Add blockByNumber to engine_client of simulator (#2902)

hive_integration/nodocker/engine/auths_tests.nim

@@ -25,7 +25,7 @@ const
   defaultProtectedHeader     = "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9"
 
 createRpcSigsFromNim(RpcClient):
-  proc engine_getClientVersionV1(version: ClientVersionV1): ClientVersionV1
+  proc engine_getClientVersionV1(version: ClientVersionV1): seq[ClientVersionV1]
 
 func base64urlEncode(x: auto): string =
   base64.encode(x, safe = true).replace("=", "")

hive_integration/nodocker/engine/engine_client.nim

@@ -40,6 +40,8 @@ template wrapTry(body: untyped) =
     return err(e.msg)
   except JsonRpcError as ex:
     return err(ex.msg)
+  except JsonReaderError as ex:
+    return err(ex.formatMsg("rpc"))
   except CatchableError as ex:
     return err(ex.msg)
 
@@ -455,6 +457,18 @@ proc latestBlock*(client: RpcClient): Result[Block, string] =
     )
     return ok(output)
 
+proc blockByNumber*(client: RpcClient, number: uint64): Result[Block, string] =
+  wrapTry:
+    let res = waitFor client.eth_getBlockByNumber(blockId(number), true)
+    if res.isNil:
+      return err("failed to get block " & $number)
+    let output = Block(
+      header: toBlockHeader(res),
+      transactions: toTransactions(res.transactions),
+      withdrawals: res.withdrawals,
+    )
+    return ok(output)
+
 proc namedHeader*(client: RpcClient, name: string): Result[Header, string] =
   wrapTry:
     let res = waitFor client.eth_getBlockByNumber(name, false)