Struct GetBlockHeaders

pub struct GetBlockHeaders {
    pub start_block: HashOrNumber,
    pub limit: u64,
    pub skip: u32,
    pub direction: HeadersDirection,
}

A request for a peer to return block headers starting at the requested block. The peer must return at most limit headers. If the reverse field is true, the headers will be returned starting at start_block, traversing towards the genesis block. Otherwise, headers will be returned starting at start_block, traversing towards the latest block.

If the skip field is non-zero, the peer must skip that amount of headers in the direction specified by reverse.

Fields

start_block: HashOrNumber

The block number or hash that the peer should start returning headers from.

limit: u64

The maximum number of headers to return.

skip: u32

The number of blocks that the node should skip while traversing and returning headers. A skip value of zero denotes that the peer should return contiguous headers, starting from start_block and returning at most limit headers.

direction: HeadersDirection

The direction in which the headers should be returned in.

Trait Implementations

impl<'arbitrary> Arbitrary<'arbitrary> for GetBlockHeaders

fn arbitrary(u: &mut Unstructured<'arbitrary>) -> Result<GetBlockHeaders, Error>

Generate an arbitrary value of Self from the given unstructured data.

fn arbitrary_take_rest( u: Unstructured<'arbitrary>, ) -> Result<GetBlockHeaders, Error>

Generate an arbitrary value of Self from the entirety of the given unstructured data.

fn size_hint(depth: usize) -> (usize, Option<usize>)

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

fn try_size_hint( depth: usize, ) -> Result<(usize, Option<usize>), MaxRecursionReached>

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

impl Clone for GetBlockHeaders

fn clone(&self) -> GetBlockHeaders

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GetBlockHeaders

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

Formats the value using the given formatter.

impl Decodable for GetBlockHeaders

fn decode(b: &mut &[u8]) -> Result<GetBlockHeaders, Error>

Decodes the blob into the appropriate type. buf must be advanced past the decoded object.

impl<'de> Deserialize<'de> for GetBlockHeaders

fn deserialize<__D>( __deserializer: __D, ) -> Result<GetBlockHeaders, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Encodable for GetBlockHeaders

fn length(&self) -> usize

Returns the length of the encoding of this type in bytes.

fn encode(&self, out: &mut dyn BufMut)

Encodes the type into the out buffer.

impl Hash for GetBlockHeaders

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

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for GetBlockHeaders

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

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

impl Serialize for GetBlockHeaders

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for GetBlockHeaders

impl Eq for GetBlockHeaders

impl StructuralPartialEq for GetBlockHeaders

Layout

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: 56 bytes