[fix] preserve current MiniRTC fixes with bounded DTLS recovery

apps/desktop/src/gui/application/gui_application.cpp

@@ -1363,6 +1363,12 @@ void GuiApplication::BindMainCallbacks() {
       LOG_WARN("Copy local id failed: {}", SDL_GetError());
     }
   });
+  main->on_signal_reconnect_requested([this] {
+    LOG_INFO("Signal reconnect requested from the status bar");
+    if (ForceSignalReconnect() != 0) {
+      LOG_WARN("Signal reconnect could not be started");
+    }
+  });
   main->on_toggle_password_visibility([this] {
     show_password_ = !show_password_;
     ui_->main->set_password_visible(show_password_);
@@ -1880,6 +1886,7 @@ void GuiApplication::Tick() {
   HandlePasswordChangeResult();
   HandleCredentialRecovery();
   if (!peer_) {
+    signal_connection_indicator_.Reset();
     CreateConnectionPeer();
   }
 #ifdef __linux__
@@ -2471,7 +2478,10 @@ void GuiApplication::SyncMainWindow() {
     std::lock_guard<std::mutex> lock(password_change_mutex_);
     ui_->main->set_password_change_pending(password_change_pending_);
   }
-  ui_->main->set_signal_connected(signal_connected_);
+  const bool signal_online = signal_connected_.load();
+  ui_->main->set_signal_connected(signal_online);
+  ui_->main->set_signal_reconnecting(
+      signal_connection_indicator_.Update(signal_online));
   ui_->main->set_signal_tls_error(signal_status_ ==
                                   SignalStatus::SignalTlsCertError);
   ui_->main->set_update_available(update_available_);

apps/desktop/src/gui/application/gui_application.h

@@ -14,6 +14,7 @@
 
 #include <remote_action.h>
 
+#include "application/signal_connection_indicator.h"
 #include "runtime/cursor_state_provider.h"
 #include "runtime/gui_runtime.h"
 
@@ -106,6 +107,7 @@ private:
       cursor_delivery_states_;
   uint32_t cursor_state_sequence_ = 0;
   std::chrono::steady_clock::time_point next_video_frame_time_{};
+  SignalConnectionIndicator signal_connection_indicator_;
 #if defined(__linux__) && !defined(__APPLE__)
   bool use_xwayland_gui_ = false;
   bool use_x11_custom_titlebar_ = false;

apps/desktop/src/gui/application/signal_connection_indicator.h

@@ -0,0 +1,38 @@
+#ifndef CROSSDESK_SIGNAL_CONNECTION_INDICATOR_H_
+#define CROSSDESK_SIGNAL_CONNECTION_INDICATOR_H_
+
+#include <chrono>
+#include <optional>
+
+namespace crossdesk {
+
+// Presentation state only. The actual connected flag remains authoritative
+// for actions and other UI consumers, including the announcement inbox.
+class SignalConnectionIndicator {
+ public:
+  using Clock = std::chrono::steady_clock;
+
+  bool Update(bool connected, Clock::time_point now = Clock::now()) {
+    if (connected) {
+      disconnected_at_.reset();
+    } else if (was_connected_) {
+      disconnected_at_ = now;
+    }
+    was_connected_ = connected;
+    return disconnected_at_ &&
+           now - *disconnected_at_ < std::chrono::seconds(10);
+  }
+
+  void Reset() {
+    was_connected_ = false;
+    disconnected_at_.reset();
+  }
+
+ private:
+  bool was_connected_ = false;
+  std::optional<Clock::time_point> disconnected_at_;
+};
+
+}  // namespace crossdesk
+
+#endif

apps/desktop/src/gui/assets/localization/localization_data.h

@@ -258,6 +258,9 @@ struct TranslationRow {
   X(signal_connected, u8"已连接服务器", "Connected", u8"Подключено к серверу") \
   X(signal_disconnected, u8"未连接服务器", "Disconnected",                     \
     u8"Нет подключения к серверу")                                             \
+  X(signal_reconnect, u8"重新连接", "Reconnect", u8"Переподключиться")             \
+  X(signal_reconnecting, u8"正在重新连接...", "Reconnecting...",               \
+    u8"Переподключение...")                                                    \
   X(signal_tls_cert_error, u8"证书验证失败，请重新安装自托管根证书",           \
     "Certificate verification failed. Reinstall the self-hosted root "         \
     "certificate.",                                                            \

apps/desktop/src/gui/runtime/connection_runtime.cpp

@@ -227,6 +227,14 @@ int GuiRuntime::RequestSingleDevicePresence(const std::string& remote_id,
   return ret;
 }
 
+int GuiRuntime::ForceSignalReconnect() {
+  if (!peer_) {
+    LOG_WARN("Signal reconnect requested with no connection peer");
+    return -1;
+  }
+  return ReconnectSignal(peer_);
+}
+
 void GuiRuntime::CloseRemoteSession(std::shared_ptr<RemoteSession> props) {
   if (!props || props->closing_.exchange(true)) return;
   if (props->peer_events_) props->peer_events_->Deactivate();

apps/desktop/src/gui/runtime/gui_runtime.h

@@ -54,6 +54,7 @@ class GuiRuntime : protected gui_detail::GuiState {
                 bool remember_password, bool bypass_presence_check = false);
   int RequestSingleDevicePresence(const std::string& remote_id,
                                   const char* password, bool remember_password);
+  int ForceSignalReconnect();
 
   void HandleRecentConnections();
   void HandleConnectionStatusChange();

apps/desktop/src/gui/ui/main_window.slint

@@ -65,6 +65,8 @@ export global UiStrings {
     in-out property <string> signal-connected: "Signal server connected";
     in-out property <string> signal-disconnected: "Signal server disconnected";
     in-out property <string> tls-error: "Signal server TLS certificate error";
+    in-out property <string> signal-reconnect: "Reconnect";
+    in-out property <string> signal-reconnecting: "Reconnecting...";
     in-out property <string> update-available: "A new version is available";
     in-out property <string> new-version: "New version";
     in-out property <string> check-for-updates: "Check for updates";
@@ -305,6 +307,7 @@ export component MainWindow inherits Window {
     in property <bool> password-visible: true;
     in property <bool> password-change-pending: false;
     in property <bool> signal-connected: false;
+    in property <bool> signal-reconnecting: false;
     in property <bool> signal-tls-error: false;
     in property <[RecentConnection]> recent-connections;
     in property <[AnnouncementItem]> announcements;
@@ -402,6 +405,7 @@ export component MainWindow inherits Window {
     callback browse-save-path;
     callback open-download;
     callback check-for-updates;
+    callback signal-reconnect-requested;
     callback connection-cancel;
     callback connection-acknowledge;
     callback connection-submit-password(string, bool);
@@ -1209,7 +1213,7 @@ export component MainWindow inherits Window {
                     width: 8px;
                     height: 8px;
                     border-radius: 4px;
-                    background: root.signal-tls-error ? #f59e0b : #ef4444;
+                    background: root.signal-tls-error || root.signal-reconnecting ? #f59e0b : #ef4444;
             }
             Text {
                     x: 28px;
@@ -1217,11 +1221,31 @@ export component MainWindow inherits Window {
                     height: 18px;
                     text: root.signal-tls-error ? UiStrings.tls-error
                           : root.signal-connected ? UiStrings.signal-connected
+                          : root.signal-reconnecting ? UiStrings.signal-reconnecting
                           : UiStrings.signal-disconnected;
                     color: #343941;
                     font-size: ImGuiFontStyle.base;
                     vertical-alignment: center;
             }
+            if !root.signal-connected && !root.signal-tls-error: Rectangle {
+                    x: parent.width - self.width - 12px;
+                    y: 3px;
+                    height: 18px;
+                    width: reconnect-label.preferred-width;
+                    reconnect-label := Text {
+                            text: UiStrings.signal-reconnect;
+                            color: #2563eb;
+                            font-size: ImGuiFontStyle.base;
+                            horizontal-alignment: center;
+                            vertical-alignment: center;
+                    }
+                    TouchArea {
+                            mouse-cursor: pointer;
+                            clicked => {
+                                root.signal-reconnect-requested();
+                            }
+                    }
+            }
         }
     }
 

apps/desktop/src/gui/ui/ui_localization.h

@@ -110,6 +110,10 @@ inline int ApplyMainWindowStrings(
   strings.set_signal_disconnected(
       Text(localization::signal_disconnected[language]));
   strings.set_tls_error(Text(localization::signal_tls_cert_error[language]));
+  strings.set_signal_reconnect(
+      Text(localization::signal_reconnect[language]));
+  strings.set_signal_reconnecting(
+      Text(localization::signal_reconnecting[language]));
   strings.set_update_available(
       Text(localization::new_version_available[language]));
   strings.set_new_version(Text(localization::new_version[language]));