From 33756802f60f0e38744ec7f6e1fda7f8efc43b19 Mon Sep 17 00:00:00 2001
From: Sina M <1591639+s1na@users.noreply.github.com>
Date: Thu, 23 Jan 2025 20:38:09 +0100
Subject: [PATCH] eth/catalyst: fail on duplicate request types (#31071)

Refer to: https://github.com/ethereum/execution-apis/pull/623
---
 eth/catalyst/api.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/eth/catalyst/api.go b/eth/catalyst/api.go
index 91b6511f71..37d962d070 100644
--- a/eth/catalyst/api.go
+++ b/eth/catalyst/api.go
@@ -1303,7 +1303,8 @@ func validateRequests(requests [][]byte) error {
 			return fmt.Errorf("empty request: %v", req)
 		}
 		// Check that requests are ordered by their type.
-		if req[0] < last {
+		// Each type must appear only once.
+		if req[0] <= last {
 			return fmt.Errorf("invalid request order: %v", req)
 		}
 		last = req[0]