Struct Socket

pub struct Socket<'a> { /* private fields */ }

A Domain Name System socket.

A UDP socket is bound to a specific endpoint, and owns transmit and receive packet buffers.

Implementations

impl<'a> Socket<'a>

pub fn new<Q>(servers: &[Address], queries: Q) -> Socket<'a>

where Q: Into<ManagedSlice<'a, Option<DnsQuery>>>,

Create a DNS socket.

Truncates the server list if servers.len() > MAX_SERVER_COUNT

pub fn update_servers(&mut self, servers: &[Address])

Update the list of DNS servers, will replace all existing servers

Truncates the server list if servers.len() > MAX_SERVER_COUNT

pub fn hop_limit(&self) -> Option<u8>

Return the time-to-live (IPv4) or hop limit (IPv6) value used in outgoing packets.

See also the set_hop_limit method

pub fn set_hop_limit(&mut self, hop_limit: Option<u8>)

Set the time-to-live (IPv4) or hop limit (IPv6) value used in outgoing packets.

A socket without an explicitly set hop limit value uses the default IANA recommended value (64).

Panics

This function panics if a hop limit value of 0 is given. See RFC 1122 § 3.2.1.7.

pub fn start_query( &mut self, cx: &mut InterfaceInner, name: &str, query_type: Type, ) -> Result<QueryHandle, StartQueryError>

Start a query.

name is specified in human-friendly format, such as "rust-lang.org". It accepts names both with and without trailing dot, and they’re treated the same (there’s no support for DNS search path).

pub fn start_query_raw( &mut self, cx: &mut InterfaceInner, raw_name: &[u8], query_type: Type, mdns: MulticastDns, ) -> Result<QueryHandle, StartQueryError>

Start a query with a raw (wire-format) DNS name. b"\x09rust-lang\x03org\x00"

You probably want to use [start_query] instead.

pub fn get_query_result( &mut self, handle: QueryHandle, ) -> Result<Vec<Address, smoltcp::::socket::dns::{impl#3}::get_query_result::{constant#0}>, GetQueryResultError>

Get the result of a query.

If the query is completed, the query slot is automatically freed.

Panics

Panics if the QueryHandle corresponds to a free slot.

pub fn cancel_query(&mut self, handle: QueryHandle)

Cancels a query, freeing the slot.

Panics

Panics if the QueryHandle corresponds to an already free slot.

pub fn register_query_waker(&mut self, handle: QueryHandle, waker: &Waker)

Assign a waker to a query slot

The waker will be woken when the query completes, either successfully or failed.

Panics

Panics if the QueryHandle corresponds to an already free slot.

Trait Implementations

impl<'a> AnySocket<'a> for Socket<'a>

fn upcast(self) -> Socket<'a>

fn downcast<'c>(socket: &'c Socket<'a>) -> Option<&'c Socket<'a>>

fn downcast_mut<'c>(socket: &'c mut Socket<'a>) -> Option<&'c mut Socket<'a>>

impl<'a> Debug for Socket<'a>

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

Formats the value using the given formatter.