Code cleanup, make sure race conditions can't happen, at least in theory.

src/fenrirscreenreader/remoteDriver/unixDriver.py

@@ -45,10 +45,14 @@ class driver(remoteDriver):
                 continue
             if self.fenrirSock in r:
                 client_sock, client_addr = self.fenrirSock.accept()
+                # Ensure client socket is always closed to prevent resource leaks
+                try:
                     try:
                         rawdata = client_sock.recv(8129)
                     except Exception as e:
                         self.env['runtime']['debug'].writeDebugOut('unixDriver watchDog: Error receiving data from client: ' + str(e), debug.debugLevel.ERROR)
+                        rawdata = b''  # Set default empty data if recv fails
+                    
                     try:
                         data = rawdata.decode("utf-8").rstrip().lstrip()
                         eventQueue.put({"Type":fenrirEventType.RemoteIncomming,
@@ -56,6 +60,8 @@ class driver(remoteDriver):
                         })
                     except Exception as e:
                         self.env['runtime']['debug'].writeDebugOut('unixDriver watchDog: Error decoding/queuing data: ' + str(e), debug.debugLevel.ERROR)
+                finally:
+                    # Always close client socket, even if data processing fails
                     try:
                         client_sock.close()
                     except Exception as e:

src/fenrirscreenreader/soundDriver/gstreamerDriver.py

@@ -57,6 +57,9 @@ class driver(soundDriver):
             return
         self.cancel()
         self.mainloop.quit()
+        # Wait for the GLib MainLoop thread to finish to prevent shutdown races
+        if hasattr(self, 'thread') and self.thread.is_alive():
+            self.thread.join(timeout=2.0)  # 2 second timeout to prevent hanging
 
     def _onPlayerMessage(self, bus, message):
         if not self._initialized:

src/fenrirscreenreader/speechDriver/genericDriver.py

@@ -73,6 +73,7 @@ class driver(speechDriver):
             return
         self.clear_buffer()
         self.lock.acquire(True)
+        try:
             if self.proc:
                 try:
                     self.proc.terminate()
@@ -83,6 +84,8 @@ class driver(speechDriver):
                     except Exception as e:
                         self.env['runtime']['debug'].writeDebugOut('speechDriver:Cancel:self.proc.kill():' + str(e),debug.debugLevel.WARNING)
                 self.proc = None
+        finally:
+            # Ensure lock is always released, even if process termination fails
             self.lock.release()
     def setCallback(self, callback):
         print('SpeechDummyDriver: setCallback')