Abort Signal not being called

[lukasa1993]

hello, i am having issue when request.abort is not triggered when user closes browser tab i noticed that its called from here

react-router/packages/react-router-express/server.ts

Line 128 in ddf8e16

res.on("close", () => controller?.abort());

but shouldn't it be on req.on close ? instead of res.on close? or at least both?