diff --git a/include/ylt/coro_rpc/impl/coro_rpc_client.hpp b/include/ylt/coro_rpc/impl/coro_rpc_client.hpp
index ddcf0f5d5..1ad48a14b 100644
--- a/include/ylt/coro_rpc/impl/coro_rpc_client.hpp
+++ b/include/ylt/coro_rpc/impl/coro_rpc_client.hpp
@@ -88,7 +88,7 @@ struct rpc_return_type<void> {
   using type = std::monostate;
 };
 
-struct rpc_resp_buffer {
+struct resp_body {
   std::string read_buf_;
   std::string resp_attachment_buf_;
 };
@@ -97,10 +97,10 @@ template <typename T>
 struct async_rpc_result_value_t {
  private:
   T result_;
-  rpc_resp_buffer buffer_;
+  resp_body buffer_;
 
  public:
-  async_rpc_result_value_t(T &&result, rpc_resp_buffer &&buffer)
+  async_rpc_result_value_t(T &&result, resp_body &&buffer)
       : result_(std::move(result)), buffer_(std::move(buffer)) {}
   async_rpc_result_value_t(T &&result) : result_(std::move(result)) {}
   T &result() noexcept { return result_; }
@@ -108,16 +108,16 @@ struct async_rpc_result_value_t {
   std::string_view attachment() const noexcept {
     return buffer_.resp_attachment_buf_;
   }
-  rpc_resp_buffer release_buffer() { return std::move(buffer_); }
+  resp_body release_buffer() { return std::move(buffer_); }
 };
 
 template <>
 struct async_rpc_result_value_t<void> {
-  rpc_resp_buffer buffer_;
+  resp_body buffer_;
   std::string_view attachment() const noexcept {
     return buffer_.resp_attachment_buf_;
   }
-  rpc_resp_buffer release_buffer() { return std::move(buffer_); }
+  resp_body release_buffer() { return std::move(buffer_); }
 };
 
 template <typename T>
@@ -586,7 +586,7 @@ class coro_rpc_client {
   template <typename T>
   static rpc_result<T> handle_response_buffer(std::string_view buffer,
                                               uint8_t rpc_errc,
-                                              bool &should_close) {
+                                              bool &has_error) {
     rpc_return_type_t<T> ret;
     struct_pack::err_code ec;
     rpc_error err;
@@ -607,7 +607,7 @@ class coro_rpc_client {
         err.val() = rpc_errc;
         ec = struct_pack::deserialize_to(err.msg, buffer);
         if SP_LIKELY (!ec) {
-          should_close = true;
+          has_error = true;
           return rpc_result<T>{unexpect_t{}, std::move(err)};
         }
       }
@@ -618,7 +618,7 @@ class coro_rpc_client {
         }
       }
     }
-    should_close = true;
+    has_error = true;
     // deserialize failed.
     ELOGV(WARNING, "deserilaize rpc result failed");
     err = {errc::invalid_rpc_result, "failed to deserialize rpc return value"};
@@ -665,7 +665,7 @@ class coro_rpc_client {
   }
 
   struct async_rpc_raw_result_value_type {
-    rpc_resp_buffer buffer_;
+    resp_body buffer_;
     uint8_t errc_;
   };
 
@@ -680,7 +680,7 @@ class coro_rpc_client {
     handler_t(std::unique_ptr<coro_io::period_timer> &&timer,
               async_simple::Promise<async_rpc_raw_result> &&promise)
         : timer_(std::move(timer)), promise_(std::move(promise)) {}
-    void operator()(rpc_resp_buffer &&buffer, uint8_t rpc_errc) {
+    void operator()(resp_body &&buffer, uint8_t rpc_errc) {
       timer_->cancel();
       promise_.setValue(async_rpc_raw_result{
           async_rpc_raw_result_value_type{std::move(buffer), rpc_errc}});
@@ -701,7 +701,7 @@ class coro_rpc_client {
     std::atomic<bool> has_closed_ = false;
     coro_io::ExecutorWrapper<> executor_;
     std::unordered_map<uint32_t, handler_t> response_handler_table_;
-    rpc_resp_buffer resp_buffer_;
+    resp_body resp_buffer_;
     asio::ip::tcp::socket socket_;
     std::atomic<uint32_t> recving_cnt_ = 0;
     control_t(asio::io_context::executor_type executor, bool is_timeout)
@@ -860,7 +860,7 @@ class coro_rpc_client {
   }
 
   template <typename T>
-  static async_simple::coro::Lazy<async_rpc_result<T>> get_deserializer(
+  static async_simple::coro::Lazy<async_rpc_result<T>> deserialize_rpc_result(
       async_simple::Future<async_rpc_raw_result> future,
       std::weak_ptr<control_t> watcher) {
     auto ret_ = co_await std::move(future);
@@ -878,11 +878,11 @@ class coro_rpc_client {
       }
     }
 
-    bool should_close = false;
+    bool has_error = false;
     auto &ret = std::get<0>(ret_);
     auto result = handle_response_buffer<T>(ret.buffer_.read_buf_, ret.errc_,
-                                            should_close);
-    if (should_close) {
+                                            has_error);
+    if (has_error) {
       if (auto w = watcher.lock(); w) {
         close_socket(std::move(w));
       }
@@ -992,7 +992,7 @@ class coro_rpc_client {
 #endif
         }
         guard.release();
-        co_return get_deserializer<rpc_return_t>(
+        co_return deserialize_rpc_result<rpc_return_t>(
             std::move(future), std::weak_ptr<control_t>{control_});
       }
     }