Caplin: fixed remote DOS (#13482)

added circuit breaker if too many iterations are performed
erigontech · Jan 19, 2025 · 37cf19f · 37cf19f
1 parent 9d18363
commit 37cf19f
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/cl/sentinel/handlers/blobs.go b/cl/sentinel/handlers/blobs.go
@@ -51,7 +51,13 @@ func (c *ConsensusHandlers) blobsSidecarsByRangeHandler(s network.Stream, versio
 	defer tx.Rollback()
 
 	written := 0
+	maxIter := 32
+	currIter := 0
 	for slot := req.StartSlot; slot < req.StartSlot+req.Count; slot++ {
+		if currIter >= maxIter {
+			break
+		}
+		currIter++
 		blockRoot, err := beacon_indicies.ReadCanonicalBlockRoot(tx, slot)
 		if err != nil {
 			return err