libs/corosio/src/corosio/src/detail/endpoint_convert.hpp

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1		//
2		// Copyright (c) 2026 Vinnie Falco (vinnie dot falco at gmail dot 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
40		sockaddr_in
41	4837	to_sockaddr_in(endpoint const& ep) noexcept
42		{
43	4837	sockaddr_in sa{};
44	4837	sa.sin_family = AF_INET;
45	4837	sa.sin_port = htons(ep.port());
46	4837	auto bytes = ep.v4_address().to_bytes();
47	4837	std::memcpy(&sa.sin_addr, bytes.data(), 4);
48	4837	return sa;
49		}
50
51		/** Convert IPv6 endpoint to sockaddr_in6.
52
53		@param ep The endpoint to convert. Must be IPv6 (is_v6() == true).
54		@return A sockaddr_in6 structure with fields in network byte order.
55		*/
56		inline
57		sockaddr_in6
58	2	to_sockaddr_in6(endpoint const& ep) noexcept
59		{
60	2	sockaddr_in6 sa{};
61	2	sa.sin6_family = AF_INET6;
62	2	sa.sin6_port = htons(ep.port());
63	2	auto bytes = ep.v6_address().to_bytes();
64	2	std::memcpy(&sa.sin6_addr, bytes.data(), 16);
65	2	return sa;
66		}
67
68		/** Create endpoint from sockaddr_in.
69
70		@param sa The sockaddr_in structure with fields in network byte order.
71		@return An endpoint with address and port extracted from sa.
72		*/
73		inline
74		endpoint
75	14249	from_sockaddr_in(sockaddr_in const& sa) noexcept
76		{
77		ipv4_address::bytes_type bytes;
78	14249	std::memcpy(bytes.data(), &sa.sin_addr, 4);
79	14249	return endpoint(ipv4_address(bytes), ntohs(sa.sin_port));
80		}
81
82		/** Create endpoint from sockaddr_in6.
83
84		@param sa The sockaddr_in6 structure with fields in network byte order.
85		@return An endpoint with address and port extracted from sa.
86		*/
87		inline
88		endpoint
89	2	from_sockaddr_in6(sockaddr_in6 const& sa) noexcept
90		{
91		ipv6_address::bytes_type bytes;
92	2	std::memcpy(bytes.data(), &sa.sin6_addr, 16);
93	2	return endpoint(ipv6_address(bytes), ntohs(sa.sin6_port));
94		}
95
96		} // namespace boost::corosio::detail
97
98		#endif
99