diff --git a/dependencies/mariadb-connector-c b/dependencies/mariadb-connector-c
index 1f7480118..159540fe8 160000
--- a/dependencies/mariadb-connector-c
+++ b/dependencies/mariadb-connector-c
@@ -1 +1 @@
-Subproject commit 1f7480118acfe12be9e356827aa30ae9b9eca9a7
+Subproject commit 159540fe8c8f30b281748fe8a1b79e8b17993a67
diff --git a/src/cpp/lib/JsonRequest.cpp b/src/cpp/lib/JsonRequest.cpp
index 825d30f66..fa12de0b9 100644
--- a/src/cpp/lib/JsonRequest.cpp
+++ b/src/cpp/lib/JsonRequest.cpp
@@ -192,93 +192,3 @@ JsonRequestReturn JsonRequest::requestGRPCRelay(const Poco::Net::NameValueCollec
 	
 	return JSON_REQUEST_RETURN_OK;
 }
-#include "Poco/JSON/Stringifier.h"
-JsonRequestReturn JsonRequest::requestGRPCRelay(const Poco::Net::NameValueCollection& payload)
-{
-	static const char* functionName = "JsonRequest::requestGRPCRelay";
-	Poco::JSON::Object requestJson;
-	
-	for (auto it = payload.begin(); it != payload.end(); it++) {
-		requestJson.set(it->first, it->second);
-	}
-
-	// send post request via https
-	// 443 = HTTPS Default
-	// TODO: adding port into ServerConfig
-	try {
-		Profiler phpRequestTime;
-		Poco::Net::HTTPClientSession httpClientSession(mServerHost, mServerPort);
-		Poco::Net::HTTPRequest request(Poco::Net::HTTPRequest::HTTP_POST, "/hedera_rpc_relay/gRPCProxy.php");
-
-		request.setChunkedTransferEncoding(false);
-		std::ostream& requestStream = httpClientSession.sendRequest(request);
-		requestJson.stringify(requestStream);
-
-		std::stringstream ss;
-		requestJson.stringify(ss);
-		auto f = fopen("grpc.txt", "wt");
-		std::string grpc = ss.str();
-		fwrite(grpc.data(), grpc.size(), 1, f);
-		fclose(f);
-
-		Poco::Net::HTTPResponse response;
-		std::istream& request_stream = httpClientSession.receiveResponse(response);
-
-		// debugging answer
-
-		std::stringstream responseStringStream;
-		for (std::string line; std::getline(request_stream, line); ) {
-			responseStringStream << line << std::endl;
-		}
-		Poco::Logger& speedLog = Poco::Logger::get("SpeedLog");
-		speedLog.information("[gRPC relay] php server time: %s", phpRequestTime.string());
-
-		// extract parameter from request
-		Poco::JSON::Parser jsonParser;
-		Poco::Dynamic::Var parsedJson;
-		try {
-			parsedJson = jsonParser.parse(responseStringStream.str());
-		}
-		catch (Poco::Exception& ex) {
-			addError(new ParamError(functionName, "error parsing request answer grpc relay", ex.displayText().data()));
-
-			std::string fileName = "response_grpc_";
-			fileName += ".html";
-
-			FILE* f = fopen(fileName.data(), "wt");
-			std::string responseString = responseStringStream.str();
-			fwrite(responseString.data(), 1, responseString.size(), f);
-			fclose(f);
-			//	*/
-			sendErrorsAsEmail(responseStringStream.str());
-			return JSON_REQUEST_RETURN_PARSE_ERROR;
-		}
-
-		Poco::JSON::Object object = *parsedJson.extract<Poco::JSON::Object::Ptr>();
-		auto state = object.get("state");
-		std::string stateString = state.convert<std::string>();
-		if (stateString == "error") {
-			addError(new Error(functionName, "php server return error"));
-			if (!object.isNull("msg")) {
-				addError(new ParamError(functionName, "msg:", object.get("msg").convert<std::string>().data()));
-			}
-			if (!object.isNull("details")) {
-				addError(new ParamError(functionName, "details:", object.get("details").convert<std::string>().data()));
-			}
-			sendErrorsAsEmail();
-			return JSON_REQUEST_RETURN_ERROR;
-		}
-		ss.clear();
-		Poco::JSON::Stringifier::stringify(object, ss);
-		printf("json request result: %s\n", ss.str().data());
-	}
-	catch (Poco::Exception& e) {
-		addError(new ParamError(functionName, "connect error to php server", e.displayText().data()));
-		sendErrorsAsEmail();
-		return JSON_REQUEST_CONNECT_ERROR;
-	}
-
-	
-	
-	return JSON_REQUEST_RETURN_OK;
-}
\ No newline at end of file
diff --git a/src/proto b/src/proto
index ff412f735..81a461566 160000
--- a/src/proto
+++ b/src/proto
@@ -1 +1 @@
-Subproject commit ff412f735667b30233c0ce00d461f209ac7dde7c
+Subproject commit 81a461566e46d71533dc3e284fa075d7d68fd020