Struct Client

pub struct Client { /* private fields */ }

A DNS Client implemented over futures-rs.

This Client is generic and capable of wrapping UDP, TCP, and other underlying DNS protocol implementations.

Implementations

impl Client

pub async fn new<F, S>( stream: F, stream_handle: BufDnsStreamHandle, signer: Option<Arc<dyn MessageFinalizer>>, ) -> Result<(Self, DnsExchangeBackground<DnsMultiplexer<S>, TokioTime>), ProtoError>

where F: Future<Output = Result<S, ProtoError>> + Send + Unpin + 'static, S: DnsClientStream + 'static + Unpin,

Spawns a new Client Stream. This uses a default timeout of 5 seconds for all requests.

Arguments

• stream - A stream of bytes that can be used to send/receive DNS messages (see TcpClientStream or UdpClientStream)
• stream_handle - The handle for the stream on which bytes can be sent/received.
• signer - An optional signer for requests, needed for Updates with Sig0, otherwise not needed

pub async fn with_timeout<F, S>( stream: F, stream_handle: BufDnsStreamHandle, timeout_duration: Duration, signer: Option<Arc<dyn MessageFinalizer>>, ) -> Result<(Self, DnsExchangeBackground<DnsMultiplexer<S>, TokioTime>), ProtoError>

where F: Future<Output = Result<S, ProtoError>> + 'static + Send + Unpin, S: DnsClientStream + 'static + Unpin,

Spawns a new Client Stream.

Arguments

• stream - A stream of bytes that can be used to send/receive DNS messages (see TcpClientStream or UdpClientStream)
• stream_handle - The handle for the stream on which bytes can be sent/received.
• timeout_duration - All requests may fail due to lack of response, this is the time to wait for a response before canceling the request.
• signer - An optional signer for requests, needed for Updates with Sig0, otherwise not needed

pub async fn connect<F, S>( connect_future: F, ) -> Result<(Self, DnsExchangeBackground<S, TokioTime>), ProtoError>

where S: DnsRequestSender, F: Future<Output = Result<S, ProtoError>> + 'static + Send + Unpin,

Returns a future, which itself wraps a future which is awaiting connection.

The connect_future should be lazy.

Returns

This returns a tuple of Self a handle to send dns messages and an optional background. The background task must be run on an executor before handle is used, if it is Some. If it is None, then another thread has already run the background.

pub fn enable_edns(&mut self)

(Re-)enable usage of EDNS for outgoing messages

pub fn disable_edns(&mut self)

Disable usage of EDNS for outgoing messages

Trait Implementations

impl Clone for Client

fn clone(&self) -> Client

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl DnsHandle for Client

type Response = DnsExchangeSend

The associated response from the response stream, this should resolve to the Response messages

fn send<R: Into<DnsRequest> + Unpin + Send + 'static>( &self, request: R, ) -> Self::Response

Send a message via the channel in the client

fn is_using_edns(&self) -> bool

Allow for disabling EDNS

fn is_verifying_dnssec(&self) -> bool

Only returns true if and only if this DNS handle is validating DNSSEC.

fn lookup(&self, query: Query, options: DnsRequestOptions) -> Self::Response

A classic DNS query