add small buffer for header from future accounting

celestiaorg · Aug 24, 2023 · 84b76c3 · 84b76c3
1 parent 8db8d54
commit 84b76c3
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/sync/sync_head.go b/sync/sync_head.go
@@ -161,7 +161,8 @@ func (s *Syncer[H]) verify(ctx context.Context, newHead H) (bool, error) {
 
 	var heightThreshold int64
 	if s.Params.TrustingPeriod != 0 && s.Params.blockTime != 0 {
-		heightThreshold = int64(s.Params.TrustingPeriod / s.Params.blockTime)
+		buffer := time.Hour * 6 / s.Params.blockTime // small buffer to account for network delays
+		heightThreshold = int64(s.Params.TrustingPeriod / s.Params.blockTime + buffer)
 	}
 
 	err = header.Verify(sbjHead, newHead, heightThreshold)

diff --git a/verify.go b/verify.go
@@ -8,7 +8,7 @@ import (
 
 // DefaultHeightThreshold defines default height threshold beyond which headers are rejected
 // NOTE: Compared against subjective head which is guaranteed to be non-expired
-const DefaultHeightThreshold int64 = 40000 // ~ 7 days of 15 second headers
+const DefaultHeightThreshold int64 = 80000 // ~ 14 days of 15 second headers
 
 // Verify verifies untrusted Header against trusted following general Header checks and
 // custom user-specific checks defined in Header.Verify