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Make Gossip DNS reject gossip messages if clockskew > tombstoneTimeout / 2 #1176
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| return nil, nil, err | ||
| } | ||
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| if err := entries.check(); err != nil { | ||
| if gossip.Timestamp < now()-int64(gossipWindow/time.Second) { | ||
| return nil, nil, fmt.Errorf("Refusing old gossip message: %d", gossip.Timestamp) |
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| return nil, nil, err | ||
| } | ||
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| if err := entries.check(); err != nil { | ||
| if delta := gossip.Timestamp - now(); delta > gossipWindow || delta < -gossipWindow { | ||
| return nil, nil, fmt.Errorf("Refusing old gossip message (delta %d): %d", delta, gossip.Timestamp) |
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Apart from one nit this LOKTM |
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Test failure is flakey TestNameservers so can safely be ignored. I'm looking into it. |
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Fixes #1156
5mins max clock skew seems too small to me; I suggest we make it bigger (and therefore make the DNS tombstone timeout larger).