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making announcements, clean up warnings

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This commit is contained in:
Robert Habermeier 2016-11-09 18:05:00 +01:00
parent c132775bb1
commit 25d5efac15
5 changed files with 173 additions and 61 deletions
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5
ethcore/light/src/client.rs
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@ -21,11 +21,10 @@ use std::sync::Arc;
use ethcore::engines::Engine;
use ethcore::ids::BlockID;
use ethcore::miner::TransactionQueue;
use ethcore::service::ClientIoMessage;
use ethcore::block_import_error::BlockImportError;
use ethcore::block_status::BlockStatus;
use ethcore::verification::queue::{Config as QueueConfig, HeaderQueue, QueueInfo, Status};
use ethcore::verification::queue::{HeaderQueue, QueueInfo};
use ethcore::transaction::SignedTransaction;
use ethcore::blockchain_info::BlockChainInfo;
@ -62,7 +61,7 @@ impl Client {
}
/// Inquire about the status of a given block.
pub fn status(&self, id: BlockID) -> BlockStatus {
pub fn status(&self, _id: BlockID) -> BlockStatus {
BlockStatus::Unknown
}

32
ethcore/light/src/net/buffer_flow.rs
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@ -23,8 +23,9 @@
//! This module provides an interface for configuration of buffer
//! flow costs and recharge rates.
use request::{self, Request};
use request;
use super::packet;
use super::error::Error;
use rlp::*;
use util::U256;
@ -34,10 +35,6 @@ use time::{Duration, SteadyTime};
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Cost(pub U256, pub U256);
/// An error: insufficient buffer.
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct InsufficientBuffer;
/// Buffer value.
///
/// Produced and recharged using `FlowParams`.
@ -50,6 +47,9 @@ pub struct Buffer {
}
impl Buffer {
/// Get the current buffer value.
pub fn current(&self) -> U256 { self.estimate.clone() }
/// Make a definitive update.
/// This will be the value obtained after receiving
/// a response to a request.
@ -59,12 +59,14 @@ impl Buffer {
}
/// Attempt to apply the given cost to the buffer.
///
/// If successful, the cost will be deducted successfully.
///
/// If unsuccessful, the structure will be unaltered an an
/// error will be produced.
pub fn deduct_cost(&mut self, cost: U256) -> Result<(), InsufficientBuffer> {
pub fn deduct_cost(&mut self, cost: U256) -> Result<(), Error> {
match cost > self.estimate {
true => Err(InsufficientBuffer),
true => Err(Error::BufferEmpty),
false => {
self.estimate = self.estimate - cost;
Ok(())
@ -188,23 +190,9 @@ impl FlowParams {
/// Get a reference to the recharge rate.
pub fn recharge_rate(&self) -> &U256 { &self.recharge }
/// Estimate the maximum cost of the request.
pub fn max_cost(&self, req: &Request) -> U256 {
let amount = match *req {
Request::Headers(ref req) => req.max as usize,
Request::Bodies(ref req) => req.block_hashes.len(),
Request::Receipts(ref req) => req.block_hashes.len(),
Request::StateProofs(ref req) => req.requests.len(),
Request::Codes(ref req) => req.code_requests.len(),
Request::HeaderProofs(ref req) => req.requests.len(),
};
self.actual_cost(req.kind(), amount)
}
/// Compute the actual cost of a request, given the kind of request
/// and number of requests made.
pub fn actual_cost(&self, kind: request::Kind, amount: usize) -> U256 {
pub fn compute_cost(&self, kind: request::Kind, amount: usize) -> U256 {
let cost = match kind {
request::Kind::Headers => &self.costs.headers,
request::Kind::Bodies => &self.costs.bodies,

186
ethcore/light/src/net/mod.rs
View File

@ -20,13 +20,13 @@
//! See https://github.com/ethcore/parity/wiki/Light-Ethereum-Subprotocol-(LES)
use io::TimerToken;
use network::{NetworkProtocolHandler, NetworkService, NetworkContext, NetworkError, PeerId};
use rlp::{DecoderError, RlpStream, Stream, UntrustedRlp, View};
use network::{NetworkProtocolHandler, NetworkContext, NetworkError, PeerId};
use rlp::{RlpStream, Stream, UntrustedRlp, View};
use util::hash::H256;
use util::{U256, Mutex, RwLock};
use util::RwLock;
use std::collections::{HashMap, HashSet};
use std::sync::atomic::{AtomicUsize, Ordering};
use std::sync::atomic::AtomicUsize;
use provider::Provider;
use request::{self, Request};
@ -39,6 +39,8 @@ mod buffer_flow;
mod error;
mod status;
pub use self::status::Announcement;
const TIMEOUT: TimerToken = 0;
const TIMEOUT_INTERVAL_MS: u64 = 1000;
@ -120,11 +122,38 @@ pub struct LightProtocol {
}
impl LightProtocol {
// Check on the status of all pending requests.
fn check_pending_requests(&self) {
unimplemented!()
/// Make an announcement of new chain head and capabilities to all peers.
/// The announcement is expected to be valid.
pub fn make_announcement(&self, mut announcement: Announcement, io: &NetworkContext) {
let mut reorgs_map = HashMap::new();
// calculate reorg info and send packets
for (peer_id, peer_info) in self.peers.write().iter_mut() {
let reorg_depth = reorgs_map.entry(peer_info.sent_head)
.or_insert_with(|| {
match self.provider.reorg_depth(&announcement.head_hash, &peer_info.sent_head) {
Some(depth) => depth,
None => {
// both values will always originate locally -- this means something
// has gone really wrong
debug!(target: "les", "couldn't compute reorganization depth between {:?} and {:?}",
&announcement.head_hash, &peer_info.sent_head);
0
}
}
});
peer_info.sent_head = announcement.head_hash;
announcement.reorg_depth = *reorg_depth;
if let Err(e) = io.send(*peer_id, packet::ANNOUNCE, status::write_announcement(&announcement)) {
debug!(target: "les", "Error sending to peer {}: {}", peer_id, e);
}
}
}
}
impl LightProtocol {
// called when a peer connects.
fn on_connect(&self, peer: &PeerId, io: &NetworkContext) {
let peer = *peer;
@ -141,7 +170,7 @@ impl LightProtocol {
}
// called when a peer disconnects.
fn on_disconnect(&self, peer: PeerId, io: &NetworkContext) {
fn on_disconnect(&self, peer: PeerId) {
// TODO: reassign all requests assigned to this peer.
self.pending_peers.write().remove(&peer);
self.peers.write().remove(&peer);
@ -174,7 +203,7 @@ impl LightProtocol {
}
// Handle status message from peer.
fn status(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
fn status(&self, peer: &PeerId, data: UntrustedRlp) -> Result<(), Error> {
let pending = match self.pending_peers.write().remove(peer) {
Some(pending) => pending,
None => {
@ -204,7 +233,7 @@ impl LightProtocol {
}
// Handle an announcement.
fn announcement(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
fn announcement(&self, peer: &PeerId, data: UntrustedRlp) -> Result<(), Error> {
if !self.peers.read().contains_key(peer) {
debug!(target: "les", "Ignoring announcement from unknown peer");
return Ok(())
@ -245,70 +274,161 @@ impl LightProtocol {
// Handle a request for block headers.
fn get_block_headers(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
const MAX_HEADERS: u64 = 512;
const MAX_HEADERS: usize = 512;
unimplemented!()
let mut present_buffer = match self.peers.read().get(peer) {
Some(peer) => peer.local_buffer.clone(),
None => {
debug!(target: "les", "Ignoring announcement from unknown peer");
return Ok(())
}
};
self.flow_params.recharge(&mut present_buffer);
let req_id: u64 = try!(data.val_at(0));
let req = request::Headers {
block: {
let rlp = try!(data.at(1));
(try!(rlp.val_at(0)), try!(rlp.val_at(1)))
},
max: ::std::cmp::min(MAX_HEADERS, try!(data.val_at(2))),
skip: try!(data.val_at(3)),
reverse: try!(data.val_at(4)),
};
let max_cost = self.flow_params.compute_cost(request::Kind::Headers, req.max);
try!(present_buffer.deduct_cost(max_cost));
let response = self.provider.block_headers(req);
let actual_cost = self.flow_params.compute_cost(request::Kind::Headers, response.len());
let cur_buffer = match self.peers.write().get_mut(peer) {
Some(peer) => {
self.flow_params.recharge(&mut peer.local_buffer);
try!(peer.local_buffer.deduct_cost(actual_cost));
peer.local_buffer.current()
}
None => {
debug!(target: "les", "peer disconnected during serving of request.");
return Ok(())
}
};
io.respond(packet::BLOCK_HEADERS, {
let mut stream = RlpStream::new_list(response.len() + 2);
stream.append(&req_id).append(&cur_buffer);
for header in response {
stream.append_raw(&header, 1);
}
stream.out()
}).map_err(Into::into)
}
// Receive a response for block headers.
fn block_headers(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
fn block_headers(&self, _: &PeerId, _: &NetworkContext, _: UntrustedRlp) -> Result<(), Error> {
unimplemented!()
}
// Handle a request for block bodies.
fn get_block_bodies(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
const MAX_BODIES: usize = 512;
const MAX_BODIES: usize = 256;
unimplemented!()
let mut present_buffer = match self.peers.read().get(peer) {
Some(peer) => peer.local_buffer.clone(),
None => {
debug!(target: "les", "Ignoring announcement from unknown peer");
return Ok(())
}
};
self.flow_params.recharge(&mut present_buffer);
let req_id: u64 = try!(data.val_at(0));
let req = request::Bodies {
block_hashes: try!(data.iter().skip(1).take(MAX_BODIES).map(|x| x.as_val()).collect())
};
let max_cost = self.flow_params.compute_cost(request::Kind::Bodies, req.block_hashes.len());
try!(present_buffer.deduct_cost(max_cost));
let response = self.provider.block_bodies(req);
let response_len = response.iter().filter(|x| &x[..] != &::rlp::EMPTY_LIST_RLP).count();
let actual_cost = self.flow_params.compute_cost(request::Kind::Bodies, response_len);
let cur_buffer = match self.peers.write().get_mut(peer) {
Some(peer) => {
self.flow_params.recharge(&mut peer.local_buffer);
try!(peer.local_buffer.deduct_cost(actual_cost));
peer.local_buffer.current()
}
None => {
debug!(target: "les", "peer disconnected during serving of request.");
return Ok(())
}
};
io.respond(packet::BLOCK_BODIES, {
let mut stream = RlpStream::new_list(response.len() + 2);
stream.append(&req_id).append(&cur_buffer);
for body in response {
stream.append_raw(&body, 1);
}
stream.out()
}).map_err(Into::into)
}
// Receive a response for block bodies.
fn block_bodies(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
fn block_bodies(&self, _: &PeerId, _: &NetworkContext, _: UntrustedRlp) -> Result<(), Error> {
unimplemented!()
}
// Handle a request for receipts.
fn get_receipts(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
fn get_receipts(&self, _: &PeerId, _: &NetworkContext, _: UntrustedRlp) -> Result<(), Error> {
unimplemented!()
}
// Receive a response for receipts.
fn receipts(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
fn receipts(&self, _: &PeerId, _: &NetworkContext, _: UntrustedRlp) -> Result<(), Error> {
unimplemented!()
}
// Handle a request for proofs.
fn get_proofs(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
fn get_proofs(&self, _: &PeerId, _: &NetworkContext, _: UntrustedRlp) -> Result<(), Error> {
unimplemented!()
}
// Receive a response for proofs.
fn proofs(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
fn proofs(&self, _: &PeerId, _: &NetworkContext, _: UntrustedRlp) -> Result<(), Error> {
unimplemented!()
}
// Handle a request for contract code.
fn get_contract_code(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
fn get_contract_code(&self, _: &PeerId, _: &NetworkContext, _: UntrustedRlp) -> Result<(), Error> {
unimplemented!()
}
// Receive a response for contract code.
fn contract_code(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
fn contract_code(&self, _: &PeerId, _: &NetworkContext, _: UntrustedRlp) -> Result<(), Error> {
unimplemented!()
}
// Handle a request for header proofs
fn get_header_proofs(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
fn get_header_proofs(&self, _: &PeerId, _: &NetworkContext, _: UntrustedRlp) -> Result<(), Error> {
unimplemented!()
}
// Receive a response for header proofs
fn header_proofs(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
fn header_proofs(&self, _: &PeerId, _: &NetworkContext, _: UntrustedRlp) -> Result<(), Error> {
unimplemented!()
}
// Receive a set of transactions to relay.
fn relay_transactions(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
fn relay_transactions(&self, _: &PeerId, _: &NetworkContext, _: UntrustedRlp) -> Result<(), Error> {
unimplemented!()
}
}
@ -320,9 +440,11 @@ impl NetworkProtocolHandler for LightProtocol {
fn read(&self, io: &NetworkContext, peer: &PeerId, packet_id: u8, data: &[u8]) {
let rlp = UntrustedRlp::new(data);
// handle the packet
let res = match packet_id {
packet::STATUS => self.status(peer, io, rlp),
packet::ANNOUNCE => self.announcement(peer, io, rlp),
packet::STATUS => self.status(peer, rlp),
packet::ANNOUNCE => self.announcement(peer, rlp),
packet::GET_BLOCK_HEADERS => self.get_block_headers(peer, io, rlp),
packet::BLOCK_HEADERS => self.block_headers(peer, io, rlp),
@ -339,6 +461,9 @@ impl NetworkProtocolHandler for LightProtocol {
packet::GET_CONTRACT_CODES => self.get_contract_code(peer, io, rlp),
packet::CONTRACT_CODES => self.contract_code(peer, io, rlp),
packet::GET_HEADER_PROOFS => self.get_header_proofs(peer, io, rlp),
packet::HEADER_PROOFS => self.header_proofs(peer, io, rlp),
packet::SEND_TRANSACTIONS => self.relay_transactions(peer, io, rlp),
other => {
@ -346,6 +471,7 @@ impl NetworkProtocolHandler for LightProtocol {
}
};
// if something went wrong, figure out how much to punish the peer.
if let Err(e) = res {
match e.punishment() {
Punishment::None => {}
@ -365,11 +491,11 @@ impl NetworkProtocolHandler for LightProtocol {
self.on_connect(peer, io);
}
fn disconnected(&self, io: &NetworkContext, peer: &PeerId) {
self.on_disconnect(*peer, io);
fn disconnected(&self, _io: &NetworkContext, peer: &PeerId) {
self.on_disconnect(*peer);
}
fn timeout(&self, io: &NetworkContext, timer: TimerToken) {
fn timeout(&self, _io: &NetworkContext, timer: TimerToken) {
match timer {
TIMEOUT => {
// broadcast transactions to peers.

2
ethcore/light/src/net/status.rs
View File

@ -19,7 +19,7 @@
use rlp::{DecoderError, RlpDecodable, RlpEncodable, RlpStream, Stream, UntrustedRlp, View};
use util::{H256, U256};
use super::buffer_flow::{CostTable, FlowParams};
use super::buffer_flow::FlowParams;
// recognized handshake/announcement keys.
// unknown keys are to be skipped, known keys have a defined order.

7
ethcore/light/src/request.rs
View File

@ -18,8 +18,7 @@
// TODO: make IPC compatible.
use ethcore::transaction::Transaction;
use util::{Address, H256};
use util::H256;
/// A request for block headers.
#[derive(Debug, Clone, PartialEq, Eq)]
@ -27,9 +26,9 @@ pub struct Headers {
/// Block information for the request being made.
pub block: (u64, H256),
/// The maximum amount of headers which can be returned.
pub max: u64,
pub max: usize,
/// The amount of headers to skip between each response entry.
pub skip: u64,
pub skip: usize,
/// Whether the headers should proceed in falling number from the initial block.
pub reverse: bool,
}