pub struct UnixStream(/* private fields */);
Expand description
A Unix stream socket.
§Examples
use std::os::unix::net::UnixStream;
use std::io::prelude::*;
fn main() -> std::io::Result<()> {
let mut stream = UnixStream::connect("/path/to/my/socket")?;
stream.write_all(b"hello world")?;
let mut response = String::new();
stream.read_to_string(&mut response)?;
println!("{response}");
Ok(())
}
RunImplementations§
source§impl UnixStream
impl UnixStream
1.70.0 · sourcepub fn connect_addr(socket_addr: &SocketAddr) -> Result<UnixStream>
pub fn connect_addr(socket_addr: &SocketAddr) -> Result<UnixStream>
Connects to the socket specified by address
.
§Examples
use std::os::unix::net::{UnixListener, UnixStream};
fn main() -> std::io::Result<()> {
let listener = UnixListener::bind("/path/to/the/socket")?;
let addr = listener.local_addr()?;
let sock = match UnixStream::connect_addr(&addr) {
Ok(sock) => sock,
Err(e) => {
println!("Couldn't connect: {e:?}");
return Err(e)
}
};
Ok(())
}
Runsourcepub fn pair() -> Result<(UnixStream, UnixStream)>
pub fn pair() -> Result<(UnixStream, UnixStream)>
Creates an unnamed pair of connected sockets.
Returns two UnixStream
s which are connected to each other.
§Examples
use std::os::unix::net::UnixStream;
let (sock1, sock2) = match UnixStream::pair() {
Ok((sock1, sock2)) => (sock1, sock2),
Err(e) => {
println!("Couldn't create a pair of sockets: {e:?}");
return
}
};
Runsourcepub fn try_clone(&self) -> Result<UnixStream>
pub fn try_clone(&self) -> Result<UnixStream>
Creates a new independently owned handle to the underlying socket.
The returned UnixStream
is a reference to the same stream that this
object references. Both handles will read and write the same stream of
data, and options set on one stream will be propagated to the other
stream.
§Examples
use std::os::unix::net::UnixStream;
fn main() -> std::io::Result<()> {
let socket = UnixStream::connect("/tmp/sock")?;
let sock_copy = socket.try_clone().expect("Couldn't clone socket");
Ok(())
}
Runsourcepub fn local_addr(&self) -> Result<SocketAddr>
pub fn local_addr(&self) -> Result<SocketAddr>
sourcepub fn peer_addr(&self) -> Result<SocketAddr>
pub fn peer_addr(&self) -> Result<SocketAddr>
sourcepub fn peer_cred(&self) -> Result<UCred>
🔬This is a nightly-only experimental API. (peer_credentials_unix_socket
#42839)
pub fn peer_cred(&self) -> Result<UCred>
peer_credentials_unix_socket
#42839)Gets the peer credentials for this Unix domain socket.
§Examples
#![feature(peer_credentials_unix_socket)]
use std::os::unix::net::UnixStream;
fn main() -> std::io::Result<()> {
let socket = UnixStream::connect("/tmp/sock")?;
let peer_cred = socket.peer_cred().expect("Couldn't get peer credentials");
Ok(())
}
Runsourcepub fn set_read_timeout(&self, timeout: Option<Duration>) -> Result<()>
pub fn set_read_timeout(&self, timeout: Option<Duration>) -> Result<()>
Sets the read timeout for the socket.
If the provided value is None
, then read
calls will block
indefinitely. An Err
is returned if the zero Duration
is passed to this
method.
§Examples
use std::os::unix::net::UnixStream;
use std::time::Duration;
fn main() -> std::io::Result<()> {
let socket = UnixStream::connect("/tmp/sock")?;
socket.set_read_timeout(Some(Duration::new(1, 0))).expect("Couldn't set read timeout");
Ok(())
}
RunAn Err
is returned if the zero Duration
is passed to this
method:
use std::io;
use std::os::unix::net::UnixStream;
use std::time::Duration;
fn main() -> std::io::Result<()> {
let socket = UnixStream::connect("/tmp/sock")?;
let result = socket.set_read_timeout(Some(Duration::new(0, 0)));
let err = result.unwrap_err();
assert_eq!(err.kind(), io::ErrorKind::InvalidInput);
Ok(())
}
Runsourcepub fn set_write_timeout(&self, timeout: Option<Duration>) -> Result<()>
pub fn set_write_timeout(&self, timeout: Option<Duration>) -> Result<()>
Sets the write timeout for the socket.
If the provided value is None
, then write
calls will block
indefinitely. An Err
is returned if the zero Duration
is
passed to this method.
§Examples
use std::os::unix::net::UnixStream;
use std::time::Duration;
fn main() -> std::io::Result<()> {
let socket = UnixStream::connect("/tmp/sock")?;
socket.set_write_timeout(Some(Duration::new(1, 0)))
.expect("Couldn't set write timeout");
Ok(())
}
RunAn Err
is returned if the zero Duration
is passed to this
method:
use std::io;
use std::net::UdpSocket;
use std::time::Duration;
fn main() -> std::io::Result<()> {
let socket = UdpSocket::bind("127.0.0.1:34254")?;
let result = socket.set_write_timeout(Some(Duration::new(0, 0)));
let err = result.unwrap_err();
assert_eq!(err.kind(), io::ErrorKind::InvalidInput);
Ok(())
}
Runsourcepub fn read_timeout(&self) -> Result<Option<Duration>>
pub fn read_timeout(&self) -> Result<Option<Duration>>
Returns the read timeout of this socket.
§Examples
use std::os::unix::net::UnixStream;
use std::time::Duration;
fn main() -> std::io::Result<()> {
let socket = UnixStream::connect("/tmp/sock")?;
socket.set_read_timeout(Some(Duration::new(1, 0))).expect("Couldn't set read timeout");
assert_eq!(socket.read_timeout()?, Some(Duration::new(1, 0)));
Ok(())
}
Runsourcepub fn write_timeout(&self) -> Result<Option<Duration>>
pub fn write_timeout(&self) -> Result<Option<Duration>>
Returns the write timeout of this socket.
§Examples
use std::os::unix::net::UnixStream;
use std::time::Duration;
fn main() -> std::io::Result<()> {
let socket = UnixStream::connect("/tmp/sock")?;
socket.set_write_timeout(Some(Duration::new(1, 0)))
.expect("Couldn't set write timeout");
assert_eq!(socket.write_timeout()?, Some(Duration::new(1, 0)));
Ok(())
}
Runsourcepub fn set_nonblocking(&self, nonblocking: bool) -> Result<()>
pub fn set_nonblocking(&self, nonblocking: bool) -> Result<()>
sourcepub fn set_passcred(&self, passcred: bool) -> Result<()>
🔬This is a nightly-only experimental API. (unix_socket_ancillary_data
#76915)
pub fn set_passcred(&self, passcred: bool) -> Result<()>
unix_socket_ancillary_data
#76915)Moves the socket to pass unix credentials as control message in SocketAncillary
.
Set the socket option SO_PASSCRED
.
§Examples
#![feature(unix_socket_ancillary_data)]
use std::os::unix::net::UnixStream;
fn main() -> std::io::Result<()> {
let socket = UnixStream::connect("/tmp/sock")?;
socket.set_passcred(true).expect("Couldn't set passcred");
Ok(())
}
Runsourcepub fn passcred(&self) -> Result<bool>
🔬This is a nightly-only experimental API. (unix_socket_ancillary_data
#76915)
pub fn passcred(&self) -> Result<bool>
unix_socket_ancillary_data
#76915)Get the current value of the socket for passing unix credentials in SocketAncillary
.
This value can be change by set_passcred
.
Get the socket option SO_PASSCRED
.
sourcepub fn set_mark(&self, mark: u32) -> Result<()>
🔬This is a nightly-only experimental API. (unix_set_mark
#96467)
pub fn set_mark(&self, mark: u32) -> Result<()>
unix_set_mark
#96467)Set the id of the socket for network filtering purpose
#![feature(unix_set_mark)]
use std::os::unix::net::UnixStream;
fn main() -> std::io::Result<()> {
let sock = UnixStream::connect("/tmp/sock")?;
sock.set_mark(32)?;
Ok(())
}
Runsourcepub fn take_error(&self) -> Result<Option<Error>>
pub fn take_error(&self) -> Result<Option<Error>>
Returns the value of the SO_ERROR
option.
§Examples
use std::os::unix::net::UnixStream;
fn main() -> std::io::Result<()> {
let socket = UnixStream::connect("/tmp/sock")?;
if let Ok(Some(err)) = socket.take_error() {
println!("Got error: {err:?}");
}
Ok(())
}
Run§Platform specific
On Redox this always returns None
.
sourcepub fn shutdown(&self, how: Shutdown) -> Result<()>
pub fn shutdown(&self, how: Shutdown) -> Result<()>
Shuts down the read, write, or both halves of this connection.
This function will cause all pending and future I/O calls on the
specified portions to immediately return with an appropriate value
(see the documentation of Shutdown
).
§Examples
use std::os::unix::net::UnixStream;
use std::net::Shutdown;
fn main() -> std::io::Result<()> {
let socket = UnixStream::connect("/tmp/sock")?;
socket.shutdown(Shutdown::Both).expect("shutdown function failed");
Ok(())
}
Runsourcepub fn peek(&self, buf: &mut [u8]) -> Result<usize>
🔬This is a nightly-only experimental API. (unix_socket_peek
#76923)
pub fn peek(&self, buf: &mut [u8]) -> Result<usize>
unix_socket_peek
#76923)Receives data on the socket from the remote address to which it is connected, without removing that data from the queue. On success, returns the number of bytes peeked.
Successive calls return the same data. This is accomplished by passing
MSG_PEEK
as a flag to the underlying recv
system call.
§Examples
#![feature(unix_socket_peek)]
use std::os::unix::net::UnixStream;
fn main() -> std::io::Result<()> {
let socket = UnixStream::connect("/tmp/sock")?;
let mut buf = [0; 10];
let len = socket.peek(&mut buf).expect("peek failed");
Ok(())
}
Runsourcepub fn recv_vectored_with_ancillary(
&self,
bufs: &mut [IoSliceMut<'_>],
ancillary: &mut SocketAncillary<'_>
) -> Result<usize>
🔬This is a nightly-only experimental API. (unix_socket_ancillary_data
#76915)
pub fn recv_vectored_with_ancillary( &self, bufs: &mut [IoSliceMut<'_>], ancillary: &mut SocketAncillary<'_> ) -> Result<usize>
unix_socket_ancillary_data
#76915)Receives data and ancillary data from socket.
On success, returns the number of bytes read.
§Examples
#![feature(unix_socket_ancillary_data)]
use std::os::unix::net::{UnixStream, SocketAncillary, AncillaryData};
use std::io::IoSliceMut;
fn main() -> std::io::Result<()> {
let socket = UnixStream::connect("/tmp/sock")?;
let mut buf1 = [1; 8];
let mut buf2 = [2; 16];
let mut buf3 = [3; 8];
let mut bufs = &mut [
IoSliceMut::new(&mut buf1),
IoSliceMut::new(&mut buf2),
IoSliceMut::new(&mut buf3),
][..];
let mut fds = [0; 8];
let mut ancillary_buffer = [0; 128];
let mut ancillary = SocketAncillary::new(&mut ancillary_buffer[..]);
let size = socket.recv_vectored_with_ancillary(bufs, &mut ancillary)?;
println!("received {size}");
for ancillary_result in ancillary.messages() {
if let AncillaryData::ScmRights(scm_rights) = ancillary_result.unwrap() {
for fd in scm_rights {
println!("receive file descriptor: {fd}");
}
}
}
Ok(())
}
Runsourcepub fn send_vectored_with_ancillary(
&self,
bufs: &[IoSlice<'_>],
ancillary: &mut SocketAncillary<'_>
) -> Result<usize>
🔬This is a nightly-only experimental API. (unix_socket_ancillary_data
#76915)
pub fn send_vectored_with_ancillary( &self, bufs: &[IoSlice<'_>], ancillary: &mut SocketAncillary<'_> ) -> Result<usize>
unix_socket_ancillary_data
#76915)Sends data and ancillary data on the socket.
On success, returns the number of bytes written.
§Examples
#![feature(unix_socket_ancillary_data)]
use std::os::unix::net::{UnixStream, SocketAncillary};
use std::io::IoSlice;
fn main() -> std::io::Result<()> {
let socket = UnixStream::connect("/tmp/sock")?;
let buf1 = [1; 8];
let buf2 = [2; 16];
let buf3 = [3; 8];
let bufs = &[
IoSlice::new(&buf1),
IoSlice::new(&buf2),
IoSlice::new(&buf3),
][..];
let fds = [0, 1, 2];
let mut ancillary_buffer = [0; 128];
let mut ancillary = SocketAncillary::new(&mut ancillary_buffer[..]);
ancillary.add_fds(&fds[..]);
socket.send_vectored_with_ancillary(bufs, &mut ancillary)
.expect("send_vectored_with_ancillary function failed");
Ok(())
}
RunTrait Implementations§
1.63.0 · source§impl AsFd for UnixStream
impl AsFd for UnixStream
source§fn as_fd(&self) -> BorrowedFd<'_>
fn as_fd(&self) -> BorrowedFd<'_>
source§impl AsRawFd for UnixStream
impl AsRawFd for UnixStream
source§impl Debug for UnixStream
impl Debug for UnixStream
1.63.0 · source§impl From<OwnedFd> for UnixStream
impl From<OwnedFd> for UnixStream
1.63.0 · source§impl From<UnixStream> for OwnedFd
impl From<UnixStream> for OwnedFd
source§fn from(unix_stream: UnixStream) -> OwnedFd
fn from(unix_stream: UnixStream) -> OwnedFd
source§impl FromRawFd for UnixStream
impl FromRawFd for UnixStream
source§unsafe fn from_raw_fd(fd: RawFd) -> UnixStream ⓘ
unsafe fn from_raw_fd(fd: RawFd) -> UnixStream ⓘ
Self
from the given raw file
descriptor. Read moresource§impl IntoRawFd for UnixStream
impl IntoRawFd for UnixStream
source§fn into_raw_fd(self) -> RawFd
fn into_raw_fd(self) -> RawFd
source§impl<'a> Read for &'a UnixStream
impl<'a> Read for &'a UnixStream
source§fn read(&mut self, buf: &mut [u8]) -> Result<usize>
fn read(&mut self, buf: &mut [u8]) -> Result<usize>
source§fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize>
fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize>
read
, except that it reads into a slice of buffers. Read moresource§fn is_read_vectored(&self) -> bool
fn is_read_vectored(&self) -> bool
can_vector
#69941)1.0.0 · source§fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize>
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize>
buf
. Read more1.0.0 · source§fn read_to_string(&mut self, buf: &mut String) -> Result<usize>
fn read_to_string(&mut self, buf: &mut String) -> Result<usize>
buf
. Read more1.6.0 · source§fn read_exact(&mut self, buf: &mut [u8]) -> Result<()>
fn read_exact(&mut self, buf: &mut [u8]) -> Result<()>
buf
. Read moresource§fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> Result<()>
fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> Result<()>
read_buf
#78485)source§fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> Result<()>
fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> Result<()>
read_buf
#78485)cursor
. Read more1.0.0 · source§fn by_ref(&mut self) -> &mut Selfwhere
Self: Sized,
fn by_ref(&mut self) -> &mut Selfwhere
Self: Sized,
Read
. Read moresource§impl Read for UnixStream
impl Read for UnixStream
source§fn read(&mut self, buf: &mut [u8]) -> Result<usize>
fn read(&mut self, buf: &mut [u8]) -> Result<usize>
source§fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize>
fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize>
read
, except that it reads into a slice of buffers. Read moresource§fn is_read_vectored(&self) -> bool
fn is_read_vectored(&self) -> bool
can_vector
#69941)1.0.0 · source§fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize>
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize>
buf
. Read more1.0.0 · source§fn read_to_string(&mut self, buf: &mut String) -> Result<usize>
fn read_to_string(&mut self, buf: &mut String) -> Result<usize>
buf
. Read more1.6.0 · source§fn read_exact(&mut self, buf: &mut [u8]) -> Result<()>
fn read_exact(&mut self, buf: &mut [u8]) -> Result<()>
buf
. Read moresource§fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> Result<()>
fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> Result<()>
read_buf
#78485)source§fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> Result<()>
fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> Result<()>
read_buf
#78485)cursor
. Read more1.0.0 · source§fn by_ref(&mut self) -> &mut Selfwhere
Self: Sized,
fn by_ref(&mut self) -> &mut Selfwhere
Self: Sized,
Read
. Read moresource§impl<'a> Write for &'a UnixStream
impl<'a> Write for &'a UnixStream
source§fn write(&mut self, buf: &[u8]) -> Result<usize>
fn write(&mut self, buf: &[u8]) -> Result<usize>
source§fn is_write_vectored(&self) -> bool
fn is_write_vectored(&self) -> bool
can_vector
#69941)source§fn flush(&mut self) -> Result<()>
fn flush(&mut self) -> Result<()>
1.0.0 · source§fn write_all(&mut self, buf: &[u8]) -> Result<()>
fn write_all(&mut self, buf: &[u8]) -> Result<()>
source§fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<()>
fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<()>
write_all_vectored
#70436)source§impl Write for UnixStream
impl Write for UnixStream
source§fn write(&mut self, buf: &[u8]) -> Result<usize>
fn write(&mut self, buf: &[u8]) -> Result<usize>
source§fn is_write_vectored(&self) -> bool
fn is_write_vectored(&self) -> bool
can_vector
#69941)source§fn flush(&mut self) -> Result<()>
fn flush(&mut self) -> Result<()>
1.0.0 · source§fn write_all(&mut self, buf: &[u8]) -> Result<()>
fn write_all(&mut self, buf: &[u8]) -> Result<()>
source§fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<()>
fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<()>
write_all_vectored
#70436)