Struct smol::net::unix::UnixDatagram

pub struct UnixDatagram { /* private fields */ }

A Unix datagram socket.

After creating a UnixDatagram by binding it to a path, data can be sent to and received from any other socket address.

Cloning a UnixDatagram creates another handle to the same socket. The socket will be closed when all handles to it are dropped. The reading and writing portions of the socket can also be shut down individually with the shutdown() method.

Examples

use async_net::unix::UnixDatagram;

let socket = UnixDatagram::bind("/tmp/socket1")?;
socket.send_to(b"hello", "/tmp/socket2").await?;

let mut buf = vec![0u8; 1024];
let (n, addr) = socket.recv_from(&mut buf).await?;

Implementations

impl UnixDatagram

pub fn bind<P>(path: P) -> Result<UnixDatagram, Error>

where P: AsRef<Path>,

Creates a new UnixDatagram bound to the given address.

Examples

use async_net::unix::UnixDatagram;

let socket = UnixDatagram::bind("/tmp/socket")?;

pub fn unbound() -> Result<UnixDatagram, Error>

Creates a Unix datagram socket not bound to any address.

Examples

use async_net::unix::UnixDatagram;

let socket = UnixDatagram::unbound()?;

pub fn pair() -> Result<(UnixDatagram, UnixDatagram), Error>

Creates a pair of connected Unix datagram sockets.

Examples

use async_net::unix::UnixDatagram;

let (socket1, socket2) = UnixDatagram::pair()?;

pub fn connect<P>(&self, path: P) -> Result<(), Error>

where P: AsRef<Path>,

Connects the Unix datagram socket to the given address.

When connected, methods send() and recv() will use the specified address for sending and receiving messages. Additionally, a filter will be applied to recv_from() so that it only receives messages from that same address.

Examples

use async_net::unix::UnixDatagram;

let socket = UnixDatagram::unbound()?;
socket.connect("/tmp/socket")?;

pub fn local_addr(&self) -> Result<SocketAddr, Error>

Returns the local address this socket is bound to.

Examples

use async_net::unix::UnixDatagram;

let socket = UnixDatagram::bind("/tmp/socket")?;
println!("Bound to {:?}", socket.local_addr()?);

pub fn peer_addr(&self) -> Result<SocketAddr, Error>

Returns the remote address this socket is connected to.

Examples

use async_net::unix::UnixDatagram;

let socket = UnixDatagram::unbound()?;
socket.connect("/tmp/socket")?;
println!("Connected to {:?}", socket.peer_addr()?);

pub async fn recv_from( &self, buf: &mut [u8] ) -> Result<(usize, SocketAddr), Error>

Receives data from an address.

On success, returns the number of bytes received and the address data came from.

Examples

use async_net::unix::UnixDatagram;

let socket = UnixDatagram::bind("/tmp/socket")?;

let mut buf = vec![0; 1024];
let (n, addr) = socket.recv_from(&mut buf).await?;
println!("Received {} bytes from {:?}", n, addr);

pub async fn send_to<P>(&self, buf: &[u8], path: P) -> Result<usize, Error>

where P: AsRef<Path>,

Sends data to the given address.

On success, returns the number of bytes sent.

Examples

use async_net::unix::UnixDatagram;

let socket = UnixDatagram::unbound()?;
socket.send_to(b"hello", "/tmp/socket").await?;

pub async fn recv(&self, buf: &mut [u8]) -> Result<usize, Error>

Receives data from the connected address.

On success, returns the number of bytes received.

Examples

use async_net::unix::UnixDatagram;

let socket = UnixDatagram::unbound()?;
socket.connect("/tmp/socket")?;

let mut buf = vec![0; 1024];
let n = socket.recv(&mut buf).await?;

pub async fn send(&self, buf: &[u8]) -> Result<usize, Error>

Sends data to the connected address.

On success, returns the number of bytes sent.

Examples

use async_net::unix::UnixDatagram;

let socket = UnixDatagram::unbound()?;
socket.connect("/tmp/socket")?;
socket.send(b"hello").await?;

pub fn shutdown(&self, how: Shutdown) -> Result<(), Error>

Shuts down the read half, write half, or both halves of this socket.

This method will cause all pending and future I/O in the given directions to return immediately with an appropriate value (see the documentation of Shutdown).

Examples

use async_net::{Shutdown, unix::UnixDatagram};

let socket = UnixDatagram::unbound()?;
socket.shutdown(Shutdown::Both)?;

Trait Implementations

impl AsRawFd for UnixDatagram

fn as_raw_fd(&self) -> i32

Extracts the raw file descriptor.

impl Clone for UnixDatagram

fn clone(&self) -> UnixDatagram

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for UnixDatagram

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl From<Async<UnixDatagram>> for UnixDatagram

fn from(socket: Async<UnixDatagram>) -> UnixDatagram

Converts to this type from the input type.

impl TryFrom<UnixDatagram> for UnixDatagram

type Error = Error

The type returned in the event of a conversion error.

fn try_from(socket: UnixDatagram) -> Result<UnixDatagram, Error>

Performs the conversion.