reth_eth_wire::capability

Enum SharedCapability

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pub enum SharedCapability {
    Eth {
        version: EthVersion,
        offset: u8,
    },
    UnknownCapability {
        cap: Capability,
        offset: u8,
        messages: u8,
    },
}
Expand description

This represents a shared capability, its version, and its message id offset.

The offset is the message ID offset for this shared capability, determined during the rlpx handshake.

See also Message-id based multiplexing

Variants§

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Eth

The eth capability.

Fields

§version: EthVersion

(Highest) negotiated version of the eth capability.

§offset: u8

The message ID offset for this capability.

This represents the message ID offset for the first message of the eth capability in the message id space.

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UnknownCapability

Any other unknown capability.

Fields

§cap: Capability

Shared capability.

§offset: u8

The message ID offset for this capability.

This represents the message ID offset for the first message of the eth capability in the message id space.

§messages: u8

The number of messages of this capability. Needed to calculate range of message IDs in demuxing.

Implementations§

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impl SharedCapability

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pub const fn capability(&self) -> Cow<'_, Capability>

Returns the capability.

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pub fn name(&self) -> &str

Returns the name of the capability.

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pub const fn is_eth(&self) -> bool

Returns true if the capability is eth.

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pub const fn version(&self) -> u8

Returns the version of the capability.

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pub const fn eth_version(&self) -> Option<EthVersion>

Returns the eth version if it’s the eth capability.

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pub const fn message_id_offset(&self) -> u8

Returns the message ID offset of the current capability.

This represents the message ID offset for the first message of the eth capability in the message id space.

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pub const fn relative_message_id_offset(&self) -> u8

Returns the message ID offset of the current capability relative to the start of the reserved message id space: MAX_RESERVED_MESSAGE_ID.

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pub const fn num_messages(&self) -> u8

Returns the number of protocol messages supported by this capability.

Trait Implementations§

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impl Clone for SharedCapability

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fn clone(&self) -> SharedCapability

Returns a copy 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 SharedCapability

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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 Hash for SharedCapability

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for SharedCapability

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fn eq(&self, other: &SharedCapability) -> 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 Eq for SharedCapability

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impl StructuralPartialEq for SharedCapability

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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: 40 bytes

Size for each variant:

  • Eth: 10 bytes
  • UnknownCapability: 40 bytes