Move cleanup to after thread wait; Figured out why the webserver was exiting early

openlp/core/api/http/server.py

@@ -27,7 +27,7 @@ import logging
 import time
 
 from PyQt5 import QtCore, QtWidgets
-from waitress import serve
+from waitress.server import create_server
 
 from openlp.core.api.deploy import download_and_check, download_sha256
 from openlp.core.api.endpoint.controller import controller_endpoint, api_controller_endpoint
@@ -61,11 +61,19 @@ class HttpWorker(ThreadWorker):
         port = Settings().value('api/port')
         Registry().execute('get_website_version')
         try:
-            serve(application, host=address, port=port)
+            self.server = create_server(application, host=address, port=port)
+            self.server.run()
         except OSError:
             log.exception('An error occurred when serving the application.')
         self.quit.emit()
 
+    def stop(self):
+        """
+        A method to stop the worker
+        """
+        if hasattr(self, 'server'):
+            self.server.close()
+
 
 class HttpServer(RegistryBase, RegistryProperties, LogMixin):
     """

openlp/core/api/websockets.py

@@ -29,7 +29,6 @@ import logging
 import time
 
 import websockets
-from PyQt5 import QtCore
 
 from openlp.core.common.mixins import LogMixin, RegistryProperties
 from openlp.core.common.registry import Registry
@@ -59,12 +58,11 @@ class WebSocketWorker(ThreadWorker):
         self.ws_server.start_server()
         self.quit.emit()
 
-    @QtCore.pyqtSlot()
     def stop(self):
         """
         Stop the websocket server
         """
-        self.ws_server.stop = True
+        self.ws_server.stop_server()
 
 
 class WebSocketServer(RegistryProperties, LogMixin):
@@ -97,6 +95,15 @@ class WebSocketServer(RegistryProperties, LogMixin):
         else:
             log.debug('Failed to start ws server on port {port}'.format(port=port))
 
+    def stop_server(self):
+        """
+        Stop the websocket server
+        """
+        if hasattr(self.ws_server, 'ws_server'):
+            self.ws_server.ws_server.close()
+        elif hasattr(self.ws_server, 'server'):
+            self.ws_server.server.close()
+
     def start_websocket_instance(self, address, port):
         """
         Start the server

openlp/core/ui/mainwindow.py

@@ -499,8 +499,8 @@ class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow, RegistryProperties):
         Settings().set_up_default_values()
         self.about_form = AboutForm(self)
         MediaController()
-        websockets.WebSocketServer()
+        self.ws_server = websockets.WebSocketServer()
-        server.HttpServer()
+        self.http_server = server.HttpServer(self)
         SettingsForm(self)
         self.formatting_tag_form = FormattingTagForm(self)
         self.shortcut_form = ShortcutListForm(self)
@@ -560,7 +560,11 @@ class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow, RegistryProperties):
         for thread_name in self.threads.keys():
             self.application.processEvents()
             thread = self.threads[thread_name]['thread']
+            worker = self.threads[thread_name]['worker']
             try:
+                if worker and hasattr(worker, 'stop'):
+                    # If the worker has a stop method, run it
+                    worker.stop()
                 if thread and thread.isRunning():
                     # If the thread is running, let's wait 5 seconds for it
                     retry = 0
@@ -1028,20 +1032,14 @@ class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow, RegistryProperties):
         if not self.application.is_event_loop_active:
             event.ignore()
             return
-        # If we just did a settings import, close without saving changes.
-        if self.settings_imported:
-            self.clean_up(False)
-            event.accept()
         if self.service_manager_contents.is_modified():
             ret = self.service_manager_contents.save_modified_service()
             if ret == QtWidgets.QMessageBox.Save:
                 if self.service_manager_contents.decide_save_method():
-                    self.clean_up()
                     event.accept()
                 else:
                     event.ignore()
             elif ret == QtWidgets.QMessageBox.Discard:
-                self.clean_up()
                 event.accept()
             else:
                 event.ignore()
@@ -1057,15 +1055,16 @@ class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow, RegistryProperties):
                 close_button.setText(translate('OpenLP.MainWindow', '&Exit OpenLP'))
                 msg_box.setDefaultButton(QtWidgets.QMessageBox.Close)
                 if msg_box.exec() == QtWidgets.QMessageBox.Close:
-                    self.clean_up()
                     event.accept()
                 else:
                     event.ignore()
             else:
-                self.clean_up()
                 event.accept()
         if event.isAccepted():
+            # Wait for all the threads to complete
             self._wait_for_threads()
+            # If we just did a settings import, close without saving changes.
+            self.clean_up(save_settings=not self.settings_imported)
 
     def clean_up(self, save_settings=True):
         """