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Protect against flood of addresses (#1718)

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This commit is contained in:
Pierre Krieger
2019-02-07 14:54:59 +01:00
committed by Arkadiy Paronyan
parent 593c292f14
commit 0da92bf114
2 changed files with 12 additions and 4 deletions
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substrate/core/network-libp2p/src/behaviour.rs
+6 -1
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@@ -233,7 +233,7 @@ impl<TSubstream> NetworkBehaviourEventProcess<CustomProtosOut> for Behaviour<TSu
impl<TSubstream> NetworkBehaviourEventProcess<IdentifyEvent> for Behaviour<TSubstream> {
fn inject_event(&mut self, event: IdentifyEvent) {
match event {
IdentifyEvent::Identified { peer_id, info, .. } => {
IdentifyEvent::Identified { peer_id, mut info, .. } => {
trace!(target: "sub-libp2p", "Identified {:?} => {:?}", peer_id, info);
// TODO: ideally we would delay the first identification to when we open the custom
// protocol, so that we only report id info to the service about the nodes we
@@ -245,6 +245,11 @@ impl<TSubstream> NetworkBehaviourEventProcess<IdentifyEvent> for Behaviour<TSubs
warn!(target: "sub-libp2p", "Received identify response with empty list of \
addresses");
}
if info.listen_addrs.len() > 30 {
warn!(target: "sub-libp2p", "Node {:?} id reported more than 30 addresses",
peer_id);
info.listen_addrs.truncate(30);
}
for addr in &info.listen_addrs {
self.discovery.kademlia.add_address(&peer_id, addr.clone());
}