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Better handle sync reorgs

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This commit is contained in:
arkpar 2016-11-25 12:53:40 +01:00
parent b669dbb390
commit a50974e61b
1 changed files with 11 additions and 2 deletions
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13
sync/src/chain.rs
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@ -631,9 +631,13 @@ impl ChainSync {
self.highest_block = Some(header.number());
}
let mut unknown = false;
let difficulty: U256 = try!(r.val_at(1));
{
if let Some(ref mut peer) = self.peers.get_mut(&peer_id) {
peer.latest_hash = header.hash();
if peer.difficulty.map_or(true, |pd| difficulty > pd) {
peer.difficulty = Some(difficulty);
}
}
}
if self.last_imported_block > header.number() && self.last_imported_block - header.number() > MAX_NEW_BLOCK_AGE {
@ -670,11 +674,9 @@ impl ChainSync {
} else {
trace!(target: "sync", "New unknown block {:?}", h);
//TODO: handle too many unknown blocks
let difficulty: U256 = try!(r.val_at(1));
if let Some(ref mut peer) = self.peers.get_mut(&peer_id) {
if peer.difficulty.map_or(true, |pd| difficulty > pd) {
//self.state = SyncState::ChainHead;
peer.difficulty = Some(difficulty);
trace!(target: "sync", "Received block {:?} with no known parent. Peer needs syncing...", h);
}
}
@ -729,6 +731,7 @@ impl ChainSync {
trace!(target: "sync", "New unknown block hash {:?}", hash);
if let Some(ref mut peer) = self.peers.get_mut(&peer_id) {
peer.latest_hash = hash.clone();
peer.difficulty = None;
}
max_height = number;
}
@ -974,6 +977,7 @@ impl ChainSync {
},
Err(BlockImportError::Block(BlockError::UnknownParent(_))) if self.state == SyncState::NewBlocks => {
trace!(target: "sync", "Unknown new block parent, restarting sync");
restart = true;
break;
},
Err(e) => {
@ -994,6 +998,11 @@ impl ChainSync {
if self.blocks.is_empty() {
// complete sync round
trace!(target: "sync", "Sync round complete");
for (_, ref mut p) in &mut self.peers {
if p.difficulty.is_none() {
p.difficulty = Some(self.syncing_difficulty.clone());
}
}
self.restart(io);
}
}