ChannelUsage

tor_chanmgr

Enum ChannelUsage 

Source 
#[non_exhaustive]
pub enum ChannelUsage {
    Dir,
    UserTraffic,
    UselessCircuit,
}
Expand description

The usage that we have in mind when requesting a channel.

A channel may be used in multiple ways. Each time a channel is requested from ChanMgr a separate ChannelUsage is passed in to tell the ChanMgr how the channel will be used this time.

To be clear, the ChannelUsage is aspect of a request for a channel, and is not an immutable property of the channel itself.

This type is obtained from a tor_circmgr::usage::SupportedCircUsage in tor_circmgr::usage, and it has roughly the same set of variants.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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Dir

Requesting a channel to use for BEGINDIR-based non-anonymous directory connections.

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UserTraffic

Requesting a channel to transmit user traffic (including exit traffic) over the network.

This includes the case where we are constructing a circuit preemptively, and planning to use it for user traffic later on.

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UselessCircuit

Requesting a channel that the caller does not plan to used at all, or which it plans to use only for testing circuits.

Trait Implementations§

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impl Clone for ChannelUsage

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fn clone(&self) -> ChannelUsage

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 ChannelUsage

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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 PartialEq for ChannelUsage

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fn eq(&self, other: &ChannelUsage) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for ChannelUsage

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impl Eq for ChannelUsage

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impl StructuralPartialEq for ChannelUsage

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Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 1 byte

Size for each variant:

  • Dir: 0 bytes
  • UserTraffic: 0 bytes
  • UselessCircuit: 0 bytes