From 47ef42d5e4eb965eb2303d8dab143570e15ff331 Mon Sep 17 00:00:00 2001
From: derpy-duck <115193320+derpy-duck@users.noreply.github.com>
Date: Tue, 19 Sep 2023 12:00:29 -0400
Subject: [PATCH] remove replay protection

---
 src/HelloWormhole.sol                        | 8 +-------
 src/extensions/HelloWormholeConfirmation.sol | 3 +--
 src/extensions/HelloWormholeProtections.sol  | 3 +--
 3 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/src/HelloWormhole.sol b/src/HelloWormhole.sol
index 7acdad8..fcaac63 100644
--- a/src/HelloWormhole.sol
+++ b/src/HelloWormhole.sol
@@ -33,21 +33,15 @@ contract HelloWormhole is IWormholeReceiver {
         );
     }
 
-    mapping(bytes32 => bool) public seenDeliveryVaaHashes;
-
     function receiveWormholeMessages(
         bytes memory payload,
         bytes[] memory, // additionalVaas
         bytes32, // address that called 'sendPayloadToEvm' (HelloWormhole contract address)
         uint16 sourceChain,
-        bytes32 deliveryHash // this can be stored in a mapping deliveryHash => bool to prevent duplicate deliveries
+        bytes32 // delivery hash - unique identifier of delivery
     ) public payable override {
         require(msg.sender == address(wormholeRelayer), "Only relayer allowed");
 
-        // Ensure no duplicate deliveries
-        require(!seenDeliveryVaaHashes[deliveryHash], "Message already processed");
-        seenDeliveryVaaHashes[deliveryHash] = true;
-
         // Parse the payload and do the corresponding actions!
         (string memory greeting, address sender) = abi.decode(payload, (string, address));
         latestGreeting = greeting;
diff --git a/src/extensions/HelloWormholeConfirmation.sol b/src/extensions/HelloWormholeConfirmation.sol
index 5cd9918..c11fd5e 100644
--- a/src/extensions/HelloWormholeConfirmation.sol
+++ b/src/extensions/HelloWormholeConfirmation.sol
@@ -52,14 +52,13 @@ contract HelloWormholeConfirmation is Base, IWormholeReceiver {
         bytes[] memory, // additionalVaas
         bytes32 sourceAddress,
         uint16 sourceChain,
-        bytes32 deliveryHash
+        bytes32 // delivery hash
     )
         public
         payable
         override
         onlyWormholeRelayer
         isRegisteredSender(sourceChain, sourceAddress)
-        replayProtect(deliveryHash)
     {
         MessageType msgType = abi.decode(payload, (MessageType));
 
diff --git a/src/extensions/HelloWormholeProtections.sol b/src/extensions/HelloWormholeProtections.sol
index 2755aa2..2067219 100644
--- a/src/extensions/HelloWormholeProtections.sol
+++ b/src/extensions/HelloWormholeProtections.sol
@@ -35,14 +35,13 @@ contract HelloWormholeProtections is Base, IWormholeReceiver {
         bytes[] memory, // additionalVaas
         bytes32 sourceAddress,
         uint16 sourceChain,
-        bytes32 deliveryHash
+        bytes32 // delivery hash
     )
         public
         payable
         override
         onlyWormholeRelayer
         isRegisteredSender(sourceChain, sourceAddress)
-        replayProtect(deliveryHash)
     {
         (string memory greeting, address sender) = abi.decode(payload, (string, address));
         latestGreeting = greeting;