Handle CTRL_CLOSE_EVENT on Windows (#2952)

This allows us to terminate gracefully when console window is closed.
Mostly relevant for portable builds.

src/main.cpp

@@ -71,6 +71,15 @@ SessionMonitorWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
       return DefWindowProc(hwnd, uMsg, wParam, lParam);
   }
 }
+
+WINAPI BOOL
+ConsoleCtrlHandler(DWORD type) {
+  if (type == CTRL_CLOSE_EVENT) {
+    BOOST_LOG(info) << "Console closed handler called";
+    lifetime::exit_sunshine(0, false);
+  }
+  return FALSE;
+}
 #endif
 
 int
@@ -244,6 +253,11 @@ main(int argc, char *argv[]) {
     shutdown_event->raise(true);
   });
 
+#ifdef _WIN32
+  // Terminate gracefully on Windows when console window is closed
+  SetConsoleCtrlHandler(ConsoleCtrlHandler, TRUE);
+#endif
+
   proc::refresh(config::stream.file_apps);
 
   // If any of the following fail, we log an error and continue event though sunshine will not function correctly.