Retry JSON-RPC requests on "invalid block range params" error

Author: droserasprout

CHANGELOG.md

@@ -8,6 +8,10 @@ Releases prior to 7.0 has been removed from this file to declutter search result
 
 ## [Unreleased]
 
+### Fixed
+
+- evm.node: Retry JSON-RPC requests on "invalid block range params" error.
+
 ## [8.5.1] - 2025-11-03
 
 ### Fixed

src/dipdup/datasources/evm_node.py

@@ -161,6 +161,33 @@ async def _emitter_loop(self) -> None:
 
             del self._level_data[head.hash]
 
+    async def _jsonrpc_request(
+        self,
+        method: str,
+        params: Any,
+        raw: bool = False,
+        ws: bool = False,
+    ) -> Any:
+        attempt = 1
+        retry_sleep = self._http_config.retry_sleep
+        retry_count = self._http_config.retry_count
+        last_attempt = retry_count + 1
+
+        while True:
+            try:
+                return await super()._jsonrpc_request(method, params, raw=raw, ws=ws)
+            except DatasourceError as e:
+                # NOTE: Special case: node is out of sync, but we don't track
+                # `syncing` events, so just retry as a safe HTTP exception.
+                if 'invalid block range params' not in str(e) or attempt == last_attempt:
+                    raise
+
+                self._logger.warning('JSON-RPC request `%s` failed, retrying: %s', method, e)
+                to_sleep = float(f'{retry_sleep:.1f}')
+                self._logger.info('Waiting %s seconds before retry', to_sleep)
+                await asyncio.sleep(to_sleep)
+                attempt += 1
+
     @property
     def ws_available(self) -> bool:
         return self._config.ws_url is not None