Fixed unbound error on timeout with PythonIsotpConnection (#198)

Author: pylessard

udsoncan/client.py

@@ -2157,33 +2157,33 @@ def send_request(self, request: Request, timeout: int = -1) -> Optional[Response
             done_receiving = True
             self.logger.debug("Waiting for server response")
 
-            try:
-                if not respect_overall_timeout or (respect_overall_timeout and time.time() + single_request_timeout < overall_timeout_time):
-                    timeout_type_used = 'single_request'
-                    timeout_value = single_request_timeout
-                else:
-                    timeout_type_used = 'overall'
-                    timeout_value = max(overall_timeout_time - time.time(), 0)
+            if not respect_overall_timeout or (respect_overall_timeout and time.time() + single_request_timeout < overall_timeout_time):
+                timeout_type_used = 'single_request'
+                timeout_value = single_request_timeout
+            else:
+                timeout_type_used = 'overall'
+                timeout_value = max(overall_timeout_time - time.time(), 0)
 
+            try:
                 recv_payload = self.conn.wait_frame(timeout=timeout_value, exception=True)
             except TimeoutException:
-                if timeout_type_used == 'single_request':
-                    timeout_name_to_report = 'P2* timeout' if using_p2_star else 'P2 timeout'
-                elif timeout_type_used == 'overall':
-                    timeout_name_to_report = 'Global request timeout'
-                else:  # Shouldn't go here.
-                    timeout_name_to_report = 'Timeout'
                 timed_out = True
-
             except Exception as e:
                 raise e
 
             if timed_out or recv_payload is None:
                 if spr_used:
                     return None
+                if timeout_type_used == 'single_request':
+                    timeout_name_to_report = 'P2* timeout' if using_p2_star else 'P2 timeout'
+                elif timeout_type_used == 'overall':
+                    timeout_name_to_report = 'Global request timeout'
+                else:  # Shouldn't go here.
+                    timeout_name_to_report = 'Timeout'
+
                 raise TimeoutException('Did not receive response in time. %s time has expired (timeout=%.3f sec)' %
                                        (timeout_name_to_report, timeout_value))
-    
+
             response = Response.from_payload(recv_payload)
             self.last_response = response
             self.logger.debug("Received response from server")