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| author | Péter Szilágyi <peterke@gmail.com> | 2018-02-16 23:05:08 +0800 |
|---|---|---|
| committer | Péter Szilágyi <peterke@gmail.com> | 2018-02-16 23:05:08 +0800 |
| commit | 32301a4d6b3a9684e954057e7cdb15998764122b (patch) | |
| tree | 62cd36e5912ce14e3665f9e3a246fda95271210c /p2p | |
| parent | 4e61ed02e2d32aa38f5a2f37b87bc52a71657809 (diff) | |
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p2p/discover: validate bond against lastpong, not db presence
Diffstat (limited to 'p2p')
| -rw-r--r-- | p2p/discover/udp.go | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/p2p/discover/udp.go b/p2p/discover/udp.go index e40de2c36..5cc0b3d74 100644 --- a/p2p/discover/udp.go +++ b/p2p/discover/udp.go @@ -613,7 +613,7 @@ func (req *findnode) handle(t *udp, from *net.UDPAddr, fromID NodeID, mac []byte if expired(req.Expiration) { return errExpired } - if t.db.node(fromID) == nil { + if age := time.Since(t.db.lastPong(fromID)); age > nodeDBNodeExpiration { // No bond exists, we don't process the packet. This prevents // an attack vector where the discovery protocol could be used // to amplify traffic in a DDOS attack. A malicious actor |