1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
13 use io::{self, Error, ErrorKind, Result};
15 use net::{SocketAddr, Ipv4Addr, Ipv6Addr};
17 use sys::fs::{File, OpenOptions};
18 use sys::syscall::TimeSpec;
19 use sys_common::{AsInner, FromInner, IntoInner};
22 use super::{path_to_peer_addr, path_to_local_addr};
25 pub struct UdpSocket(File, UnsafeCell<Option<SocketAddr>>);
28 pub fn bind(addr: Result<&SocketAddr>) -> Result<UdpSocket> {
29 let path = format!("udp:/{}", addr?);
30 let mut options = OpenOptions::new();
33 Ok(UdpSocket(File::open(Path::new(path.as_str()), &options)?, UnsafeCell::new(None)))
36 fn get_conn(&self) -> &mut Option<SocketAddr> {
37 unsafe { &mut *(self.1.get()) }
40 pub fn connect(&self, addr: Result<&SocketAddr>) -> Result<()> {
41 unsafe { *self.1.get() = Some(*addr?) };
45 pub fn duplicate(&self) -> Result<UdpSocket> {
46 let new_bind = self.0.dup(&[])?;
47 let new_conn = *self.get_conn();
48 Ok(UdpSocket(new_bind, UnsafeCell::new(new_conn)))
51 pub fn recv_from(&self, buf: &mut [u8]) -> Result<(usize, SocketAddr)> {
52 let from = self.0.dup(b"listen")?;
53 let path = from.path()?;
54 let peer_addr = path_to_peer_addr(path.to_str().unwrap_or(""));
55 let count = from.read(buf)?;
56 Ok((count, peer_addr))
59 pub fn recv(&self, buf: &mut [u8]) -> Result<usize> {
60 if let Some(addr) = *self.get_conn() {
61 let from = self.0.dup(addr.to_string().as_bytes())?;
64 Err(Error::new(ErrorKind::Other, "UdpSocket::recv not connected"))
68 pub fn send_to(&self, buf: &[u8], addr: &SocketAddr) -> Result<usize> {
69 let to = self.0.dup(format!("{}", addr).as_bytes())?;
73 pub fn send(&self, buf: &[u8]) -> Result<usize> {
74 if let Some(addr) = *self.get_conn() {
75 self.send_to(buf, &addr)
77 Err(Error::new(ErrorKind::Other, "UdpSocket::send not connected"))
81 pub fn take_error(&self) -> Result<Option<Error>> {
85 pub fn socket_addr(&self) -> Result<SocketAddr> {
86 let path = self.0.path()?;
87 Ok(path_to_local_addr(path.to_str().unwrap_or("")))
90 pub fn peek(&self, _buf: &mut [u8]) -> Result<usize> {
91 Err(Error::new(ErrorKind::Other, "UdpSocket::peek not implemented"))
94 pub fn peek_from(&self, _buf: &mut [u8]) -> Result<(usize, SocketAddr)> {
95 Err(Error::new(ErrorKind::Other, "UdpSocket::peek_from not implemented"))
98 pub fn broadcast(&self) -> Result<bool> {
99 Err(Error::new(ErrorKind::Other, "UdpSocket::broadcast not implemented"))
102 pub fn multicast_loop_v4(&self) -> Result<bool> {
103 Err(Error::new(ErrorKind::Other, "UdpSocket::multicast_loop_v4 not implemented"))
106 pub fn multicast_loop_v6(&self) -> Result<bool> {
107 Err(Error::new(ErrorKind::Other, "UdpSocket::multicast_loop_v6 not implemented"))
110 pub fn multicast_ttl_v4(&self) -> Result<u32> {
111 Err(Error::new(ErrorKind::Other, "UdpSocket::multicast_ttl_v4 not implemented"))
114 pub fn nonblocking(&self) -> Result<bool> {
115 self.0.fd().nonblocking()
118 pub fn only_v6(&self) -> Result<bool> {
119 Err(Error::new(ErrorKind::Other, "UdpSocket::only_v6 not implemented"))
122 pub fn ttl(&self) -> Result<u32> {
124 let file = self.0.dup(b"ttl")?;
125 file.read(&mut ttl)?;
129 pub fn read_timeout(&self) -> Result<Option<Duration>> {
130 let mut time = TimeSpec::default();
131 let file = self.0.dup(b"read_timeout")?;
132 if file.read(&mut time)? >= mem::size_of::<TimeSpec>() {
133 Ok(Some(Duration::new(time.tv_sec as u64, time.tv_nsec as u32)))
139 pub fn write_timeout(&self) -> Result<Option<Duration>> {
140 let mut time = TimeSpec::default();
141 let file = self.0.dup(b"write_timeout")?;
142 if file.read(&mut time)? >= mem::size_of::<TimeSpec>() {
143 Ok(Some(Duration::new(time.tv_sec as u64, time.tv_nsec as u32)))
149 pub fn set_broadcast(&self, _broadcast: bool) -> Result<()> {
150 Err(Error::new(ErrorKind::Other, "UdpSocket::set_broadcast not implemented"))
153 pub fn set_multicast_loop_v4(&self, _multicast_loop_v4: bool) -> Result<()> {
154 Err(Error::new(ErrorKind::Other, "UdpSocket::set_multicast_loop_v4 not implemented"))
157 pub fn set_multicast_loop_v6(&self, _multicast_loop_v6: bool) -> Result<()> {
158 Err(Error::new(ErrorKind::Other, "UdpSocket::set_multicast_loop_v6 not implemented"))
161 pub fn set_multicast_ttl_v4(&self, _multicast_ttl_v4: u32) -> Result<()> {
162 Err(Error::new(ErrorKind::Other, "UdpSocket::set_multicast_ttl_v4 not implemented"))
165 pub fn set_nonblocking(&self, nonblocking: bool) -> Result<()> {
166 self.0.fd().set_nonblocking(nonblocking)
169 pub fn set_only_v6(&self, _only_v6: bool) -> Result<()> {
170 Err(Error::new(ErrorKind::Other, "UdpSocket::set_only_v6 not implemented"))
173 pub fn set_ttl(&self, ttl: u32) -> Result<()> {
174 let file = self.0.dup(b"ttl")?;
175 file.write(&[cmp::min(ttl, 255) as u8])?;
179 pub fn set_read_timeout(&self, duration_option: Option<Duration>) -> Result<()> {
180 let file = self.0.dup(b"read_timeout")?;
181 if let Some(duration) = duration_option {
182 if duration.as_secs() == 0 && duration.subsec_nanos() == 0 {
183 return Err(io::Error::new(io::ErrorKind::InvalidInput,
184 "cannot set a 0 duration timeout"));
186 file.write(&TimeSpec {
187 tv_sec: duration.as_secs() as i64,
188 tv_nsec: duration.subsec_nanos() as i32
196 pub fn set_write_timeout(&self, duration_option: Option<Duration>) -> Result<()> {
197 let file = self.0.dup(b"write_timeout")?;
198 if let Some(duration) = duration_option {
199 if duration.as_secs() == 0 && duration.subsec_nanos() == 0 {
200 return Err(io::Error::new(io::ErrorKind::InvalidInput,
201 "cannot set a 0 duration timeout"));
203 file.write(&TimeSpec {
204 tv_sec: duration.as_secs() as i64,
205 tv_nsec: duration.subsec_nanos() as i32
213 pub fn join_multicast_v4(&self, _multiaddr: &Ipv4Addr, _interface: &Ipv4Addr) -> Result<()> {
214 Err(Error::new(ErrorKind::Other, "UdpSocket::join_multicast_v4 not implemented"))
217 pub fn join_multicast_v6(&self, _multiaddr: &Ipv6Addr, _interface: u32) -> Result<()> {
218 Err(Error::new(ErrorKind::Other, "UdpSocket::join_multicast_v6 not implemented"))
221 pub fn leave_multicast_v4(&self, _multiaddr: &Ipv4Addr, _interface: &Ipv4Addr) -> Result<()> {
222 Err(Error::new(ErrorKind::Other, "UdpSocket::leave_multicast_v4 not implemented"))
225 pub fn leave_multicast_v6(&self, _multiaddr: &Ipv6Addr, _interface: u32) -> Result<()> {
226 Err(Error::new(ErrorKind::Other, "UdpSocket::leave_multicast_v6 not implemented"))
230 impl AsInner<File> for UdpSocket {
231 fn as_inner(&self) -> &File { &self.0 }
234 impl FromInner<File> for UdpSocket {
235 fn from_inner(file: File) -> UdpSocket {
236 UdpSocket(file, UnsafeCell::new(None))
240 impl IntoInner<File> for UdpSocket {
241 fn into_inner(self) -> File { self.0 }