Struct UdpSocket

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pub struct UdpSocket { /* private fields */ }

Expand description

A UDP socket

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impl UdpSocket

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pub fn default_builder_for(local: &SocketAddr) -> Result<UdpBuilder, Error>

Create builder with default options, but doesn’t bind yet.

To create a UdpSocket from a builder go through the std::net::UdpSocket created by builder.bind(...)?.

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pub fn from_std( stream: UdpSocket, handle: LazyHandle, ) -> Result<UdpSocket, Error>

Wraps an already bound tcp stream

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pub fn from_mio( stream: UdpSocket, handle: LazyHandle, ) -> Result<UdpSocket, Error>

Wraps an already bound tcp stream

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pub fn bind_port(port: u16) -> Result<UdpSocket, Error>

Binds a new UDP socket to IPv6 [::] with V6_ONLY=false (i.e. also listen on IPv4) and the given port.

If the port is 0 the OS will select a random port.

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pub fn bind_ipv4_port(port: u16) -> Result<UdpSocket, Error>

Binds a new UDP socket to IPv4 0.0.0.0 and the given port.

If the port is 0 the OS will select a random port.

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pub fn bind(local: SocketAddr) -> Result<UdpSocket, Error>

Bind a new UDP socket to the specified address.

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pub fn bind_with( local: SocketAddr, handle: LazyHandle, ) -> Result<UdpSocket, Error>

Bind a new UDP socket to the specified address.

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

Returns the local socket address of this socket.

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pub fn try_clone(&self) -> Result<UdpSocket, Error>

Creates a new independently owned handle to the underlying socket.

The new listener isn’t registered to a reactor yet.

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pub fn try_clone_with(&self, handle: LazyHandle) -> Result<UdpSocket, Error>

Creates a new independently owned handle to the underlying socket.

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pub fn poll_recv_from( &mut self, cx: &mut Context<'_>, buf: &mut [u8], ) -> Poll<Result<(usize, SocketAddr), Error>>

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

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pub fn recv_from<'a>(&'a mut self, buf: &'a mut [u8]) -> UdpRecvFrom<'a> ⓘ

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

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pub fn poll_send_to( &mut self, cx: &mut Context<'_>, buf: &[u8], target: &SocketAddr, ) -> Poll<Result<usize, Error>>

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

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pub fn send_to<'a>( &'a mut self, buf: &'a [u8], target: &'a SocketAddr, ) -> UdpSendTo<'a> ⓘ

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

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

Sets the value of the SO_BROADCAST option for this socket.

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

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pub fn broadcast(&self) -> Result<bool, Error>

Gets the value of the SO_BROADCAST option for this socket.

For more information about this option, see set_broadcast.

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

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.

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pub fn multicast_loop_v4(&self) -> Result<bool, Error>

Gets the value of the IP_MULTICAST_LOOP option for this socket.

For more information about this option, see set_multicast_loop_v4.

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

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.

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pub fn multicast_ttl_v4(&self) -> Result<u32, Error>

Gets the value of the IP_MULTICAST_TTL option for this socket.

For more information about this option, see set_multicast_ttl_v4.

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

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.

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pub fn multicast_loop_v6(&self) -> Result<bool, Error>

Gets the value of the IPV6_MULTICAST_LOOP option for this socket.

For more information about this option, see set_multicast_loop_v6.

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

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.

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pub fn ttl(&self) -> Result<u32, Error>

Gets the value of the IP_TTL option for this socket.

For more information about this option, see set_ttl.

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

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.

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

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).

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

Executes an operation of the IP_DROP_MEMBERSHIP type.

For more information about this option, see join_multicast_v4.

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

Executes an operation of the IPV6_DROP_MEMBERSHIP type.

For more information about this option, see join_multicast_v6.

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pub fn take_error(&self) -> Result<Option<Error>, Error>

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.