src/corosio/src/detail/endpoint_convert.hpp

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1		//
2		// Copyright (c) 2026 Vinnie Falco (vinnie.falco@gmail.com)
3		//
4		// Distributed under the Boost Software License, Version 1.0. (See accompanying
5		// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6		//
7		// Official repository: https://github.com/cppalliance/corosio
8		//
9
10		#ifndef BOOST_COROSIO_DETAIL_ENDPOINT_CONVERT_HPP
11		#define BOOST_COROSIO_DETAIL_ENDPOINT_CONVERT_HPP
12
13		#include <boost/corosio/endpoint.hpp>
14		#include <boost/corosio/detail/platform.hpp>
15
16		#include <cstring>
17
18		#if BOOST_COROSIO_POSIX
19		#include <netinet/in.h>
20		#include <arpa/inet.h>
21		#else
22		#ifndef WIN32_LEAN_AND_MEAN
23		#define WIN32_LEAN_AND_MEAN
24		#endif
25		#ifndef NOMINMAX
26		#define NOMINMAX
27		#endif
28		#include <WinSock2.h>
29		#include <Ws2tcpip.h>
30		#endif
31
32		namespace boost::corosio::detail {
33
34		/** Convert IPv4 endpoint to sockaddr_in.
35
36		@param ep The endpoint to convert. Must be IPv4 (is_v4() == true).
37		@return A sockaddr_in structure with fields in network byte order.
38		*/
39		inline sockaddr_in
40	8492	to_sockaddr_in(endpoint const& ep) noexcept
41		{
42	8492	sockaddr_in sa{};
43	8492	sa.sin_family = AF_INET;
44	8492	sa.sin_port = htons(ep.port());
45	8492	auto bytes = ep.v4_address().to_bytes();
46	8492	std::memcpy(&sa.sin_addr, bytes.data(), 4);
47	8492	return sa;
48		}
49
50		/** Convert IPv6 endpoint to sockaddr_in6.
51
52		@param ep The endpoint to convert. Must be IPv6 (is_v6() == true).
53		@return A sockaddr_in6 structure with fields in network byte order.
54		*/
55		inline sockaddr_in6
56	2	to_sockaddr_in6(endpoint const& ep) noexcept
57		{
58	2	sockaddr_in6 sa{};
59	2	sa.sin6_family = AF_INET6;
60	2	sa.sin6_port = htons(ep.port());
61	2	auto bytes = ep.v6_address().to_bytes();
62	2	std::memcpy(&sa.sin6_addr, bytes.data(), 16);
63	2	return sa;
64		}
65
66		/** Create endpoint from sockaddr_in.
67
68		@param sa The sockaddr_in structure with fields in network byte order.
69		@return An endpoint with address and port extracted from sa.
70		*/
71		inline endpoint
72	20426	from_sockaddr_in(sockaddr_in const& sa) noexcept
73		{
74		ipv4_address::bytes_type bytes;
75	20426	std::memcpy(bytes.data(), &sa.sin_addr, 4);
76	20426	return endpoint(ipv4_address(bytes), ntohs(sa.sin_port));
77		}
78
79		/** Create endpoint from sockaddr_in6.
80
81		@param sa The sockaddr_in6 structure with fields in network byte order.
82		@return An endpoint with address and port extracted from sa.
83		*/
84		inline endpoint
85	2	from_sockaddr_in6(sockaddr_in6 const& sa) noexcept
86		{
87		ipv6_address::bytes_type bytes;
88	2	std::memcpy(bytes.data(), &sa.sin6_addr, 16);
89	2	return endpoint(ipv6_address(bytes), ntohs(sa.sin6_port));
90		}
91
92		} // namespace boost::corosio::detail
93
94		#endif
95