9ed43230ca
* Light client on-demand request for headers range. * Cache headers in HeaderWithAncestors response. Also fulfills request locally if all headers are in cache. * LightFetch::logs fetches missing headers on demand. * LightFetch::logs limit the number of headers requested at a time. * LightFetch::logs refactor header fetching logic. * Enforce limit on header range length in light client logs request. * Fix light request tests after struct change. * Respond to review comments.
92 lines
2.8 KiB
Rust
92 lines
2.8 KiB
Rust
// Copyright 2015-2018 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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//! Light client logic and implementation.
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//!
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//! A "light" client stores very little chain-related data locally
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//! unlike a full node, which stores all blocks, headers, receipts, and more.
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//!
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//! This enables the client to have a much lower resource footprint in
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//! exchange for the cost of having to ask the network for state data
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//! while responding to queries. This makes a light client unsuitable for
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//! low-latency applications, but perfectly suitable for simple everyday
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//! use-cases like sending transactions from a personal account.
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//!
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//! The light client performs a header-only sync, doing verification and pruning
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//! historical blocks. Upon pruning, batches of 2048 blocks have a number => (hash, TD)
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//! mapping sealed into "canonical hash tries" which can later be used to verify
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//! historical block queries from peers.
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#![deny(missing_docs)]
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pub mod client;
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pub mod cht;
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pub mod net;
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pub mod on_demand;
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pub mod transaction_queue;
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pub mod cache;
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pub mod provider;
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mod types;
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pub use self::cache::Cache;
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pub use self::provider::{Provider, MAX_HEADERS_PER_REQUEST};
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pub use self::transaction_queue::TransactionQueue;
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pub use types::request as request;
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#[macro_use]
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extern crate serde_derive;
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#[macro_use]
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extern crate log;
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extern crate bincode;
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extern crate ethcore_io as io;
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extern crate ethcore_network as network;
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extern crate parity_bytes as bytes;
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extern crate ethcore_transaction as transaction;
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extern crate ethereum_types;
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extern crate ethcore;
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extern crate hashdb;
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extern crate heapsize;
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extern crate futures;
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extern crate itertools;
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extern crate keccak_hasher;
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extern crate memorydb;
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extern crate patricia_trie as trie;
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extern crate patricia_trie_ethereum as ethtrie;
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extern crate fastmap;
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extern crate rand;
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extern crate rlp;
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extern crate parking_lot;
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#[macro_use]
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extern crate rlp_derive;
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extern crate serde;
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extern crate smallvec;
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extern crate stats;
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extern crate vm;
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extern crate keccak_hash as hash;
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extern crate triehash_ethereum as triehash;
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extern crate kvdb;
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extern crate memory_cache;
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#[macro_use]
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extern crate error_chain;
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#[cfg(test)]
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extern crate kvdb_memorydb;
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#[cfg(test)]
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extern crate tempdir;
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