req.engine.queue() doesn't support the "label" keyword

[ngregoire]

In queueRequest(), using the label keyword is accepted:
engine.queue(target.req, "", label='x')

But not in handleResponse():
req.engine.queue(req.template, "something"), label='z')

The error message:
Error in user-defined callback: Traceback (most recent call last): File "<string>", line 26, in handleResponse TypeError: queue(): takes no keyword arguments

Tested on Burp v2021.2.1 + Turbo Intruder v1.1.3

[ngregoire]

Note: using engine.queue() with the label keyword works from handleResponse() if the engine created in queueRequest() is exposed using a global variable

[albinowax]

Yeah, req.engine is a reference to the Java class so it misses out on the features offered by the Python wrapper. This is a known issue but it's on my todo list. IIRC you can still pass in a label, but you have to supply all arguments rather than using keywords.