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LES Part 1 (#3322)

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* stub implementations of light client trait

* Light provider trait

* light client sync stubs

* LES boilerplate

* stub implementation of provider for client

* skeleton and request traits

* request definitions

* new_list -> begin_list

* handle unknown packet

* revise light implementation strategy

* make verification module public

* Move all light client work to own crate

* experiment with answering requests

* buffer flow scaffolding

* remove LESv2 requests

* buffer flow basics, implement cost table

* begin status module

* implement handshake parsing and creation

* implement announcement serialization

* errors, punishment, and handshake

* handle announcements

* making announcements, clean up warnings

* allow dead code temporarily
This commit is contained in:
Robert Habermeier
2016-11-10 18:30:17 +01:00
committed by Gav Wood
parent 529633e9b2
commit 3854b8a689
18 changed files with 1821 additions and 11 deletions
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2
ethcore/src/lib.rs
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@@ -137,6 +137,7 @@ pub mod miner;
pub mod snapshot;
pub mod action_params;
pub mod db;
pub mod verification;
#[macro_use] pub mod evm;
mod cache_manager;
@@ -150,7 +151,6 @@ mod account_db;
mod builtin;
mod executive;
mod externalities;
mod verification;
mod blockchain;
mod types;
mod factory;

2
ethcore/src/types/mod.rs.in
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@@ -33,4 +33,4 @@ pub mod transaction_import;
pub mod block_import_error;
pub mod restoration_status;
pub mod snapshot_manifest;
pub mod mode;
pub mod mode;

3
ethcore/src/verification/canon_verifier.rs
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@@ -14,6 +14,8 @@
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
//! Canonical verifier.
use blockchain::BlockProvider;
use engines::Engine;
use error::Error;
@@ -21,6 +23,7 @@ use header::Header;
use super::Verifier;
use super::verification;
/// A canonial verifier -- this does full verification.
pub struct CanonVerifier;
impl Verifier for CanonVerifier {

3
ethcore/src/verification/mod.rs
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@@ -14,6 +14,8 @@
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
//! Block verification utilities.
pub mod verification;
pub mod verifier;
pub mod queue;
@@ -44,6 +46,7 @@ impl Default for VerifierType {
}
}
/// Create a new verifier based on type.
pub fn new(v: VerifierType) -> Box<Verifier> {
match v {
VerifierType::Canon | VerifierType::CanonNoSeal => Box::new(CanonVerifier),

3
ethcore/src/verification/noop_verifier.rs
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@@ -14,12 +14,15 @@
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
//! No-op verifier.
use blockchain::BlockProvider;
use engines::Engine;
use error::Error;
use header::Header;
use super::Verifier;
/// A no-op verifier -- this will verify everything it's given immediately.
#[allow(dead_code)]
pub struct NoopVerifier;

12
ethcore/src/verification/verification.rs
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@@ -14,12 +14,12 @@
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
/// Block and transaction verification functions
///
/// Block verification is done in 3 steps
/// 1. Quick verification upon adding to the block queue
/// 2. Signatures verification done in the queue.
/// 3. Final verification against the blockchain done before enactment.
//! Block and transaction verification functions
//!
//! Block verification is done in 3 steps
//! 1. Quick verification upon adding to the block queue
//! 2. Signatures verification done in the queue.
//! 3. Final verification against the blockchain done before enactment.
use util::*;
use engines::Engine;

4
ethcore/src/verification/verifier.rs
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@@ -14,6 +14,8 @@
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
//! A generic verifier trait.
use blockchain::BlockProvider;
use engines::Engine;
use error::Error;
@@ -21,6 +23,8 @@ use header::Header;
/// Should be used to verify blocks.
pub trait Verifier: Send + Sync {
/// Verify a block relative to its parent and uncles.
fn verify_block_family(&self, header: &Header, bytes: &[u8], engine: &Engine, bc: &BlockProvider) -> Result<(), Error>;
/// Do a final verification check for an enacted header vs its expected counterpart.
fn verify_block_final(&self, expected: &Header, got: &Header) -> Result<(), Error>;
}