Handle 429 error (#782)

src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/EthereumLowerBoundProofDetector.kt

@@ -29,6 +29,7 @@ class EthereumLowerBoundProofDetector(
             "no historical RPC is available",
             "Method not found", // Monad error bc they don't have eth_getProofs
             "invalid block height", // hyperliquid
+            "not supported",
         )
     }
 

src/main/kotlin/io/emeraldpay/dshackle/upstream/rpcclient/JsonRpcHttpReader.kt

@@ -107,8 +107,8 @@ class JsonRpcHttpReader(
             resp.map {
                 when (it) {
                     is AggregateResponse -> {
-                        val parsed = parser.parse(it.response)
                         val statusCode = it.code
+                        val parsed = parser.parse(it.response)
                         if (statusCode != 200) {
                             if (parsed.hasError() && parsed.error!!.code != RpcResponseError.CODE_UPSTREAM_INVALID_RESPONSE) {
                                 // extracted the error details from the HTTP Body