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Showing content from https://doc.rust-lang.org/std/os/unix/net/struct.UnixStream.html below:

UnixStream in std::os::unix::net - Rust

pub struct UnixStream();

A Unix stream socket.

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(())
}

Connects to the socket named by path.

use std::os::unix::net::UnixStream;

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

Connects to the socket specified by address.

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(())
}

Creates an unnamed pair of connected sockets.

Returns two UnixStreams which are connected to each other.

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
    }
};

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.

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(())
}

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

use std::os::unix::net::UnixStream;

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

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

use std::os::unix::net::UnixStream;

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

Gets the peer credentials for this Unix domain socket.

#![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(())
}

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.

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(())
}

An 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(())
}

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.

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(())
}

An 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_write_timeout(Some(Duration::new(0, 0)));
    let err = result.unwrap_err();
    assert_eq!(err.kind(), io::ErrorKind::InvalidInput);
    Ok(())
}

Returns the read timeout of this socket.

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(())
}

Returns the write timeout of this socket.

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(())
}

Moves the socket into or out of nonblocking mode.

use std::os::unix::net::UnixStream;

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

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(())
}

Returns the value of the SO_ERROR option.

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(())
}

On Redox this always returns None.

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).

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(())
}

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.

#![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(())
}

Receives data and ancillary data from socket.

On success, returns the number of bytes read.

#![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(())
}

Sends data and ancillary data on the socket.

On success, returns the number of bytes written.

#![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(())
}

Converts to this type from the input type.

Constructs a new instance of

from the given raw file descriptor.

Consumes this object, returning the raw underlying file descriptor.

Pull some bytes from this source into the specified buffer, returning how many bytes were read.

Pull some bytes from this source into the specified buffer.

Like

, except that it reads into a slice of buffers.

Determines if this

er has an efficient

implementation.

Reads all bytes until EOF in this source, placing them into

.

Reads all bytes until EOF in this source, appending them to

.

Reads the exact number of bytes required to fill

.

Reads the exact number of bytes required to fill

.

Creates a “by reference” adaptor for this instance of

.

Creates an adapter which will chain this stream with another.

Creates an adapter which will read at most

bytes from it.

Pull some bytes from this source into the specified buffer, returning how many bytes were read.

Pull some bytes from this source into the specified buffer.

Like

, except that it reads into a slice of buffers.

Determines if this

er has an efficient

implementation.

Reads all bytes until EOF in this source, placing them into

.

Reads all bytes until EOF in this source, appending them to

.

Reads the exact number of bytes required to fill

.

Reads the exact number of bytes required to fill

.

Creates a “by reference” adaptor for this instance of

.

Creates an adapter which will chain this stream with another.

Creates an adapter which will read at most

bytes from it.

Query the current setting of socket option SO_PASSCRED.

Enable or disable socket option

.

Writes a buffer into this writer, returning how many bytes were written.

Flushes this output stream, ensuring that all intermediately buffered contents reach their destination.

Attempts to write an entire buffer into this writer.

Attempts to write multiple buffers into this writer.

Writes a formatted string into this writer, returning any error encountered.

Creates a “by reference” adapter for this instance of

.

Writes a buffer into this writer, returning how many bytes were written.

Flushes this output stream, ensuring that all intermediately buffered contents reach their destination.

Attempts to write an entire buffer into this writer.

Attempts to write multiple buffers into this writer.

Writes a formatted string into this writer, returning any error encountered.

Creates a “by reference” adapter for this instance of

.

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