Module bip158 

BIP158 Compact Block Filters for Light Clients

Implements a structure for compact filters on block data, for use in the BIP 157 light client protocol. The filter construction proposed is an alternative to Bloom filters, as used in BIP 37, that minimizes filter size by using Golomb-Rice coding for compression.

USE : // create a block filter for a block (server side)

fn get_script_for_coin (coin: &OutPoint) -> Result<Script, BlockFilterError> { // get utxo … }

let filter = BlockFilter::new_script_filter (&block, get_script_for_coin)?;

// or create a filter from known raw data let filter = BlockFilter::new(content);

// read and evaluate a filter

let query: Iterator<Item=Script> = // .. some scripts you care about if filter.match_any (&block_hash, &mut query.map(|s| s.as_bytes())) { // get this block }

Structs

BitStreamReader

Bitwise stream reader

BitStreamWriter

Bitwise stream writer

BlockFilter

a computed or read block filter

BlockFilterReader

Reads and interpret a block filter

BlockFilterWriter

Compiles and writes a block filter

GCSFilterReader

Golomb-Rice encoded filter reader

GCSFilterWriter

Colomb-Rice encoded filter writer

Enums

Error

Errors for blockfilter