tor_proto::tunnel::circuit

Struct HopSettings

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pub(super) struct HopSettings {
    pub(super) ccontrol: CongestionControlParams,
}
Expand description

The settings we use for single hop of a circuit.

Unlike CircParameters, this type is crate-internal. We construct it based on our settings from the circuit, and from the hop’s actual capabilities. Then, we negotiate with the hop as part of circuit creation/extension to determine the actual settings that will be in use. Finally, we use those settings to construct the negotiated circuit hop.

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§ccontrol: CongestionControlParams

The negotiated congestion control settings for this circuit.

Implementations§

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impl HopSettings

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pub(super) fn from_params_and_caps( params: &CircParameters, caps: &Protocols, ) -> Result<Self>

Construct a new HopSettings based on params (a set of circuit parameters) and caps (a set of protocol capabilities for a circuit target).

The resulting settings will represent what the client would prefer to negotiate (determined by params), as modified by what the target relay is believed to support (represented by caps).

This represents the HopSettings in a pre-negotiation state: the circuit negotiation process will modify it.

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pub(super) fn without_negotiation(self) -> Self

Return a new HopSettings based on this one, representing the settings that we should use if circuit negotiation will be impossible.

(Circuit negotiation is impossible when using the legacy ntor protocol, and when using CRATE_FAST. It is currently unsupported with virtual hops.)

Trait Implementations§

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impl Clone for HopSettings

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fn clone(&self) -> HopSettings

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for HopSettings

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

Formats the value using the given formatter. Read more

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