Struct tokio_core::net::UdpSocket

pub struct UdpSocket {
    // some fields omitted
}

An I/O object representing a UDP socket.

Methods

impl UdpSocket

fn bind(addr: &SocketAddr, handle: &Handle) -> Result<UdpSocket>

Create a new UDP socket bound to the specified address.

This function will create a new UDP socket and attempt to bind it to the addr provided. The returned future will be resolved once the socket has successfully bound. If an error happens during the binding or during the socket creation, that error will be returned to the future instead.

fn from_socket(socket: UdpSocket, handle: &Handle) -> Result<UdpSocket>

Creates a new UdpSocket from the previously bound socket provided.

The socket given will be registered with the event loop that handle is associated with. This function requires that socket has previously been bound to an address to work correctly.

This can be used in conjunction with net2's UdpBuilder interface to configure a socket before it's handed off, such as setting options like reuse_address or binding to multiple addresses.

fn local_addr(&self) -> Result<SocketAddr>

Returns the local address that this stream is bound to.

fn poll_read(&self) -> Async<()>

Test whether this socket is ready to be read or not.

If the socket is not readable then the current task is scheduled to get a notification when the socket does become readable. That is, this is only suitable for calling in a Future::poll method and will automatically handle ensuring a retry once the socket is readable again.

fn poll_write(&self) -> Async<()>

Test whether this socket is writey to be written to or not.

If the socket is not writable then the current task is scheduled to get a notification when the socket does become writable. That is, this is only suitable for calling in a Future::poll method and will automatically handle ensuring a retry once the socket is writable again.

fn send_to(&self, buf: &[u8], target: &SocketAddr) -> Result<usize>

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.

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

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

fn broadcast(&self) -> Result<bool>

Gets the value of the SO_BROADCAST option for this socket.

For more information about this option, see set_broadcast.

fn set_broadcast(&self, on: bool) -> Result<()>

Sets the value of the SO_BROADCAST option for this socket.

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

fn multicast_loop_v4(&self) -> Result<bool>

Gets the value of the IP_MULTICAST_LOOP option for this socket.

For more information about this option, see set_multicast_loop_v4.

fn set_multicast_loop_v4(&self, on: bool) -> Result<()>

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.

fn multicast_ttl_v4(&self) -> Result<u32>

Gets the value of the IP_MULTICAST_TTL option for this socket.

For more information about this option, see set_multicast_ttl_v4.

fn set_multicast_ttl_v4(&self, ttl: u32) -> Result<()>

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.

fn multicast_loop_v6(&self) -> Result<bool>

Gets the value of the IPV6_MULTICAST_LOOP option for this socket.

For more information about this option, see set_multicast_loop_v6.

fn set_multicast_loop_v6(&self, on: bool) -> Result<()>

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.

fn ttl(&self) -> Result<u32>

Gets the value of the IP_TTL option for this socket.

For more information about this option, see set_ttl.

fn set_ttl(&self, ttl: u32) -> Result<()>

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.

fn join_multicast_v4(&self, multiaddr: &Ipv4Addr, interface: &Ipv4Addr) -> Result<()>

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.

fn join_multicast_v6(&self, multiaddr: &Ipv6Addr, interface: u32) -> Result<()>

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).

fn leave_multicast_v4(&self, multiaddr: &Ipv4Addr, interface: &Ipv4Addr) -> Result<()>

Executes an operation of the IP_DROP_MEMBERSHIP type.

For more information about this option, see join_multicast_v4.

fn leave_multicast_v6(&self, multiaddr: &Ipv6Addr, interface: u32) -> Result<()>

Executes an operation of the IPV6_DROP_MEMBERSHIP type.

For more information about this option, see join_multicast_v6.

Trait Implementations

impl AsRawFd for UdpSocket

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl Debug for UdpSocket

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.