Trait trust_dns_proto::xfer::DnsRequestSender

pub trait DnsRequestSender: Stream<Item = Result<(), ProtoError>> + 'static + Display + Send + Unpin {
    type DnsResponseFuture: Future<Output = Result<DnsResponse, ProtoError>> + 'static + Send + Unpin;
    fn send_message(
        &mut self, 
        message: DnsRequest, 
        cx: &mut Context
    ) -> Self::DnsResponseFuture;
    fn error_response(error: ProtoError) -> Self::DnsResponseFuture;
    fn shutdown(&mut self);
    fn is_shutdown(&self) -> bool;
}

Types that implement this are capable of sending a serialized DNS message on a stream

The underlying Stream implementation should yield Some(()) whenever it is ready to send a message, NotReady, if it is not ready to send a message, and Err or None in the case that the stream is done, and should be shutdown.

Associated Types

type DnsResponseFuture: Future<Output = Result<DnsResponse, ProtoError>> + 'static + Send + Unpin

A future that resolves to a response serial message

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Required methods

fn send_message(
    &mut self,
    message: DnsRequest,
    cx: &mut Context
) -> Self::DnsResponseFuture

Send a message, and return a future of the response

Return

A future which will resolve to a SerialMessage response

fn error_response(error: ProtoError) -> Self::DnsResponseFuture

Constructs an error response

fn shutdown(&mut self)

Allows the upstream user to inform the underling stream that it should shutdown.

After this is called, the next time poll is called on the stream it would be correct to return Poll::Ready(Ok(())). This is not required though, if there are say outstanding requests that are not yet complete, then it would be correct to first wait for those results.

fn is_shutdown(&self) -> bool

Returns true if the stream has been shutdown with shutdown

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Implementors

impl<S, MF> DnsRequestSender for DnsMultiplexer<S, MF> where
    S: DnsClientStream + Unpin + 'static,
    MF: MessageFinalizer + Send + Sync + 'static, 

type DnsResponseFuture = DnsMultiplexerSerialResponse

fn send_message(
    &mut self,
    request: DnsRequest,
    cx: &mut Context
) -> Self::DnsResponseFuture

fn error_response(error: ProtoError) -> Self::DnsResponseFuture

fn shutdown(&mut self)

fn is_shutdown(&self) -> bool

impl<S: UdpSocket + Send + 'static, MF: MessageFinalizer> DnsRequestSender for UdpClientStream<S, MF>

type DnsResponseFuture = UdpResponse

fn send_message(
    &mut self,
    message: DnsRequest,
    _cx: &mut Context
) -> Self::DnsResponseFuture

fn error_response(err: ProtoError) -> Self::DnsResponseFuture

fn shutdown(&mut self)

fn is_shutdown(&self) -> bool

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