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fix: update announce hash generation in Transport to exclude hop count and header for uniqueness

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ivan
2025-12-30 23:46:00 -06:00
parent a59dca45a7
commit 8124d95192
1 changed files with 10 additions and 2 deletions
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12
pkg/transport/transport.go
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@@ -652,7 +652,11 @@ func (t *Transport) HandleAnnounce(data []byte, sourceIface common.NetworkInterf
appData := data[common.SIZE_16+common.SIZE_32+common.ONE:]
// Generate announce hash to check for duplicates
announceHash := sha256.Sum256(data)
// We exclude the hop count (byte 1) from the hash since it changes during propagation
// We also exclude the header (byte 0) just in case propagation flags change
// The destination hash (bytes 2-18) + payload (including random hash) is unique enough
hashData := data[common.TWO:]
announceHash := sha256.Sum256(hashData)
hashStr := string(announceHash[:])
t.mutex.Lock()
@@ -1081,7 +1085,11 @@ func (t *Transport) handleAnnouncePacket(data []byte, iface common.NetworkInterf
identity.Remember(data, destinationHash, pubKey, appData)
// Generate announce hash to check for duplicates
announceHash := sha256.Sum256(data)
// We exclude the hop count (byte 1) from the hash since it changes during propagation
// We also exclude the header (byte 0) just in case propagation flags change
// The destination hash (bytes 2-18) + payload (including random hash) is unique enough
hashData := data[common.TWO:]
announceHash := sha256.Sum256(hashData)
hashStr := string(announceHash[:])
debug.Log(debug.DEBUG_INFO, "Announce hash", "hash", fmt.Sprintf("%x", announceHash[:8]))