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StreamFlowCtrlInner

tor_proto::stream::flow_ctrl::state

Enum StreamFlowCtrlInner 

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enum StreamFlowCtrlInner {
    Window(WindowFlowCtrl),
    XonXoff(XonXoffFlowCtrl),
}
Expand description

Private internals of StreamFlowCtrl.

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Window(WindowFlowCtrl)

“legacy” sendme-window-based flow control.

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XonXoff(XonXoffFlowCtrl)

XON/XOFF flow control.

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impl Debug for StreamFlowCtrlInner

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

Formats the value using the given formatter. Read more
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impl FlowCtrlHooks for StreamFlowCtrlInner

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fn can_send<M: RelayMsg>(&self, __enum_dispatch_arg_0: &M) -> bool

Whether this stream is ready to send msg.

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fn about_to_send(&mut self, __enum_dispatch_arg_0: &AnyRelayMsg) -> Result<()>

Inform the flow control code that we’re about to send msg. Returns an error if the message should not be sent, and the circuit should be closed.

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fn put_for_incoming_sendme( &mut self, __enum_dispatch_arg_0: UnparsedRelayMsg, ) -> Result<()>

Handle an incoming sendme.

On success, return the number of cells left in the window.

On failure, return an error: the caller should close the stream or circuit with a protocol error.

Takes the UnparsedRelayMsg so that we don’t even try to decode it if we’re not using the correct type of flow control.

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fn handle_incoming_xon( &mut self, __enum_dispatch_arg_0: UnparsedRelayMsg, ) -> Result<()>

Handle an incoming XON message.

Takes the UnparsedRelayMsg so that we don’t even try to decode it if we’re not using the correct type of flow control.

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fn handle_incoming_xoff( &mut self, __enum_dispatch_arg_0: UnparsedRelayMsg, ) -> Result<()>

Handle an incoming XOFF message.

Takes the UnparsedRelayMsg so that we don’t even try to decode it if we’re not using the correct type of flow control.

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fn maybe_send_xon( &mut self, __enum_dispatch_arg_0: XonKbpsEwma, __enum_dispatch_arg_1: usize, ) -> Result<Option<Xon>>

Check if we should send an XON message.

If we should, then returns the XON message that should be sent. Returns an error if XON/XOFF messages aren’t supported for this type of flow control.

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fn maybe_send_xoff( &mut self, __enum_dispatch_arg_0: usize, ) -> Result<Option<Xoff>>

Check if we should send an XOFF message.

If we should, then returns the XOFF message that should be sent. Returns an error if XON/XOFF messages aren’t supported for this type of flow control.

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fn inbound_queue_max_len(&self) -> usize

The max queue length that should be used for stream messages incoming from the Tor network.

This is the queue length between the user-facing stream reader (DataReader) and the circuit reactor.

If the queue would ever exceed this many messages, the stream should be closed.

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impl From<WindowFlowCtrl> for StreamFlowCtrlInner

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fn from(v: WindowFlowCtrl) -> StreamFlowCtrlInner

Converts to this type from the input type.
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impl From<XonXoffFlowCtrl> for StreamFlowCtrlInner

Available on crate feature flowctl-cc only.
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fn from(v: XonXoffFlowCtrl) -> StreamFlowCtrlInner

Converts to this type from the input type.
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impl TryInto<WindowFlowCtrl> for StreamFlowCtrlInner

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type Error = &'static str

The type returned in the event of a conversion error.
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fn try_into( self, ) -> Result<WindowFlowCtrl, <Self as TryInto<WindowFlowCtrl>>::Error>

Performs the conversion.
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impl TryInto<XonXoffFlowCtrl> for StreamFlowCtrlInner

Available on crate feature flowctl-cc only.
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type Error = &'static str

The type returned in the event of a conversion error.
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fn try_into( self, ) -> Result<XonXoffFlowCtrl, <Self as TryInto<XonXoffFlowCtrl>>::Error>

Performs the conversion.

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