message: HttpRequestExecutor. Set connection stream IOMode on request.
diff: @@ -122,6 +122,9 @@ HttpRequestExecutor::executeOnce(const String& method,
  "[oatpp::web::client::HttpRequestExecutor::executeOnce()]: Connection is null");
  }
  + connection->setInputStreamIOMode(data::stream::IOMode::BLOCKING);
  + connection->setOutputStreamIOMode(data::stream::IOMode::BLOCKING);
  +
  auto request = oatpp::web::protocol::http::outgoing::Request::createShared(method, path, headers, body);
  request->putHeaderIfNotExists(oatpp::web::protocol::http::Header::HOST, m_connectionProvider->getProperty("host"));
  request->putHeaderIfNotExists(oatpp::web::protocol::http::Header::CONNECTION, oatpp::web::protocol::http::Header::Value::CONNECTION_KEEP_ALIVE);
  @@ -216,6 +219,9 @@ HttpRequestExecutor::executeOnceAsync(const String& method,
  "[oatpp::web::client::HttpRequestExecutor::executeOnceAsync::ExecutorCoroutine{act()}]: Connection is null");
  }
  + m_connection->setInputStreamIOMode(data::stream::IOMode::ASYNCHRONOUS);
  + m_connection->setOutputStreamIOMode(data::stream::IOMode::ASYNCHRONOUS);
  +
  auto request = OutgoingRequest::createShared(m_method, m_path, m_headers, m_body);
  request->putHeaderIfNotExists(Header::HOST, m_this->m_connectionProvider->getProperty("host"));
  request->putHeaderIfNotExists(Header::CONNECTION, Header::Value::CONNECTION_KEEP_ALIVE);
  