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353b0b11 FG |
1 | use crate::fd::OwnedFd; |
2 | use crate::net::{SocketAddr, SocketAddrAny, SocketAddrV4, SocketAddrV6}; | |
3 | use crate::{backend, io}; | |
4 | use backend::fd::{AsFd, BorrowedFd}; | |
5 | ||
6 | #[cfg(unix)] | |
7 | pub use backend::net::addr::SocketAddrUnix; | |
8 | pub use backend::net::types::{ | |
9 | AcceptFlags, AddressFamily, Protocol, Shutdown, SocketFlags, SocketType, | |
10 | }; | |
11 | ||
12 | impl Default for Protocol { | |
13 | #[inline] | |
14 | fn default() -> Self { | |
15 | Self::IP | |
16 | } | |
17 | } | |
18 | ||
19 | /// `socket(domain, type_, protocol)`—Creates a socket. | |
20 | /// | |
21 | /// POSIX guarantees that `socket` will use the lowest unused file descriptor, | |
22 | /// however it is not safe in general to rely on this, as file descriptors | |
23 | /// may be unexpectedly allocated on other threads or in libraries. | |
24 | /// | |
25 | /// # References | |
26 | /// - [POSIX] | |
27 | /// - [Linux] | |
28 | /// - [Apple] | |
29 | /// - [Winsock2] | |
30 | /// | |
31 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/socket.html | |
32 | /// [Linux]: https://man7.org/linux/man-pages/man2/socket.2.html | |
33 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/socket.2.html | |
34 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-socket | |
35 | #[inline] | |
36 | pub fn socket(domain: AddressFamily, type_: SocketType, protocol: Protocol) -> io::Result<OwnedFd> { | |
37 | backend::net::syscalls::socket(domain, type_, protocol) | |
38 | } | |
39 | ||
40 | /// `socket_with(domain, type_ | flags, protocol)`—Creates a socket, with | |
41 | /// flags. | |
42 | /// | |
43 | /// POSIX guarantees that `socket` will use the lowest unused file descriptor, | |
44 | /// however it is not safe in general to rely on this, as file descriptors | |
45 | /// may be unexpectedly allocated on other threads or in libraries. | |
46 | /// | |
47 | /// `socket_with` is the same as [`socket`] but adds an additional flags | |
48 | /// operand. | |
49 | /// | |
50 | /// # References | |
51 | /// - [POSIX] | |
52 | /// - [Linux] | |
53 | /// - [Apple] | |
54 | /// - [Winsock2] | |
55 | /// | |
56 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/socket.html | |
57 | /// [Linux]: https://man7.org/linux/man-pages/man2/socket.2.html | |
58 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/socket.2.html | |
59 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-socket | |
60 | #[inline] | |
61 | pub fn socket_with( | |
62 | domain: AddressFamily, | |
63 | type_: SocketType, | |
64 | flags: SocketFlags, | |
65 | protocol: Protocol, | |
66 | ) -> io::Result<OwnedFd> { | |
67 | backend::net::syscalls::socket_with(domain, type_, flags, protocol) | |
68 | } | |
69 | ||
70 | /// `bind(sockfd, addr)`—Binds a socket to an IP address. | |
71 | /// | |
72 | /// # References | |
73 | /// - [POSIX] | |
74 | /// - [Linux] | |
75 | /// - [Apple] | |
76 | /// - [Winsock2] | |
77 | /// | |
78 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/bind.html | |
79 | /// [Linux]: https://man7.org/linux/man-pages/man2/bind.2.html | |
80 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/bind.2.html | |
81 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-bind | |
82 | pub fn bind<Fd: AsFd>(sockfd: Fd, addr: &SocketAddr) -> io::Result<()> { | |
83 | _bind(sockfd.as_fd(), addr) | |
84 | } | |
85 | ||
86 | fn _bind(sockfd: BorrowedFd<'_>, addr: &SocketAddr) -> io::Result<()> { | |
87 | match addr { | |
88 | SocketAddr::V4(v4) => backend::net::syscalls::bind_v4(sockfd, v4), | |
89 | SocketAddr::V6(v6) => backend::net::syscalls::bind_v6(sockfd, v6), | |
90 | } | |
91 | } | |
92 | ||
93 | /// `bind(sockfd, addr)`—Binds a socket to an address. | |
94 | /// | |
95 | /// # References | |
96 | /// - [POSIX] | |
97 | /// - [Linux] | |
98 | /// - [Apple] | |
99 | /// - [Winsock2] | |
100 | /// | |
101 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/bind.html | |
102 | /// [Linux]: https://man7.org/linux/man-pages/man2/bind.2.html | |
103 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/bind.2.html | |
104 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-bind | |
105 | #[doc(alias = "bind")] | |
106 | pub fn bind_any<Fd: AsFd>(sockfd: Fd, addr: &SocketAddrAny) -> io::Result<()> { | |
107 | _bind_any(sockfd.as_fd(), addr) | |
108 | } | |
109 | ||
110 | fn _bind_any(sockfd: BorrowedFd<'_>, addr: &SocketAddrAny) -> io::Result<()> { | |
111 | match addr { | |
112 | SocketAddrAny::V4(v4) => backend::net::syscalls::bind_v4(sockfd, v4), | |
113 | SocketAddrAny::V6(v6) => backend::net::syscalls::bind_v6(sockfd, v6), | |
114 | #[cfg(unix)] | |
115 | SocketAddrAny::Unix(unix) => backend::net::syscalls::bind_unix(sockfd, unix), | |
116 | } | |
117 | } | |
118 | ||
119 | /// `bind(sockfd, addr, sizeof(struct sockaddr_in))`—Binds a socket to an | |
120 | /// IPv4 address. | |
121 | /// | |
122 | /// # References | |
123 | /// - [POSIX] | |
124 | /// - [Linux] | |
125 | /// - [Apple] | |
126 | /// - [Winsock2] | |
127 | /// | |
128 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/bind.html | |
129 | /// [Linux]: https://man7.org/linux/man-pages/man2/bind.2.html | |
130 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/bind.2.html | |
131 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-bind | |
132 | #[inline] | |
133 | #[doc(alias = "bind")] | |
134 | pub fn bind_v4<Fd: AsFd>(sockfd: Fd, addr: &SocketAddrV4) -> io::Result<()> { | |
135 | backend::net::syscalls::bind_v4(sockfd.as_fd(), addr) | |
136 | } | |
137 | ||
138 | /// `bind(sockfd, addr, sizeof(struct sockaddr_in6))`—Binds a socket to an | |
139 | /// IPv6 address. | |
140 | /// | |
141 | /// # References | |
142 | /// - [POSIX] | |
143 | /// - [Linux] | |
144 | /// - [Apple] | |
145 | /// - [Winsock2] | |
146 | /// | |
147 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/bind.html | |
148 | /// [Linux]: https://man7.org/linux/man-pages/man2/bind.2.html | |
149 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/bind.2.html | |
150 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-bind | |
151 | #[inline] | |
152 | #[doc(alias = "bind")] | |
153 | pub fn bind_v6<Fd: AsFd>(sockfd: Fd, addr: &SocketAddrV6) -> io::Result<()> { | |
154 | backend::net::syscalls::bind_v6(sockfd.as_fd(), addr) | |
155 | } | |
156 | ||
157 | /// `bind(sockfd, addr, sizeof(struct sockaddr_un))`—Binds a socket to a | |
158 | /// Unix-domain address. | |
159 | /// | |
160 | /// # References | |
161 | /// - [POSIX] | |
162 | /// - [Linux] | |
163 | /// - [Apple] | |
164 | /// - [Winsock2] | |
165 | /// | |
166 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/bind.html | |
167 | /// [Linux]: https://man7.org/linux/man-pages/man2/bind.2.html | |
168 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/bind.2.html | |
169 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-bind | |
170 | #[cfg(unix)] | |
171 | #[inline] | |
172 | #[doc(alias = "bind")] | |
173 | pub fn bind_unix<Fd: AsFd>(sockfd: Fd, addr: &SocketAddrUnix) -> io::Result<()> { | |
174 | backend::net::syscalls::bind_unix(sockfd.as_fd(), addr) | |
175 | } | |
176 | ||
177 | /// `connect(sockfd, addr)`—Initiates a connection to an IP address. | |
178 | /// | |
179 | /// # References | |
180 | /// - [POSIX] | |
181 | /// - [Linux] | |
182 | /// - [Apple] | |
183 | /// - [Winsock2] | |
184 | /// | |
185 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/connect.html | |
186 | /// [Linux]: https://man7.org/linux/man-pages/man2/connect.2.html | |
187 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/connect.2.html | |
188 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-connect | |
189 | pub fn connect<Fd: AsFd>(sockfd: Fd, addr: &SocketAddr) -> io::Result<()> { | |
190 | _connect(sockfd.as_fd(), addr) | |
191 | } | |
192 | ||
193 | fn _connect(sockfd: BorrowedFd<'_>, addr: &SocketAddr) -> io::Result<()> { | |
194 | match addr { | |
195 | SocketAddr::V4(v4) => backend::net::syscalls::connect_v4(sockfd, v4), | |
196 | SocketAddr::V6(v6) => backend::net::syscalls::connect_v6(sockfd, v6), | |
197 | } | |
198 | } | |
199 | ||
200 | /// `connect(sockfd, addr)`—Initiates a connection. | |
201 | /// | |
202 | /// # References | |
203 | /// - [POSIX] | |
204 | /// - [Linux] | |
205 | /// - [Apple] | |
206 | /// - [Winsock2] | |
207 | /// | |
208 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/connect.html | |
209 | /// [Linux]: https://man7.org/linux/man-pages/man2/connect.2.html | |
210 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/connect.2.html | |
211 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-connect | |
212 | #[doc(alias = "connect")] | |
213 | pub fn connect_any<Fd: AsFd>(sockfd: Fd, addr: &SocketAddrAny) -> io::Result<()> { | |
214 | _connect_any(sockfd.as_fd(), addr) | |
215 | } | |
216 | ||
217 | fn _connect_any(sockfd: BorrowedFd<'_>, addr: &SocketAddrAny) -> io::Result<()> { | |
218 | match addr { | |
219 | SocketAddrAny::V4(v4) => backend::net::syscalls::connect_v4(sockfd, v4), | |
220 | SocketAddrAny::V6(v6) => backend::net::syscalls::connect_v6(sockfd, v6), | |
221 | #[cfg(unix)] | |
222 | SocketAddrAny::Unix(unix) => backend::net::syscalls::connect_unix(sockfd, unix), | |
223 | } | |
224 | } | |
225 | ||
226 | /// `connect(sockfd, addr, sizeof(struct sockaddr_in))`—Initiates a | |
227 | /// connection to an IPv4 address. | |
228 | /// | |
229 | /// # References | |
230 | /// - [POSIX] | |
231 | /// - [Linux] | |
232 | /// - [Apple] | |
233 | /// - [Winsock2] | |
234 | /// | |
235 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/connect.html | |
236 | /// [Linux]: https://man7.org/linux/man-pages/man2/connect.2.html | |
237 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/connect.2.html | |
238 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-connect | |
239 | #[inline] | |
240 | #[doc(alias = "connect")] | |
241 | pub fn connect_v4<Fd: AsFd>(sockfd: Fd, addr: &SocketAddrV4) -> io::Result<()> { | |
242 | backend::net::syscalls::connect_v4(sockfd.as_fd(), addr) | |
243 | } | |
244 | ||
245 | /// `connect(sockfd, addr, sizeof(struct sockaddr_in6))`—Initiates a | |
246 | /// connection to an IPv6 address. | |
247 | /// | |
248 | /// # References | |
249 | /// - [POSIX] | |
250 | /// - [Linux] | |
251 | /// - [Apple] | |
252 | /// - [Winsock2] | |
253 | /// | |
254 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/connect.html | |
255 | /// [Linux]: https://man7.org/linux/man-pages/man2/connect.2.html | |
256 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/connect.2.html | |
257 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-connect | |
258 | #[inline] | |
259 | #[doc(alias = "connect")] | |
260 | pub fn connect_v6<Fd: AsFd>(sockfd: Fd, addr: &SocketAddrV6) -> io::Result<()> { | |
261 | backend::net::syscalls::connect_v6(sockfd.as_fd(), addr) | |
262 | } | |
263 | ||
264 | /// `connect(sockfd, addr, sizeof(struct sockaddr_un))`—Initiates a | |
265 | /// connection to a Unix-domain address. | |
266 | /// | |
267 | /// # References | |
268 | /// - [POSIX] | |
269 | /// - [Linux] | |
270 | /// - [Apple] | |
271 | /// - [Winsock2] | |
272 | /// | |
273 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/connect.html | |
274 | /// [Linux]: https://man7.org/linux/man-pages/man2/connect.2.html | |
275 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/connect.2.html | |
276 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-connect | |
277 | #[cfg(unix)] | |
278 | #[inline] | |
279 | #[doc(alias = "connect")] | |
280 | pub fn connect_unix<Fd: AsFd>(sockfd: Fd, addr: &SocketAddrUnix) -> io::Result<()> { | |
281 | backend::net::syscalls::connect_unix(sockfd.as_fd(), addr) | |
282 | } | |
283 | ||
284 | /// `listen(fd, backlog)`—Enables listening for incoming connections. | |
285 | /// | |
286 | /// # References | |
287 | /// - [POSIX] | |
288 | /// - [Linux] | |
289 | /// - [Apple] | |
290 | /// - [Winsock2] | |
291 | /// | |
292 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/listen.html | |
293 | /// [Linux]: https://man7.org/linux/man-pages/man2/listen.2.html | |
294 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/listen.2.html | |
295 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-listen | |
296 | #[inline] | |
297 | pub fn listen<Fd: AsFd>(sockfd: Fd, backlog: i32) -> io::Result<()> { | |
298 | backend::net::syscalls::listen(sockfd.as_fd(), backlog) | |
299 | } | |
300 | ||
301 | /// `accept(fd, NULL, NULL)`—Accepts an incoming connection. | |
302 | /// | |
303 | /// Use [`acceptfrom`] to retrieve the peer address. | |
304 | /// | |
305 | /// POSIX guarantees that `accept` will use the lowest unused file descriptor, | |
306 | /// however it is not safe in general to rely on this, as file descriptors may | |
307 | /// be unexpectedly allocated on other threads or in libraries. | |
308 | /// | |
309 | /// # References | |
310 | /// - [POSIX] | |
311 | /// - [Linux] | |
312 | /// - [Apple] | |
313 | /// - [Winsock2] | |
314 | /// | |
315 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/accept.html | |
316 | /// [Linux]: https://man7.org/linux/man-pages/man2/accept.2.html | |
317 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/accept.2.html | |
318 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-accept | |
319 | #[inline] | |
320 | #[doc(alias = "accept4")] | |
321 | pub fn accept<Fd: AsFd>(sockfd: Fd) -> io::Result<OwnedFd> { | |
322 | backend::net::syscalls::accept(sockfd.as_fd()) | |
323 | } | |
324 | ||
325 | /// `accept4(fd, NULL, NULL, flags)`—Accepts an incoming connection, with | |
326 | /// flags. | |
327 | /// | |
328 | /// Use [`acceptfrom_with`] to retrieve the peer address. | |
329 | /// | |
330 | /// Even though POSIX guarantees that this will use the lowest unused file | |
331 | /// descriptor, it is not safe in general to rely on this, as file descriptors | |
332 | /// may be unexpectedly allocated on other threads or in libraries. | |
333 | /// | |
334 | /// `accept_with` is the same as [`accept`] but adds an additional flags | |
335 | /// operand. | |
336 | /// | |
337 | /// # References | |
338 | /// - [Linux] | |
339 | /// | |
340 | /// [Linux]: https://man7.org/linux/man-pages/man2/accept4.2.html | |
341 | #[inline] | |
342 | #[doc(alias = "accept4")] | |
343 | pub fn accept_with<Fd: AsFd>(sockfd: Fd, flags: AcceptFlags) -> io::Result<OwnedFd> { | |
344 | backend::net::syscalls::accept_with(sockfd.as_fd(), flags) | |
345 | } | |
346 | ||
347 | /// `accept(fd, &addr, &len)`—Accepts an incoming connection and returns the | |
348 | /// peer address. | |
349 | /// | |
350 | /// Use [`accept`] if the peer address isn't needed. | |
351 | /// | |
352 | /// # References | |
353 | /// - [POSIX] | |
354 | /// - [Linux] | |
355 | /// - [Apple] | |
356 | /// - [Winsock2] | |
357 | /// | |
358 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/accept.html | |
359 | /// [Linux]: https://man7.org/linux/man-pages/man2/accept.2.html | |
360 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/accept.2.html | |
361 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-accept | |
362 | #[inline] | |
363 | #[doc(alias = "accept4")] | |
364 | pub fn acceptfrom<Fd: AsFd>(sockfd: Fd) -> io::Result<(OwnedFd, Option<SocketAddrAny>)> { | |
365 | backend::net::syscalls::acceptfrom(sockfd.as_fd()) | |
366 | } | |
367 | ||
368 | /// `accept4(fd, &addr, &len, flags)`—Accepts an incoming connection and | |
369 | /// returns the peer address, with flags. | |
370 | /// | |
371 | /// Use [`accept_with`] if the peer address isn't needed. | |
372 | /// | |
373 | /// `acceptfrom_with` is the same as [`acceptfrom`] but adds an additional | |
374 | /// flags operand. | |
375 | /// | |
376 | /// # References | |
377 | /// - [Linux] | |
378 | /// | |
379 | /// [Linux]: https://man7.org/linux/man-pages/man2/accept4.2.html | |
380 | #[inline] | |
381 | #[doc(alias = "accept4")] | |
382 | pub fn acceptfrom_with<Fd: AsFd>( | |
383 | sockfd: Fd, | |
384 | flags: AcceptFlags, | |
385 | ) -> io::Result<(OwnedFd, Option<SocketAddrAny>)> { | |
386 | backend::net::syscalls::acceptfrom_with(sockfd.as_fd(), flags) | |
387 | } | |
388 | ||
389 | /// `shutdown(fd, how)`—Closes the read and/or write sides of a stream. | |
390 | /// | |
391 | /// # References | |
392 | /// - [POSIX] | |
393 | /// - [Linux] | |
394 | /// - [Apple] | |
395 | /// - [Winsock2] | |
396 | /// | |
397 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/shutdown.html | |
398 | /// [Linux]: https://man7.org/linux/man-pages/man2/shutdown.2.html | |
399 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/shutdown.2.html | |
400 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-shutdown | |
401 | #[inline] | |
402 | pub fn shutdown<Fd: AsFd>(sockfd: Fd, how: Shutdown) -> io::Result<()> { | |
403 | backend::net::syscalls::shutdown(sockfd.as_fd(), how) | |
404 | } | |
405 | ||
406 | /// `getsockname(fd, addr, len)`—Returns the address a socket is bound to. | |
407 | /// | |
408 | /// # References | |
409 | /// - [POSIX] | |
410 | /// - [Linux] | |
411 | /// - [Apple] | |
412 | /// - [Winsock2] | |
413 | /// | |
414 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/getsockname.html | |
415 | /// [Linux]: https://man7.org/linux/man-pages/man2/getsockname.2.html | |
416 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/getsockname.2.html | |
417 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-getsockname | |
418 | #[inline] | |
419 | pub fn getsockname<Fd: AsFd>(sockfd: Fd) -> io::Result<SocketAddrAny> { | |
420 | backend::net::syscalls::getsockname(sockfd.as_fd()) | |
421 | } | |
422 | ||
423 | /// `getpeername(fd, addr, len)`—Returns the address a socket is connected | |
424 | /// to. | |
425 | /// | |
426 | /// # References | |
427 | /// - [POSIX] | |
428 | /// - [Linux] | |
429 | /// - [Apple] | |
430 | /// - [Winsock2] | |
431 | /// | |
432 | /// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/getpeername.html | |
433 | /// [Linux]: https://man7.org/linux/man-pages/man2/getpeername.2.html | |
434 | /// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/getpeername.2.html | |
435 | /// [Winsock2]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-getpeername | |
436 | #[inline] | |
437 | pub fn getpeername<Fd: AsFd>(sockfd: Fd) -> io::Result<Option<SocketAddrAny>> { | |
438 | backend::net::syscalls::getpeername(sockfd.as_fd()) | |
439 | } |