driver: use readuntil to get response msg

- The driver may recv partial ctrl msg, which causes a json decode error

pykirdy/driver/kirdy.py

@@ -806,21 +806,21 @@ class Kirdy:
         try:
             while True:
                 if self._report_mode_on:
-                    responses = await asyncio.wait_for(self._read_response(), self._timeout)
+                    response = await asyncio.wait_for(self._read_response(), self._timeout)
                 else:
-                    responses = await self._read_response()
-                for response in responses:
-                    if response["msg_type"] == 'HardReset':
-                        raise asyncio.exceptions.CancelledError
-                    if response["msg_type"] == 'Report' and not self._msg_queue_get_report:
-                        if self._report_sig is None:
-                            self._report_queue.put_nowait_overwrite(response)
-                        else:
-                            self._report_sig.emit(response)
+                    response = await self._read_response()
+
+                if response["msg_type"] == 'HardReset':
+                    raise asyncio.exceptions.CancelledError
+                if response["msg_type"] == 'Report' and not self._msg_queue_get_report:
+                    if self._report_sig is None:
+                        self._report_queue.put_nowait_overwrite(response)
                     else:
-                        if self._msg_queue_get_report:
-                            self._msg_queue_get_report = False
-                        self._int_msg_queue.put_nowait_overwrite(response)
+                        self._report_sig.emit(response)
+                else:
+                    if self._msg_queue_get_report:
+                        self._msg_queue_get_report = False
+                    self._int_msg_queue.put_nowait_overwrite(response)
         except asyncio.exceptions.CancelledError:
             pass
         except (TimeoutError, ConnectionResetError, ConnectionError) as exec:
@@ -860,18 +860,13 @@ class Kirdy:
         writer_sock = self._writer.get_extra_info("socket")
         writer_sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
         
-    async def _read_response(self, buffer_size=16384):
+    async def _read_response(self):
         raw_response = b''
         while len(raw_response) == 0:
             # Ignore 0 size packet
-            raw_response = await self._reader.read(buffer_size)
+            raw_response = await self._reader.readuntil()
         response = raw_response.decode('utf-8', errors='ignore').split("\n")
-        response = response[:-1]
-
-        items = []
-        for item in response:
-            items.append(json.loads(item))
-        return items
+        return json.loads(response[0])
     
     async def _send_raw_cmd(self, cmd, msg_type="Acknowledge", sig=None):
         if self.connected():