Struct std::net::UdpSocket1.0.0 [] [src]

pub struct UdpSocket(_);

A User Datagram Protocol socket.

This is an implementation of a bound UDP socket. This supports both IPv4 and IPv6 addresses, and there is no corresponding notion of a server because UDP is a datagram protocol.

Examples

use std::net::UdpSocket;

{
    let mut socket = try!(UdpSocket::bind("127.0.0.1:34254"));

    // read from the socket
    let mut buf = [0; 10];
    let (amt, src) = try!(socket.recv_from(&mut buf));

    // send a reply to the socket we received data from
    let buf = &mut buf[..amt];
    buf.reverse();
    try!(socket.send_to(buf, &src));
} // the socket is closed hereRun

Methods

impl UdpSocket
[src]

Creates a UDP socket from the given address.

The address type can be any implementor of ToSocketAddrs trait. See its documentation for concrete examples.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");Run

Receives data from the socket. On success, returns the number of bytes read and the address from whence the data came.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
let mut buf = [0; 10];
let (number_of_bytes, src_addr) = socket.recv_from(&mut buf)
                                        .expect("Didn't receive data");Run

Sends data on the socket to the given address. On success, returns the number of bytes written.

Address type can be any implementor of ToSocketAddrs trait. See its documentation for concrete examples.

This will return an error when the IP version of the local socket does not match that returned from ToSocketAddrs.

See https://github.com/rust-lang/rust/issues/34202 for more details.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.send_to(&[0; 10], "127.0.0.1:4242").expect("couldn't send data");Run

Returns the socket address that this socket was created from.

Examples

use std::net::{Ipv4Addr, SocketAddr, SocketAddrV4, UdpSocket};

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
assert_eq!(socket.local_addr().unwrap(),
           SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 34254)));Run

Creates a new independently owned handle to the underlying socket.

The returned UdpSocket is a reference to the same socket that this object references. Both handles will read and write the same port, and options set on one socket will be propagated to the other.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
let socket_clone = socket.try_clone().expect("couldn't clone the socket");Run

Sets the read timeout to the timeout specified.

If the value specified is None, then read() calls will block indefinitely. It is an error to pass the zero Duration to this method.

Note

Platforms may return a different error code whenever a read times out as a result of setting this option. For example Unix typically returns an error of the kind WouldBlock, but Windows may return TimedOut.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_read_timeout(None).expect("set_read_timeout call failed");Run

Sets the write timeout to the timeout specified.

If the value specified is None, then write() calls will block indefinitely. It is an error to pass the zero Duration to this method.

Note

Platforms may return a different error code whenever a write times out as a result of setting this option. For example Unix typically returns an error of the kind WouldBlock, but Windows may return TimedOut.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_write_timeout(None).expect("set_write_timeout call failed");Run

Returns the read timeout of this socket.

If the timeout is None, then read() calls will block indefinitely.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_read_timeout(None).expect("set_read_timeout call failed");
assert_eq!(socket.read_timeout().unwrap(), None);Run

Returns the write timeout of this socket.

If the timeout is None, then write() calls will block indefinitely.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_write_timeout(None).expect("set_write_timeout call failed");
assert_eq!(socket.write_timeout().unwrap(), None);Run

Sets the value of the SO_BROADCAST option for this socket.

When enabled, this socket is allowed to send packets to a broadcast address.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_broadcast(false).expect("set_broadcast call failed");Run

Gets the value of the SO_BROADCAST option for this socket.

For more information about this option, see set_broadcast.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_broadcast(false).expect("set_broadcast call failed");
assert_eq!(socket.broadcast().unwrap(), false);Run

Sets the value of the IP_MULTICAST_LOOP option for this socket.

If enabled, multicast packets will be looped back to the local socket. Note that this may not have any affect on IPv6 sockets.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_multicast_loop_v4(false).expect("set_multicast_loop_v4 call failed");Run

Gets the value of the IP_MULTICAST_LOOP option for this socket.

For more information about this option, see set_multicast_loop_v4.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_multicast_loop_v4(false).expect("set_multicast_loop_v4 call failed");
assert_eq!(socket.multicast_loop_v4().unwrap(), false);Run

Sets the value of the IP_MULTICAST_TTL option for this socket.

Indicates the time-to-live value of outgoing multicast packets for this socket. The default value is 1 which means that multicast packets don't leave the local network unless explicitly requested.

Note that this may not have any affect on IPv6 sockets.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_multicast_ttl_v4(42).expect("set_multicast_ttl_v4 call failed");Run

Gets the value of the IP_MULTICAST_TTL option for this socket.

For more information about this option, see set_multicast_ttl_v4.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_multicast_ttl_v4(42).expect("set_multicast_ttl_v4 call failed");
assert_eq!(socket.multicast_ttl_v4().unwrap(), 42);Run

Sets the value of the IPV6_MULTICAST_LOOP option for this socket.

Controls whether this socket sees the multicast packets it sends itself. Note that this may not have any affect on IPv4 sockets.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_multicast_loop_v6(false).expect("set_multicast_loop_v6 call failed");Run

Gets the value of the IPV6_MULTICAST_LOOP option for this socket.

For more information about this option, see set_multicast_loop_v6.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_multicast_loop_v6(false).expect("set_multicast_loop_v6 call failed");
assert_eq!(socket.multicast_loop_v6().unwrap(), false);Run

Sets the value for the IP_TTL option on this socket.

This value sets the time-to-live field that is used in every packet sent from this socket.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_ttl(42).expect("set_ttl call failed");Run

Gets the value of the IP_TTL option for this socket.

For more information about this option, see set_ttl.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_ttl(42).expect("set_ttl call failed");
assert_eq!(socket.ttl().unwrap(), 42);Run

Executes an operation of the IP_ADD_MEMBERSHIP type.

This function specifies a new multicast group for this socket to join. The address must be a valid multicast address, and interface is the address of the local interface with which the system should join the multicast group. If it's equal to INADDR_ANY then an appropriate interface is chosen by the system.

Executes an operation of the IPV6_ADD_MEMBERSHIP type.

This function specifies a new multicast group for this socket to join. The address must be a valid multicast address, and interface is the index of the interface to join/leave (or 0 to indicate any interface).

Executes an operation of the IP_DROP_MEMBERSHIP type.

For more information about this option, see join_multicast_v4.

Executes an operation of the IPV6_DROP_MEMBERSHIP type.

For more information about this option, see join_multicast_v6.

Get the value of the SO_ERROR option on this socket.

This will retrieve the stored error in the underlying socket, clearing the field in the process. This can be useful for checking errors between calls.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
match socket.take_error() {
    Ok(Some(error)) => println!("UdpSocket error: {:?}", error),
    Ok(None) => println!("No error"),
    Err(error) => println!("UdpSocket.take_error failed: {:?}", error),
}Run

Connects this UDP socket to a remote address, allowing the send and recv syscalls to be used to send data and also applies filters to only receive data from the specified address.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.connect("127.0.0.1:8080").expect("connect function failed");Run

Sends data on the socket to the remote address to which it is connected.

The connect() method will connect this socket to a remote address. This method will fail if the socket is not connected.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.connect("127.0.0.1:8080").expect("connect function failed");
socket.send(&[0, 1, 2]).expect("couldn't send message");Run

Receives data on the socket from the remote address to which it is connected.

The connect method will connect this socket to a remote address. This method will fail if the socket is not connected.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.connect("127.0.0.1:8080").expect("connect function failed");
let mut buf = [0; 10];
match socket.recv(&mut buf) {
    Ok(received) => println!("received {} bytes", received),
    Err(e) => println!("recv function failed: {:?}", e),
}Run

Moves this UDP socket into or out of nonblocking mode.

On Unix this corresponds to calling fcntl, and on Windows this corresponds to calling ioctlsocket.

Examples

use std::net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");
socket.set_nonblocking(true).expect("set_nonblocking call failed");Run

Trait Implementations

impl Debug for UdpSocket
[src]

Formats the value using the given formatter.