v4().family();
_M_data._M_v4.sin_port = address_v4::_S_hton_16(__port_num);
- _M_data._M_v4.sin_addr.s_addr = __addr._M_v4._M_addr;
+ std::_Construct(&_M_data._M_v4.sin_addr.s_addr,
+ __addr._M_v4._M_addr);
}
else
{
- _M_data._M_v6 = {};
+ std::_Construct(&_M_data._M_v6);
_M_data._M_v6.sin6_family = protocol_type::v6().family();
_M_data._M_v6.sin6_port = address_v4::_S_hton_16(__port_num);
- __builtin_memcpy(_M_data._M_v6.sin6_addr.s6_addr,
- __addr._M_v6._M_bytes.data(), 16);
+ if (std::__is_constant_evaluated())
+ std::_Construct(&_M_data._M_v6.sin6_addr.s6_addr);
+ uint8_t* __s6a = _M_data._M_v6.sin6_addr.s6_addr;
+ for (int __i = 0; __i < 16; ++__i)
+ __s6a[__i] = __addr._M_v6._M_bytes[__i];
_M_data._M_v6.sin6_scope_id = __addr._M_v6._M_scope_id;
}
}
// members:
+
constexpr protocol_type protocol() const noexcept
{
return _M_is_v6() ? protocol_type::v6() : protocol_type::v4();
constexpr ip::address
address() const noexcept
{
- ip::address __addr;
if (_M_is_v6())
{
- __builtin_memcpy(&__addr._M_v6._M_bytes,
- _M_data._M_v6.sin6_addr.s6_addr, 16);
- __addr._M_is_v4 = false;
+ address_v6 __v6;
+ const uint8_t* __s6a = _M_data._M_v6.sin6_addr.s6_addr;
+ for (int __i = 0; __i < 16; ++__i)
+ __v6._M_bytes[__i] = __s6a[__i];
+ __v6._M_scope_id = _M_data._M_v6.sin6_scope_id;
+ return __v6;
}
else
{
- __builtin_memcpy(&__addr._M_v4._M_addr,
- &_M_data._M_v4.sin_addr.s_addr, 4);
+ address_v4 __v4;
+ __v4._M_addr = _M_data._M_v4.sin_addr.s_addr;
+ return __v4;
}
- return __addr;
}
void
{
if (__addr.is_v6())
{
- _M_data._M_v6 = {};
+ std::_Construct(&_M_data._M_v6);
_M_data._M_v6.sin6_family = protocol_type::v6().family();
__builtin_memcpy(_M_data._M_v6.sin6_addr.s6_addr,
__addr._M_v6._M_bytes.data(), 16);
}
else
{
+ std::_Construct(&_M_data._M_v4);
_M_data._M_v4.sin_family = protocol_type::v4().family();
_M_data._M_v4.sin_addr.s_addr = __addr._M_v4._M_addr;
}
constexpr port_type
port() const noexcept
- { return address_v4::_S_ntoh_16(_M_data._M_v4.sin_port); }
+ {
+ port_type __p = 0;
+ if (_M_is_v6())
+ __p = _M_data._M_v6.sin6_port;
+ else
+ __p = _M_data._M_v4.sin_port;
+ return address_v4::_S_ntoh_16(__p);
+ }
void
port(port_type __port_num) noexcept
- { _M_data._M_v4.sin_port = address_v4::_S_hton_16(__port_num); }
+ {
+ __port_num = address_v4::_S_hton_16(__port_num);
+ if (_M_is_v6())
+ _M_data._M_v6.sin6_port = __port_num;
+ else
+ _M_data._M_v4.sin_port = __port_num;
+ }
void* data() noexcept { return &_M_data; }
const void* data() const noexcept { return &_M_data; }
- constexpr size_t size() const noexcept
+ constexpr size_t
+ size() const noexcept
{ return _M_is_v6() ? sizeof(sockaddr_in6) : sizeof(sockaddr_in); }
void
sockaddr_in6 _M_v6;
} _M_data;
- constexpr bool _M_is_v6() const noexcept
- { return _M_data._M_v4.sin_family == AF_INET6; }
+ constexpr bool
+ _M_is_v6() const noexcept
+ {
+ // For constexpr eval we can just detect which union member is active.
+ // i.e. emulate P2641R1's std::is_active_member(&_M_data._M_v6)).
+ if (std::__is_constant_evaluated())
+ return __builtin_constant_p(_M_data._M_v6.sin6_family);
+ return _M_data._M_v6.sin6_family == AF_INET6;
+ }
};
/** basic_endpoint comparisons
*/
template<typename _InternetProtocol>
- inline bool
+ constexpr bool
operator==(const basic_endpoint<_InternetProtocol>& __a,
const basic_endpoint<_InternetProtocol>& __b)
{ return __a.address() == __b.address() && __a.port() == __b.port(); }
template<typename _InternetProtocol>
- inline bool
+ constexpr bool
operator!=(const basic_endpoint<_InternetProtocol>& __a,
const basic_endpoint<_InternetProtocol>& __b)
{ return !(__a == __b); }
template<typename _InternetProtocol>
- inline bool
+ constexpr bool
operator< (const basic_endpoint<_InternetProtocol>& __a,
const basic_endpoint<_InternetProtocol>& __b)
{
}
template<typename _InternetProtocol>
- inline bool
+ constexpr bool
operator> (const basic_endpoint<_InternetProtocol>& __a,
const basic_endpoint<_InternetProtocol>& __b)
{ return __b < __a; }
template<typename _InternetProtocol>
- inline bool
+ constexpr bool
operator<=(const basic_endpoint<_InternetProtocol>& __a,
const basic_endpoint<_InternetProtocol>& __b)
{ return !(__b < __a); }
template<typename _InternetProtocol>
- inline bool
+ constexpr bool
operator>=(const basic_endpoint<_InternetProtocol>& __a,
const basic_endpoint<_InternetProtocol>& __b)
{ return !(__a < __b); }
#ifdef AI_NUMERICSERV
static constexpr flags numeric_service = (flags)AI_NUMERICSERV;
#endif
+#ifdef AI_V4MAPPED
static constexpr flags v4_mapped = (flags)AI_V4MAPPED;
+#endif
+#ifdef AI_ALL
static constexpr flags all_matching = (flags)AI_ALL;
+#endif
+#ifdef AI_ADDRCONFIG
static constexpr flags address_configured = (flags)AI_ADDRCONFIG;
+#endif
friend constexpr flags
operator&(flags __f1, flags __f2) noexcept
if (int __err = ::getaddrinfo(__h, __s, &__hints, &__sai._M_p))
{
- __ec.assign(__err, resolver_category());
+ __ec = ip::__make_resolver_error_code(__err, errno);
return;
}
__ec.clear();
basic_resolver_results(const endpoint_type& __ep, error_code& __ec)
{
#ifdef _GLIBCXX_HAVE_NETDB_H
- char __host_name[256];
- char __service_name[128];
+ char __host_name[1025]; // glibc NI_MAXHOST
+ char __service_name[32]; // glibc NI_MAXSERV
int __flags = 0;
if (__ep.protocol().type() == SOCK_DGRAM)
__flags |= NI_DGRAM;
__flags);
}
if (__err)
- __ec.assign(__err, resolver_category());
+ __ec = ip::__make_resolver_error_code(__err, errno);
else
{
__ec.clear();
__ec = std::make_error_code(errc::operation_not_supported);
#endif
}
+#endif // IPPROTO_TCP || IPPROTO_UDP
/** The name of the local host.
* @{
using resolver = basic_resolver<tcp>; ///< A TCP resolver.
using socket = basic_stream_socket<tcp>; ///< A TCP socket.
using acceptor = basic_socket_acceptor<tcp>; ///< A TCP acceptor.
- using iostream = basic_socket_iostream<tcp>; /// A TCP iostream.
+ using iostream = basic_socket_iostream<tcp>; ///< A TCP iostream.
#ifdef TCP_NODELAY
/// Disable coalescing of small segments (i.e. the Nagle algorithm).
projects / thirdparty / gcc.git / blobdiff