Struct Reverse Headers Downloader Builder &nbsp; Copy item path

impl ReverseHeadersDownloaderBuilder

pub fn new(config: HeadersConfig) -> Self

Creates a new ReverseHeadersDownloaderBuilder with configurations based on the provided [HeadersConfig].

impl ReverseHeadersDownloaderBuilder

pub const fn request_limit(self, limit: u64) -> Self

Set the request batch size.

This determines the limit for a GetBlockHeaders requests, the number of headers we ask for.

pub const fn stream_batch_size(self, size: usize) -> Self

Set the stream batch size

This determines the number of headers the ReverseHeadersDownloader will yield on Stream::next. This will be the amount of headers the headers stage will commit at a time.

pub const fn min_concurrent_requests( self, min_concurrent_requests: usize, ) -> Self

Set the min amount of concurrent requests.

If there’s capacity the ReverseHeadersDownloader will keep at least this many requests active at a time.

pub const fn max_concurrent_requests( self, max_concurrent_requests: usize, ) -> Self

Set the max amount of concurrent requests.

The downloader’s concurrent requests won’t exceed the given amount.

pub const fn max_buffered_responses(self, max_buffered_responses: usize) -> Self

How many responses to buffer internally.

This essentially determines how much memory the downloader can use for buffering responses that arrive out of order. The total number of buffered headers is request_limit * max_buffered_responses. If the ReverseHeadersDownloader’s buffered responses exceeds this threshold it waits until there’s capacity again before sending new requests.

pub fn build<H>( self, client: H, consensus: Arc<dyn HeaderValidator<H::Header>>, ) -> ReverseHeadersDownloader<H>
where H: HeadersClient + 'static,

Build ReverseHeadersDownloader with provided consensus and header client implementations

Trait Implementations§

impl Debug for ReverseHeadersDownloaderBuilder

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

Formats the value using the given formatter. Read more

impl Default for ReverseHeadersDownloaderBuilder

fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

impl UnwindSafe for ReverseHeadersDownloaderBuilder

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