tor_proto::stream

Struct ClientDataStreamCtrl

Source 
pub struct ClientDataStreamCtrl {
    circuit: Weak<ClientCirc>,
    status: Arc<Mutex<DataStreamStatus>>,
    _memquota: StreamAccount,
}
Available on crate feature stream-ctrl only.
Expand description

An object used to control and monitor a data stream.

§Notes

This is a separate type from DataStream because it’s useful to have multiple references to this object, whereas a DataReader and DataWriter need to have a single owner for the AsyncRead and AsyncWrite APIs to work correctly.

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§circuit: Weak<ClientCirc>

The circuit to which this stream is attached.

Note that the stream’s reader and writer halves each contain a StreamTarget, which in turn has a strong reference to the ClientCirc. So as long as any one of those is alive, this reference will be present.

We make this a Weak reference so that once the stream itself is closed, we can’t leak circuits.

§status: Arc<Mutex<DataStreamStatus>>

Shared user-visible information about the state of this stream.

TODO RPC: This will probably want to be a postage::Watch or something similar, if and when it stops moving around.

§_memquota: StreamAccount

The memory quota account that should be used for this stream’s data

Exists to keep the account alive

Implementations§

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impl ClientDataStreamCtrl

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pub fn is_connected(&self) -> bool

Return true if the underlying stream is connected. (That is, if it has received a CONNECTED message, and has not been closed.)

Trait Implementations§

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impl ClientStreamCtrl for ClientDataStreamCtrl

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fn circuit(&self) -> Option<Arc<ClientCirc>>

Return the circuit that this stream is attached to, if that circuit object is still present. Read more
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impl Debug for ClientDataStreamCtrl

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

Formats the value using the given formatter. Read more

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