UnixStream in std::os::unix::net - Rust (original) (raw)

Struct UnixStream

1.10.0 · Source

pub struct UnixStream(/* private fields */);

Available on Unix only.

Expand description

A Unix stream socket.

§Examples

use std::os::unix:🥅: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(())
}

§`SIGPIPE`

Writes to the underlying socket in SOCK_STREAM mode are made with MSG_NOSIGNAL flag. This suppresses the emission of the SIGPIPE signal when writing to disconnected socket. In some cases getting a SIGPIPE would trigger process termination.

Source §

1.10.0 · Source

Connects to the socket named by path.

§Examples

use std::os::unix:🥅:UnixStream;

let socket = match UnixStream::connect("/tmp/sock") {
    Ok(sock) => sock,
    Err(e) => {
        println!("Couldn't connect: {e:?}");
        return
    }
};

1.70.0 · Source

Connects to the socket specified by address.

§Examples

use std::os::unix:🥅:{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(())
}

1.10.0 · Source

Creates an unnamed pair of connected sockets.

Returns two UnixStreams which are connected to each other.

§Examples

use std::os::unix:🥅:UnixStream;

let (sock1, sock2) = match UnixStream::pair() {
    Ok((sock1, sock2)) => (sock1, sock2),
    Err(e) => {
        println!("Couldn't create a pair of sockets: {e:?}");
        return
    }
};

1.10.0 · Source

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:🥅:UnixStream;

fn main() -> std::io::Result<()> {
    let socket = UnixStream::connect("/tmp/sock")?;
    let sock_copy = socket.try_clone().expect("Couldn't clone socket");
    Ok(())
}

1.10.0 · Source

Returns the socket address of the local half of this connection.

§Examples

use std::os::unix:🥅:UnixStream;

fn main() -> std::io::Result<()> {
    let socket = UnixStream::connect("/tmp/sock")?;
    let addr = socket.local_addr().expect("Couldn't get local address");
    Ok(())
}

1.10.0 · Source

Returns the socket address of the remote half of this connection.

§Examples

use std::os::unix:🥅:UnixStream;

fn main() -> std::io::Result<()> {
    let socket = UnixStream::connect("/tmp/sock")?;
    let addr = socket.peer_addr().expect("Couldn't get peer address");
    Ok(())
}

Source

🔬This is a nightly-only experimental API. (peer_credentials_unix_socket #42839)

Available on Android or Linux or DragonFly BSD or FreeBSD or NetBSD or OpenBSD or target_os=nto or Apple or Cygwin only.

Gets the peer credentials for this Unix domain socket.

§Examples

#![feature(peer_credentials_unix_socket)]
use std::os::unix:🥅: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(())
}

1.10.0 · Source

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:🥅: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(())
}

An Err is returned if the zero Duration is passed to this method:

use std::io;
use std::os::unix:🥅: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(())
}

1.10.0 · Source

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:🥅: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(())
}

An Err is returned if the zero Duration is passed to this method:

use std::io;
use std::os::unix:🥅:UnixStream;
use std::time::Duration;

fn main() -> std::io::Result<()> {
    let socket = UnixStream::connect("/tmp/sock")?;
    let result = socket.set_write_timeout(Some(Duration::new(0, 0)));
    let err = result.unwrap_err();
    assert_eq!(err.kind(), io::ErrorKind::InvalidInput);
    Ok(())
}

1.10.0 · Source

Returns the read timeout of this socket.

§Examples

use std::os::unix:🥅: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(())
}

1.10.0 · Source

Returns the write timeout of this socket.

§Examples

use std::os::unix:🥅: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(())
}

1.10.0 · Source

Moves the socket into or out of nonblocking mode.

§Examples

use std::os::unix:🥅:UnixStream;

fn main() -> std::io::Result<()> {
    let socket = UnixStream::connect("/tmp/sock")?;
    socket.set_nonblocking(true).expect("Couldn't set nonblocking");
    Ok(())
}

Source

🔬This is a nightly-only experimental API. (unix_set_mark #96467)

Available on Linux or FreeBSD or OpenBSD only.

Set the id of the socket for network filtering purpose

#![feature(unix_set_mark)]
use std::os::unix:🥅:UnixStream;

fn main() -> std::io::Result<()> {
    let sock = UnixStream::connect("/tmp/sock")?;
    sock.set_mark(32)?;
    Ok(())
}

1.10.0 · Source

Returns the value of the SO_ERROR option.

§Examples

use std::os::unix:🥅: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(())
}

§Platform specific

On Redox this always returns None.

1.10.0 · Source

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:🥅:UnixStream;
use std:🥅:Shutdown;

fn main() -> std::io::Result<()> {
    let socket = UnixStream::connect("/tmp/sock")?;
    socket.shutdown(Shutdown::Both).expect("shutdown function failed");
    Ok(())
}

Source

🔬This is a nightly-only experimental API. (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 passingMSG_PEEK as a flag to the underlying recv system call.

§Examples

#![feature(unix_socket_peek)]

use std::os::unix:🥅: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(())
}

Source

🔬This is a nightly-only experimental API. (unix_socket_ancillary_data #76915)

Available on Android or Linux or Cygwin only.

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:🥅:{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(())
}

Source

🔬This is a nightly-only experimental API. (unix_socket_ancillary_data #76915)

Available on Android or Linux or Cygwin only.

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:🥅:{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(())
}

1.63.0 · Source §

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Available on Unix or HermitCore or target_os=trusty or WASI or target_os=motor only.

Borrows the file descriptor. Read more

1.10.0 · Source §

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Available on Unix or HermitCore or target_os=trusty or WASI or target_os=motor only.

Extracts the raw file descriptor. Read more

1.10.0 · Source §

1.63.0 · Source §

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Converts to this type from the input type.