diff --git a/src/gui/render.cpp b/src/gui/render.cpp
index d8f2336..8cea1dd 100644
--- a/src/gui/render.cpp
+++ b/src/gui/render.cpp
@@ -1376,8 +1376,8 @@ void Render::MainLoop() {
       remote_action.i.host_name_size = host_name.size();
 
       std::string msg = remote_action.to_json();
-      int ret = SendDataFrame(peer_, msg.data(), msg.size(),
-                              control_data_label_.c_str());
+      int ret = SendReliableDataFrame(peer_, msg.data(), msg.size(),
+                                      control_data_label_.c_str());
       FreeRemoteAction(remote_action);
       if (0 == ret) {
         need_to_send_host_info_ = false;
@@ -1897,6 +1897,12 @@ void Render::ProcessSdlEvent(const SDL_Event& event) {
         foucs_on_main_window_ = false;
       }
       break;
+    case SDL_EVENT_DROP_FILE:
+      if (stream_window_ &&
+          SDL_GetWindowID(stream_window_) == event.window.windowID) {
+        printf("SDL_EVENT_DROP_FILE (%s)\n", event.drop.data);
+      }
+      break;
 
     case SDL_EVENT_MOUSE_MOTION:
     case SDL_EVENT_MOUSE_BUTTON_DOWN:
diff --git a/src/gui/render.h b/src/gui/render.h
index 4408ad5..cd01de5 100644
--- a/src/gui/render.h
+++ b/src/gui/render.h
@@ -46,7 +46,7 @@ class Render {
     Params params_;
     PeerPtr* peer_ = nullptr;
     std::string audio_label_ = "control_audio";
-    std::string data_label_ = "control_data";
+    std::string data_label_ = "data";
     std::string file_label_ = "file";
     std::string control_data_label_ = "control_data";
     std::string file_feedback_label_ = "file_feedback";
diff --git a/src/gui/toolbars/control_bar.cpp b/src/gui/toolbars/control_bar.cpp
index b62ee22..4a88568 100644
--- a/src/gui/toolbars/control_bar.cpp
+++ b/src/gui/toolbars/control_bar.cpp
@@ -95,8 +95,8 @@ int Render::ControlBar(std::shared_ptr<SubStreamWindowProperties>& props) {
           remote_action.d = i;
           if (props->connection_status_ == ConnectionStatus::Connected) {
             std::string msg = remote_action.to_json();
-            SendDataFrame(props->peer_, msg.c_str(), msg.size(),
-                          props->control_data_label_.c_str());
+            SendReliableDataFrame(props->peer_, msg.c_str(), msg.size(),
+                                  props->control_data_label_.c_str());
           }
         }
         props->display_selectable_hovered_ = ImGui::IsWindowHovered();
@@ -176,8 +176,8 @@ int Render::ControlBar(std::shared_ptr<SubStreamWindowProperties>& props) {
         remote_action.type = ControlType::audio_capture;
         remote_action.a = props->audio_capture_button_pressed_;
         std::string msg = remote_action.to_json();
-        SendDataFrame(props->peer_, msg.c_str(), msg.size(),
-                      props->control_data_label_.c_str());
+        SendReliableDataFrame(props->peer_, msg.c_str(), msg.size(),
+                              props->control_data_label_.c_str());
       }
     }