close connection when block verification failed with error
This commit is contained in:
parent
ffd306d4a5
commit
2b1fecb286
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@ -3,6 +3,7 @@ use parking_lot::Mutex;
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use message::{Payload, Message};
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use p2p::Context;
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use util::{PeerInfo, ConfigurableSynchronizer, ResponseQueue, Synchronizer, Responses};
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use futures::{lazy, finished};
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pub struct PeerContext {
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context: Arc<Context>,
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@ -104,6 +105,17 @@ impl PeerContext {
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}
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}
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/// Closes this context
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pub fn close(&self) {
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let context = self.context.clone();
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let peer_id = self.info.id;
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let close = lazy(move || {
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context.close_channel(peer_id);
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finished::<(), ()>(())
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});
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self.context.spawn(close);
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}
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pub fn info(&self) -> &PeerInfo {
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&self.info
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}
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@ -60,6 +60,7 @@ pub trait OutboundSyncConnection : Send + Sync {
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fn send_block_txn(&self, message: &types::BlockTxn);
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fn send_notfound(&self, message: &types::NotFound);
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fn ignored(&self, id: u32);
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fn close(&self);
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}
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struct OutboundSync {
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@ -162,6 +163,10 @@ impl OutboundSyncConnection for OutboundSync {
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fn ignored(&self, id: u32) {
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self.context.ignore_response(id);
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}
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fn close(&self) {
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self.context.close()
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}
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}
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pub struct SyncProtocol {
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@ -305,6 +305,7 @@ mod tests {
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fn send_block_txn(&self, _message: &types::BlockTxn) {}
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fn send_notfound(&self, _message: &types::NotFound) {}
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fn ignored(&self, _id: u32) {}
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fn close(&self) {}
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}
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fn create_local_node() -> (Core, Handle, Arc<Mutex<DummyTaskExecutor>>, Arc<DummyServer>, LocalNode<DummyTaskExecutor, DummyServer, SynchronizationClient<DummyTaskExecutor, DummyVerifier>>) {
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@ -1,6 +1,6 @@
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use std::fmt;
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use std::sync::Arc;
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use std::collections::VecDeque;
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use std::collections::{VecDeque, HashSet};
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use linked_hash_map::LinkedHashMap;
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use parking_lot::RwLock;
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use chain::{BlockHeader, Transaction};
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@ -55,6 +55,8 @@ pub enum BlockState {
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Verifying,
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/// In storage
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Stored,
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/// This block has been marked as dead-end block
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DeadEnd,
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}
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/// Transactions synchronization state
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@ -101,6 +103,8 @@ pub enum HeadersIntersection {
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DbAllBlocksKnown,
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/// 3.4: No intersection with in-memory queue && has intersection with db && some blocks are not yet stored in db
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DbForkNewBlocks(usize),
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/// Dead-end blocks are starting from given index
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DeadEnd(usize),
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}
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/// Blockchain from synchroniation point of view, consisting of:
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@ -123,6 +127,8 @@ pub struct Chain {
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verifying_transactions: LinkedHashMap<H256, Transaction>,
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/// Transactions memory pool
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memory_pool: MemoryPool,
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/// Blocks that have been marked as dead-ends
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dead_end_blocks: HashSet<H256>,
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}
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impl BlockState {
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@ -163,6 +169,7 @@ impl Chain {
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headers_chain: BestHeadersChain::new(best_storage_block_hash),
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verifying_transactions: LinkedHashMap::new(),
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memory_pool: MemoryPool::new(),
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dead_end_blocks: HashSet::new(),
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}
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}
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@ -276,7 +283,11 @@ impl Chain {
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None => if self.storage.contains_block(db::BlockRef::Hash(hash.clone())) {
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BlockState::Stored
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} else {
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BlockState::Unknown
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if self.dead_end_blocks.contains(hash) {
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BlockState::DeadEnd
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} else {
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BlockState::Unknown
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}
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},
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}
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}
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@ -334,6 +345,11 @@ impl Chain {
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requested
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}
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/// Mark this block as dead end, so these tasks won't be synchronized
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pub fn mark_dead_end_block(&mut self, hash: &H256) {
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self.dead_end_blocks.insert(hash.clone());
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}
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/// Insert new best block to storage
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pub fn insert_best_block(&mut self, hash: H256, block: &IndexedBlock) -> Result<BlockInsertionResult, db::Error> {
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let is_appending_to_main_branch = self.best_storage_block.hash == block.header().previous_header_hash;
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@ -516,6 +532,10 @@ impl Chain {
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state => (true, state),
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};
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match first_state {
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// if first block of inventory is dead-end, then all other blocks are also dead-end blocks
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BlockState::DeadEnd => {
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HeadersIntersection::DeadEnd(0)
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},
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// if first block of inventory is unknown && its parent is unknonw => all other blocks are also unknown
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BlockState::Unknown => {
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HeadersIntersection::NoKnownBlocks(0)
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@ -542,14 +562,18 @@ impl Chain {
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}
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},
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// if first block is known && last block is unknown => intersection with queue or with db
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BlockState::Unknown if is_first_known => {
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BlockState::Unknown | BlockState::DeadEnd if is_first_known => {
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// find last known block
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let mut previous_state = first_block_state;
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for (index, hash) in hashes.iter().enumerate().take(hashes_len).skip(1) {
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let state = self.block_state(hash);
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if state == BlockState::Unknown {
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if state == BlockState::Unknown || state == BlockState::DeadEnd {
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// if state is dead end => there are no useful blocks
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if state == BlockState::DeadEnd {
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return HeadersIntersection::DeadEnd(index);
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}
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// previous block is stored => fork from stored block
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if previous_state == BlockState::Stored {
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else if previous_state == BlockState::Stored {
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return HeadersIntersection::DbForkNewBlocks(index);
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}
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// previous block is best block => no fork
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@ -1194,4 +1218,49 @@ mod tests {
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// => tx2 is removed from memory pool, but tx3 remains
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assert_eq!(chain.information().transactions.transactions_count, 1);
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}
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#[test]
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fn chain_dead_end() {
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let mut chain = Chain::new(Arc::new(db::TestStorage::with_genesis_block()));
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let blocks = test_data::build_n_empty_blocks_from(5, 0, &test_data::genesis().block_header);
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let headers: Vec<_> = blocks.iter().map(|b| b.block_header.clone()).collect();
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let hashes: Vec<_> = headers.iter().map(|h| h.hash()).collect();
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chain.insert_best_block(blocks[0].hash(), &blocks[0].clone().into()).expect("no error");
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chain.insert_best_block(blocks[1].hash(), &blocks[1].clone().into()).expect("no error");
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chain.mark_dead_end_block(&blocks[2].hash());
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assert_eq!(chain.intersect_with_blocks_headers(&vec![
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hashes[0].clone(),
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hashes[1].clone(),
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hashes[2].clone(),
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hashes[3].clone(),
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hashes[4].clone(),
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], &vec![
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headers[0].clone(),
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headers[1].clone(),
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headers[2].clone(),
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headers[3].clone(),
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headers[4].clone(),
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]), HeadersIntersection::DeadEnd(2));
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assert_eq!(chain.intersect_with_blocks_headers(&vec![
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hashes[2].clone(),
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hashes[3].clone(),
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hashes[4].clone(),
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], &vec![
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headers[2].clone(),
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headers[3].clone(),
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headers[4].clone(),
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]), HeadersIntersection::DeadEnd(0));
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assert_eq!(chain.intersect_with_blocks_headers(&vec![
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hashes[3].clone(),
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hashes[4].clone(),
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], &vec![
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headers[3].clone(),
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headers[4].clone(),
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]), HeadersIntersection::DeadEnd(0));
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}
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}
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@ -1016,12 +1016,21 @@ impl<T> VerificationSink for SynchronizationClientCore<T> where T: TaskExecutor
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self.do_not_relay.remove(hash);
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// close connection with this peer
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if let Some(peer_index) = self.verifying_blocks_by_peer.get(hash) {
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warn!(target: "sync", "Closing connection with peer#{} as it has provided us with wrong block {:?}", peer_index, hash.to_reversed_str());
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self.executor.lock().execute(Task::Close(*peer_index));
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}
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{
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let mut chain = self.chain.write();
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// forget for this block and all its children
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// headers are also removed as they all are invalid
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chain.forget_block_with_children(hash);
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// mark failed block as dead end (this branch won't be synchronized)
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chain.mark_dead_end_block(hash);
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}
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// awake threads, waiting for this block insertion
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@ -1259,6 +1268,10 @@ impl<T> SynchronizationClientCore<T> where T: TaskExecutor {
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let mut chain = self.chain.write();
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match chain.intersect_with_blocks_headers(&hashes, &headers) {
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HeadersIntersection::DeadEnd(dead_block_index) => {
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warn!(target: "sync", "Closing connection with peer#{} as it has provided us with dead-end block {:?}", peer_index, hashes[dead_block_index].to_reversed_str());
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self.executor.lock().execute(Task::Close(peer_index));
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},
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HeadersIntersection::NoKnownBlocks(_) if self.state.is_synchronizing() => {
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warn!(target: "sync", "Ignoring {} headers from peer#{}. Unknown and we are synchronizing.", headers.len(), peer_index);
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},
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@ -1281,7 +1294,18 @@ impl<T> SynchronizationClientCore<T> where T: TaskExecutor {
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// check that we do not know all blocks in range [new_block_index..]
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// if we know some block => there has been verification error => all headers should be ignored
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// see when_previous_block_verification_failed_fork_is_not_requested for details
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if hashes.iter().skip(new_block_index).any(|h| chain.block_state(h) != BlockState::Unknown) {
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if hashes.iter().skip(new_block_index).any(|h| {
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let block_state = chain.block_state(h);
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match block_state {
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BlockState::Unknown => false,
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BlockState::DeadEnd => {
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warn!(target: "sync", "Closing connection with peer#{} as it has provided us with blocks lead to dead-end block {:?}", peer_index, h.to_reversed_str());
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self.executor.lock().execute(Task::Close(peer_index));
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true
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},
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_ => true,
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}
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}) {
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return;
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}
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@ -1319,6 +1343,10 @@ impl<T> SynchronizationClientCore<T> where T: TaskExecutor {
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let mut result: Option<VecDeque<(H256, IndexedBlock)>> = None;
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let mut chain = self.chain.write();
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match chain.block_state(&block_hash) {
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BlockState::DeadEnd => {
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warn!(target: "sync", "Closing connection with peer#{} as it has provided us with dead-end block {:?}", peer_index, block_hash.to_reversed_str());
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self.executor.lock().execute(Task::Close(peer_index));
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},
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BlockState::Verifying | BlockState::Stored => {
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// remember peer as useful
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self.peers.useful_peer(peer_index);
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@ -1326,6 +1354,10 @@ impl<T> SynchronizationClientCore<T> where T: TaskExecutor {
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BlockState::Unknown | BlockState::Scheduled | BlockState::Requested => {
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// check parent block state
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match chain.block_state(&block.header().previous_header_hash) {
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BlockState::DeadEnd => {
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warn!(target: "sync", "Closing connection with peer#{} as it has provided us with dead-end block {:?}", peer_index, block_hash.to_reversed_str());
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self.executor.lock().execute(Task::Close(peer_index));
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},
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BlockState::Unknown => {
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if self.state.is_synchronizing() {
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// when synchronizing, we tend to receive all blocks in-order
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@ -2605,4 +2637,85 @@ pub mod tests {
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assert_eq!(headers_provider.block_header(db::BlockRef::Hash(H256::from(1))), None);
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assert_eq!(headers_provider.block_header(db::BlockRef::Number(2)), None);
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}
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#[test]
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fn collection_closed_on_block_verification_error() {
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let genesis = test_data::genesis();
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let b0 = test_data::block_builder().header().parent(genesis.hash()).build().build();
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// simulate verification error during b0 verification
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let mut dummy_verifier = DummyVerifier::default();
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dummy_verifier.error_when_verifying(b0.hash(), "simulated");
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let (_, _, executor, _, sync) = create_sync(None, Some(dummy_verifier));
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sync.lock().on_peer_block(0, b0.into());
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let tasks = executor.lock().take_tasks();
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assert_eq!(tasks, vec![Task::Close(0)]);
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}
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#[test]
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fn collection_closed_on_begin_dead_end_block_header() {
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let genesis = test_data::genesis();
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let b0 = test_data::block_builder().header().parent(genesis.hash()).build().build();
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let b1 = test_data::block_builder().header().parent(b0.hash()).build().build();
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let b2 = test_data::block_builder().header().parent(b1.hash()).build().build();
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let (_, _, executor, chain, sync) = create_sync(None, None);
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{
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chain.write().mark_dead_end_block(&b0.hash());
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}
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sync.lock().on_new_blocks_headers(0, vec![b0.block_header.clone(), b1.block_header.clone(), b2.block_header.clone()]);
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let tasks = executor.lock().take_tasks();
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assert_eq!(tasks, vec![Task::Close(0)]);
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}
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#[test]
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fn collection_closed_on_in_middle_dead_end_block_header() {
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let genesis = test_data::genesis();
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let b0 = test_data::block_builder().header().parent(genesis.hash()).build().build();
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let b1 = test_data::block_builder().header().parent(b0.hash()).build().build();
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let b2 = test_data::block_builder().header().parent(b1.hash()).build().build();
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let (_, _, executor, chain, sync) = create_sync(None, None);
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{
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chain.write().mark_dead_end_block(&b1.hash());
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}
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sync.lock().on_new_blocks_headers(0, vec![b0.block_header.clone(), b1.block_header.clone(), b2.block_header.clone()]);
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let tasks = executor.lock().take_tasks();
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assert_eq!(tasks, vec![Task::Close(0)]);
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}
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#[test]
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fn collection_closed_on_providing_dead_end_block() {
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let genesis = test_data::genesis();
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let b0 = test_data::block_builder().header().parent(genesis.hash()).build().build();
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let (_, _, executor, chain, sync) = create_sync(None, None);
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{
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chain.write().mark_dead_end_block(&b0.hash());
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}
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sync.lock().on_peer_block(0, b0.into());
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let tasks = executor.lock().take_tasks();
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assert_eq!(tasks, vec![Task::Close(0)]);
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}
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#[test]
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fn collection_closed_on_providing_child_dead_end_block() {
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let genesis = test_data::genesis();
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let b0 = test_data::block_builder().header().parent(genesis.hash()).build().build();
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let b1 = test_data::block_builder().header().parent(b0.hash()).build().build();
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let (_, _, executor, chain, sync) = create_sync(None, None);
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{
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chain.write().mark_dead_end_block(&b0.hash());
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}
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sync.lock().on_peer_block(0, b1.into());
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let tasks = executor.lock().take_tasks();
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assert_eq!(tasks, vec![Task::Close(0)]);
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}
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}
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@ -46,6 +46,8 @@ pub enum Task {
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SendCompactBlocks(usize, Vec<BlockHeaderAndIDs>),
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/// Notify io about ignored request
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Ignore(usize, u32),
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/// Close connection with this peer
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Close(usize),
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}
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/// Synchronization tasks executor
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@ -56,6 +58,28 @@ pub struct LocalSynchronizationTaskExecutor {
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chain: ChainRef,
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}
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impl Task {
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#[cfg(test)]
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pub fn peer_index(&self) -> usize {
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match *self {
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Task::RequestBlocks(peer_index, _) => peer_index,
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Task::RequestBlocksHeaders(peer_index) => peer_index,
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Task::RequestTransactions(peer_index, _) => peer_index,
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Task::RequestMemoryPool(peer_index) => peer_index,
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Task::SendBlock(peer_index, _) => peer_index,
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Task::SendMerkleBlock(peer_index, _) => peer_index,
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Task::SendTransaction(peer_index, _) => peer_index,
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Task::SendBlockTxn(peer_index, _, _) => peer_index,
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Task::SendNotFound(peer_index, _) => peer_index,
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Task::SendInventory(peer_index, _) => peer_index,
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Task::SendHeaders(peer_index, _, _) => peer_index,
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Task::SendCompactBlocks(peer_index, _) => peer_index,
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Task::Ignore(peer_index, _) => peer_index,
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Task::Close(peer_index) => peer_index,
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}
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}
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}
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impl LocalSynchronizationTaskExecutor {
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pub fn new(chain: ChainRef) -> Arc<Mutex<Self>> {
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Arc::new(Mutex::new(LocalSynchronizationTaskExecutor {
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|
@ -215,6 +239,12 @@ impl TaskExecutor for LocalSynchronizationTaskExecutor {
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connection.ignored(id);
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}
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},
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Task::Close(peer_index) => {
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if let Some(connection) = self.peers.get_mut(&peer_index) {
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trace!(target: "sync", "Closing request with peer#{}", peer_index);
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connection.close();
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}
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},
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}
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}
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}
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|
@ -228,10 +258,12 @@ pub mod tests {
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use parking_lot::{Mutex, Condvar};
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use local_node::PeersConnections;
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use p2p::OutboundSyncConnectionRef;
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use std::collections::HashSet;
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pub struct DummyTaskExecutor {
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tasks: Vec<Task>,
|
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waiter: Arc<Condvar>,
|
||||
closed: HashSet<usize>,
|
||||
}
|
||||
|
||||
impl DummyTaskExecutor {
|
||||
|
@ -239,6 +271,7 @@ pub mod tests {
|
|||
Arc::new(Mutex::new(DummyTaskExecutor {
|
||||
tasks: Vec::new(),
|
||||
waiter: Arc::new(Condvar::new()),
|
||||
closed: HashSet::new(),
|
||||
}))
|
||||
}
|
||||
|
||||
|
@ -267,6 +300,13 @@ pub mod tests {
|
|||
|
||||
impl TaskExecutor for DummyTaskExecutor {
|
||||
fn execute(&mut self, task: Task) {
|
||||
match task {
|
||||
Task::Close(id) => {
|
||||
self.closed.insert(id);
|
||||
()
|
||||
},
|
||||
_ => if self.closed.contains(&task.peer_index()) { return },
|
||||
}
|
||||
self.tasks.push(task);
|
||||
self.waiter.notify_one();
|
||||
}
|
||||
|
|
|
@ -280,11 +280,10 @@ impl SynchronizationServer {
|
|||
},
|
||||
// `getblocktxn` => `blocktxn`
|
||||
ServerTask::ServeGetBlockTxn(block_hash, indexes) => {
|
||||
let transactions = {
|
||||
let (close, transactions) = {
|
||||
let chain = chain.read();
|
||||
let storage = chain.storage();
|
||||
if let Some(block) = storage.block(db::BlockRef::Hash(block_hash.clone())) {
|
||||
|
||||
let requested_len = indexes.len();
|
||||
let transactions_len = block.transactions.len();
|
||||
let mut read_indexes = HashSet::new();
|
||||
|
@ -302,20 +301,23 @@ impl SynchronizationServer {
|
|||
.map(Option::unwrap) // take_while above
|
||||
.collect();
|
||||
if transactions.len() == requested_len {
|
||||
Some(transactions)
|
||||
(false, Some(transactions))
|
||||
} else {
|
||||
// TODO: malformed
|
||||
None
|
||||
warn!(target: "sync", "Closing connection with peer#{} as it has requested unknown block_txn from block {:?}", peer_index, block_hash.to_reversed_str());
|
||||
(true, None)
|
||||
}
|
||||
} else {
|
||||
// TODO: else malformed
|
||||
None
|
||||
warn!(target: "sync", "Closing connection with peer#{} as it has requested block_txn from unknown block {:?}", peer_index, block_hash.to_reversed_str());
|
||||
(true, None)
|
||||
}
|
||||
};
|
||||
if let Some(transactions) = transactions {
|
||||
trace!(target: "sync", "Going to respond with {} blocktxn transactions to peer#{}", transactions.len(), peer_index);
|
||||
executor.lock().execute(Task::SendBlockTxn(peer_index, block_hash, transactions));
|
||||
}
|
||||
if close {
|
||||
executor.lock().execute(Task::Close(peer_index));
|
||||
}
|
||||
},
|
||||
// `mempool` => `inventory`
|
||||
ServerTask::ServeMempool => {
|
||||
|
@ -766,7 +768,7 @@ pub mod tests {
|
|||
server.serve_get_block_txn(0, test_data::genesis().hash(), vec![1]).map(|t| server.add_task(0, t));
|
||||
// server responds with transactions
|
||||
let tasks = DummyTaskExecutor::wait_tasks(executor);
|
||||
assert_eq!(tasks, vec![]);
|
||||
assert_eq!(tasks, vec![Task::Close(0)]);
|
||||
}
|
||||
|
||||
#[test]
|
||||
|
|
Loading…
Reference in New Issue