ValueError: {'code': -32000, 'message': 'header not found'} (#201)

- Whitelist header not found as retryable RPC error - See discussion MetaMask/metamask-extension#7234
tradingstrategy-ai · Feb 2, 2024 · 3ad8944 · 3ad8944
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,6 +1,7 @@
-# Current
+# 0.25.1
 
-- Have a safe redemption time lock on Enzyme vault deployments 
+- Add: `VaultPolicyConfiguration.shares_action_timelock` Have a safe redemption time lock on Enzyme vault deployments
+- Add: [header not found](https://github.com/tradingstrategy-ai/web3-ethereum-defi/pull/201) in retryable exceptions
 
 # 0.25
 

diff --git a/eth_defi/middleware.py b/eth_defi/middleware.py
@@ -126,7 +126,16 @@
 #:
 #: See :py:data:`DEFAULT_RETRYABLE_RPC_ERROR_CODES`.
 #:
-DEFAULT_RETRYABLE_RPC_ERROR_MESSAGES = {"nonce too low"}
+DEFAULT_RETRYABLE_RPC_ERROR_MESSAGES = {
+
+    # When broadcasting batch transactions, the RPC provider
+    # has a load balancer that is not internally coherent
+    "nonce too low",
+
+    # Some random load balancer error?
+    # https://github.com/MetaMask/metamask-extension/issues/7234
+    "header not found"
+}
 
 #: Ethereum JSON-RPC calls where the value never changes
 #: